diff --git a/DataAccess/DTOs/Converters/BeamShears/HasStirrupsFromDTOUpdateStrategy.cs b/DataAccess/DTOs/Converters/BeamShears/HasStirrupsFromDTOUpdateStrategy.cs
index c184f4a..32f2fe6 100644
--- a/DataAccess/DTOs/Converters/BeamShears/HasStirrupsFromDTOUpdateStrategy.cs
+++ b/DataAccess/DTOs/Converters/BeamShears/HasStirrupsFromDTOUpdateStrategy.cs
@@ -1,6 +1,7 @@
 using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperCommon.Services;
 using StructureHelperLogics.Models.BeamShears;
 
@@ -10,6 +11,7 @@ namespace DataAccess.DTOs
     {
         private Dictionary<(Guid id, Type type), ISaveable> referenceDictionary;
         private IShiftTraceLogger traceLogger;
+        private IUpdateStrategy<IHasVisualProperty> visualUpdateStrategy;
 
         public HasStirrupsFromDTOUpdateStrategy(Dictionary<(Guid id, Type type), ISaveable> referenceDictionary, IShiftTraceLogger traceLogger)
         {
@@ -63,7 +65,8 @@ namespace DataAccess.DTOs
             {
                 throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(stirrup));
             }
-
+            visualUpdateStrategy = new HasVisualPropertyFromDTOUpdateStrategy(referenceDictionary, traceLogger);
+            visualUpdateStrategy.Update(newItem, stirrup);
             return newItem;
         }
 
diff --git a/DataAccess/DTOs/Converters/BeamShears/HasStirrupsToDTOUpdateStrategy.cs b/DataAccess/DTOs/Converters/BeamShears/HasStirrupsToDTOUpdateStrategy.cs
index cdbc9d8..a6f10c5 100644
--- a/DataAccess/DTOs/Converters/BeamShears/HasStirrupsToDTOUpdateStrategy.cs
+++ b/DataAccess/DTOs/Converters/BeamShears/HasStirrupsToDTOUpdateStrategy.cs
@@ -1,6 +1,7 @@
 using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperCommon.Services;
 using StructureHelperLogics.Models.BeamShears;
 
@@ -10,6 +11,7 @@ namespace DataAccess.DTOs
     {
         private Dictionary<(Guid id, Type type), ISaveable> referenceDictionary;
         private IShiftTraceLogger traceLogger;
+        private IUpdateStrategy<IHasVisualProperty> visualUpdateStrategy;
 
         public HasStirrupsToDTOUpdateStrategy(Dictionary<(Guid id, Type type), ISaveable> referenceDictionary, IShiftTraceLogger traceLogger)
         {
@@ -64,6 +66,8 @@ namespace DataAccess.DTOs
             {
                 throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(stirrup));
             }
+            visualUpdateStrategy = new HasVisualPropertyToDTOUpdateStrategy(referenceDictionary, traceLogger);
+            visualUpdateStrategy.Update(newItem, stirrup);
             return newItem;
         }
 
diff --git a/DataAccess/DTOs/Converters/BeamShears/StirrupByInclinedRebarToDTOConvertStrategy.cs b/DataAccess/DTOs/Converters/BeamShears/StirrupByInclinedRebarToDTOConvertStrategy.cs
index dfdf3b7..98570aa 100644
--- a/DataAccess/DTOs/Converters/BeamShears/StirrupByInclinedRebarToDTOConvertStrategy.cs
+++ b/DataAccess/DTOs/Converters/BeamShears/StirrupByInclinedRebarToDTOConvertStrategy.cs
@@ -1,5 +1,6 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.BeamShears;
 using StructureHelperLogics.Models.Materials;
 using System;
@@ -14,6 +15,7 @@ namespace DataAccess.DTOs
     {
         private IUpdateStrategy<IStirrupByInclinedRebar> updateStrategy;
         private IConvertStrategy<RebarSectionDTO, IRebarSection> rebarConvertStrategy;
+        
 
         public StirrupByInclinedRebarToDTOConvertStrategy(Dictionary<(Guid id, Type type), ISaveable> referenceDictionary, IShiftTraceLogger traceLogger) : base(referenceDictionary, traceLogger)
         {
diff --git a/DataAccess/DTOs/Converters/BeamShears/StirrupGroupToDTOConvertStrategy.cs b/DataAccess/DTOs/Converters/BeamShears/StirrupGroupToDTOConvertStrategy.cs
index 46ba207..e53c85a 100644
--- a/DataAccess/DTOs/Converters/BeamShears/StirrupGroupToDTOConvertStrategy.cs
+++ b/DataAccess/DTOs/Converters/BeamShears/StirrupGroupToDTOConvertStrategy.cs
@@ -1,5 +1,6 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.BeamShears;
 using StructureHelperLogics.Models.BeamShears.Logics;
 using System;
@@ -15,6 +16,7 @@ namespace DataAccess.DTOs
         private IUpdateStrategy<IStirrupGroup> updateStrategy;
         private IUpdateStrategy<IHasStirrups> stirrupUpdateStrategy;
 
+
         public StirrupGroupToDTOConvertStrategy(
             Dictionary<(Guid id, Type type), ISaveable> referenceDictionary,
             IShiftTraceLogger traceLogger)
@@ -34,7 +36,7 @@ namespace DataAccess.DTOs
 
