diff --git a/StructureHelper/Infrastructure/UI/Resources/GraphsTemplates.xaml b/StructureHelper/Infrastructure/UI/Resources/GraphsTemplates.xaml
index 722d7de..de9dadd 100644
--- a/StructureHelper/Infrastructure/UI/Resources/GraphsTemplates.xaml
+++ b/StructureHelper/Infrastructure/UI/Resources/GraphsTemplates.xaml
@@ -13,6 +13,11 @@
                     <Slider x:Name="StrokeSlider" Width="195" Minimum="0" Maximum="{Binding MaxStrokeSize}" Value="{Binding StrokeSize}"/>
                     <TextBox Width="40" Text="{Binding StrokeSize,Converter={StaticResource PlainDouble}, ValidatesOnDataErrors=True}"/>
                 </StackPanel>
+                <TextBlock Text="Filling opacity" Margin="0,5,0,5"/>
+                <StackPanel Orientation="Horizontal">
+                    <Slider x:Name="OpacitySlider" Width="195" Minimum="0" Maximum="1" Value="{Binding Opacity}"/>
+                    <TextBox Width="40" Text="{Binding Opacity,Converter={StaticResource PlainDouble}, ValidatesOnDataErrors=True}"/>
+                </StackPanel>
             </StackPanel>
         </GroupBox>
     </DataTemplate>
diff --git a/StructureHelper/StructureHelper.csproj.user b/StructureHelper/StructureHelper.csproj.user
index 6687d82..b51796c 100644
--- a/StructureHelper/StructureHelper.csproj.user
+++ b/StructureHelper/StructureHelper.csproj.user
@@ -12,6 +12,9 @@
     <Compile Update="Windows\Arrays\ArrayView.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Update="Windows\CalculationWindows\CalculatorsViews\ForceCalculatorViews\ForceResultLogic\SurroundDataView.xaml.cs">
+      <SubType>Code</SubType>
+    </Compile>
     <Compile Update="Windows\CalculationWindows\CalculatorsViews\GeometryCalculatorViews\GeometryCalculatorResultView.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
@@ -39,7 +42,7 @@
     <Compile Update="Windows\PrimitiveTemplates\RCs\Beams\CircleView.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
-    <Compile Update="Windows\UserControls\MultiplyTuple.xaml.cs">
+    <Compile Update="Windows\UserControls\MultiplyDouble.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
   </ItemGroup>
@@ -59,6 +62,9 @@
     <Page Update="Windows\Arrays\ArrayView.xaml">
       <SubType>Designer</SubType>
     </Page>
+    <Page Update="Windows\CalculationWindows\CalculatorsViews\ForceCalculatorViews\ForceResultLogic\SurroundDataView.xaml">
+      <SubType>Designer</SubType>
+    </Page>
     <Page Update="Windows\CalculationWindows\CalculatorsViews\GeometryCalculatorViews\GeometryCalculatorResultView.xaml">
       <SubType>Designer</SubType>
     </Page>
@@ -86,7 +92,7 @@
     <Page Update="Windows\PrimitiveTemplates\RCs\Beams\CircleView.xaml">
       <SubType>Designer</SubType>
     </Page>
-    <Page Update="Windows\UserControls\MultiplyTuple.xaml">
+    <Page Update="Windows\UserControls\MultiplyDouble.xaml">
       <SubType>Designer</SubType>
     </Page>
   </ItemGroup>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs
index d54bea5..195ad2a 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/InteractionDiagramLogic.cs
@@ -2,8 +2,10 @@
 using StructureHelper.Windows.Graphs;
 using StructureHelper.Windows.ViewModels.Errors;
 using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Infrastructures.Settings;
+using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
 using StructureHelperCommon.Models.Parameters;
 using StructureHelperCommon.Models.Shapes;
@@ -18,20 +20,18 @@ using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows;
 
 namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews
 {
     internal class InteractionDiagramLogic : ILongProcessLogic
     {
-        const double xmax = 0.7e6d; 
-        const double xmin = -0.7e6d; 
-        const double ymax = 1.5e6d; 
-        const double ymin = -9e6d; 
-
         private ArrayParameter<double> arrayParameter;
+        private IResult result;
+
         private static GeometryNames GeometryNames => ProgramSetting.GeometryNames;
 
-        public int StepCount { get; }
+        public int StepCount => SurroundData.PointCount;
 
         public Action<int> SetProgress { get; set; }
         public bool Result { get; set; }
@@ -40,29 +40,40 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
         public CalcTerms CalcTerm { get; set; }
         public ForceTuple ForceTuple { get; set; }
 
-        private void Show()
+        public SurroundData SurroundData { get; set; }
+
+        public InteractionDiagramLogic(SurroundData surroundData)
         {
-            var options = new TriangulationOptions() { LimiteState = LimitState, CalcTerm = CalcTerm };
-            var ndmCollection = NdmPrimitives.SelectMany(x => x.GetNdms(options));
-            //var ndmCollection = NdmPrimitivesService.GetNdms(NdmPrimitives, LimitState, CalcTerm);
+            SurroundData = surroundData;
+        }
+
+        private void DoCalculations()
+        {
+            var ndmCollection = NdmPrimitivesService.GetNdms(NdmPrimitives, LimitState, CalcTerm);
 
