diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs
index b514987..ea03e2b 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/CrackDiagramLogic.cs
@@ -22,6 +22,8 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
     internal class CrackDiagramLogic : ILongProcessLogic
     {
         static readonly CrackForceCalculator calculator = new();
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
         private List<IForcesTupleResult> ValidTupleList { get; set; }
         ArrayParameter<double> arrayParameter;
         private IEnumerable<IForcesTupleResult> TupleList { get; set; }
@@ -102,7 +104,14 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews
                 calculator.EndTuple = validTupleList[i].DesignForceTuple.ForceTuple;
                 var limitState = validTupleList[i].DesignForceTuple.LimitState;
                 var calcTerm = validTupleList[i].DesignForceTuple.CalcTerm;
-                var ndms = NdmPrimitivesService.GetNdms(ndmPrimitives, limitState, calcTerm);
+                triangulateLogic = new TriangulatePrimitiveLogic()
+                {
+                    Primitives = ndmPrimitives,
+                    LimitState = limitState,
+                    CalcTerm = calcTerm,
+                    TraceLogger = TraceLogger
+                };
+                var ndms = triangulateLogic.GetNdms();
                 calculator.NdmCollection = ndms;
                 calculator.Run();
                 var result = (CrackForceResult)calculator.Result;
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackResultLogic.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackResultLogic.cs
index 04445c5..f03902b 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackResultLogic.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackResultLogic.cs
@@ -18,6 +18,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
     internal class ShowCrackResultLogic
     {
         private CrackForceCalculator calculator;
+        private ITriangulatePrimitiveLogic triangulateLogic;
 
         public static GeometryNames GeometryNames => ProgramSetting.GeometryNames;
         public LimitStates LimitState { get; set; }
@@ -42,7 +43,13 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             calculator.TraceLogger = new ShiftTraceLogger();
             calculator.StartTuple = startDesignTuple;
             calculator.EndTuple = finishDesignTuple;
-            calculator.NdmCollection = NdmPrimitivesService.GetNdms(ndmPrimitives, LimitState, CalcTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = ndmPrimitives,
+                LimitState = LimitState,
+                CalcTerm = CalcTerm
+            };
+            calculator.NdmCollection = triangulateLogic.GetNdms();
             calculator.Run();
             var result = (CrackForceResult)calculator.Result;
             if (result.IsValid)
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackWidthLogic.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackWidthLogic.cs
index 0a69aed..19c324a 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackWidthLogic.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/ShowCrackWidthLogic.cs
@@ -19,14 +19,14 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
 
         internal void Show()
         {
-            var inputData = new CrackWidthCalculatorInputData()
+            var inputData = new TupleCrackInputData()
             {
                 //LimitState = LimitState,
                 //CalcTerm = CalcTerm,
                 LongTermTuple = ForceTuple,
                 NdmPrimitives = ndmPrimitives
             };
-            var calculator = new CrackWidthCalculator() { InputData = inputData };
+            var calculator = new TupleCrackCalculator() { InputData = inputData };
             calculator.Run();
             var result = calculator.Result;
 
diff --git a/StructureHelper/Windows/MainWindow/CrossSectionModel.cs b/StructureHelper/Windows/MainWindow/CrossSectionModel.cs
index 95488a7..874a705 100644
--- a/StructureHelper/Windows/MainWindow/CrossSectionModel.cs
+++ b/StructureHelper/Windows/MainWindow/CrossSectionModel.cs
@@ -1,4 +1,5 @@
 using LoaderCalculator;
+using LoaderCalculator.Data.Materials.MaterialBuilders;
 using LoaderCalculator.Data.Matrix;
 using LoaderCalculator.Data.Ndms;
 using LoaderCalculator.Data.ResultData;
@@ -9,6 +10,7 @@ using StructureHelper.Services.Primitives;
 using StructureHelper.UnitSystem;
 using StructureHelper.UnitSystem.Systems;
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Models;
 using StructureHelperCommon.Services.Units;
 using StructureHelperLogics.Models.Calculations.CalculationProperties;
 using StructureHelperLogics.Models.CrossSections;
@@ -26,6 +28,8 @@ namespace StructureHelper.Windows.MainWindow
 {
     public class CrossSectionModel
     {
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
         public ICrossSection Section { get; private set; }
         private IPrimitiveRepository primitiveRepository;
         public IHeadMaterialRepository HeadMaterialRepository { get; }
@@ -52,7 +56,13 @@ namespace StructureHelper.Windows.MainWindow
         public IEnumerable<INdm> GetNdms(ICalculationProperty calculationProperty)
         {
             var ndmPrimitives = Section.SectionRepository.Primitives;
-            return NdmPrimitivesService.GetNdms(ndmPrimitives, calculationProperty.LimitState, calculationProperty.CalcTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = ndmPrimitives,
+                LimitState = calculationProperty.LimitState,
+                CalcTerm = calculationProperty.CalcTerm
+            };
+            return triangulateLogic.GetNdms();
             ////Настройки триангуляции, пока опции могут быть только такие
             //ITriangulationOptions options = new TriangulationOptions { LimiteState = calculationProperty.LimitState, CalcTerm = calculationProperty.CalcTerm };
 
diff --git a/StructureHelper/Windows/MainWindow/CrossSectionView.xaml b/StructureHelper/Windows/MainWindow/CrossSectionView.xaml
index 4d78355..ac8b107 100644
--- a/StructureHelper/Windows/MainWindow/CrossSectionView.xaml
+++ b/StructureHelper/Windows/MainWindow/CrossSectionView.xaml
@@ -201,7 +201,7 @@
                         <ContentControl ContentTemplate="{DynamicResource DiagramCalculator}"/>
                     </Viewbox>
                 </Button>
-                <Button Visibility="Hidden" Style="{DynamicResource ToolButton}" Command="{Binding Add}"  CommandParameter="{x:Static enums:CalculatorTypes.CrackCalculator}" ToolTip="Add Interaction Diagram Calculator">
+                <Button Style="{DynamicResource ToolButton}" Command="{Binding Add}"  CommandParameter="{x:Static enums:CalculatorTypes.CrackCalculator}" ToolTip="Add Crack Calculator">
                     <Viewbox>
                         <ContentControl ContentTemplate="{DynamicResource CrackCalculator}"/>
                     </Viewbox>
@@ -357,7 +357,7 @@
                                                 </Viewbox>
                                             </MenuItem.Icon>
                                         </MenuItem>
-                                        <MenuItem Visibility="Hidden" Header="Add Crack Calculator" Command="{Binding Add}" CommandParameter="{x:Static enums:CalculatorTypes.CrackCalculator}">
+                                        <MenuItem Header="Add Crack Calculator" Command="{Binding Add}" CommandParameter="{x:Static enums:CalculatorTypes.CrackCalculator}">
                                             <MenuItem.Icon>
                                                 <Viewbox Width="16" Height="16">
                                                     <ContentControl ContentTemplate="{DynamicResource CrackCalculator}"/>
diff --git a/StructureHelper/Windows/MainWindow/CrossSectionViewModel.cs b/StructureHelper/Windows/MainWindow/CrossSectionViewModel.cs
index 37c5e69..51a5d3b 100644
--- a/StructureHelper/Windows/MainWindow/CrossSectionViewModel.cs
+++ b/StructureHelper/Windows/MainWindow/CrossSectionViewModel.cs
@@ -29,6 +29,8 @@ namespace StructureHelper.Windows.MainWindow
     {
         private ICrossSection section;
         private ICrossSectionRepository repository => section.SectionRepository;
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
 