         private void InitializeStrategies()
         {
-            updateStrategy ??= new StirrupGroupUpdateStrategy();
+            updateStrategy ??= new StirrupGroupUpdateStrategy() { UpdateChildren = false};
             stirrupUpdateStrategy ??= new HasStirrupsToDTOUpdateStrategy(ReferenceDictionary, TraceLogger);
         }
     }
diff --git a/DataAccess/DTOs/Converters/HasVisualPropertyFromDTOUpdateStrategy.cs b/DataAccess/DTOs/Converters/HasVisualPropertyFromDTOUpdateStrategy.cs
new file mode 100644
index 0000000..37c180f
--- /dev/null
+++ b/DataAccess/DTOs/Converters/HasVisualPropertyFromDTOUpdateStrategy.cs
@@ -0,0 +1,37 @@
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
+using StructureHelperCommon.Services;
+
+namespace DataAccess.DTOs
+{
+    public class HasVisualPropertyFromDTOUpdateStrategy : IUpdateStrategy<IHasVisualProperty>
+    {
+        private Dictionary<(Guid id, Type type), ISaveable> referenceDictionary;
+        private IShiftTraceLogger traceLogger;
+        private IConvertStrategy<PrimitiveVisualProperty, PrimitiveVisualPropertyDTO> convertStrategy;
+
+        public HasVisualPropertyFromDTOUpdateStrategy(Dictionary<(Guid id, Type type), ISaveable> referenceDictionary, IShiftTraceLogger traceLogger)
+        {
+            this.referenceDictionary = referenceDictionary;
+            this.traceLogger = traceLogger;
+        }
+
+        public void Update(IHasVisualProperty targetObject, IHasVisualProperty sourceObject)
+        {
+            CheckObject.IsNull(targetObject);
+            CheckObject.IsNull(sourceObject);
+            if (ReferenceEquals(targetObject, sourceObject)) { return; }
+            convertStrategy = new DictionaryConvertStrategy<PrimitiveVisualProperty, PrimitiveVisualPropertyDTO>(
+                referenceDictionary,
+                traceLogger,
+                new PrimitiveVisualPropertyFromDTOConvertStrategy(referenceDictionary, traceLogger));
+            if (sourceObject.VisualProperty is not PrimitiveVisualPropertyDTO visualProperty)
+            {
+                throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(sourceObject.VisualProperty));
+            }
+            targetObject.VisualProperty = convertStrategy.Convert(visualProperty);
+        }
+    }
+}
diff --git a/DataAccess/DTOs/Converters/HasVisualPropertyToDTOUpdateStrategy.cs b/DataAccess/DTOs/Converters/HasVisualPropertyToDTOUpdateStrategy.cs
new file mode 100644
index 0000000..663d320
--- /dev/null
+++ b/DataAccess/DTOs/Converters/HasVisualPropertyToDTOUpdateStrategy.cs
@@ -0,0 +1,32 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
+using StructureHelperCommon.Services;
+
+namespace DataAccess.DTOs
+{
+    public class HasVisualPropertyToDTOUpdateStrategy : IUpdateStrategy<IHasVisualProperty>
+    {
+        private Dictionary<(Guid id, Type type), ISaveable> referenceDictionary;
+        private IShiftTraceLogger traceLogger;
+        private IConvertStrategy<PrimitiveVisualPropertyDTO, IPrimitiveVisualProperty> convertStrategy;
+
+        public HasVisualPropertyToDTOUpdateStrategy(Dictionary<(Guid id, Type type), ISaveable> referenceDictionary, IShiftTraceLogger traceLogger)
+        {
+            this.referenceDictionary = referenceDictionary;
+            this.traceLogger = traceLogger;
+        }
+
+        public void Update(IHasVisualProperty targetObject, IHasVisualProperty sourceObject)
+        {
+            CheckObject.IsNull(targetObject);
+            CheckObject.IsNull(sourceObject);
+            if (ReferenceEquals(targetObject, sourceObject)) { return; }
+            convertStrategy = new DictionaryConvertStrategy<PrimitiveVisualPropertyDTO, IPrimitiveVisualProperty>(
+                referenceDictionary,
+                traceLogger,
+                new PrimitiveVisualPropertyToDTOConvertStrategy(referenceDictionary, traceLogger));
+            targetObject.VisualProperty = convertStrategy.Convert(sourceObject.VisualProperty);
+        }
+    }
+}
diff --git a/DataAccess/DTOs/Converters/PrimitiveVisualPropertyFromDTOConvertStrategy.cs b/DataAccess/DTOs/Converters/PrimitiveVisualPropertyFromDTOConvertStrategy.cs
new file mode 100644
index 0000000..e97ad9f
--- /dev/null
+++ b/DataAccess/DTOs/Converters/PrimitiveVisualPropertyFromDTOConvertStrategy.cs
@@ -0,0 +1,23 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
+
+namespace DataAccess.DTOs
+{
+    internal class PrimitiveVisualPropertyFromDTOConvertStrategy : ConvertStrategy<PrimitiveVisualProperty, PrimitiveVisualPropertyDTO>
+    {
+        private IUpdateStrategy<IPrimitiveVisualProperty> _updateStrategy;
+
+        public PrimitiveVisualPropertyFromDTOConvertStrategy(Dictionary<(Guid id, Type type), ISaveable> referenceDictionary, IShiftTraceLogger traceLogger) : base(referenceDictionary, traceLogger)
+        {
+        }
+
+        public override PrimitiveVisualProperty GetNewItem(PrimitiveVisualPropertyDTO source)
+        {
+            _updateStrategy ??= new PrimitiveVisualPropertyUpdateStrategy();
+            ChildClass = this;
+            NewItem = new(source.Id);
+            return NewItem;
+        }
+    }
+}
diff --git a/DataAccess/DTOs/Converters/PrimitiveVisualPropertyToDTOConvertStrategy.cs b/DataAccess/DTOs/Converters/PrimitiveVisualPropertyToDTOConvertStrategy.cs
new file mode 100644
index 0000000..3c912b1
--- /dev/null
+++ b/DataAccess/DTOs/Converters/PrimitiveVisualPropertyToDTOConvertStrategy.cs
@@ -0,0 +1,25 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.VisualProperties;
+
+namespace DataAccess.DTOs
+{
+    public class PrimitiveVisualPropertyToDTOConvertStrategy : ConvertStrategy<PrimitiveVisualPropertyDTO, IPrimitiveVisualProperty>
+    {
+        private IUpdateStrategy<IPrimitiveVisualProperty> _updateStrategy;
+
+        public PrimitiveVisualPropertyToDTOConvertStrategy(
+            Dictionary<(Guid id, Type type), ISaveable> referenceDictionary,
+            IShiftTraceLogger traceLogger) : base(referenceDictionary, traceLogger)
+        {
+        }
+
+        public override PrimitiveVisualPropertyDTO GetNewItem(IPrimitiveVisualProperty source)
+        {
+            _updateStrategy ??= new PrimitiveVisualPropertyUpdateStrategy();
+            ChildClass = this;
+            NewItem = new(source.Id);
+            return NewItem;
+        }
+    }
+}
diff --git a/DataAccess/DTOs/Converters/ShapeFromDTOConvertStrategy.cs b/DataAccess/DTOs/Converters/ShapeFromDTOConvertStrategy.cs
index 3023148..df50109 100644
--- a/DataAccess/DTOs/Converters/ShapeFromDTOConvertStrategy.cs
+++ b/DataAccess/DTOs/Converters/ShapeFromDTOConvertStrategy.cs
@@ -22,7 +22,7 @@ namespace DataAccess.DTOs
                     (this, new RectangleShapeFromDTOConvertStrategy(this));
                 NewItem = rectangleConvertStrategy.Convert(rectangleShapeDTO);
             }
-            if (source is CircleShapeDTO circleShapeDTO)
+            else if (source is CircleShapeDTO circleShapeDTO)
             {
                 circleConvertStrategy ??= new DictionaryConvertStrategy<CircleShape, CircleShapeDTO>
                     (this, new CircleShapeFromDTOConvertStrategy(this));
diff --git a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByDensityDTO.cs b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByDensityDTO.cs
index 18a4d36..22ad14a 100644
--- a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByDensityDTO.cs
+++ b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByDensityDTO.cs
@@ -1,5 +1,7 @@
 using Newtonsoft.Json;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.BeamShears;
+using System.Windows.Media;
 
 namespace DataAccess.DTOs
 {
@@ -10,13 +12,23 @@ namespace DataAccess.DTOs
         [JsonProperty("Name")]
         public string? Name { get; set; } = string.Empty;
         [JsonProperty("StirrupDensity")]
-        public double StirrupDensity { get; set; }
+        public double StirrupDensity { get; set; } = 30000;
         [JsonProperty("CompressedGap")]
-        public double CompressedGap { get; set; }
+        public double CompressedGap { get; set; } = 0;
+        [JsonProperty("StartCoordinate")]
+        public double StartCoordinate { get; set; } = 0;
+        [JsonProperty("EndCoordinate")]
+        public double EndCoordinate { get; set; } = 100;
+        [JsonProperty("VisualProperty")]
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
 
         public StirrupByDensityDTO(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualPropertyDTO(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByInclinedRebarDTO.cs b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByInclinedRebarDTO.cs
index aa846d0..9c5b320 100644
--- a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByInclinedRebarDTO.cs
+++ b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByInclinedRebarDTO.cs
@@ -1,6 +1,8 @@
 using Newtonsoft.Json;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.BeamShears;
 using StructureHelperLogics.Models.Materials;
+using System.Windows.Media;
 
 namespace DataAccess.DTOs
 {
@@ -22,11 +24,16 @@ namespace DataAccess.DTOs
         public double LegCount { get; set; }
         [JsonProperty("RebarSection")]
         public IRebarSection RebarSection { get; set; }
-
+        [JsonProperty("VisualProperty")]
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
 
         public StirrupByInclinedRebarDTO(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualPropertyDTO(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByRebarDTO.cs b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByRebarDTO.cs
index cd80a0c..1501b39 100644
--- a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByRebarDTO.cs
+++ b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupByRebarDTO.cs
@@ -1,6 +1,8 @@
 using Newtonsoft.Json;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.BeamShears;
 using StructureHelperLogics.Models.Materials;
+using System.Windows.Media;
 
 namespace DataAccess.DTOs
 {
@@ -9,23 +11,33 @@ namespace DataAccess.DTOs
         [JsonProperty("Id")]
         public Guid Id { get; }
         [JsonProperty("Name")]
-        public string? Name { get; set; }
+        public string? Name { get; set; } = string.Empty;
         [JsonProperty("LegCount")]
-        public double LegCount { get; set; }
+        public double LegCount { get; set; } = 2;
         [JsonProperty("Diameter")]
-        public double Diameter { get; set; }
+        public double Diameter { get; set; } = 0.008;
         [JsonProperty("Material")]
         public IReinforcementLibMaterial Material { get; set; }
         [JsonProperty("Spacing")]
-        public double Spacing { get; set; }
+        public double Spacing { get; set; } = 0.1;
         [JsonProperty("CompressedGap")]
-        public double CompressedGap { get; set; }
+        public double CompressedGap { get; set; } = 0;
         [JsonProperty("IsSpiral")]
         public bool IsSpiral { get; set; } = false;
+        [JsonProperty("StartCoordinate")]
+        public double StartCoordinate { get; set; } = 0;
+        [JsonProperty("EndCoordinate")]
+        public double EndCoordinate { get; set; } = 100;
+        [JsonProperty("VisualProperty")]
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
 
         public StirrupByRebarDTO(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualPropertyDTO(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupGroupDTO.cs b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupGroupDTO.cs
index dba7c39..128b466 100644
--- a/DataAccess/DTOs/DTOEntities/BeamShears/StirrupGroupDTO.cs
+++ b/DataAccess/DTOs/DTOEntities/BeamShears/StirrupGroupDTO.cs
@@ -1,5 +1,8 @@
 using Newtonsoft.Json;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.BeamShears;
+using StructureHelperLogics.NdmCalculations.Primitives;
+using System.Windows.Media;
 
 namespace DataAccess.DTOs
 {
@@ -8,20 +11,27 @@ namespace DataAccess.DTOs
         [JsonProperty("Id")]
         public Guid Id { get; }
         [JsonProperty("Name")]
-        public string? Name { get; set; }
+        public string? Name { get; set; } = string.Empty;
         [JsonProperty("CompressedGap")]
-        public double CompressedGap { get; set; }
+        public double CompressedGap { get; set; } = 0;
         [JsonProperty("Stirrups")]
         public List<IStirrup> Stirrups { get; } = new();
+        [JsonProperty("VisualProperty")]
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
+
         public StirrupGroupDTO(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualPropertyDTO(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
 