             var predicateFactory = new PredicateFactory()
             {
-                My = ForceTuple.My,
+                My = SurroundData.ConstZ,
                 Ndms = ndmCollection
             };
-            Predicate<IPoint2D> predicate = predicateFactory.GetResult;
+            Predicate<IPoint2D> predicate = predicateFactory.IsSectionFailure;
+            //Predicate<IPoint2D> predicate = predicateFactory.IsSectionCracked;
             //var logic = new StabLimitCurveLogic();
             var logic = new LimitCurveLogic(predicate);
             var calculator = new LimitCurveCalculator(logic);
-            calculator.SurroundData.XMax = xmax;
-            calculator.SurroundData.XMin = xmin;
-            calculator.SurroundData.YMax = ymax;
-            calculator.SurroundData.YMin = ymin;
-            calculator.SurroundData.PointCount = 40;
+            calculator.SurroundData = SurroundData;
+            calculator.ActionToOutputResults = SetProgressByResult;
+            SafetyProcessor.RunSafeProcess(() =>
+            {
+                CalcResult(calculator);
+            }, "Errors appeared during showing a graph, see detailed information");
+        }
+
+        private void CalcResult(LimitCurveCalculator calculator)
+        {
             calculator.Run();
-            var result = calculator.Result;
-            if (result.IsValid = false) { return; }
+            result = calculator.Result;
+            if (result.IsValid == false) { return; }
             var interactionResult = result as LimitCurveResult;
             var unitForce = CommonOperation.GetUnit(UnitTypes.Force, "kN");
             var unitMoment = CommonOperation.GetUnit(UnitTypes.Moment, "kNm");
@@ -73,18 +84,27 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
             for (int i = 0; i < items.Count(); i++)
             {
                 var valueList = new List<double>
-                {
-                    items[i].X * unitForce.Multiplyer,
-                    items[i].Y * unitMoment.Multiplyer
-                };
+                    {
+                        items[i].X * unitForce.Multiplyer,
+                        items[i].Y * unitMoment.Multiplyer
+                    };
                 for (int j = 0; j < valueList.Count; j++)
                 {
                     data[i, j] = valueList[j];
                 }
-                SetProgress?.Invoke(i);
             }
         }
 
+        private void SetProgressByResult(IResult calcResult)
+        {
+            if (calcResult is not LimitCurveResult)
+            {
+                throw new StructureHelperException(ErrorStrings.ExpectedWas(typeof(LimitCurveResult), calcResult));
+            }
+            var parameterResult = calcResult as LimitCurveResult;
+            SetProgress?.Invoke(parameterResult.IterationNumber);
+        }
+
         private static string[] GetLabels(IUnit unitForce, IUnit unitMoment)
         {
             return new string[]
@@ -96,19 +116,25 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
 
         public void ShowWindow()
         {
-            Show();
             Result = true;
             SafetyProcessor.RunSafeProcess(() =>
             {
-                var wnd = new GraphView(arrayParameter);
-                wnd.ShowDialog();
+                if (result.IsValid == true)
+                {
+                    var wnd = new GraphView(arrayParameter);
+                    wnd.ShowDialog();
+                }
+                else
+                {
+                    MessageBox.Show(result.Description);
+                }
             },
             "Errors appeared during showing a graph, see detailed information");
         }
 
         public void WorkerDoWork(object sender, DoWorkEventArgs e)
         {
-            Show();
+            DoCalculations();
             Result = true;
         }
 