         public CrossSectionVisualPropertyVM VisualProperty { get; private set; }
 
@@ -172,7 +174,13 @@ namespace StructureHelper.Windows.MainWindow
             MovePrimitiveToGravityCenterCommand = new RelayCommand(o =>
             {
                 if (CheckMaterials() == false) { return;}
-                var ndms = NdmPrimitivesService.GetNdms(repository.Primitives, LimitStates.SLS, CalcTerms.ShortTerm);
+                triangulateLogic = new TriangulatePrimitiveLogic()
+                {
+                    Primitives = repository.Primitives,
+                    LimitState = LimitStates.SLS,
+                    CalcTerm = CalcTerms.ShortTerm
+                };
+                var ndms = triangulateLogic.GetNdms();
                 var center = GeometryOperations.GetGravityCenter(ndms);
                 foreach (var item in PrimitiveLogic.Items)
                 {
diff --git a/StructureHelper/Windows/ViewModels/NdmCrossSections/AnalysisViewModelLogic.cs b/StructureHelper/Windows/ViewModels/NdmCrossSections/AnalysisViewModelLogic.cs
index 5664f16..802d030 100644
--- a/StructureHelper/Windows/ViewModels/NdmCrossSections/AnalysisViewModelLogic.cs
+++ b/StructureHelper/Windows/ViewModels/NdmCrossSections/AnalysisViewModelLogic.cs
@@ -11,6 +11,7 @@ using StructureHelperCommon.Models.Calculators;
 using StructureHelperLogics.Models.CrossSections;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
 using StructureHelperLogics.NdmCalculations.Analyses.Logics;
+using StructureHelperLogics.NdmCalculations.Cracking;
 using System;
 using System.Windows;
 using System.Windows.Forms;
@@ -56,7 +57,13 @@ namespace StructureHelper.Windows.ViewModels.NdmCrossSections
 
         private void AddCrackCalculator()
         {
-            throw new NotImplementedException();
+            var inputData = new CrackInputData();
+            var calculator = new CrackCalculator(inputData)
+            {
+                Name = "New crack calculator",
+                TraceLogger = new ShiftTraceLogger(),
+            };
+            NewItem = calculator;
         }
 
         private void AddLimitCurveCalculator()
@@ -102,20 +109,15 @@ namespace StructureHelper.Windows.ViewModels.NdmCrossSections
 
         private void EditCalculator()
         {
-            if (SelectedItem is ForceCalculator)
-            {
-                var calculator = SelectedItem as ForceCalculator;
-                EditForceCalculator(calculator);
-            }
-            else if (SelectedItem is LimitCurvesCalculator)
-            {
-                var calculator = SelectedItem as LimitCurvesCalculator;
-                EditLimitCurveCalculator(calculator);
-            }
-            else
-            {
-                throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(SelectedItem));
-            }
+            if (SelectedItem is ForceCalculator forceCalculator) { EditForceCalculator(forceCalculator);}
+            else if (SelectedItem is LimitCurvesCalculator limitCurvesCalculator) { EditLimitCurveCalculator(limitCurvesCalculator);            }
+            else if (SelectedItem is CrackCalculator crackCalculator) { EditCrackCalculator(crackCalculator);}
+            else { throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(SelectedItem));}
+        }
+
+        private void EditCrackCalculator(CrackCalculator crackCalculator)
+        {
+            throw new NotImplementedException();
         }
 
         private void EditLimitCurveCalculator(LimitCurvesCalculator calculator)
@@ -193,6 +195,7 @@ namespace StructureHelper.Windows.ViewModels.NdmCrossSections
                     ProcessResult();
                 }
             }
+
             if (SelectedItem.TraceLogger is not null)
             {
                 var wnd = new TraceDocumentView(SelectedItem.TraceLogger.TraceLoggerEntries);
@@ -214,12 +217,15 @@ namespace StructureHelper.Windows.ViewModels.NdmCrossSections
 
         private void ProcessResult()
         {
-            if (SelectedItem is IForceCalculator)
+            if (SelectedItem is ForceCalculator forceCalculator)
             {
-                var calculator = SelectedItem as ForceCalculator;
-                var vm = new ForcesResultsViewModel(calculator);
+                var vm = new ForcesResultsViewModel(forceCalculator);
                 var wnd = new ForceResultsView(vm);
                 wnd.ShowDialog();
+            }
+            else if (SelectedItem is CrackCalculator crackCalculator)
+            {
+
             }
             else
             {
diff --git a/StructureHelperCommon/Infrastructures/Interfaces/IHasForceCombinations.cs b/StructureHelperCommon/Infrastructures/Interfaces/IHasForceCombinations.cs
index a9422bd..3fe260b 100644
--- a/StructureHelperCommon/Infrastructures/Interfaces/IHasForceCombinations.cs
+++ b/StructureHelperCommon/Infrastructures/Interfaces/IHasForceCombinations.cs
@@ -5,6 +5,9 @@ namespace StructureHelperCommon.Infrastructures.Interfaces
 {
     public interface IHasForceCombinations
     {
+        /// <summary>
+        /// Collection of force actions
+        /// </summary>
         List<IForceAction> ForceActions { get; }
     }
 }
diff --git a/StructureHelperCommon/Models/Loggers/LoggerStrings.cs b/StructureHelperCommon/Models/Loggers/LoggerStrings.cs
index 60f5776..1f6e3b0 100644
--- a/StructureHelperCommon/Models/Loggers/LoggerStrings.cs
+++ b/StructureHelperCommon/Models/Loggers/LoggerStrings.cs
@@ -10,6 +10,7 @@ namespace StructureHelperCommon.Models.Loggers
     {
         public static string DimensionLess => "(dimensionless)";
         public static string MethodBasedOn => "Method of calculation based on ";
+        public static string CalculationError => "Some errors happened during calculations: ";
         public static string CalculationHasDone => "Calculation has done succesfully";
         public static string Summary => "Summary";
         public static string Maximum => "Maximum";
diff --git a/StructureHelperLogics/Models/Templates/CrossSections/CalculatorLogic.cs b/StructureHelperLogics/Models/Templates/CrossSections/CalculatorLogic.cs
index c4823bd..01e25bb 100644
--- a/StructureHelperLogics/Models/Templates/CrossSections/CalculatorLogic.cs
+++ b/StructureHelperLogics/Models/Templates/CrossSections/CalculatorLogic.cs
@@ -1,6 +1,7 @@
 using StructureHelperCommon.Models;
 using StructureHelperCommon.Models.Calculators;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
+using StructureHelperLogics.NdmCalculations.Cracking;
 