         public object Clone()
         {
-            throw new NotImplementedException();
+            return this;
         }
     }
 }
diff --git a/DataAccess/DTOs/DTOEntities/PrimitiveVisualPropertyDTO.cs b/DataAccess/DTOs/DTOEntities/PrimitiveVisualPropertyDTO.cs
new file mode 100644
index 0000000..5acaf92
--- /dev/null
+++ b/DataAccess/DTOs/DTOEntities/PrimitiveVisualPropertyDTO.cs
@@ -0,0 +1,32 @@
+using Newtonsoft.Json;
+using StructureHelperCommon.Models.VisualProperties;
+using StructureHelperCommon.Services.ColorServices;
+using System.Windows.Media;
+
+namespace DataAccess.DTOs
+{
+    public class PrimitiveVisualPropertyDTO : IPrimitiveVisualProperty
+    {
+        [JsonProperty("Id")]
+        public Guid Id { get; }
+        [JsonProperty("IsVisible")]
+        public bool IsVisible { get; set; } = true;
+        [JsonProperty("Color")]
+        public Color Color { get; set; } = ColorProcessor.GetRandomColor();
+        [JsonProperty("Zindex")]
+        public int ZIndex { get; set; } = 0;
+        [JsonProperty("Opacity")]
+        public double Opacity { get; set; } = 1;
+
+
+        public PrimitiveVisualPropertyDTO(Guid id)
+        {
+            Id = id;
+        }
+
+        public object Clone()
+        {
+            return this;
+        }
+    }
+}
diff --git a/DataAccess/DTOs/DTOEntities/TypeBinderListFactory.cs b/DataAccess/DTOs/DTOEntities/TypeBinderListFactory.cs
index e7224ca..d93c2b8 100644
--- a/DataAccess/DTOs/DTOEntities/TypeBinderListFactory.cs
+++ b/DataAccess/DTOs/DTOEntities/TypeBinderListFactory.cs
@@ -74,6 +74,7 @@ namespace DataAccess.DTOs
                 { (typeof(List<IVisualAnalysis>), "ListOfIVisualAnalysis") },
                 { (typeof(Point2DDTO), "Point2D") },
                 { (typeof(PointNdmPrimitiveDTO), "PointNdmPrimitive") },
+                { (typeof(PrimitiveVisualPropertyDTO), "PrimitiveVisualProperty") },
                 { (typeof(ProjectDTO), "Project") },
                 { (typeof(RebarNdmPrimitiveDTO), "RebarNdmPrimitive") },
                 { (typeof(RebarSectionDTO), "RebarSection") },
diff --git a/DataAccess/DTOs/DTOEntities/VisualPropertyDTO.cs b/DataAccess/DTOs/DTOEntities/VisualPropertyDTO.cs
index 320fdad..77b91cd 100644
--- a/DataAccess/DTOs/DTOEntities/VisualPropertyDTO.cs
+++ b/DataAccess/DTOs/DTOEntities/VisualPropertyDTO.cs
@@ -1,10 +1,5 @@
 using Newtonsoft.Json;
 using StructureHelperLogics.NdmCalculations.Primitives;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows.Media;
 
 namespace DataAccess.DTOs
@@ -24,5 +19,9 @@ namespace DataAccess.DTOs
         [JsonProperty("Opacity")]
         public double Opacity { get; set; }
 