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataView.xaml b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataView.xaml
new file mode 100644
index 0000000..687cfc6
--- /dev/null
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataView.xaml
@@ -0,0 +1,52 @@
+<Window x:Class="StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews.ForceResultLogic.SurroundDataView"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews.ForceResultLogic"
+        xmlns:uc="clr-namespace:StructureHelper.Windows.UserControls"
+        d:DataContext ="{d:DesignInstance local:SurroundDataViewModel}"
+        mc:Ignorable="d"
+        Title="Diagram properties" Height="250" Width="400" ResizeMode="NoResize" WindowStartupLocation="CenterScreen">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="35"/>
+        </Grid.RowDefinitions>
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="25"/>
+                <RowDefinition Height="25"/>
+                <RowDefinition Height="25"/>
+                <RowDefinition Height="25"/>
+                <RowDefinition Height="25"/>
+                <RowDefinition Height="25"/>
+                <RowDefinition/>
+            </Grid.RowDefinitions>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="170"/>
+                <ColumnDefinition/>
+                <ColumnDefinition Width="120"/>
+            </Grid.ColumnDefinitions>
+            <TextBlock Text="Maximum axial force"/>
+            <TextBlock Grid.Row="1" Text="Minimum axial force"/>
+            <TextBlock Grid.Row="2" Text="Maximum bending moment Mx"/>
+            <TextBlock Grid.Row="3" Text="Minimum bending moment Mx"/>
+            <TextBlock Grid.Row="4" Text="Minimum bending moment My"/>
+            <TextBlock Grid.Row="5" Text="Point count"/>
+            <TextBox Grid.Column="1" Text="{Binding YMax, Converter={StaticResource ForceConverter}, ValidatesOnDataErrors=True}"/>
+            <TextBox Grid.Column="1" Grid.Row="1" Text="{Binding YMin, Converter={StaticResource ForceConverter}, ValidatesOnDataErrors=True}"/>
+            <TextBox Grid.Column="1" Grid.Row="2" Text="{Binding XMax, Converter={StaticResource MomentConverter}, ValidatesOnDataErrors=True}"/>
+            <TextBox Grid.Column="1" Grid.Row="3" Text="{Binding XMin, Converter={StaticResource MomentConverter}, ValidatesOnDataErrors=True}"/>
+            <TextBox Grid.Column="1" Grid.Row="4" Text="{Binding ConstZ, Converter={StaticResource MomentConverter}, ValidatesOnDataErrors=True}"/>
+            <TextBox Grid.Column="1" Grid.Row="5" Text="{Binding PointCount, ValidatesOnDataErrors=True}"/>
+            <uc:MultiplyDouble Margin="2" Grid.Column="4" Grid.Row="0" ValueChanged="YmaxChanged"/>
+            <uc:MultiplyDouble Margin="2" Grid.Column="4" Grid.Row="1" ValueChanged="YminChanged"/>
+            <uc:MultiplyDouble Margin="2" Grid.Column="4" Grid.Row="2" ValueChanged="XmaxChanged"/>
+            <uc:MultiplyDouble Margin="2" Grid.Column="4" Grid.Row="3" ValueChanged="XminChanged"/>
+            <uc:MultiplyDouble Margin="2" Grid.Column="4" Grid.Row="4" ValueChanged="ConstZChanged"/>
+            <uc:MultiplyDouble Margin="2" Grid.Column="4" Grid.Row="5" ValueChanged="PointCountChanged"/>
+        </Grid>
+        <ContentControl Grid.Row="1" ContentTemplate="{StaticResource OkCancelButtons}" Content="{Binding}"/>
+    </Grid>
+</Window>
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataView.xaml.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataView.xaml.cs
new file mode 100644
index 0000000..1289d55
--- /dev/null
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataView.xaml.cs
@@ -0,0 +1,67 @@
+using StructureHelper.Windows.UserControls;
+using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews.ForceResultLogic
+{
+    /// <summary>
+    /// Логика взаимодействия для SurroundDataView.xaml
+    /// </summary>
+    public partial class SurroundDataView : Window
+    {
+        private SurroundDataViewModel viewModel;
+        public SurroundDataView(SurroundData surroundData) : this(new SurroundDataViewModel(surroundData)) { }
+        public SurroundDataView(SurroundDataViewModel vm)
+        {
+            viewModel = vm;
+            viewModel.ParentWindow = this;
+            DataContext = viewModel;
+            InitializeComponent();
+        }
+
+        private void XmaxChanged(object sender, EventArgs e)
+        {
+            viewModel.XMax *= ChangeValue(sender);
+        }
+        private void XminChanged(object sender, EventArgs e)
+        {
+            viewModel.XMin *= ChangeValue(sender);
+        }
+
+        private void YmaxChanged(object sender, EventArgs e)
+        {
+            viewModel.YMax *= ChangeValue(sender);
+        }
+        private void YminChanged(object sender, EventArgs e)
+        {
+            viewModel.YMin *= ChangeValue(sender);
+        }
+        private void ConstZChanged(object sender, EventArgs e)
+        {
+            viewModel.ConstZ *= ChangeValue(sender);
+        }
+        private void PointCountChanged(object sender, EventArgs e)
+        {
+            viewModel.PointCount = Convert.ToInt32(viewModel.PointCount * ChangeValue(sender));
+        }
+
+        private double ChangeValue(object sender)
+        {
+            var obj = (MultiplyDouble)sender;
+            var factor = obj.DoubleFactor;
+            return factor;
+        }
+    }
+}
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataViewModel.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataViewModel.cs
new file mode 100644
index 0000000..55ff844
--- /dev/null
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForceResultLogic/SurroundDataViewModel.cs
@@ -0,0 +1,107 @@
+using StructureHelper.Windows.ViewModels;
+using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews.ForceResultLogic
+{
+    public class SurroundDataViewModel : OkCancelViewModelBase, IDataErrorInfo
+    {
+        private readonly SurroundData surroundData;
+
+        public double XMax
+        {
+            get => surroundData.XMax; set
+            {
+                surroundData.XMax = value;
+                OnPropertyChanged(nameof(XMax));
+            }
+        }
+        public double XMin
+        {
+            get => surroundData.XMin; set
+            {
+                surroundData.XMin = value;
+                OnPropertyChanged(nameof(XMin));
+            }
+        }
+        public double YMax
+        {
+            get => surroundData.YMax; set
+            {
+                surroundData.YMax = value;
+                OnPropertyChanged(nameof(YMax));
+            }
+        }
+        public double YMin
+        {
+            get => surroundData.YMin; set
+            {
+                surroundData.YMin = value;
+                OnPropertyChanged(nameof(YMin));
+            }
+        }
+        public double ConstZ
+        {
+            get => surroundData.ConstZ; set
+            {
+                surroundData.ConstZ = value;
+                OnPropertyChanged(nameof(ConstZ));
+            }
+        }
+        public int PointCount
+        {
+            get => surroundData.PointCount; set
+            {
+                try
+                {
+                    surroundData.PointCount = value;
+                }
+                catch (Exception)
+                {
+                    surroundData.PointCount = 40;
+                }
+                OnPropertyChanged(nameof(PointCount));
+            }
+        }
+
+        public string Error => throw new NotImplementedException();
+
+        public string this[string columnName]
+        {
+            get
+            {
+                string error = String.Empty;
+                switch (columnName)
+                {
+                    case nameof(PointCount):
+                        if (PointCount < 24)
+                        {
+                            error = "Point count must be greater than 24";
+                        }
+                        break;
+                }
+                return error;
+            }
+        }
+
+        public SurroundDataViewModel(SurroundData surroundData)
+        {
+            this.surroundData = surroundData;
+        }
+
+        internal void RefreshAll()
+        {
+            OnPropertyChanged(nameof(XMax));
+            OnPropertyChanged(nameof(XMin));
+            OnPropertyChanged(nameof(YMax));
+            OnPropertyChanged(nameof(YMin));
+            OnPropertyChanged(nameof(ConstZ));
+            OnPropertyChanged(nameof(PointCount));
+        }
+    }
+}
diff --git a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsViewModel.cs b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsViewModel.cs
index 8a5e381..7203182 100644
--- a/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsViewModel.cs
+++ b/StructureHelper/Windows/CalculationWindows/CalculatorsViews/ForceCalculatorViews/ForcesResultsViewModel.cs
@@ -5,6 +5,7 @@ using StructureHelper.Services.Exports;
 using StructureHelper.Services.Reports;
 using StructureHelper.Services.Reports.CalculationReports;
 using StructureHelper.Services.ResultViewers;
+using StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalculatorViews.ForceResultLogic;
 using StructureHelper.Windows.CalculationWindows.CalculatorsViews.GeometryCalculatorViews;
 using StructureHelper.Windows.Errors;
 using StructureHelper.Windows.Forces;
@@ -38,7 +39,7 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
         private ForceCalculator forceCalculator;
         private ILongProcessLogic progressLogic;
         private ShowProgressLogic showProgressLogic;
-        private InteractionDiagramLogic interactionDiagramLogic = new();
+        private InteractionDiagramLogic interactionDiagramLogic;
         private static readonly ShowCrackResultLogic showCrackResultLogic = new();
         private static readonly ShowCrackWidthLogic showCrackWidthLogic = new();
         private IForcesResults forcesResults;
@@ -73,11 +74,25 @@ namespace StructureHelper.Windows.CalculationWindows.CalculatorsViews.ForceCalcu
                 return showInteractionDiagramCommand ??
                     (showInteractionDiagramCommand = new RelayCommand(o =>
                     {
-                        interactionDiagramLogic.ForceTuple = SelectedResult.DesignForceTuple.ForceTuple.Clone() as ForceTuple;
-                        interactionDiagramLogic.LimitState = SelectedResult.DesignForceTuple.LimitState;
-                        interactionDiagramLogic.CalcTerm = SelectedResult.DesignForceTuple.CalcTerm;
-                        interactionDiagramLogic.NdmPrimitives = ndmPrimitives;
-                        interactionDiagramLogic.ShowWindow();
+                        var tuple = SelectedResult.DesignForceTuple.ForceTuple.Clone() as ForceTuple;
+                        var data = new SurroundData();
+                        data.ConstZ = tuple.My;
+                        var wnd = new SurroundDataView(data);
+                        wnd.ShowDialog();
+                        if (wnd.DialogResult != true) return;
+                        interactionDiagramLogic = new(data)
+                        {
+                            ForceTuple = tuple,
+                            LimitState = SelectedResult.DesignForceTuple.LimitState,
+                            CalcTerm = SelectedResult.DesignForceTuple.CalcTerm,
+                            NdmPrimitives = ndmPrimitives
+                        };
+                        showProgressLogic = new(interactionDiagramLogic)
+                        {
+                            WindowTitle = "Diagram creating...",
+                            ShowResult = interactionDiagramLogic.ShowWindow
+                        };
+                        showProgressLogic.Show();
                     }, o => SelectedResult != null && SelectedResult.IsValid));
             }
         }
diff --git a/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml b/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml
index fdfdbd7..5823dfc 100644
--- a/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml
+++ b/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml
@@ -8,7 +8,7 @@
         xmlns:uc="clr-namespace:StructureHelper.Windows.UserControls"
         d:DataContext="{d:DesignInstance local:InterpolateTuplesViewModel}"
         mc:Ignorable="d"
-        Title="Interpolate Combinations" Height="200" Width="400" MinHeight="180" MinWidth="400" WindowStartupLocation="CenterScreen">
+        Title="Interpolate Combinations" Height="200" Width="460" MinHeight="180" MinWidth="460" WindowStartupLocation="CenterScreen">
     <Window.Resources>
         <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
         <Style TargetType="Button">
@@ -40,7 +40,7 @@
                     <ColumnDefinition/>
                     <ColumnDefinition/>
                     <ColumnDefinition/>
-                    <ColumnDefinition/>
+                    <ColumnDefinition Width="120"/>
                 </Grid.ColumnDefinitions>
                 <TextBlock Grid.Column="1" Text="Moment Mx" HorizontalAlignment="Center"/>
                 <TextBlock Grid.Column="2" Text="Moment My" HorizontalAlignment="Center"/>
@@ -99,8 +99,9 @@
                 <TextBox Grid.Row="3" Grid.Column="3" Text="{Binding FinishNz, Converter={StaticResource ForceConverter}, ValidatesOnExceptions=True}"/>
                 <TextBlock Grid.Row="4" Text="Step count" Visibility="{Binding StepCountVisible, Converter={StaticResource BooleanToVisibilityConverter}}"/>
                 <TextBox Grid.Row="4" Grid.Column="1" Text="{Binding StepCount, ValidatesOnExceptions=True}" Visibility="{Binding StepCountVisible, Converter={StaticResource BooleanToVisibilityConverter}}"/>
-                <uc:MultiplyTuple Grid.Column="4" Grid.Row="1" ForceTuple="{Binding StartDesignForce.ForceTuple}" ValueChanged="StartValueChanged"/>
-                <uc:MultiplyTuple Grid.Column="4" Grid.Row="3" ForceTuple="{Binding FinishDesignForce.ForceTuple}" ValueChanged="FinishValueChanged"/>
+                <uc:MultiplyDouble Grid.Column="4" Grid.Row="1" DoubleFactor="{Binding StartFactor}" ValueChanged="StartValueChanged"/>
+                <uc:MultiplyDouble Grid.Column="4" Grid.Row="3" DoubleFactor="{Binding FinishFactor}" ValueChanged="FinishValueChanged"/>
+                <uc:MultiplyDouble Grid.Column="4" Grid.Row="4" DoubleFactor="{Binding FinishFactor}" ValueChanged="StepCountValueChanged"/>
             </Grid>
         </Grid>
 