 namespace StructureHelperLogics.Models.Templates.CrossSections
 {
@@ -8,14 +9,19 @@ namespace StructureHelperLogics.Models.Templates.CrossSections
     {
         public IEnumerable<ICalculator> GetNdmCalculators()
         {
-            var calculators = new List<ICalculator>
+            var calculators = new List<ICalculator>();
+            var forceCalculator = new ForceCalculator()
             {
-                new ForceCalculator()
-                {
-                    Name = "New Force Calculator",
-                    TraceLogger = new ShiftTraceLogger()
-                }
+                Name = "New Force Calculator",
+                TraceLogger = new ShiftTraceLogger()
             };
+            calculators.Add(forceCalculator);
+            var crackCalculator = new CrackCalculator(new CrackInputData())
+            {
+                Name = "New Crack Calculator",
+                TraceLogger = new ShiftTraceLogger()
+            };
+            calculators.Add(crackCalculator);
             return calculators;
         }
     }
diff --git a/StructureHelperLogics/Models/Templates/CrossSections/RCs/SectionTemplate.cs b/StructureHelperLogics/Models/Templates/CrossSections/RCs/SectionTemplate.cs
index dedcb13..7ce2603 100644
--- a/StructureHelperLogics/Models/Templates/CrossSections/RCs/SectionTemplate.cs
+++ b/StructureHelperLogics/Models/Templates/CrossSections/RCs/SectionTemplate.cs
@@ -4,6 +4,7 @@ using StructureHelperCommon.Models.Forces;
 using StructureHelperLogics.Models.CrossSections;
 using StructureHelperLogics.Models.Templates.RCs;
 using StructureHelperLogics.NdmCalculations.Analyses;
+using StructureHelperLogics.NdmCalculations.Cracking;
 using StructureHelperLogics.NdmCalculations.Primitives;
 using System;
 using System.Collections.Generic;
@@ -62,6 +63,10 @@ namespace StructureHelperLogics.Models.Templates.CrossSections.RCs
                     var forceCalculator = calculator as IHasForceCombinations;
                     forceCalculator.ForceActions.AddRange(combinations);
                 }
+                if (calculator is CrackCalculator crackCalculator)
+                {
+                    crackCalculator.InputData.ForceActions.AddRange(combinations);
+                }
             }
         }
         private void AddAllPrimitivesToCalculator()
@@ -73,6 +78,10 @@ namespace StructureHelperLogics.Models.Templates.CrossSections.RCs
                     var primitiveCalculator = calculator as IHasPrimitives;
                     primitiveCalculator.Primitives.AddRange(primitives);
                 }
+                if (calculator is CrackCalculator crackCalculator)
+                {
+                    crackCalculator.InputData.Primitives.AddRange(primitives);
+                }
             }
         }
     }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs
index 087863b..6d4803d 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs
@@ -1,6 +1,5 @@
 using LoaderCalculator.Data.Ndms;
 using StructureHelperCommon.Infrastructures.Enums;
-using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Models;
 using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
@@ -8,12 +7,10 @@ using StructureHelperCommon.Models.Loggers;
 using StructureHelperCommon.Models.Sections;
 using StructureHelperCommon.Models.Sections.Logics;
 using StructureHelperCommon.Models.Shapes;
-using StructureHelperCommon.Services.Forces;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces.Logics;
 using StructureHelperLogics.NdmCalculations.Buckling;
 using StructureHelperLogics.NdmCalculations.Primitives;
 using StructureHelperLogics.Services.NdmPrimitives;
-using System;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
@@ -24,6 +21,8 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
         private ForcesResults result;
         private IProcessorLogic<IForceTuple> eccentricityLogic;
         private ForceTupleBucklingLogic bucklingLogic;
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
 
         public string Name { get; set; }
         public List<LimitStates> LimitStatesList { get; private set; }
@@ -99,7 +98,14 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
             IForcesTupleResult tupleResult;
             LimitStates limitState = tuple.LimitState;
             CalcTerms calcTerm = tuple.CalcTerm;
-            var ndms = NdmPrimitivesService.GetNdms(Primitives, limitState, calcTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = Primitives,
+                LimitState = limitState,
+                CalcTerm = calcTerm,
+                TraceLogger = TraceLogger
+            };
+            var ndms = triangulateLogic.GetNdms();
             IPoint2D point2D;
             IProcessorLogic<IForceTuple> forcelogic = new ForceTupleCopier(tuple.ForceTuple);
             if (combination.SetInGravityCenter == true)
@@ -196,7 +202,11 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
             string result = "";
             try
             {
-                NdmPrimitivesService.CheckPrimitives(Primitives);
+                triangulateLogic = new TriangulatePrimitiveLogic()
+                {
+                    Primitives = Primitives
+                };
+                triangulateLogic.CheckPrimitives(Primitives);
             }
             catch (Exception ex)
             {
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurvesCalculator.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurvesCalculator.cs
index 83db6dc..65984d0 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurvesCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurvesCalculator.cs
@@ -15,6 +15,8 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
     {
         private LimitCurvesResult result;
         private int curvesIterationCount;
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
         private LimitCurvesCalculatorUpdateStrategy updateStrategy => new();
 
         public Guid Id { get; }
@@ -78,7 +80,14 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                 {
                     foreach (var calcTerm in InputData.CalcTerms)
                     {
-                        var ndms = NdmPrimitivesService.GetNdms(primitiveSeries.Collection, limitState, calcTerm);
+                        triangulateLogic = new TriangulatePrimitiveLogic()
+                        {
+                            Primitives = primitiveSeries.Collection,
+                            LimitState = limitState,
+                            CalcTerm = calcTerm,
+                            TraceLogger = TraceLogger
+                        };
+                        var ndms = triangulateLogic.GetNdms();
                         TraceLogger?.AddMessage($"Number of elementary parts N={ndms.Count()} were obtainded succesfully");
                         TraceLogger?.AddMessage($"Summary area of elementary parts Asum={ndms.Sum(x=>x.Area * x.StressScale)}", TraceLogStatuses.Debug);
                         foreach (var predicateEntry in InputData.PredicateEntries)
diff --git a/StructureHelperLogics/NdmCalculations/Buckling/ConcreteBucklingCalculator.cs b/StructureHelperLogics/NdmCalculations/Buckling/ConcreteBucklingCalculator.cs
index e9e1cc5..8f0a361 100644
--- a/StructureHelperLogics/NdmCalculations/Buckling/ConcreteBucklingCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Buckling/ConcreteBucklingCalculator.cs
@@ -2,6 +2,7 @@
 using LoaderCalculator.Data.Ndms;
 using LoaderCalculator.Logics;
 using LoaderCalculator.Logics.Geometry;
+using StructureHelperCommon.Infrastructures.Enums;
 using StructureHelperCommon.Models;
 using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
@@ -24,6 +25,7 @@ namespace StructureHelperLogics.NdmCalculations.Buckling
         private List<INdm> concreteNdms;
         private List<INdm> otherNdms;
         IForcesTupleResult forcesResults;
+        private ITriangulatePrimitiveLogic triangulateLogic;
 