+        public object Clone()
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/StructureHelper/Documentation/Manuals/Руководство пользователя.docx b/StructureHelper/Documentation/Manuals/Руководство пользователя.docx
index a5706e5..b148c7d 100644
Binary files a/StructureHelper/Documentation/Manuals/Руководство пользователя.docx and b/StructureHelper/Documentation/Manuals/Руководство пользователя.docx differ
diff --git a/StructureHelper/Properties/AssemblyInfo.cs b/StructureHelper/Properties/AssemblyInfo.cs
index 25e9474..8f94f98 100644
--- a/StructureHelper/Properties/AssemblyInfo.cs
+++ b/StructureHelper/Properties/AssemblyInfo.cs
@@ -49,5 +49,5 @@ using System.Windows;
 // Можно задать все значения или принять номера сборки и редакции по умолчанию 
 // используя "*", как показано ниже:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2025.06.23.01")]
-[assembly: AssemblyFileVersion("2025.06.23.01")]
+[assembly: AssemblyVersion("2025.07.23.01")]
+[assembly: AssemblyFileVersion("2025.07.23.01")]
diff --git a/StructureHelper/Properties/PublishProfiles/FolderProfile.pubxml.user b/StructureHelper/Properties/PublishProfiles/FolderProfile.pubxml.user
index 7ad803f..58d96ec 100644
--- a/StructureHelper/Properties/PublishProfiles/FolderProfile.pubxml.user
+++ b/StructureHelper/Properties/PublishProfiles/FolderProfile.pubxml.user
@@ -4,7 +4,7 @@ https://go.microsoft.com/fwlink/?LinkID=208121.
 -->
 <Project>
   <PropertyGroup>
-    <History>True|2025-01-27T09:32:31.9770658Z||;True|2024-12-29T20:48:11.7280613+05:00||;True|2024-12-27T13:24:44.0055462+05:00||;True|2024-11-13T09:16:22.8894163+05:00||;True|2024-08-13T14:00:35.8311260+05:00||;True|2024-08-12T12:59:16.1785759+05:00||;True|2024-03-11T20:33:14.1457807+05:00||;True|2024-03-10T19:11:27.6834663+05:00||;True|2024-02-02T12:22:50.1454015+05:00||;True|2023-02-25T13:37:39.2738786+05:00||;False|2023-02-25T13:37:24.0284261+05:00||;True|2023-02-25T13:34:01.6858860+05:00||;True|2023-02-25T13:31:18.8295711+05:00||;False|2023-02-25T13:25:21.5807199+05:00||;False|2023-02-25T13:24:41.7164398+05:00||;</History>
+    <History>True|2025-07-21T06:22:35.9564230Z||;True|2025-01-27T14:32:31.9770658+05:00||;True|2024-12-29T20:48:11.7280613+05:00||;True|2024-12-27T13:24:44.0055462+05:00||;True|2024-11-13T09:16:22.8894163+05:00||;True|2024-08-13T14:00:35.8311260+05:00||;True|2024-08-12T12:59:16.1785759+05:00||;True|2024-03-11T20:33:14.1457807+05:00||;True|2024-03-10T19:11:27.6834663+05:00||;True|2024-02-02T12:22:50.1454015+05:00||;True|2023-02-25T13:37:39.2738786+05:00||;False|2023-02-25T13:37:24.0284261+05:00||;True|2023-02-25T13:34:01.6858860+05:00||;True|2023-02-25T13:31:18.8295711+05:00||;False|2023-02-25T13:25:21.5807199+05:00||;False|2023-02-25T13:24:41.7164398+05:00||;</History>
     <LastFailureDetails />
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/StructureHelper/StructureHelper.csproj b/StructureHelper/StructureHelper.csproj
index a976cd8..684d0cc 100644
--- a/StructureHelper/StructureHelper.csproj
+++ b/StructureHelper/StructureHelper.csproj
@@ -8,7 +8,7 @@
     <UseWPF>true</UseWPF>
     <ImplicitUsings>disable</ImplicitUsings>
     <SupportedOSPlatformVersion>7.0</SupportedOSPlatformVersion>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>False</GenerateAssemblyInfo>
     <ApplicationIcon>Infrastructure\UI\Icons\SH_лого_16.ico</ApplicationIcon>
     <AssemblyVersion></AssemblyVersion>
   </PropertyGroup>
diff --git a/StructureHelper/StructureHelper.csproj.user b/StructureHelper/StructureHelper.csproj.user
index 32ecc72..9769907 100644
--- a/StructureHelper/StructureHelper.csproj.user
+++ b/StructureHelper/StructureHelper.csproj.user
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <_LastSelectedProfileId>D:\Repos\StructureHelper\StructureHelper\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
+    <_LastSelectedProfileId>C:\Repos\StructureHelper\StructureHelper\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
   </PropertyGroup>
   <ItemGroup>
     <ApplicationDefinition Update="App.xaml">
diff --git a/StructureHelper/Windows/BeamShears/BeamShearView.xaml b/StructureHelper/Windows/BeamShears/BeamShearView.xaml
index 809838d..ac41fe5 100644
--- a/StructureHelper/Windows/BeamShears/BeamShearView.xaml
+++ b/StructureHelper/Windows/BeamShears/BeamShearView.xaml
@@ -51,9 +51,7 @@
                 </Button>
             </ToolBar>
             <ToolBar ToolTip="Stirrups" DataContext="{Binding Stirrups}">
-                <Button Style="{StaticResource ToolButton}" 
-Command="{Binding Add}"
-CommandParameter="{x:Static enums:StirrupTypes.GroupOfStirrups}">
+                <Button Style="{StaticResource ToolButton}" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.GroupOfStirrups}">
                     <Button.ToolTip>
                         <uc:ButtonToolTipEh HeaderText="Add group of stirrup"
                         IconContent="{StaticResource TreeGroup}"
@@ -152,7 +150,15 @@ CommandParameter="{x:Static enums:StirrupTypes.GroupOfStirrups}">
                 </Grid.ColumnDefinitions>
                 <ScrollViewer>
                     <StackPanel>
-                        <Expander Header="Actions" DataContext="{Binding Actions}">
+                        <Expander DataContext="{Binding Actions}">
+                            <Expander.Header>
+                                <StackPanel Orientation="Horizontal">
+                                    <Viewbox Height="16" Width="16">
+                                        <ContentControl ContentTemplate="{DynamicResource DistributedLoad}"/>
+                                    </Viewbox>
+                                    <TextBlock Text="Actions"/>
+                                </StackPanel>
+                            </Expander.Header>
                             <Expander.ContextMenu>
                                 <ContextMenu>
                                     <MenuItem Header="Add" Command="{Binding Add}"/>
@@ -168,32 +174,29 @@ CommandParameter="{x:Static enums:StirrupTypes.GroupOfStirrups}">
                                 </ListBox.ItemTemplate>
                             </ListBox>
                         </Expander>
-                        <Expander Header="Cross-Sections" DataContext="{Binding Sections}">
-                            <ListBox ItemsSource="{Binding Items}" SelectedItem="{Binding SelectedItem}" ContextMenu="{StaticResource EditCopyDelete}">
-                                <ListBox.ItemTemplate>
-                                    <DataTemplate>
-                                        <Grid>
-                                            <TextBlock Text="{Binding Name}"/>
-                                        </Grid>
-                                    </DataTemplate>
-                                </ListBox.ItemTemplate>
-                            </ListBox>
-                        </Expander>
-                        <Expander Header="Stirrups" DataContext="{Binding Stirrups}">
+                        <Expander DataContext="{Binding Sections}">
+                            <Expander.Header>
+                                <StackPanel Orientation="Horizontal">
+                                    <Viewbox Height="16" Width="16">
+                                        <ContentControl ContentTemplate="{DynamicResource ShearRectangleSection}"/>
+                                    </Viewbox>
+                                    <TextBlock Text="Cross-sections"/>
+                                </StackPanel>
+                            </Expander.Header>
                             <Expander.ContextMenu>
                                 <ContextMenu>
                                     <MenuItem Header="Add">
-                                        <MenuItem Header="Uniformly distributed density" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.Density}">
+                                        <MenuItem Header="Rectangle section" Command="{Binding Add}" CommandParameter="{x:Static enums:PrimitiveType.Rectangle}">
                                             <MenuItem.Icon>
-                                                <Viewbox Height="24" Width="24">
-                                                    <ContentControl ContentTemplate="{DynamicResource StirrupDensity}"/>
+                                                <Viewbox Height="16" Width="16">
+                                                    <ContentControl ContentTemplate="{DynamicResource ShearRectangleSection}"/>
                                                 </Viewbox>
                                             </MenuItem.Icon>
                                         </MenuItem>
-                                        <MenuItem Header="Uniformly distributed rebars" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.UniformRebar}">
+                                        <MenuItem Header="Circle section" Command="{Binding Add}" CommandParameter="{x:Static enums:PrimitiveType.Circle}">
                                             <MenuItem.Icon>
-                                                <Viewbox Height="24" Width="24">
-                                                    <ContentControl ContentTemplate="{DynamicResource StirrupRebars}"/>
+                                                <Viewbox Height="16" Width="16">
+                                                    <ContentControl ContentTemplate="{DynamicResource ShearCircleSection}"/>
                                                 </Viewbox>
                                             </MenuItem.Icon>
                                         </MenuItem>
@@ -210,7 +213,68 @@ CommandParameter="{x:Static enums:StirrupTypes.GroupOfStirrups}">
                                 </ListBox.ItemTemplate>
                             </ListBox>
                         </Expander>
-                        <Expander Header="Calculators" DataContext="{Binding Calculators}">
+                        <Expander DataContext="{Binding Stirrups}">
+                            <Expander.Header>
+                                <StackPanel Orientation="Horizontal">
+                                    <Viewbox Height="16" Width="16">
+                                        <ContentControl ContentTemplate="{DynamicResource StirrupRebars}"/>
+                                    </Viewbox>
+                                    <TextBlock Text="Stirrups"/>
+                                </StackPanel>
+                            </Expander.Header>
+                            <Expander.ContextMenu>
+                                <ContextMenu>
+                                    <MenuItem Header="Add">
+                                        <MenuItem Header="Group of stirrup" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.GroupOfStirrups}">
+                                            <MenuItem.Icon>
+                                                <Viewbox Height="16" Width="16">
+                                                    <ContentControl ContentTemplate="{DynamicResource TreeGroup}"/>
+                                                </Viewbox>
+                                            </MenuItem.Icon>
+                                        </MenuItem>
+                                        <MenuItem Header="Uniformly distributed density" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.Density}">
+                                            <MenuItem.Icon>
+                                                <Viewbox Height="16" Width="16">
+                                                    <ContentControl ContentTemplate="{DynamicResource StirrupDensity}"/>
+                                                </Viewbox>
+                                            </MenuItem.Icon>
+                                        </MenuItem>
+                                        <MenuItem Header="Uniformly distributed rebars" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.UniformRebar}">
+                                            <MenuItem.Icon>
+                                                <Viewbox Height="16" Width="16">
+                                                    <ContentControl ContentTemplate="{DynamicResource StirrupRebars}"/>
+                                                </Viewbox>
+                                            </MenuItem.Icon>
+                                        </MenuItem>
+                                        <MenuItem Header="Inclined rebar" Command="{Binding Add}" CommandParameter="{x:Static enums:StirrupTypes.Density}">
+                                            <MenuItem.Icon>
+                                                <Viewbox Height="16" Width="16">
+                                                    <ContentControl ContentTemplate="{DynamicResource StirrupInclinedRebar}"/>
+                                                </Viewbox>
+                                            </MenuItem.Icon>
+                                        </MenuItem>
+                                    </MenuItem>
+                                </ContextMenu>
+                            </Expander.ContextMenu>
+                            <ListBox ItemsSource="{Binding Items}" SelectedItem="{Binding SelectedItem}" ContextMenu="{StaticResource EditCopyDelete}">
+                                <ListBox.ItemTemplate>
+                                    <DataTemplate>
+                                        <Grid>
+                                            <TextBlock Text="{Binding Name}"/>
+                                        </Grid>
+                                    </DataTemplate>
+                                </ListBox.ItemTemplate>
+                            </ListBox>
+                        </Expander>
+                        <Expander DataContext="{Binding Calculators}">
+                            <Expander.Header>
+                                <StackPanel Orientation="Horizontal">
+                                    <Viewbox Height="16" Width="16">
+                                        <ContentControl ContentTemplate="{DynamicResource ShearCalculator}"/>
+                                    </Viewbox>
+                                    <TextBlock Text="Calculators"/>
+                                </StackPanel>
+                            </Expander.Header>
                             <Expander.ContextMenu>
                                 <ContextMenu>
                                     <MenuItem Header="Add">
diff --git a/StructureHelper/Windows/BeamShears/StirrupByDensityView.xaml b/StructureHelper/Windows/BeamShears/StirrupByDensityView.xaml
index 871b2b5..4ac48dc 100644
--- a/StructureHelper/Windows/BeamShears/StirrupByDensityView.xaml
+++ b/StructureHelper/Windows/BeamShears/StirrupByDensityView.xaml
@@ -12,21 +12,42 @@
             <RowDefinition/>
             <RowDefinition Height="40"/>
         </Grid.RowDefinitions>
-        <Grid>
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition/>
-                <ColumnDefinition/>
-            </Grid.ColumnDefinitions>
-            <Grid.RowDefinitions>
-                <RowDefinition Height="25"/>
-                <RowDefinition Height="25"/>
-                <RowDefinition/>
-            </Grid.RowDefinitions>
-            <TextBlock Text="Name"/>
-            <TextBox Grid.Column="1" Text="{Binding Name}"/>
-            <TextBlock Grid.Row="1" Text="Density"/>
-            <TextBox Grid.Row="1" Grid.Column="1" Style="{StaticResource ValidatedError}" Text="{Binding Density, Converter={StaticResource DistributedLoadConverter}, ValidatesOnDataErrors=True}"/>
-        </Grid>
+        <TabControl>
+            <TabItem Header="Main">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition/>
+                        <ColumnDefinition/>
+                    </Grid.ColumnDefinitions>
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="25"/>
+                        <RowDefinition Height="25"/>
+                        <RowDefinition/>
+                    </Grid.RowDefinitions>
+                    <TextBlock Text="Name"/>
+                    <TextBox Grid.Column="1" Text="{Binding Name}"/>
+                    <TextBlock Grid.Row="1" Text="Density"/>
+                    <TextBox Grid.Row="1" Grid.Column="1" Style="{StaticResource ValidatedError}" Text="{Binding Density, Converter={StaticResource DistributedLoadConverter}, ValidatesOnDataErrors=True}"/>
+                </Grid>
+            </TabItem>
+            <TabItem Header="Misc.">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition/>
+                        <ColumnDefinition/>
+                    </Grid.ColumnDefinitions>
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="25"/>
+                        <RowDefinition Height="25"/>
+                        <RowDefinition/>
+                    </Grid.RowDefinitions>
+                    <TextBlock Grid.Row="0" Text="Start coordinate"/>
+                    <TextBox Grid.Row="0" Grid.Column="1" Style="{StaticResource ValidatedError}" Text="{Binding StartCoordinate, Converter={StaticResource LengthConverter},ValidatesOnDataErrors=True}"/>
+                    <TextBlock Grid.Row="1" Text="End coordinate"/>
+                    <TextBox Grid.Row="1" Grid.Column="1" Style="{StaticResource ValidatedError}" Text="{Binding EndCoordinate, Converter={StaticResource LengthConverter},ValidatesOnDataErrors=True}"/>
+                </Grid>
+            </TabItem>
+        </TabControl>
         <ContentControl Grid.Row="1" ContentTemplate="{StaticResource OkCancelButtons}" Content="{Binding}"/>
     </Grid>
 </Window>
diff --git a/StructureHelper/Windows/BeamShears/StirrupByDensityViewModel.cs b/StructureHelper/Windows/BeamShears/StirrupByDensityViewModel.cs
index d3e9d14..d2e4a23 100644
--- a/StructureHelper/Windows/BeamShears/StirrupByDensityViewModel.cs
+++ b/StructureHelper/Windows/BeamShears/StirrupByDensityViewModel.cs
@@ -28,6 +28,28 @@ namespace StructureHelper.Windows.BeamShears
             }
         }
 