diff --git a/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml.cs b/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml.cs
index e37748f..7f0c96d 100644
--- a/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml.cs
+++ b/StructureHelper/Windows/Forces/InterpolateTuplesView.xaml.cs
@@ -1,5 +1,7 @@
-using StructureHelper.Windows.ViewModels.Forces;
+using StructureHelper.Windows.UserControls;
+using StructureHelper.Windows.ViewModels.Forces;
 using StructureHelperCommon.Models.Forces;
+using StructureHelperCommon.Services.Forces;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -38,12 +40,28 @@ namespace StructureHelper.Windows.Forces
 
         private void StartValueChanged(object sender, EventArgs e)
         {
+            var obj = (MultiplyDouble)sender;
+            var tmpTuple = ForceTupleService.MultiplyTuples(viewModel.StartDesignForce.ForceTuple, obj.DoubleFactor);
+            ForceTupleService.CopyProperties(tmpTuple, viewModel.StartDesignForce.ForceTuple, 1d);
             viewModel.RefreshStartTuple();
         }
 
         private void FinishValueChanged(object sender, EventArgs e)
         {
+            var obj = (MultiplyDouble)sender;
+            var tmpTuple = ForceTupleService.MultiplyTuples(viewModel.FinishDesignForce.ForceTuple, obj.DoubleFactor);
+            ForceTupleService.CopyProperties(tmpTuple, viewModel.FinishDesignForce.ForceTuple, 1d);
             viewModel.RefreshFinishTuple();
         }
+
+        private void StepCountValueChanged(object sender, EventArgs e)
+        {
+            var obj = (MultiplyDouble)sender;
+            var factor = obj.DoubleFactor;
+            if (factor > 0d)
+            {
+                viewModel.StepCount = Convert.ToInt32(viewModel.StepCount * factor);
+            }
+        }
     }
 }
diff --git a/StructureHelper/Windows/Forces/InterpolateTuplesViewModel.cs b/StructureHelper/Windows/Forces/InterpolateTuplesViewModel.cs
index 2df7d0a..da5f1fb 100644
--- a/StructureHelper/Windows/Forces/InterpolateTuplesViewModel.cs
+++ b/StructureHelper/Windows/Forces/InterpolateTuplesViewModel.cs
@@ -11,10 +11,15 @@ namespace StructureHelper.Windows.Forces
         private RelayCommand invertForcesCommand;
         private RelayCommand copyToStartCommand;
         private RelayCommand copyToFinishCommand;
+        private int stepCount;
 
         public IDesignForceTuple StartDesignForce { get; set; }
         public IDesignForceTuple FinishDesignForce { get; set; }
 