         public string Name { get; set; }
 
@@ -52,7 +54,13 @@ namespace StructureHelperLogics.NdmCalculations.Buckling
             Accuracy = accuracy;
 
             var allPrimitives = options.Primitives;
-            ndmCollection = NdmPrimitivesService.GetNdms(allPrimitives, options.LimitState, options.CalcTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = allPrimitives,
+                LimitState = options.LimitState,
+                CalcTerm = options.CalcTerm
+            };
+            ndmCollection = triangulateLogic.GetNdms();
             concreteNdms = ndmCollection.Where(x => x.Material is ICrackMaterial).ToList();
             otherNdms = ndmCollection.Except(concreteNdms).ToList();
         }
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackCalculator.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackCalculator.cs
new file mode 100644
index 0000000..ff143c2
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackCalculator.cs
@@ -0,0 +1,93 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Infrastructures.Settings;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Forces;
+using StructureHelperCommon.Models.Loggers;
+using StructureHelperLogics.NdmCalculations.Primitives;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class CrackCalculator : ICalculator
+    {
+        const LimitStates limitState = LimitStates.SLS;
+        const CalcTerms longTerm = CalcTerms.LongTerm;
+        const CalcTerms shortTerm = CalcTerms.ShortTerm;
+
+        private CrackResult result;
+        private IGetTupleInputDatasLogic datasLogic;
+        private CrackCalculatorUpdateStrategy updateStrategy = new();
+
+        public string Name { get; set; }
+        public CrackInputData InputData { get; set; }
+        public IResult Result => result;
+
+        public IShiftTraceLogger? TraceLogger { get; set; }
+        public CrackCalculator(CrackInputData inputData)
+        {
+            InputData = inputData;
+        }
+
+        public object Clone()
+        {
+            var newItem = new CrackCalculator(new CrackInputData());
+            updateStrategy.Update(newItem, this);
+            return newItem;
+        }
+
+        public void Run()
+        {
+            PrepareNewResult();
+            TraceLogger?.AddMessage(LoggerStrings.CalculatorType(this), TraceLogStatuses.Service);
+            try
+            {
+                ProcessCalculations();
+                TraceLogger?.AddMessage(LoggerStrings.CalculationHasDone);
+            }
+            catch (Exception ex)
+            {
+                result.IsValid = false;
+                result.Description += ex;
+                TraceLogger?.AddMessage(LoggerStrings.CalculationError + ex, TraceLogStatuses.Error);
+            }
+        }
+
+        private void ProcessCalculations()
+        {
+            datasLogic = new GetTupleInputDatasLogic(InputData.Primitives, InputData.ForceActions)
+            {
+                LimitState = limitState,
+                LongTerm = longTerm,
+                ShortTerm = shortTerm,
+                TraceLogger = TraceLogger?.GetSimilarTraceLogger(50)
+            };
+            var datas = datasLogic.GetTupleInputDatas();
+            foreach (var data in datas)
+            {
+                var calculator = new TupleCrackCalculator()
+                {
+                    InputData = data,
+                    TraceLogger = TraceLogger?.GetSimilarTraceLogger(50)
+                };
+                calculator.Run();
+                var calcResult = calculator.Result as TupleCrackResult;
+                result.TupleResults.Add(calcResult);
+            }
+        }
+
+        private void PrepareNewResult()
+        {
+            result = new CrackResult
+            {
+                IsValid = true,
+                Description = string.Empty
+            };
+        }
+    }
+}
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackCalculatorUpdateStrategy.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackCalculatorUpdateStrategy.cs
new file mode 100644
index 0000000..f50346e
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackCalculatorUpdateStrategy.cs
@@ -0,0 +1,24 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Services;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class CrackCalculatorUpdateStrategy : IUpdateStrategy<CrackCalculator>
+    {
+        private CrackInputDataUpdateStrategy inputDataUpdateStrategy => new(); 
+        public void Update(CrackCalculator targetObject, CrackCalculator sourceObject)
+        {
+            if (ReferenceEquals(targetObject, sourceObject)) { return; }
+            CheckObject.CompareTypes(targetObject, sourceObject);
+
+            targetObject.Name = sourceObject.Name;
+            targetObject.InputData ??= new();
+            inputDataUpdateStrategy.Update(targetObject.InputData, sourceObject.InputData);
+        }
+    }
+}
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackInputData.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackInputData.cs
new file mode 100644
index 0000000..5283702
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackInputData.cs
@@ -0,0 +1,25 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Forces;
+using StructureHelperLogics.NdmCalculations.Primitives;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class CrackInputData : IInputData, IHasPrimitives, IHasForceCombinations
+    {
+        /// <inheritdoc/>
+        public List<INdmPrimitive> Primitives { get; private set; }
+        /// <inheritdoc/>
+        public List<IForceAction> ForceActions { get; private set; }
+        public CrackInputData()
+        {
+            Primitives = new();
+            ForceActions = new();
+        }
+    }
+}
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackInputDataUpdateStrategy.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackInputDataUpdateStrategy.cs
new file mode 100644
index 0000000..53af0f6
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackInputDataUpdateStrategy.cs
@@ -0,0 +1,23 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Services;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class CrackInputDataUpdateStrategy : IUpdateStrategy<CrackInputData>
+    {
+        public void Update(CrackInputData targetObject, CrackInputData sourceObject)
+        {
+            if (ReferenceEquals(targetObject, sourceObject)) { return; }
+            CheckObject.CompareTypes(targetObject, sourceObject);
+            targetObject.ForceActions.Clear();
+            targetObject.ForceActions.AddRange(sourceObject.ForceActions);
+            targetObject.Primitives.Clear();
+            targetObject.Primitives.AddRange(sourceObject.Primitives);
+        }
+    }
+}
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackResult.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackResult.cs
new file mode 100644
index 0000000..066d0ab
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackResult.cs
@@ -0,0 +1,20 @@
+using StructureHelperCommon.Models.Calculators;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class CrackResult : IResult
+    {
+        public bool IsValid { get; set; }
+        public string? Description { get; set; }
+        public List<TupleCrackResult> TupleResults {get;set;}
+        public CrackResult()
+        {
+            TupleResults = new();
+        }
+    }
+}
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/GetTupleInputDatasLogic.cs b/StructureHelperLogics/NdmCalculations/Cracking/GetTupleInputDatasLogic.cs
new file mode 100644
index 0000000..b49e534
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/GetTupleInputDatasLogic.cs
@@ -0,0 +1,101 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Forces;
+using StructureHelperCommon.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using StructureHelperCommon.Models.Loggers;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperLogics.NdmCalculations.Primitives;
+using StructureHelperCommon.Infrastructures.Interfaces;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class GetTupleInputDatasLogic : IGetTupleInputDatasLogic
+    {
+        public List<IForceAction> ForceActions { get; set; }
+        public List<INdmPrimitive> Primitives { get; set; }
+        public IShiftTraceLogger? TraceLogger { get; set; }
+        public LimitStates LimitState { get; set; }
+        public CalcTerms LongTerm { get; set; }
+        public CalcTerms ShortTerm { get; set; }
+
+        public GetTupleInputDatasLogic(List<INdmPrimitive> primitives, List<IForceAction> forceActions)
+        {
+            Primitives = primitives;
+            ForceActions = forceActions;
+        }
+
+        public List<TupleCrackInputData> GetTupleInputDatas()