+        public double StartCoordinate
+        {
+            get => stirrupByDensity.StartCoordinate;
+            set
+            {
+                if (value < 0) { value = 0; }
+                stirrupByDensity.StartCoordinate = value;
+                OnPropertyChanged(nameof(StartCoordinate));
+            }
+        }
+
+        public double EndCoordinate
+        {
+            get => stirrupByDensity.EndCoordinate;
+            set
+            {
+                if (value < 0) { value = 0; }
+                stirrupByDensity.EndCoordinate = value;
+                OnPropertyChanged(nameof(EndCoordinate));
+            }
+        }
+
         public string Error => null;
 
         public string this[string columnName]
diff --git a/StructureHelper/Windows/BeamShears/StirrupByRebarView.xaml b/StructureHelper/Windows/BeamShears/StirrupByRebarView.xaml
index 21816a6..d48c2a0 100644
--- a/StructureHelper/Windows/BeamShears/StirrupByRebarView.xaml
+++ b/StructureHelper/Windows/BeamShears/StirrupByRebarView.xaml
@@ -44,6 +44,23 @@
             <TabItem Header="Material" DataContext="{Binding Material}">
                 <ContentControl ContentTemplate="{StaticResource ReinforcementMaterial}" Content="{Binding}"/>
             </TabItem>
+            <TabItem Header="Misc.">
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition/>
+                        <ColumnDefinition/>
+                    </Grid.ColumnDefinitions>
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="25"/>
+                        <RowDefinition Height="25"/>
+                        <RowDefinition/>
+                    </Grid.RowDefinitions>
+                    <TextBlock Grid.Row="0" Text="Start coordinate"/>
+                    <TextBox Grid.Row="0" Grid.Column="1" Style="{StaticResource ValidatedError}" Text="{Binding StartCoordinate, Converter={StaticResource LengthConverter},ValidatesOnDataErrors=True}"/>
+                    <TextBlock Grid.Row="1" Text="End coordinate"/>
+                    <TextBox Grid.Row="1" Grid.Column="1" Style="{StaticResource ValidatedError}" Text="{Binding EndCoordinate, Converter={StaticResource LengthConverter},ValidatesOnDataErrors=True}"/>
+                </Grid>
+            </TabItem>
         </TabControl>
         <ContentControl Grid.Row="1" ContentTemplate="{StaticResource OkCancelButtons}" Content="{Binding}"/>
     </Grid>
diff --git a/StructureHelper/Windows/BeamShears/StirrupByRebarViewModel.cs b/StructureHelper/Windows/BeamShears/StirrupByRebarViewModel.cs
index 01b3941..a4218ec 100644
--- a/StructureHelper/Windows/BeamShears/StirrupByRebarViewModel.cs
+++ b/StructureHelper/Windows/BeamShears/StirrupByRebarViewModel.cs
@@ -60,6 +60,28 @@ namespace StructureHelper.Windows.BeamShears
             }
         }
 
+        public double StartCoordinate
+        {
+            get => stirrupByRebar.StartCoordinate;
+            set
+            {
+                if (value < 0) { value = 0;}
+                stirrupByRebar.StartCoordinate = value;
+                OnPropertyChanged(nameof(StartCoordinate));
+            }
+        }
+
+        public double EndCoordinate
+        {
+            get => stirrupByRebar.EndCoordinate;
+            set
+            {
+                if (value < 0) { value = 0; }
+                stirrupByRebar.EndCoordinate = value;
+                OnPropertyChanged(nameof(EndCoordinate));
+            }
+        }
+
         public bool IsSpiral
         {
             get => stirrupByRebar.IsSpiral;
@@ -104,7 +126,21 @@ namespace StructureHelper.Windows.BeamShears
                 {
                     if (Spacing < MinSpacing)
                     {
-                        result = $"Spacing of stirrups must not be less than {MinSpacing}";
+                        result = $"Spacing of stirrups must not be less than {MinSpacing}(m)";
+                    }
+                }
+                if (columnName == nameof(StartCoordinate))
+                {
+                    if (StartCoordinate < 0)
+                    {
+                        result = $"Start coordinate must not be less than zero";
+                    }
+                }
+                if (columnName == nameof(EndCoordinate))
+                {
+                    if (EndCoordinate < StartCoordinate)
+                    {
+                        result = $"End coordinate must not be greate than start coordinate {StartCoordinate}(m)";
                     }
                 }
                 return result;
diff --git a/StructureHelper/Windows/MainWindow/AboutView.xaml b/StructureHelper/Windows/MainWindow/AboutView.xaml
index ab2a6aa..20a9e48 100644
--- a/StructureHelper/Windows/MainWindow/AboutView.xaml
+++ b/StructureHelper/Windows/MainWindow/AboutView.xaml
@@ -7,7 +7,7 @@
         xmlns:vm="clr-namespace:StructureHelper.Windows.ViewModels.Help"
         mc:Ignorable="d"
         d:DataContext="{d:DesignInstance vm:AboutViewModel}"
-        Title="Structure Helper" Height="250" Width="400" ResizeMode="NoResize" WindowStartupLocation="CenterScreen">
+        Title="Structure Helper" Height="300" Width="400" ResizeMode="NoResize" WindowStartupLocation="CenterScreen">
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="22"/>
@@ -17,6 +17,8 @@
             <RowDefinition Height="22"/>
             <RowDefinition Height="22"/>
             <RowDefinition Height="22"/>
+            <RowDefinition Height="22"/>
+            <RowDefinition Height="22"/>
             <RowDefinition/>
             <RowDefinition Height="40"/>
         </Grid.RowDefinitions>
@@ -24,11 +26,13 @@
         <TextBlock Grid.Row="1" Text="{Binding Authors}"/>
         <TextBlock Grid.Row="2" Text="Version"/>
         <TextBlock Grid.Row="3" Text="{Binding Version}"/>
-        <TextBlock Grid.Row="4" Text="Copy Right (c) Redikultsev Evgeny"/>
-        <TextBlock Grid.Row="5" Text="www.structurehelper.ru"/>
-        <TextBlock Grid.Row="6" Text="https://vk.com/structurehelper"/>
-        <TextBlock Grid.Row="7" Text="https://t.me/StructureHelper"/>
+        <TextBlock Grid.Row="4" Text="Assembly"/>
+        <TextBlock Grid.Row="5" Text="{Binding Assembly}"/>
+        <TextBlock Grid.Row="6" Text="Copy Right (c) Redikultsev Evgeny"/>
+        <TextBlock Grid.Row="7" Text="www.structurehelper.ru"/>
+        <TextBlock Grid.Row="8" Text="https://vk.com/structurehelper"/>
+        <TextBlock Grid.Row="9" Text="https://t.me/StructureHelper"/>
         
-        <Button Grid.Row="8" Style="{StaticResource OkButton}" Click="Button_Click"/>
+        <Button Grid.Row="10" Style="{StaticResource OkButton}" Click="Button_Click"/>
     </Grid>
 </Window>
diff --git a/StructureHelper/Windows/ViewModels/Help/AboutViewModel.cs b/StructureHelper/Windows/ViewModels/Help/AboutViewModel.cs
index 81a7bbe..d0f763c 100644
--- a/StructureHelper/Windows/ViewModels/Help/AboutViewModel.cs
+++ b/StructureHelper/Windows/ViewModels/Help/AboutViewModel.cs
@@ -1,8 +1,11 @@
 using StructureHelper.Infrastructure;
+using StructureHelperCommon.Infrastructures.Settings;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading.Tasks;
 