+        public double StartFactor { get; set; }
+        public double FinishFactor { get; set; }
+        public double StepCountFactor { get; set; }
+
         public bool StepCountVisible { get; set; }
         public double StartMx
         {
@@ -70,23 +75,27 @@ namespace StructureHelper.Windows.Forces
                 OnPropertyChanged(nameof(FinishNz));
             }
         }
-        public int StepCount { get; set; }
+        public int StepCount
+        {
+            get => stepCount; set
+            {
+                stepCount = value;
+                OnPropertyChanged(nameof(StepCount));
+            }
+        }
 
         public ICommand InvertForcesCommand
         {
             get => invertForcesCommand ??= new RelayCommand(o => InvertForces());
         }
-
         public ICommand CopyToStartCommand
         {
             get => copyToStartCommand ??= new RelayCommand(o => CopyFinishToStart());
         }
-
         public ICommand CopyToFinishCommand
         {
             get => copyToFinishCommand ??= new RelayCommand(o => CopyStartToFinish());
         }
-
         public InterpolateTuplesResult Result
         {
             get => new()
diff --git a/StructureHelper/Windows/Graphs/GraphService.cs b/StructureHelper/Windows/Graphs/GraphService.cs
new file mode 100644
index 0000000..e22cff4
--- /dev/null
+++ b/StructureHelper/Windows/Graphs/GraphService.cs
@@ -0,0 +1,23 @@
+using LiveCharts.Wpf;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Ink;
+using System.Windows.Media;
+
+namespace StructureHelper.Windows.Graphs
+{
+    internal static class GraphService
+    {
+        public static void SetVisualProps(LineSeries lineSeries, GraphVisualProps visualProps, Color color)
+        {
+            lineSeries.Stroke = new SolidColorBrush(color);
+            lineSeries.Fill = new SolidColorBrush(color) { Opacity = visualProps.Opacity };
+            lineSeries.LineSmoothness = visualProps.LineSmoothness;
+            lineSeries.PointGeometry = DefaultGeometries.Circle;
+            lineSeries.PointGeometrySize = visualProps.StrokeSize;
+        }
+    }
+}
diff --git a/StructureHelper/Windows/Graphs/GraphView.xaml b/StructureHelper/Windows/Graphs/GraphView.xaml
index e1022c7..5e7d75a 100644
--- a/StructureHelper/Windows/Graphs/GraphView.xaml
+++ b/StructureHelper/Windows/Graphs/GraphView.xaml
@@ -7,7 +7,7 @@
         xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
         d:DataContext="{d:DesignInstance local:GraphViewModel}"
         mc:Ignorable="d"
-        Title="Graph" Height="450" Width="800" MinHeight="400" MinWidth="600" WindowStartupLocation="CenterScreen">
+        Title="Graph" Height="550" Width="800" MinHeight="500" MinWidth="600" WindowStartupLocation="CenterScreen">
     <DockPanel>
         <!--<ToolBarTray DockPanel.Dock="Top">
             <ToolBar>
@@ -30,7 +30,7 @@
                     <Grid.RowDefinitions>
                         <RowDefinition Height="70"/>
                         <RowDefinition/>
-                        <RowDefinition Height="120"/>
+                        <RowDefinition Height="170"/>
                     </Grid.RowDefinitions>
                     <GroupBox Grid.Row="0" Header="X-axis values">
                         <StackPanel>
diff --git a/StructureHelper/Windows/Graphs/GraphViewModel.cs b/StructureHelper/Windows/Graphs/GraphViewModel.cs
index 477ad8f..d605ac0 100644
--- a/StructureHelper/Windows/Graphs/GraphViewModel.cs
+++ b/StructureHelper/Windows/Graphs/GraphViewModel.cs
@@ -165,13 +165,8 @@ namespace StructureHelper.Windows.Graphs
                     .X(point => point.X)
                     .Y(point => point.Y),
                     Title = yParameter.Name,
-                    //PointGeometry = null,
-                    Stroke = new SolidColorBrush(yParameter.Color),
-                    Fill = Brushes.Transparent,
-                    LineSmoothness = VisualProps.LineSmoothness,
-                    PointGeometry = DefaultGeometries.Circle,
-                    PointGeometrySize = VisualProps.StrokeSize
                 };
+                GraphService.SetVisualProps(lineSeries, VisualProps, yParameter.Color);
                 _ = valueList.TryGetValue(xParameter, out double[] xValues);
                 _ = valueList.TryGetValue(yParameter, out double[] yValues);
                 var chartValues = new ChartValues<Point2D>();
diff --git a/StructureHelper/Windows/Graphs/GraphVisualProps.cs b/StructureHelper/Windows/Graphs/GraphVisualProps.cs
index 2d65096..5556372 100644
--- a/StructureHelper/Windows/Graphs/GraphVisualProps.cs
+++ b/StructureHelper/Windows/Graphs/GraphVisualProps.cs
@@ -7,6 +7,7 @@ namespace StructureHelper.Windows.Graphs
     {
         private double lineSmoothness;
         private double strokeSize;
+        private double opacity;
 
         public double LineSmoothness
         {
@@ -37,6 +38,18 @@ namespace StructureHelper.Windows.Graphs
         public double MaxLineSmoothness { get; }
         public double MaxStrokeSize { get; }
 
+        public double Opacity
+        {
+            get => opacity; set
+            {
+                value = Math.Max(value, 0d);
+                value = Math.Min(value, 1d);
+                value = Math.Round(value, 2);
+                opacity = value;
+                OnPropertyChanged(nameof(Opacity));
+            }
+        }
+
         public GraphVisualProps()
         {
             MaxLineSmoothness = 1d;
@@ -44,6 +57,7 @@ namespace StructureHelper.Windows.Graphs
 