+        {
+            TraceLogger?.AddMessage(LoggerStrings.CalculatorType(this), TraceLogStatuses.Service);
+
+            List<TupleCrackInputData> resultList = new();
+            CheckInputData();
+            foreach (var action in ForceActions)
+            {
+                var tuple = GetTuplesByActions(action);
+                if (tuple.isValid == false)
+                {
+                    resultList.Add(new TupleCrackInputData()
+                    {
+                        IsValid = false,
+                    });
+                }
+                else
+                {
+                    resultList.Add(new TupleCrackInputData()
+                    {
+                        IsValid = true,
+                        LongTermTuple = tuple.LongTuple,
+                        ShortTermTuple = tuple.ShortTuple,
+                        NdmPrimitives = Primitives
+                    });
+                }
+            }
+            TraceLogger?.AddMessage(LoggerStrings.CalculationHasDone);
+            return resultList;
+        }
+
+        private void CheckInputData()
+        {
+            if (ForceActions is null)
+            {
+                TraceLogger?.AddMessage("Force action is null", TraceLogStatuses.Error);
+                throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": {nameof(ForceActions)} is null");
+            }
+        }
+
+        private (bool isValid, IForceTuple? LongTuple, IForceTuple? ShortTuple) GetTuplesByActions(IForceAction action)
+        {
+            IForceTuple longTuple, shortTuple;
+            var combinations = action.GetCombinations().DesignForces;
+            try
+            {
+                longTuple = GetTupleByCombination(combinations, LimitState, LongTerm);
+                TraceLogger?.AddMessage("Long term force combination");
+                TraceLogger?.AddEntry(new TraceTablesFactory().GetByForceTuple(longTuple));
+                shortTuple = GetTupleByCombination(combinations, LimitState, ShortTerm);
+                TraceLogger?.AddMessage("Short term force combination");
+                TraceLogger?.AddEntry(new TraceTablesFactory().GetByForceTuple(longTuple));
+            }
+            catch (Exception ex)
+            {
+                TraceLogger?.AddMessage("Force combination is not obtained: \n" + ex, TraceLogStatuses.Error);
+                return (false, null, null);
+            }
+            return (true, longTuple, shortTuple);
+        }
+
+        private static IForceTuple GetTupleByCombination(List<IDesignForceTuple> combinations, LimitStates limitState, CalcTerms calcTerm)
+        {
+            return combinations
+                .Where(x => x.LimitState == limitState & x.CalcTerm == calcTerm)
+                .Single()
+                .ForceTuple;
+        }
+    }
+}
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/IGetTupleInputDatasLogic.cs b/StructureHelperLogics/NdmCalculations/Cracking/IGetTupleInputDatasLogic.cs
new file mode 100644
index 0000000..dd2dec1
--- /dev/null
+++ b/StructureHelperLogics/NdmCalculations/Cracking/IGetTupleInputDatasLogic.cs
@@ -0,0 +1,15 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Forces;
+using StructureHelperLogics.NdmCalculations.Primitives;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public interface IGetTupleInputDatasLogic : ILogic, IHasPrimitives, IHasForceCombinations
+    {
+        LimitStates LimitState { get; set; }
+        CalcTerms LongTerm { get; set; }
+        CalcTerms ShortTerm { get; set; }
+        List<TupleCrackInputData> GetTupleInputDatas();
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculator.cs b/StructureHelperLogics/NdmCalculations/Cracking/RebarCrackCalculator.cs
similarity index 93%
rename from StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculator.cs
rename to StructureHelperLogics/NdmCalculations/Cracking/RebarCrackCalculator.cs
index e0bebd2..4e2f643 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/RebarCrackCalculator.cs
@@ -3,10 +3,10 @@ using StructureHelperCommon.Models.Calculators;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
-    public class CrackWidthSimpleCalculator : ICalculator
+    public class RebarCrackCalculator : ICalculator
     {
         ICrackWidthLogic crackWidthLogic = new CrackWidthLogicSP63();
-        CrackWidthSimpleCalculatorResult result;
+        RebarCrackResult result;
         public string Name { get; set; }
         public ICrackWidthSimpleCalculatorInputData InputData { get; set; }
         public IResult Result => result;
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculatorInputData.cs b/StructureHelperLogics/NdmCalculations/Cracking/RebarCrackInputData.cs
similarity index 87%
rename from StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculatorInputData.cs
rename to StructureHelperLogics/NdmCalculations/Cracking/RebarCrackInputData.cs
index b759327..578f163 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculatorInputData.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/RebarCrackInputData.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
-    public class CrackWidthSimpleCalculatorInputData : ICrackWidthSimpleCalculatorInputData
+    public class RebarCrackInputData : ICrackWidthSimpleCalculatorInputData
     {
         public CalcTerms CalcTerm { get; set; }
         public StrainTuple StrainTuple { get; set; }
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculatorResult.cs b/StructureHelperLogics/NdmCalculations/Cracking/RebarCrackResult.cs
similarity index 90%
rename from StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculatorResult.cs
rename to StructureHelperLogics/NdmCalculations/Cracking/RebarCrackResult.cs
index 32e287c..42180bf 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthSimpleCalculatorResult.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/RebarCrackResult.cs
@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
-    public class CrackWidthSimpleCalculatorResult : IResult
+    public class RebarCrackResult : IResult
     {
         public bool IsValid { get; set; }
         public string Description { get; set; }
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs b/StructureHelperLogics/NdmCalculations/Cracking/TupleCrackCalculator.cs
similarity index 68%
rename from StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs
rename to StructureHelperLogics/NdmCalculations/Cracking/TupleCrackCalculator.cs
index 88c702c..43ecc4f 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/TupleCrackCalculator.cs
@@ -4,6 +4,7 @@ using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Models;
 using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
+using StructureHelperCommon.Models.Loggers;
 using StructureHelperCommon.Services.Forces;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
 using StructureHelperLogics.NdmCalculations.Primitives;
@@ -11,37 +12,54 @@ using StructureHelperLogics.Services.NdmPrimitives;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
-    public class CrackWidthCalculator : ICalculator
+    public class TupleCrackCalculator : ICalculator
     {
         private static readonly ILengthBetweenCracksLogic lengthLogic = new LengthBetweenCracksLogicSP63();
-        private CrackWidthCalculatorResult result;
+        private TupleCrackResult result;
         private IEnumerable<INdmPrimitive> ndmPrimitives;
         private List<RebarPrimitive>? rebarPrimitives;
-        private IEnumerable<INdm> ndmCollection;
+        private IEnumerable<INdm> defaultNdm;
+        private IEnumerable<INdm> fulyCrackedNdm;
         private CrackForceResult crackForceResult;
         private StrainTuple strainTuple;
+        private ITriangulatePrimitiveLogic triangulateLogic;
 
         public string Name { get; set; }
-        public CrackWidthCalculatorInputData InputData { get; set; }
+        public TupleCrackInputData InputData { get; set; }
         public IResult Result => result;
 
         public IShiftTraceLogger? TraceLogger { get; set; }
 
         public void Run()
         {
-            result = new() { IsValid = true, Description = ""};
+            PrepareNewResult();
+            TraceLogger?.AddMessage(LoggerStrings.CalculatorType(this), TraceLogStatuses.Service);
+
             try
             {
                 ProcessCalculations();
+                TraceLogger?.AddMessage(LoggerStrings.CalculationHasDone);
+
             }
             catch (Exception ex)
             {
                 result.IsValid = false;
                 result.Description += ex;
+                TraceLogger?.AddMessage(LoggerStrings.CalculationError + ex, TraceLogStatuses.Error);
+
             }
 