@@ -11,15 +14,26 @@ namespace StructureHelper.Windows.ViewModels.Help
 {
     internal class AboutViewModel : OkCancelViewModelBase
     {
-        public string Authors => "Redikultsev Evgeny";
-        public string Version
+        public string Authors => "Redikultsev Evgeny, Redikultseva Svetlana";
+        public string Assembly
         {
             get
             {
                 string version;
-                version = Assembly.GetExecutingAssembly().GetName().Version.ToString();
+                version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
                 return version;
             }
         }
+
+        private string version1;
+
+        public string Version
+        {
+            get
+            {
+                var fileVersion = ProgramSetting.GetCurrentFileVersion();
+                return $"{fileVersion.VersionNumber}.{fileVersion.SubVersionNumber}";
+            }
+        }
     }
 }
diff --git a/StructureHelperCommon/Models/VisualProperties/IHasVisualProperty.cs b/StructureHelperCommon/Models/VisualProperties/IHasVisualProperty.cs
new file mode 100644
index 0000000..6c26d57
--- /dev/null
+++ b/StructureHelperCommon/Models/VisualProperties/IHasVisualProperty.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.VisualProperties
+{
+    public interface IHasVisualProperty
+    {
+        IPrimitiveVisualProperty VisualProperty { get; set; }
+    }
+}
diff --git a/StructureHelperCommon/Models/VisualProperties/IPrimitiveVisualProperty.cs b/StructureHelperCommon/Models/VisualProperties/IPrimitiveVisualProperty.cs
new file mode 100644
index 0000000..5934097
--- /dev/null
+++ b/StructureHelperCommon/Models/VisualProperties/IPrimitiveVisualProperty.cs
@@ -0,0 +1,33 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+
+namespace StructureHelperCommon.Models.VisualProperties
+{
+    /// <summary>
+    /// Implements visual settings for graphical primetives
+    /// </summary>
+    public interface IPrimitiveVisualProperty : ISaveable, ICloneable
+    {
+        /// <summary>
+        /// Flag of visibility
+        /// </summary>
+        bool IsVisible { get; set; }
+        /// <summary>
+        /// Color of primitive
+        /// </summary>
+        Color Color { get; set; }
+        /// <summary>
+        /// Index by z-coordinate
+        /// </summary>
+        int ZIndex { get; set; }
+        /// <summary>
+        /// Opacity of filling
+        /// </summary>
+        double Opacity { get; set; }
+    }
+}
diff --git a/StructureHelperCommon/Models/VisualProperties/PrimitiveVisualProperty.cs b/StructureHelperCommon/Models/VisualProperties/PrimitiveVisualProperty.cs
new file mode 100644
index 0000000..17a0030
--- /dev/null
+++ b/StructureHelperCommon/Models/VisualProperties/PrimitiveVisualProperty.cs
@@ -0,0 +1,54 @@
+using StructureHelperCommon.Services.ColorServices;
+using System;
+using System.Windows.Media;
+
+namespace StructureHelperCommon.Models.VisualProperties
+{
+    /// <inheritdoc/>
+    public class PrimitiveVisualProperty : IPrimitiveVisualProperty
+    {
+        private double opacity = 0;
+
+        /// <inheritdoc/>
+        public Guid Id { get; }
+        /// <inheritdoc/>
+        public bool IsVisible { get; set; } = true;
+        /// <inheritdoc/>
+        public Color Color { get; set; } = ColorProcessor.GetRandomColor();
+        /// <inheritdoc/>
+        public int ZIndex { get; set; } = 0;
+        /// <inheritdoc/>
+        public double Opacity
+        {
+            get => opacity;
+            set
+            {
+                if (value < 0)
+                {
+                    opacity = 1;
+                    return;
+                }
+                if (value > 1)
+                {
+                    opacity = 1;
+                    return;
+                }
+                opacity = value;
+            }
+        }
+
+
+        public PrimitiveVisualProperty(Guid id)
+        {
+            Id = id;
+        }
+
+        public object Clone()
+        {
+            var logic = new PrimitiveVisualPropertyUpdateStrategy();
+            PrimitiveVisualProperty newItem = new(Guid.NewGuid());
+            logic.Update(newItem, this);
+            return newItem;
+        }
+    }
+}
diff --git a/StructureHelperCommon/Models/VisualProperties/PrimitiveVisualPropertyUpdateStrategy.cs b/StructureHelperCommon/Models/VisualProperties/PrimitiveVisualPropertyUpdateStrategy.cs
new file mode 100644
index 0000000..a9a074a
--- /dev/null
+++ b/StructureHelperCommon/Models/VisualProperties/PrimitiveVisualPropertyUpdateStrategy.cs
@@ -0,0 +1,20 @@
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Services;
+
+namespace StructureHelperCommon.Models.VisualProperties
+{
+    public class PrimitiveVisualPropertyUpdateStrategy : IUpdateStrategy<IPrimitiveVisualProperty>
+    {
+        public void Update(IPrimitiveVisualProperty targetObject, IPrimitiveVisualProperty sourceObject)
+        {
+            CheckObject.IsNull(sourceObject, ErrorStrings.SourceObject);
+            CheckObject.IsNull(targetObject, ErrorStrings.TargetObject);
+            if (ReferenceEquals(targetObject, sourceObject)) { return; }
+            targetObject.IsVisible = sourceObject.IsVisible;
+            targetObject.Color = sourceObject.Color;
+            targetObject.Opacity = sourceObject.Opacity;
+            targetObject.ZIndex = sourceObject.ZIndex;
+        }
+    }
+}
diff --git a/StructureHelperLogics/Models/BeamShears/IHasStartEndCoordinate.cs b/StructureHelperLogics/Models/BeamShears/IHasStartEndCoordinate.cs
new file mode 100644
index 0000000..b33ade1
--- /dev/null
+++ b/StructureHelperLogics/Models/BeamShears/IHasStartEndCoordinate.cs
@@ -0,0 +1,14 @@
+namespace StructureHelperLogics.Models.BeamShears
+{
+    public interface IHasStartEndCoordinate
+    {
+        /// <summary>
+        /// Coordinate of start of zone of stirrups
+        /// </summary>
+        double StartCoordinate { get; set; }
+        /// <summary>
+        /// Coordinate of end of zone of stirrups
+        /// </summary>
+        double EndCoordinate { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperLogics/Models/BeamShears/IStirrup.cs b/StructureHelperLogics/Models/BeamShears/IStirrup.cs
index e411182..22ab75d 100644
--- a/StructureHelperLogics/Models/BeamShears/IStirrup.cs
+++ b/StructureHelperLogics/Models/BeamShears/IStirrup.cs
@@ -1,4 +1,5 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.VisualProperties;
 
 //Copyright (c) 2025 Redikultsev Evgeny, Ekaterinburg, Russia
 //All rights reserved.
@@ -8,12 +9,13 @@ namespace StructureHelperLogics.Models.BeamShears
     /// <summary>
     /// Implement properties of stirrups
     /// </summary>
-    public interface IStirrup : ISaveable, ICloneable
+    public interface IStirrup : ISaveable, ICloneable, IHasVisualProperty
     {
         string? Name { get; set; }
         /// <summary>
         /// Distance from axis of comressed rebar to edge of comressed zone, m 
         /// </summary>
         double CompressedGap { get; set; }
+
     }
 }
diff --git a/StructureHelperLogics/Models/BeamShears/IStirrupByDensity.cs b/StructureHelperLogics/Models/BeamShears/IStirrupByDensity.cs
index c562af2..76809e3 100644
--- a/StructureHelperLogics/Models/BeamShears/IStirrupByDensity.cs
+++ b/StructureHelperLogics/Models/BeamShears/IStirrupByDensity.cs
@@ -9,7 +9,7 @@ namespace StructureHelperLogics.Models.BeamShears
     /// <summary>
     /// Implement logic for calculation of bearing capacity of stirrups by value of their density
     /// </summary>
-    public interface IStirrupByDensity : IStirrup
+    public interface IStirrupByDensity : IStirrup, IHasStartEndCoordinate
     {
         /// <summary>
         /// Direct density of stirrups, N/m
diff --git a/StructureHelperLogics/Models/BeamShears/IStirrupByRebar.cs b/StructureHelperLogics/Models/BeamShears/IStirrupByRebar.cs
index 06ce4da..56d9ec8 100644
--- a/StructureHelperLogics/Models/BeamShears/IStirrupByRebar.cs
+++ b/StructureHelperLogics/Models/BeamShears/IStirrupByRebar.cs
@@ -10,7 +10,7 @@ namespace StructureHelperLogics.Models.BeamShears
     /// <summary>
     /// Implement properties for uniformly distributed stirrups
     /// </summary>
-    public interface IStirrupByRebar : IStirrup
+    public interface IStirrupByRebar : IStirrup, IHasStartEndCoordinate
     {
         /// <summary>
         /// Material of stirrups
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByDensityCheckLogic.cs b/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByDensityCheckLogic.cs
index 60c5621..cc69604 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByDensityCheckLogic.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByDensityCheckLogic.cs
@@ -37,16 +37,31 @@ namespace StructureHelperLogics.Models.BeamShears
             }
             else
             {
-                if (Entity.StirrupDensity < minDensity)
-                {
-                    result = false;
-                    TraceMessage($"\nStirrup {Entity.Name} density d = {Entity.StirrupDensity} must not be less than dmin = {minDensity}");
-                }
+                CheckEntity();
             }
 