             lineSmoothness = 0.3;
             strokeSize = 0;
+            Opacity = 0d;
         }
     }
 }
diff --git a/StructureHelper/Windows/Graphs/MaterialDiagramView.xaml b/StructureHelper/Windows/Graphs/MaterialDiagramView.xaml
index d75bbfa..a095519 100644
--- a/StructureHelper/Windows/Graphs/MaterialDiagramView.xaml
+++ b/StructureHelper/Windows/Graphs/MaterialDiagramView.xaml
@@ -7,7 +7,7 @@
         xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
         d:DataContext="{d:DesignInstance local:MaterialDiagramViewModel}"
         mc:Ignorable="d"
-        Title="Material Diagram" Height="450" Width="800" WindowStartupLocation="CenterScreen">
+        Title="Material Diagram" Height="550" Width="800" MinHeight="550" MinWidth="800" WindowStartupLocation="CenterScreen">
     <Grid>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="250"/>
@@ -16,7 +16,7 @@
         <Grid>
             <Grid.RowDefinitions>
                 <RowDefinition/>
-                <RowDefinition Height="120"/>
+                <RowDefinition Height="170"/>
                 <RowDefinition Height="30"/>
             </Grid.RowDefinitions>
             <ScrollViewer VerticalScrollBarVisibility="Auto">
diff --git a/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs b/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs
index dfd6410..e045b9e 100644
--- a/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs
+++ b/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs
@@ -6,6 +6,7 @@ using StructureHelper.Models.Materials;
 using StructureHelper.Windows.ViewModels;
 using StructureHelperCommon.Infrastructures.Enums;
 using StructureHelperCommon.Infrastructures.Settings;
+using StructureHelperCommon.Services.ColorServices;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -212,15 +213,14 @@ namespace StructureHelper.Windows.Graphs
                         var lineSeries = new LineSeries()
                         {
                             Title = $"{material.Name} ({calcTerm.ShortName} {limitState.ShortName})",
-                            //Stroke = new SolidColorBrush(material.Color),
-                            Fill = Brushes.Transparent,
-                            LineSmoothness = VisualProps.LineSmoothness,
-                            PointGeometry = DefaultGeometries.Circle,
-                            PointGeometrySize = VisualProps.StrokeSize
                         };
                         if (limitStates.Count() == 1 && calcTerms.Count() == 1)
                         {
-                            lineSeries.Stroke = new SolidColorBrush(material.Color);
+                            GraphService.SetVisualProps(lineSeries, VisualProps, material.Color);
+                        }
+                        else
+                        {
+                            GraphService.SetVisualProps(lineSeries, VisualProps, ColorProcessor.GetRandomColor());
                         }
                         var chartValues = new ChartValues<double>();
                         for (double s = minValue; s < maxValue; s += step)
diff --git a/StructureHelper/Windows/MainWindow/MainModel.cs b/StructureHelper/Windows/MainWindow/MainModel.cs
index 24ce8a7..baf209c 100644
--- a/StructureHelper/Windows/MainWindow/MainModel.cs
+++ b/StructureHelper/Windows/MainWindow/MainModel.cs
@@ -16,6 +16,7 @@ using StructureHelperLogics.Models.Materials;
 using StructureHelperLogics.NdmCalculations.Triangulations;
 using StructureHelperLogics.Services;
 using StructureHelperLogics.Services.NdmCalculations;
+using StructureHelperLogics.Services.NdmPrimitives;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
@@ -35,7 +36,7 @@ namespace StructureHelper.Windows.MainWindow
         public IPrimitiveRepository PrimitiveRepository => primitiveRepository;
 
         public ICalculationProperty CalculationProperty { get; private set; }
-        
+
         public MainModel(IPrimitiveRepository primitiveRepository, CalculationService calculationService, UnitSystemService unitSystemService)
         {
             this.primitiveRepository = primitiveRepository;
@@ -47,16 +48,16 @@ namespace StructureHelper.Windows.MainWindow
             HeadMaterials = new List<IHeadMaterial>();
             HeadMaterialRepository = new HeadMaterialRepository(this);
         }
-        
+
         public IEnumerable<INdm> GetNdms(ICalculationProperty calculationProperty)
         {
             var ndmPrimitives = Section.SectionRepository.Primitives;
+            return NdmPrimitivesService.GetNdms(ndmPrimitives, calculationProperty.LimitState, calculationProperty.CalcTerm);
+            ////Настройки триангуляции, пока опции могут быть только такие
+            //ITriangulationOptions options = new TriangulationOptions { LimiteState = calculationProperty.LimitState, CalcTerm = calculationProperty.CalcTerm };
 
-            //Настройки триангуляции, пока опции могут быть только такие
-            ITriangulationOptions options = new TriangulationOptions { LimiteState = calculationProperty.LimitState, CalcTerm = calculationProperty.CalcTerm };
-
-            //Формируем коллекцию элементарных участков для расчета в библитеке (т.е. выполняем триангуляцию)
-            return ndmPrimitives.SelectMany(x => x.GetNdms(options));
+            ////Формируем коллекцию элементарных участков для расчета в библитеке (т.е. выполняем триангуляцию)
+            //return ndmPrimitives.SelectMany(x => x.GetNdms(options));
         }
     }
 }
diff --git a/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml b/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml
index b777f00..2de2acb 100644
--- a/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml
+++ b/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:StructureHelper.Windows.PrimitivePropertiesWindow"
         xmlns:vm="clr-namespace:StructureHelper.Windows.ViewModels.PrimitiveProperties"
         mc:Ignorable="d"
-        d:DataContext="{d:DesignInstance vm:SelectPrimitivesViewModel}"
+        d:DataContext="{d:DesignInstance local:SelectPrimitivesViewModel}"
         Title="Select Primitives" Height="250" Width="250" MinHeight="250" MinWidth="250" MaxHeight="500" MaxWidth="500" WindowStartupLocation="CenterScreen">
     <Grid>
         <Grid.RowDefinitions>
diff --git a/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml.cs b/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml.cs
index bec6558..e35747f 100644
--- a/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml.cs
+++ b/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesView.xaml.cs
@@ -1,5 +1,4 @@
-using StructureHelper.Windows.ViewModels.PrimitiveProperties;
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
diff --git a/StructureHelper/Windows/ViewModels/PrimitiveProperties/SelectPrimitivesViewModel.cs b/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesViewModel.cs
similarity index 88%
rename from StructureHelper/Windows/ViewModels/PrimitiveProperties/SelectPrimitivesViewModel.cs
rename to StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesViewModel.cs
index 5bec5db..24ce452 100644
--- a/StructureHelper/Windows/ViewModels/PrimitiveProperties/SelectPrimitivesViewModel.cs
+++ b/StructureHelper/Windows/PrimitivePropertiesWindow/SelectPrimitivesViewModel.cs
@@ -1,4 +1,5 @@
 using StructureHelper.Infrastructure.UI.DataContexts;
+using StructureHelper.Windows.ViewModels;
 using StructureHelperLogics.NdmCalculations.Primitives;
 using System;
 using System.Collections.Generic;
@@ -7,7 +8,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
 