         }
 
+        private void PrepareNewResult()
+        {
+            result = new()
+            {
+                IsValid = true,
+                Description = string.Empty
+            };
+        }
+
         private void ProcessCalculations()
         {
             CheckInputData();
@@ -49,12 +67,16 @@ namespace StructureHelperLogics.NdmCalculations.Cracking
             CalcStrainMatrix();
             CalcCrackForce();
             var crackInputData = GetCrackInputData();
-            var calculator = new CrackWidthSimpleCalculator { InputData = crackInputData };
+            var calculator = new RebarCrackCalculator
+            {
+                InputData = crackInputData,
+                TraceLogger = TraceLogger?.GetSimilarTraceLogger(50)
+            };
             foreach (var item in rebarPrimitives)
             {
                 crackInputData.RebarPrimitive = item;
                 calculator.Run();
-                var rebarResult = calculator.Result as CrackWidthSimpleCalculatorResult;
+                var rebarResult = calculator.Result as RebarCrackResult;
                 //if (crackForceResult.IsSectionCracked == false)
                 //{
                 //    rebarResult.CrackWidth = 0d;
@@ -65,19 +87,19 @@ namespace StructureHelperLogics.NdmCalculations.Cracking
 
         private void CalcStrainMatrix()
         {
-            IForceTupleInputData inputData = new ForceTupleInputData() { NdmCollection = ndmCollection, Tuple = InputData.LongTermTuple};
+            IForceTupleInputData inputData = new ForceTupleInputData() { NdmCollection = defaultNdm, Tuple = InputData.LongTermTuple};
             IForceTupleCalculator calculator = new ForceTupleCalculator() { InputData = inputData };
             calculator.Run();
             var forceResult = calculator.Result as IForcesTupleResult;
             strainTuple = TupleConverter.ConvertToStrainTuple(forceResult.LoaderResults.StrainMatrix);
         }
 
-        private CrackWidthSimpleCalculatorInputData GetCrackInputData()
+        private RebarCrackInputData GetCrackInputData()
         {
-            lengthLogic.NdmCollection = ndmCollection;
+            lengthLogic.NdmCollection = defaultNdm;
             lengthLogic.StrainMatrix = TupleConverter.ConvertToLoaderStrainMatrix(strainTuple);
             var length = lengthLogic.GetLength();
-            var crackInputData = new CrackWidthSimpleCalculatorInputData
+            var crackInputData = new RebarCrackInputData
             {
                 PsiSFactor = crackForceResult.PsiS,
                 Length = length,
@@ -97,14 +119,21 @@ namespace StructureHelperLogics.NdmCalculations.Cracking
                     rebarPrimitives.Add(item as RebarPrimitive);
                 }
             }
-            ndmCollection = NdmPrimitivesService.GetNdms(ndmPrimitives, LimitStates.SLS, CalcTerms.ShortTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = ndmPrimitives,
+                LimitState = LimitStates.SLS,
+                CalcTerm = CalcTerms.ShortTerm,
+                TraceLogger = TraceLogger?.GetSimilarTraceLogger(50)
+        };
+            defaultNdm = triangulateLogic.GetNdms();
         }
 
         private void CalcCrackForce()
         {
             var calculator = new CrackForceCalculator();
             calculator.EndTuple = InputData.LongTermTuple;
-            calculator.NdmCollection = ndmCollection;
+            calculator.NdmCollection = defaultNdm;
             calculator.Run();
             crackForceResult = calculator.Result as CrackForceResult;
         }
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculatorInputData.cs b/StructureHelperLogics/NdmCalculations/Cracking/TupleCrackInputData.cs
similarity index 59%
rename from StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculatorInputData.cs
rename to StructureHelperLogics/NdmCalculations/Cracking/TupleCrackInputData.cs
index bf0b0a9..427618a 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculatorInputData.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/TupleCrackInputData.cs
@@ -10,10 +10,11 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
-    public class CrackWidthCalculatorInputData : IInputData
+    public class TupleCrackInputData : IInputData
     {
-        public IForceTuple LongTermTuple { get; set; }
-        public IForceTuple ShortTermTuple { get; set; }
-        public List<INdmPrimitive> NdmPrimitives {get;set;}
+        public bool IsValid { get; set; }
+        public IForceTuple? LongTermTuple { get; set; }
+        public IForceTuple? ShortTermTuple { get; set; }
+        public List<INdmPrimitive>? NdmPrimitives {get;set;}
     }
 }
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculatorResult.cs b/StructureHelperLogics/NdmCalculations/Cracking/TupleCrackResult.cs
similarity index 75%
rename from StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculatorResult.cs
rename to StructureHelperLogics/NdmCalculations/Cracking/TupleCrackResult.cs
index b1503a0..5281ac7 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculatorResult.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/TupleCrackResult.cs
@@ -8,20 +8,20 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
-    public class CrackWidthCalculatorResult : IResult
+    public class TupleCrackResult : IResult
     {
         public bool IsValid { get; set; }
         public string Description { get; set; }
         public IForceTuple LongTermTuple { get; set; }
         public IForceTuple ShortTermTuple { get; set; }
         public bool IsCracked { get; set; }
-        public List<CrackWidthSimpleCalculatorResult>  RebarResults { get; set; }
+        public List<RebarCrackResult>  RebarResults { get; set; }
         public double MaxLongTermCrackWidth => IsCracked? RebarResults.Select(x => x.LongTermResult.CrackWidth).Max() : 0d;
         public double MaxShortTermCrackWidth => IsCracked? RebarResults.Select(x => x.ShortTermResult.CrackWidth).Max() : 0d;
 