             return result;
         }
 
+        private void CheckEntity()
+        {
+            if (Entity.StirrupDensity < minDensity)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} density d = {Entity.StirrupDensity} must not be less than dmin = {minDensity}");
+            }
+            if (Entity.StartCoordinate < 0)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} start coordinate must not be less than zero, but was {Entity.StartCoordinate}");
+            }
+            if (Entity.EndCoordinate <= Entity.StartCoordinate)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} start coordinate must be less than end coordinte, but was Xstart = {Entity.StartCoordinate}(m), Xend = {Entity.EndCoordinate}(m)");
+            }
+        }
+
         private void TraceMessage(string errorString)
         {
             checkResult += errorString;
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByRebarCheckLogic.cs b/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByRebarCheckLogic.cs
index d42134d..bc2bab2 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByRebarCheckLogic.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/CheckStrategies/StirrupByRebarCheckLogic.cs
@@ -41,34 +41,50 @@ namespace StructureHelperLogics.Models.BeamShears
             }
             else
             {
-                if (Entity.Diameter < minDiameter)
-                {
-                    result = false;
-                    TraceMessage($"\nStirrup {Entity.Name} diameter d = {Entity.Diameter} must not be less than dmin = {minDiameter}");
-                }
-                if (Entity.Diameter > maxDiameter)
-                {
-                    result = false;
-                    TraceMessage($"\nStirrup {Entity.Name} diameter d = {Entity.Diameter} must be less or equal than dmax = {maxDiameter}");
-                }
-                if (Entity.Spacing < minSpacing)
-                {
-                    result = false;
-                    TraceMessage($"\nStirrup {Entity.Name} spacing s = {Entity.Spacing} must not be less than smin = {minSpacing}");
-                }
-                if (Entity.Spacing > maxSpacing)
-                {
-                    result = false;
-                    TraceMessage($"\nStirrup {Entity.Name} spacing s = {Entity.Spacing} must be less or equal than smax = {maxSpacing}");
-                }
-                if (Entity.LegCount < minLegCount)
-                {
-                    result = false;
-                    TraceMessage($"\nStirrup {Entity.Name} leg count n = {Entity.LegCount} must not be less than nmin = {minLegCount}");
-                }
+                CheckEntity();
             }
             return result;
         }
+
+        private void CheckEntity()
+        {
+            if (Entity.Diameter < minDiameter)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} diameter d = {Entity.Diameter} must not be less than dmin = {minDiameter}");
+            }
+            if (Entity.Diameter > maxDiameter)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} diameter d = {Entity.Diameter} must be less or equal than dmax = {maxDiameter}");
+            }
+            if (Entity.Spacing < minSpacing)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} spacing s = {Entity.Spacing} must not be less than smin = {minSpacing}");
+            }
+            if (Entity.Spacing > maxSpacing)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} spacing s = {Entity.Spacing} must be less or equal than smax = {maxSpacing}");
+            }
+            if (Entity.LegCount < minLegCount)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} leg count n = {Entity.LegCount} must not be less than nmin = {minLegCount}");
+            }
+            if (Entity.StartCoordinate < 0)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} start coordinate must not be less than zero, but was {Entity.StartCoordinate}");
+            }
+            if (Entity.EndCoordinate <= Entity.StartCoordinate)
+            {
+                result = false;
+                TraceMessage($"\nStirrup {Entity.Name} start coordinate must be less than end coordinte, but was Xstart = {Entity.StartCoordinate}(m), Xend = {Entity.EndCoordinate}(m)");
+            }
+        }
+
         private void TraceMessage(string errorString)
         {
             checkResult += errorString;
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/GetReducedAreaLogicSP63_2018_rev3.cs b/StructureHelperLogics/Models/BeamShears/Logics/GetReducedAreaLogicSP63_2018_rev3.cs
index c9dc991..e3494e7 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/GetReducedAreaLogicSP63_2018_rev3.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/GetReducedAreaLogicSP63_2018_rev3.cs
@@ -1,5 +1,7 @@
-using StructureHelperCommon.Models;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Models;
 using StructureHelperCommon.Models.Loggers;
+using StructureHelperCommon.Models.Shapes;
 
 namespace StructureHelperLogics.Models.BeamShears
 {
@@ -91,7 +93,18 @@ namespace StructureHelperLogics.Models.BeamShears
         private void GetAreas()
         {
             reducingFactor = reinforcementModulus / concreteModulus;
-            concreteArea = inclinedSection.WebWidth * inclinedSection.FullDepth;
+            if (inclinedSection.BeamShearSection.Shape is IRectangleShape)
+            {
+                concreteArea = inclinedSection.WebWidth * inclinedSection.FullDepth;
+            }
+            else if (inclinedSection.BeamShearSection.Shape is ICircleShape)
+            {
+                concreteArea = inclinedSection.WebWidth * inclinedSection.FullDepth * 0.785398; // * 0.785398 = PI/4
+            }
+            else
+            {
+                throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(inclinedSection.BeamShearSection.Shape));
+            }
             TraceLogger?.AddMessage($"Concrete area Ac = {concreteArea}(m^2)");
             reinforcementArea = inclinedSection.BeamShearSection.ReinforcementArea;
             TraceLogger?.AddMessage($"Reinforcement area As = {reinforcementArea}(m^2)");
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/StirrupBaseUpdateStrategy.cs b/StructureHelperLogics/Models/BeamShears/Logics/StirrupBaseUpdateStrategy.cs
index 8ee645e..b8e153e 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/StirrupBaseUpdateStrategy.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/StirrupBaseUpdateStrategy.cs
@@ -1,10 +1,14 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperCommon.Services;
 
 namespace StructureHelperLogics.Models.BeamShears
 {
-    public class StirrupBaseUpdateStrategy : IUpdateStrategy<IStirrup>
+    public class StirrupBaseUpdateStrategy : IParentUpdateStrategy<IStirrup>
     {
+        private IUpdateStrategy<IPrimitiveVisualProperty> visualUpdateStrategy;
+        public bool UpdateChildren { get; set; } = true;
+
         public void Update(IStirrup targetObject, IStirrup sourceObject)
         {
             CheckObject.IsNull(targetObject);
@@ -12,6 +16,18 @@ namespace StructureHelperLogics.Models.BeamShears
             if (ReferenceEquals(targetObject, sourceObject)) { return; }
             targetObject.Name = sourceObject.Name;
             targetObject.CompressedGap = sourceObject.CompressedGap;
+            if (UpdateChildren == true)
+            {
+                UpdateTargetChildren(targetObject, sourceObject);
+            }
+        }
+
+        private void UpdateTargetChildren(IStirrup targetObject, IStirrup sourceObject)
+        {
+            CheckObject.IsNull(sourceObject.VisualProperty);
+            CheckObject.IsNull(targetObject.VisualProperty);
+            visualUpdateStrategy ??= new PrimitiveVisualPropertyUpdateStrategy();
+            visualUpdateStrategy.Update(targetObject.VisualProperty, sourceObject.VisualProperty);
         }
     }
 }
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityStrengthLogic.cs b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityStrengthLogic.cs
index e2a9412..828b81d 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityStrengthLogic.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityStrengthLogic.cs
@@ -38,10 +38,14 @@ namespace StructureHelperLogics.Models.BeamShears
             TraceLogger?.AddMessage("Calculation has been started", TraceLogStatuses.Debug);
             double crackLength = inclinedSection.EndCoord - inclinedSection.StartCoord;
             TraceLogger?.AddMessage($"Length of crack = {inclinedSection.EndCoord} - {inclinedSection.StartCoord} = {crackLength}(m)");
+            double crackEndCoord = Math.Min(stirrupByDensity.EndCoordinate, inclinedSection.EndCoord);
+            double crackStartCoord = Math.Max(stirrupByDensity.StartCoordinate, inclinedSection.StartCoord);
+            double crackLengthViaStirrup = crackEndCoord - crackStartCoord;
+            TraceLogger?.AddMessage($"Length of crack via stirrup = {crackEndCoord} - {crackStartCoord} = {crackLengthViaStirrup}(m)");
             double maxCrackLength = stirrupEffectiveness.MaxCrackLengthRatio * inclinedSection.EffectiveDepth;
             TraceLogger?.AddMessage($"Max length of crack = {stirrupEffectiveness.MaxCrackLengthRatio} * {inclinedSection.EffectiveDepth} = {maxCrackLength}(m)");
-            double finalCrackLength = Math.Min(crackLength, maxCrackLength);
-            TraceLogger?.AddMessage($"Length of crack = Min({crackLength}, {maxCrackLength}) = {finalCrackLength}(m)");
+            double finalCrackLength = Math.Min(crackLengthViaStirrup, maxCrackLength);
+            TraceLogger?.AddMessage($"Length of crack = Min({crackLengthViaStirrup}, {maxCrackLength}) = {finalCrackLength}(m)");
             double finalDensity = stirrupEffectiveness.StirrupShapeFactor * stirrupEffectiveness.StirrupPlacementFactor * stirrupByDensity.StirrupDensity;
             TraceLogger?.AddMessage($"Stirrups design density qsw = {stirrupEffectiveness.StirrupShapeFactor} * {stirrupEffectiveness.StirrupPlacementFactor} * {stirrupByDensity.StirrupDensity} = {finalDensity}(N/m)");
             double concreteDensity = inclinedSection.WebWidth * inclinedSection.ConcreteTensionStrength;
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityUpdateStrategy.cs b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityUpdateStrategy.cs
index 4d951f5..dd421e1 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityUpdateStrategy.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByDensityUpdateStrategy.cs
@@ -17,6 +17,8 @@ namespace StructureHelperLogics.Models.BeamShears
             baseUpdateStrategy ??= new StirrupBaseUpdateStrategy();
             baseUpdateStrategy.Update(targetObject, sourceObject);
             targetObject.StirrupDensity = sourceObject.StirrupDensity;
+            targetObject.StartCoordinate = sourceObject.StartCoordinate;
+            targetObject.EndCoordinate = sourceObject.EndCoordinate;
         }
     }
 }
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarToDensityConvertStrategy.cs b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarToDensityConvertStrategy.cs
index 812fec5..1a8e1e5 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarToDensityConvertStrategy.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarToDensityConvertStrategy.cs
@@ -32,6 +32,8 @@ namespace StructureHelperLogics.Models.BeamShears
             StirrupByDensity stirrupByDensity = new(Guid.NewGuid());
             updateStrategy.Update(stirrupByDensity, source);
             stirrupByDensity.StirrupDensity = GetStirrupDensity(source);
+            stirrupByDensity.StartCoordinate = source.StartCoordinate;
+            stirrupByDensity.EndCoordinate = source.EndCoordinate;
             return stirrupByDensity;
         }
 