-namespace StructureHelper.Windows.ViewModels.PrimitiveProperties
+namespace StructureHelper.Windows.PrimitivePropertiesWindow
 {
     public class SelectPrimitivesViewModel : OkCancelViewModelBase
     {
diff --git a/StructureHelper/Windows/UserControls/MultiplyTuple.xaml b/StructureHelper/Windows/UserControls/MultiplyDouble.xaml
similarity index 76%
rename from StructureHelper/Windows/UserControls/MultiplyTuple.xaml
rename to StructureHelper/Windows/UserControls/MultiplyDouble.xaml
index 9a078a4..d505bde 100644
--- a/StructureHelper/Windows/UserControls/MultiplyTuple.xaml
+++ b/StructureHelper/Windows/UserControls/MultiplyDouble.xaml
@@ -1,18 +1,22 @@
-<UserControl x:Class="StructureHelper.Windows.UserControls.MultiplyTuple"
+<UserControl x:Class="StructureHelper.Windows.UserControls.MultiplyDouble"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:StructureHelper.Windows.UserControls"
              mc:Ignorable="d" 
-             d:DesignHeight="25" d:DesignWidth="60">
+             d:DesignHeight="25" d:DesignWidth="120">
     <Grid>
         <Grid.ColumnDefinitions>
             <ColumnDefinition/>
             <ColumnDefinition/>
+            <ColumnDefinition/>
+            <ColumnDefinition/>
         </Grid.ColumnDefinitions>
-        <Button x:Name="Multy0_5" Grid.Column="0" Content="*0.5" Click="Multy0_5_Click"/>
-        <Button x:Name="Multy2_0" Grid.Column="1" Content="*2.0"  Click="Multy2_0_Click"/>
+        <Button x:Name="MultyM1_2" Grid.Column="0" Content="*-1" Click="MultyM1_2_Click"/>
+        <Button x:Name="Multy0_0" Grid.Column="1" Content="*0" Click="Multy0_Click"/>
+        <Button x:Name="Multy0_5" Grid.Column="2" Content="*0.5" Click="Multy0_5_Click"/>
+        <Button x:Name="Multy2_0" Grid.Column="3" Content="*2.0"  Click="Multy2_0_Click"/>
         <!--<Grid.ToolTip>
             <StackPanel Orientation="Horizontal">
                 <Button x:Name="MultyM1_2" Grid.Column="1" Content="*(-1)"  Click="MultyM1_2_Click"/>
diff --git a/StructureHelper/Windows/UserControls/MultiplyTuple.xaml.cs b/StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs
similarity index 68%
rename from StructureHelper/Windows/UserControls/MultiplyTuple.xaml.cs
rename to StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs
index 6aea13f..365ccdf 100644
--- a/StructureHelper/Windows/UserControls/MultiplyTuple.xaml.cs
+++ b/StructureHelper/Windows/UserControls/MultiplyDouble.xaml.cs
@@ -23,11 +23,11 @@ namespace StructureHelper.Windows.UserControls
     /// <summary>
     /// Логика взаимодействия для MultiplyTuple.xaml
     /// </summary>
-    public partial class MultiplyTuple : UserControl
+    public partial class MultiplyDouble : UserControl
     {
         public event EventHandler ValueChanged;
 
-        public MultiplyTuple()
+        public MultiplyDouble()
         {
             InitializeComponent();
             //DataContext = this;
@@ -51,15 +51,28 @@ namespace StructureHelper.Windows.UserControls
         }
 
 
-        public static readonly DependencyProperty ForceTupleProperty = DependencyProperty.Register(
-        "ForceTuple", typeof(ForceTuple), typeof(MultiplyTuple), new PropertyMetadata(new ForceTuple()));
+
+        public double DoubleValue
+        {
+            get { return (double)GetValue(DoubleValueProperty); }
+            set { SetValue(DoubleValueProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for DoubleValue.  This enables animation, styling, binding, etc...
+        public static readonly DependencyProperty DoubleValueProperty =
+            DependencyProperty.Register("DoubleValue", typeof(double), typeof(MultiplyDouble), new PropertyMetadata(new double()));
+
+
+
+        public static readonly DependencyProperty DoubleFactorProperty = DependencyProperty.Register(
+        "DoubleFactor", typeof(double), typeof(MultiplyDouble), new PropertyMetadata(new double()));
 
         private RelayCommand muliplyByFactor;
 
-        public ForceTuple ForceTuple
+        public double DoubleFactor
         {
-            get { return (ForceTuple)GetValue(ForceTupleProperty); }
-            set { SetValue(ForceTupleProperty, value); }
+            get { return (double)GetValue(DoubleFactorProperty); }
+            set { SetValue(DoubleFactorProperty, value); }
         }
 
         private void Multy0_5_Click(object sender, RoutedEventArgs e)
@@ -73,8 +86,8 @@ namespace StructureHelper.Windows.UserControls
 
         private void ChangeValue(double factor)
         {
-            var tmpTuple = ForceTupleService.MultiplyTuples(ForceTuple, factor);
-            ForceTupleService.CopyProperties(tmpTuple, ForceTuple, 1d);
+            DoubleValue *= factor;
+            DoubleFactor = factor;
             ValueChanged?.Invoke(this, EventArgs.Empty);
         }
 
diff --git a/StructureHelperCommon/Models/Calculators/FindParameterCalculator.cs b/StructureHelperCommon/Models/Calculators/FindParameterCalculator.cs
index 09b2c4d..02bb0b9 100644
--- a/StructureHelperCommon/Models/Calculators/FindParameterCalculator.cs
+++ b/StructureHelperCommon/Models/Calculators/FindParameterCalculator.cs
@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace StructureHelperCommon.Models.Calculators
 {
-    public class FindParameterCalculator : ICalculator
+    public class FindParameterCalculator : ICalculator, IHasActionByResult
     {
         FindParameterResult result;
         public string Name { get; set; }
@@ -18,21 +18,20 @@ namespace StructureHelperCommon.Models.Calculators
         public IAccuracy Accuracy {get;set;}
         public IResult Result => result;
 