-        public CrackWidthCalculatorResult()
+        public TupleCrackResult()
         {
-            RebarResults = new List<CrackWidthSimpleCalculatorResult>();
+            RebarResults = new ();
         }
     }
 }
diff --git a/StructureHelperLogics/NdmCalculations/Primitives/IHasPrimitives.cs b/StructureHelperLogics/NdmCalculations/Primitives/IHasPrimitives.cs
index 522f5fe..c88cd7c 100644
--- a/StructureHelperLogics/NdmCalculations/Primitives/IHasPrimitives.cs
+++ b/StructureHelperLogics/NdmCalculations/Primitives/IHasPrimitives.cs
@@ -4,6 +4,9 @@ namespace StructureHelperLogics.NdmCalculations.Primitives
 {
     public interface IHasPrimitives
     {
+        /// <summary>
+        /// Collection of NdmPrimitives
+        /// </summary>
         List<INdmPrimitive> Primitives { get; }
     }
 }
diff --git a/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs b/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs
index 481de12..2d75e1e 100644
--- a/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs
+++ b/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs
@@ -21,11 +21,18 @@ namespace StructureHelperLogics.Services.NdmCalculations
     public class CalculationService
     {
         private ICalculationProperty calculationProperty;
+        private ITriangulatePrimitiveLogic triangulateLogic;
 