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarUpdateStrategy.cs b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarUpdateStrategy.cs
index 65f7a0b..e9cc596 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarUpdateStrategy.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/StirrupByRebarUpdateStrategy.cs
@@ -25,6 +25,8 @@ namespace StructureHelperLogics.Models.BeamShears
             targetObject.LegCount = sourceObject.LegCount;
             targetObject.Spacing = sourceObject.Spacing;
             targetObject.IsSpiral = sourceObject.IsSpiral;
+            targetObject.StartCoordinate = sourceObject.StartCoordinate;
+            targetObject.EndCoordinate = sourceObject.EndCoordinate;
         }
     }
 }
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/StirrupBySearchLogic.cs b/StructureHelperLogics/Models/BeamShears/Logics/StirrupBySearchLogic.cs
index 2f3f9d0..eaf5768 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/StirrupBySearchLogic.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/StirrupBySearchLogic.cs
@@ -18,7 +18,7 @@ namespace StructureHelperLogics.Models.BeamShears
 
         public double GetShearStrength()
         {
-            double parameter = GetInclinedCrackRatio();
+            double parameter = GetCrackLengthRatio();
             BeamShearSectionLogicInputData newInputData = GetNewInputDataByCrackLengthRatio(parameter);
             TraceLogger?.AddMessage($"New value of dangerous inclinated crack has been obtained: start point Xstart = {newInputData.InclinedSection.StartCoord}(m), end point Xend = {newInputData.InclinedSection.EndCoord}(m)");
             stirrupLogic = new(newInputData, TraceLogger);
@@ -31,7 +31,7 @@ namespace StructureHelperLogics.Models.BeamShears
         /// </summary>
         /// <returns></returns>
         /// <exception cref="StructureHelperException"></exception>
-        private double GetInclinedCrackRatio()
+        private double GetCrackLengthRatio()
         {
             var parameterCalculator = new FindParameterCalculator();
             parameterCalculator.InputData.Predicate = GetPredicate;
@@ -48,6 +48,7 @@ namespace StructureHelperLogics.Models.BeamShears
             {
                 crackLengthRatio += 0.0001;
             }
+            crackLengthRatio = Math.Max(crackLengthRatio, 0);
             return crackLengthRatio;
         }
         /// <summary>
diff --git a/StructureHelperLogics/Models/BeamShears/Logics/UpdateLogics/StirrupGroupUpdateStrategy.cs b/StructureHelperLogics/Models/BeamShears/Logics/UpdateLogics/StirrupGroupUpdateStrategy.cs
index d35ded0..0fed14a 100644
--- a/StructureHelperLogics/Models/BeamShears/Logics/UpdateLogics/StirrupGroupUpdateStrategy.cs
+++ b/StructureHelperLogics/Models/BeamShears/Logics/UpdateLogics/StirrupGroupUpdateStrategy.cs
@@ -16,7 +16,10 @@ namespace StructureHelperLogics.Models.BeamShears
             CheckObject.IsNull(sourceObject, ErrorStrings.SourceObject);
             CheckObject.IsNull(targetObject, ErrorStrings.TargetObject);
             if (ReferenceEquals(targetObject, sourceObject)) { return; }
-            baseUpdateStrategy ??= new StirrupBaseUpdateStrategy();
+            baseUpdateStrategy ??= new StirrupBaseUpdateStrategy()
+            {
+                UpdateChildren = this.UpdateChildren
+            };
             baseUpdateStrategy.Update(targetObject, sourceObject);
             if (UpdateChildren == true)
             {
diff --git a/StructureHelperLogics/Models/BeamShears/StirrupByDensity.cs b/StructureHelperLogics/Models/BeamShears/StirrupByDensity.cs
index bb9284f..bd3ac60 100644
--- a/StructureHelperLogics/Models/BeamShears/StirrupByDensity.cs
+++ b/StructureHelperLogics/Models/BeamShears/StirrupByDensity.cs
@@ -1,4 +1,7 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.VisualProperties;
+using System.Windows.Media;
+
 
 namespace StructureHelperLogics.Models.BeamShears
 {
@@ -9,10 +12,17 @@ namespace StructureHelperLogics.Models.BeamShears
         public string Name { get; set; } = string.Empty;
         public double StirrupDensity { get; set; }
         public double CompressedGap { get; set; }
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
+        public double StartCoordinate { get; set; } = 0;
+        public double EndCoordinate { get; set; } = 100;
 
         public StirrupByDensity(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualProperty(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/StructureHelperLogics/Models/BeamShears/StirrupByInclinedRebar.cs b/StructureHelperLogics/Models/BeamShears/StirrupByInclinedRebar.cs
index fab743c..fd82cd9 100644
--- a/StructureHelperLogics/Models/BeamShears/StirrupByInclinedRebar.cs
+++ b/StructureHelperLogics/Models/BeamShears/StirrupByInclinedRebar.cs
@@ -1,10 +1,12 @@
 using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.Materials;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Media;
 
 namespace StructureHelperLogics.Models.BeamShears
 {
@@ -64,10 +66,15 @@ namespace StructureHelperLogics.Models.BeamShears
         public IRebarSection RebarSection { get; set; } = new RebarSection(Guid.NewGuid());
         /// <inheritdoc>
         public double LegCount { get; set; } = 2;
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
 
         public StirrupByInclinedRebar(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualProperty(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/StructureHelperLogics/Models/BeamShears/StirrupByRebar.cs b/StructureHelperLogics/Models/BeamShears/StirrupByRebar.cs
index 1949012..eb96029 100644
--- a/StructureHelperLogics/Models/BeamShears/StirrupByRebar.cs
+++ b/StructureHelperLogics/Models/BeamShears/StirrupByRebar.cs
@@ -1,6 +1,8 @@
 using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.VisualProperties;
 using StructureHelperLogics.Models.Materials;
+using System.Windows.Media;
 
 namespace StructureHelperLogics.Models.BeamShears
 {
@@ -62,11 +64,18 @@ namespace StructureHelperLogics.Models.BeamShears
         public double CompressedGap { get; set; } = 0;
         /// <inheritdoc/>
         public bool IsSpiral { get; set; } = false;
+        public double StartCoordinate { get; set; } = 0;
+        public double EndCoordinate { get; set; } = 100;
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
 
         public StirrupByRebar(Guid id)
         {
             Id = id;
             Material = HeadMaterialFactory.GetHeadMaterial(HeadmaterialType.Reinforcement400).HelperMaterial as IReinforcementLibMaterial;
+            VisualProperty = new PrimitiveVisualProperty(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/StructureHelperLogics/Models/BeamShears/StirrupGroup.cs b/StructureHelperLogics/Models/BeamShears/StirrupGroup.cs
index 7dc8e5e..2cdd71f 100644
--- a/StructureHelperLogics/Models/BeamShears/StirrupGroup.cs
+++ b/StructureHelperLogics/Models/BeamShears/StirrupGroup.cs
@@ -1,9 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using StructureHelperCommon.Models.VisualProperties;
+using System.Windows.Media;
 
 namespace StructureHelperLogics.Models.BeamShears
 {
@@ -13,10 +9,15 @@ namespace StructureHelperLogics.Models.BeamShears
         public string Name { get; set; } = string.Empty;
         public List<IStirrup> Stirrups { get; } = new();
         public double CompressedGap { get; set; }
+        public IPrimitiveVisualProperty VisualProperty { get; set; }
 
         public StirrupGroup(Guid id)
         {
             Id = id;
+            VisualProperty = new PrimitiveVisualProperty(Guid.NewGuid())
+            {
+                Color = (Color)ColorConverter.ConvertFromString("Black")
+            };
         }
 
         public object Clone()
diff --git a/StructureHelperLogics/NdmCalculations/Primitives/IVisualProperty.cs b/StructureHelperLogics/NdmCalculations/Primitives/IVisualProperty.cs
index ae5f63b..014f886 100644
--- a/StructureHelperLogics/NdmCalculations/Primitives/IVisualProperty.cs
+++ b/StructureHelperLogics/NdmCalculations/Primitives/IVisualProperty.cs
@@ -1,31 +1,14 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using StructureHelperCommon.Models.VisualProperties;
 using System.Windows.Media;
 
 namespace StructureHelperLogics.NdmCalculations.Primitives
 {
-    public interface IVisualProperty : ISaveable
+    public interface IVisualProperty : IPrimitiveVisualProperty
     {
-        /// <summary>
-        /// Flag of visibility
-        /// </summary>
-        bool IsVisible { get; set; }
-        Color Color { get; set; }
         /// <summary>
         /// Flag of assigning of color from material or from primitive's settings
         /// </summary>
         bool SetMaterialColor { get; set; }
-        /// <summary>
-        /// Index by z-coordinate
-        /// </summary>
-        int ZIndex { get; set; }
-        /// <summary>
-        /// Opacity of filling
-        /// </summary>
-        double Opacity { get; set; }
     }
 }
diff --git a/StructureHelperLogics/NdmCalculations/Primitives/VisualProperty.cs b/StructureHelperLogics/NdmCalculations/Primitives/VisualProperty.cs
index 524bb96..a324144 100644
--- a/StructureHelperLogics/NdmCalculations/Primitives/VisualProperty.cs
+++ b/StructureHelperLogics/NdmCalculations/Primitives/VisualProperty.cs
@@ -41,5 +41,10 @@ namespace StructureHelperLogics.NdmCalculations.Primitives
         {
             
         }
+
+        public object Clone()
+        {
+            throw new NotImplementedException();
+        }
     }
 }