         public IStrainMatrix GetPrimitiveStrainMatrix(INdmPrimitive[] ndmPrimitives, double mx, double my, double nz)
         {
             var ndmCollection = new List<INdm>();
-            ndmCollection.AddRange(NdmPrimitivesService.GetNdms(ndmPrimitives, calculationProperty.LimitState, calculationProperty.CalcTerm));
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = ndmPrimitives,
+                LimitState = calculationProperty.LimitState,
+                CalcTerm = calculationProperty.CalcTerm
+            };
+            ndmCollection.AddRange(triangulateLogic.GetNdms());
             var loaderData = new LoaderOptions
             {
                 Preconditions = new Preconditions
diff --git a/StructureHelperLogics/Services/NdmPrimitives/ITriangulatePrimitiveLogic.cs b/StructureHelperLogics/Services/NdmPrimitives/ITriangulatePrimitiveLogic.cs
new file mode 100644
index 0000000..43c6ecd
--- /dev/null
+++ b/StructureHelperLogics/Services/NdmPrimitives/ITriangulatePrimitiveLogic.cs
@@ -0,0 +1,16 @@
+using LoaderCalculator.Data.Ndms;
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperLogics.NdmCalculations.Primitives;
+
+namespace StructureHelperLogics.Services.NdmPrimitives
+{
+    public interface ITriangulatePrimitiveLogic : ILogic
+    {
+        IEnumerable<INdmPrimitive> Primitives { get; set; }
+        LimitStates LimitState { get; set; }
+        CalcTerms CalcTerm { get; set; }
+        List<INdm> GetNdms();
+        bool CheckPrimitives(IEnumerable<INdmPrimitive> primitives);
+    }
+}
\ No newline at end of file
diff --git a/StructureHelperLogics/Services/NdmPrimitives/NdmPrimitivesService.cs b/StructureHelperLogics/Services/NdmPrimitives/NdmPrimitivesService.cs
deleted file mode 100644
index 709bdee..0000000
--- a/StructureHelperLogics/Services/NdmPrimitives/NdmPrimitivesService.cs
+++ /dev/null
@@ -1,56 +0,0 @@
-using LoaderCalculator.Data.Ndms;
-using StructureHelperCommon.Infrastructures.Enums;
-using StructureHelperCommon.Infrastructures.Exceptions;
-using StructureHelperCommon.Models.Shapes;
-using StructureHelperLogics.NdmCalculations.Primitives;
-using StructureHelperLogics.NdmCalculations.Triangulations;
-
-namespace StructureHelperLogics.Services.NdmPrimitives
-{
-    public static class NdmPrimitivesService
-    {
-        public static List<INdm> GetNdms(IEnumerable<INdmPrimitive> primitives, LimitStates limitState, CalcTerms calcTerm)
-        {
-            var orderedNdmPrimitives = primitives.OrderBy(x => x.VisualProperty.ZIndex);
-            var ndms = new List<INdm>();
-            var triangulationOptions = new TriangulationOptions() { LimiteState = limitState, CalcTerm = calcTerm };
-            foreach (var item in orderedNdmPrimitives)
-            {
-                if (item is IHasDivisionSize)
-                {
-                    var hasDivision = item as IHasDivisionSize;
-                    if (hasDivision.ClearUnderlying == true)
-                    {
-                        ndms.RemoveAll(x => hasDivision.IsPointInside(new Point2D() { X = x.CenterX, Y = x.CenterY }) == true);
-                    }
-                }
-                if (item.Triangulate == true)
-                {
-                    ndms.AddRange(item.GetNdms(triangulationOptions));
-                }
-            }
-            return ndms;
-        }
-
-        public static bool CheckPrimitives(IEnumerable<INdmPrimitive> primitives)
-        {
-            if (!primitives.Any())
-            {
-                throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": Count of primitive must be greater than zero");
-            }
-            if (!primitives.Any(x => x.Triangulate == true))
-            {
-                throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": There are not primitives to triangulate");
-            }
-            foreach (var item in primitives)
-            {
-                if (item.Triangulate == true &
-                    item.HeadMaterial is null)
-                {
-                    throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": Primitive: {item.Name} can't be triangulated since material is null");
-                }
-            } 
-            return true;
-        }
-    }
-}
diff --git a/StructureHelperLogics/Services/NdmPrimitives/TriangulatePrimitiveLogic.cs b/StructureHelperLogics/Services/NdmPrimitives/TriangulatePrimitiveLogic.cs
new file mode 100644
index 0000000..be98af4
--- /dev/null
+++ b/StructureHelperLogics/Services/NdmPrimitives/TriangulatePrimitiveLogic.cs
@@ -0,0 +1,105 @@
+using LoaderCalculator.Data.Ndms;
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Models;
+using StructureHelperCommon.Models.Shapes;
+using StructureHelperLogics.NdmCalculations.Primitives;
+using StructureHelperLogics.NdmCalculations.Triangulations;
+
+namespace StructureHelperLogics.Services.NdmPrimitives
+{
+    public class TriangulatePrimitiveLogic : ITriangulatePrimitiveLogic
+    {
+        private List<INdm> ndmCollection;
+
+        public IEnumerable<INdmPrimitive> Primitives { get; set; }
+        public LimitStates LimitState { get; set; }
+        public CalcTerms CalcTerm { get; set; }
+        public bool ConsiderCracking { get; set; }
+        public IShiftTraceLogger? TraceLogger { get; set; }
+        public TriangulatePrimitiveLogic()
+        {
+            ConsiderCracking = false;
+        }
+        public List<INdm> GetNdms()
+        {
+            TraceLogger?.AddMessage($"Total count of primitives n = {Primitives.Count()}", TraceLogStatuses.Service);
+            TraceLogger?.AddMessage($"Limit state is {LimitState}", TraceLogStatuses.Service);
+            TraceLogger?.AddMessage($"Calc term  is {CalcTerm}", TraceLogStatuses.Service);
+            var orderedNdmPrimitives = Primitives.OrderBy(x => x.VisualProperty.ZIndex);
+            ndmCollection = new List<INdm>();
+            foreach (var item in orderedNdmPrimitives)
+            {
+                TraceLogger?.AddMessage($"Triangulation of primitive {item.Name} has started", TraceLogStatuses.Service);
+                ProcessHasDivision(item);
+                TriangulatePrimitive(item);
+            }
+            if (TraceLogger is not null)
+            {
+                TraceService.TraceNdmCollection(TraceLogger, ndmCollection);
+            }
+            return ndmCollection;
+        }
+
+        private void TriangulatePrimitive(INdmPrimitive item)
+        {
+            if (item.Triangulate == true)
+            {
+                var triangulationOptions = new TriangulationOptions()
+                {
+                    LimiteState = LimitState,
+                    CalcTerm = CalcTerm
+                };
+                var itemNdms = item.GetNdms(triangulationOptions);
+                ndmCollection.AddRange(itemNdms);
+                TraceLogger?.AddMessage($"Triangulation of primitive {item.Name} was finished, {itemNdms.Count()} part(s) were obtained", TraceLogStatuses.Service);
+            }
+            else
+            {
+                TraceLogger?.AddMessage($"Triangulation of primitive was skiped cause its settings", TraceLogStatuses.Service);
+            }
+        }
+
+        private void ProcessHasDivision(INdmPrimitive? item)
+        {
+            if (item is IHasDivisionSize hasDivision)
+            {
+                if (hasDivision.ClearUnderlying == true)
+                {
+                    TraceLogger?.AddMessage("Removing of background part has started", TraceLogStatuses.Service);
+                    ndmCollection
+                        .RemoveAll(x =>
+                        hasDivision
+                            .IsPointInside(new Point2D() { X = x.CenterX, Y = x.CenterY }) == true);
+                }
+            }
+        }
+
+        public bool CheckPrimitives(IEnumerable<INdmPrimitive> primitives)
+        {
+            if (!primitives.Any())
+            {
+                string errorMessage = string.Intern(ErrorStrings.DataIsInCorrect + $": Count of primitive must be greater than zero");
+                TraceLogger?.AddMessage(errorMessage, TraceLogStatuses.Error);
+                throw new StructureHelperException(errorMessage);
+            }
+            if (!primitives.Any(x => x.Triangulate == true))
+            {
+                string errorMessage = string.Intern(ErrorStrings.DataIsInCorrect + $": There are not primitives to triangulate");
+                TraceLogger?.AddMessage(errorMessage, TraceLogStatuses.Error);
+                throw new StructureHelperException(errorMessage);
+            }
+            foreach (var item in primitives)
+            {
+                if (item.Triangulate == true &
+                    item.HeadMaterial is null)
+                {
+                    string errorMessage = string.Intern(ErrorStrings.DataIsInCorrect + $": Primitive: {item.Name} can't be triangulated since material is null");
+                    TraceLogger?.AddMessage(errorMessage, TraceLogStatuses.Error);
+                    throw new StructureHelperException(errorMessage);
+                }
+            }
+            return true;
+        }
+    }
+}
diff --git a/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs b/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs
index 41ba585..393cde9 100644
--- a/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs
+++ b/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs
@@ -18,6 +18,8 @@ namespace StructureHelperTests.FunctionalTests.Ndms.Calculators.CrackCalculatorT
 {
     internal class CrackCalculatorTest
     {
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
         [TestCase(0.4d, 0.6d, 0.012d, 0.025d, 2, 2, 0.81d)]
         public void Run_ShouldPass(double width, double height, double topDiametr, double bottomDiametr, int widthCount, int heightCount, double expectedFactor)
         {
@@ -25,7 +27,13 @@ namespace StructureHelperTests.FunctionalTests.Ndms.Calculators.CrackCalculatorT
             var template = new RectangleBeamTemplate(width, height) { TopDiameter = topDiametr, BottomDiameter = bottomDiametr, WidthCount = widthCount, HeightCount = heightCount };
             var newSection = new SectionTemplate(new RectGeometryLogic(template)).GetCrossSection();
             var ndmPrimitives = newSection.SectionRepository.Primitives;
-            var ndms = NdmPrimitivesService.GetNdms(ndmPrimitives, LimitStates.SLS, CalcTerms.ShortTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = ndmPrimitives,
+                LimitState = LimitStates.SLS,
+                CalcTerm = CalcTerms.ShortTerm
+            };
+            var ndms = triangulateLogic.GetNdms();
             var calculator = new CrackForceCalculator();
             calculator.EndTuple = new ForceTuple() { Mx = -50e3d, My = -50e3d, Nz = 0d };
             calculator.NdmCollection = ndms;
diff --git a/StructureHelperTests/UnitTests/Ndms/Triangulations/RectangleTriangulationTest.cs b/StructureHelperTests/UnitTests/Ndms/Triangulations/RectangleTriangulationTest.cs
index e9e5ff4..fd12e6c 100644
--- a/StructureHelperTests/UnitTests/Ndms/Triangulations/RectangleTriangulationTest.cs
+++ b/StructureHelperTests/UnitTests/Ndms/Triangulations/RectangleTriangulationTest.cs
@@ -17,6 +17,8 @@ namespace StructureHelperTests.UnitTests.Ndms.Triangulations
     public class RectangleTriangulationTest
     {
         private Mock<IHeadMaterial> materialMock;
+        private ITriangulatePrimitiveLogic triangulateLogic;
+
         [SetUp]
         public void Setup()
         {
@@ -75,7 +77,13 @@ namespace StructureHelperTests.UnitTests.Ndms.Triangulations
             opening.VisualProperty.ZIndex = 1;
             var primitives = new List<INdmPrimitive>() { mainBlock, opening };
             //Act
-            var ndms = NdmPrimitivesService.GetNdms(primitives, LimitStates.ULS, CalcTerms.ShortTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = primitives,
+                LimitState = LimitStates.ULS,
+                CalcTerm = CalcTerms.ShortTerm
+            };
+            var ndms = triangulateLogic.GetNdms();
             //Assert
             var area = ndms.Sum(x => x.Area);
             var moments = GeometryOperations.GetReducedMomentsOfInertia(ndms);
@@ -106,7 +114,13 @@ namespace StructureHelperTests.UnitTests.Ndms.Triangulations
             opening.VisualProperty.ZIndex = 1;
             var primitives = new List<INdmPrimitive>() { mainBlock, opening };
             //Act
-            var ndms = NdmPrimitivesService.GetNdms(primitives, LimitStates.ULS, CalcTerms.ShortTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = primitives,
+                LimitState = LimitStates.ULS,
+                CalcTerm = CalcTerms.ShortTerm
+            };
+            var ndms = triangulateLogic.GetNdms();
             //Assert
             var area = ndms.Sum(x => x.Area);
             var moments = GeometryOperations.GetReducedMomentsOfInertia(ndms);
@@ -138,7 +152,13 @@ namespace StructureHelperTests.UnitTests.Ndms.Triangulations
             opening.VisualProperty.ZIndex = 1;
             var primitives = new List<INdmPrimitive>() { mainBlock, opening };
             //Act
-            var ndms = NdmPrimitivesService.GetNdms(primitives, LimitStates.ULS, CalcTerms.ShortTerm);
+            triangulateLogic = new TriangulatePrimitiveLogic()
+            {
+                Primitives = primitives,
+                LimitState = LimitStates.ULS,
+                CalcTerm = CalcTerms.ShortTerm
+            };
+            var ndms = triangulateLogic.GetNdms();
             //Assert
             var area = ndms.Sum(x => x.Area);
             var moments = GeometryOperations.GetReducedMomentsOfInertia(ndms);