-        public Action<IResult> ActionToOutputResults { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
+        public Action<IResult> ActionToOutputResults { get; set; }
 
         public FindParameterCalculator()
         {
             StartValue = 0d;
             EndValue = 1d;
-            Accuracy = new Accuracy() { IterationAccuracy = 0.001, MaxIterationCount = 1000 };
+            Accuracy = new Accuracy() { IterationAccuracy = 0.001d, MaxIterationCount = 1000 };
         }
         public void Run()
         {
-            result = new() { IsValid = true};
+            result = new();
             try
             {
-                result.Parameter = FindMinimumValue(StartValue, EndValue, Predicate);
-                result.Description = "Parameter was found succefully";
+                FindMinimumValue(StartValue, EndValue, Predicate);
             }
             catch(Exception ex)
             {
@@ -45,7 +44,7 @@ namespace StructureHelperCommon.Models.Calculators
             throw new NotImplementedException();
         }
 
-        private double FindMinimumValue(double start, double end, Predicate<double> predicate)
+        private void FindMinimumValue(double start, double end, Predicate<double> predicate)
         {
             if (predicate(end) == false)
             {
@@ -59,7 +58,7 @@ namespace StructureHelperCommon.Models.Calculators
             int iterationNum = 0;
             while (step > precision)
             {
-                if (predicate(current))
+                if (predicate(current) == true)
                 {
                     end = current;
                 }
@@ -71,13 +70,23 @@ namespace StructureHelperCommon.Models.Calculators
                 current = (start + end) / 2;
                 step = (end - start) / 2;
                 iterationNum++;
+
+                result.IsValid = false;
+                result.IterationNumber = iterationNum;
+                result.CurrentAccuracy = step;
+                ActionToOutputResults?.Invoke(result);
+
                 if (iterationNum > maxIterationCount)
                 {
+                    result.Description = "Parameter was not found succefully: \n";
                     throw new StructureHelperException(ErrorStrings.DataIsInCorrect + ": violation of iteration count");
                 }
             }
 
-            return current;
+            result.Parameter = current;
+            result.Description = "Parameter was found succefully";
+            result.IsValid = true;
+            ActionToOutputResults?.Invoke(result);
         }
     }
 }
diff --git a/StructureHelperCommon/Models/Calculators/FindParameterResult.cs b/StructureHelperCommon/Models/Calculators/FindParameterResult.cs
index 0e0fab8..8422ca0 100644
--- a/StructureHelperCommon/Models/Calculators/FindParameterResult.cs
+++ b/StructureHelperCommon/Models/Calculators/FindParameterResult.cs
@@ -6,10 +6,12 @@ using System.Threading.Tasks;
 
 namespace StructureHelperCommon.Models.Calculators
 {
-    public class FindParameterResult : IResult
+    public class FindParameterResult : IResult, IiterationResult
     {
         public bool IsValid { get; set; }
         public string Description { get; set; }
         public double Parameter { get; set; }
+        public int IterationNumber { get; set; }
+        public double CurrentAccuracy { get; set; }
     }
 }
diff --git a/StructureHelperCommon/Models/Calculators/ICalculator.cs b/StructureHelperCommon/Models/Calculators/ICalculator.cs
index 94ca5b3..25b9b9f 100644
--- a/StructureHelperCommon/Models/Calculators/ICalculator.cs
+++ b/StructureHelperCommon/Models/Calculators/ICalculator.cs
@@ -20,6 +20,5 @@ namespace StructureHelperCommon.Models.Calculators
         /// Result of Calculations
         /// </summary>
         IResult Result { get; }
-        Action<IResult> ActionToOutputResults { get; set; }
     }
 }
diff --git a/StructureHelperCommon/Models/Calculators/IHasActionByResult.cs b/StructureHelperCommon/Models/Calculators/IHasActionByResult.cs
new file mode 100644
index 0000000..0522f30
--- /dev/null
+++ b/StructureHelperCommon/Models/Calculators/IHasActionByResult.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Calculators
+{
+    public interface IHasActionByResult
+    {
+        Action<IResult> ActionToOutputResults { get; set; }
+    }
+}
diff --git a/StructureHelperCommon/Models/Calculators/IiterationResult.cs b/StructureHelperCommon/Models/Calculators/IiterationResult.cs
new file mode 100644
index 0000000..416f710
--- /dev/null
+++ b/StructureHelperCommon/Models/Calculators/IiterationResult.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Calculators
+{
+    public interface IiterationResult
+    {
+        int IterationNumber { get; set; }
+    }
+}
diff --git a/StructureHelperCommon/Services/Forces/ForceTupleService.cs b/StructureHelperCommon/Services/Forces/ForceTupleService.cs
index 028b405..ab74200 100644
--- a/StructureHelperCommon/Services/Forces/ForceTupleService.cs
+++ b/StructureHelperCommon/Services/Forces/ForceTupleService.cs
@@ -8,6 +8,12 @@ namespace StructureHelperCommon.Services.Forces
 {
     public static class ForceTupleService
     {
+        /// <summary>
+        /// Copy properties from target to source
+        /// </summary>
+        /// <param name="source">Source tuple</param>
+        /// <param name="target">Target tuple</param>
+        /// <param name="factor">factor</param>
         public static void CopyProperties(IForceTuple source, IForceTuple target, double factor = 1d)
         {
             CheckTuples(source, target);
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs
index 1b48552..6170f80 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceCalculator.cs
@@ -12,7 +12,7 @@ using StructureHelperLogics.Services.NdmPrimitives;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
-    public class ForceCalculator : IForceCalculator
+    public class ForceCalculator : IForceCalculator, IHasActionByResult
     {
         static readonly ForceCalculatorUpdateStrategy updateStrategy = new();
         public string Name { get; set; }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceTupleCalculator.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceTupleCalculator.cs
index 371034c..9b31605 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceTupleCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/ForceTupleCalculator.cs
@@ -6,7 +6,7 @@ using StructureHelperCommon.Models.Calculators;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
-    public class ForceTupleCalculator : IForceTupleCalculator
+    public class ForceTupleCalculator : IForceTupleCalculator, IHasActionByResult
     {
         public IForceTupleInputData InputData { get; set; }
         public string Name { get; set; }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveLogic.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveLogic.cs
index 2b10193..ed646b4 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveLogic.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveLogic.cs
@@ -1,4 +1,5 @@
-using StructureHelperCommon.Models.Shapes;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Shapes;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -7,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
-    public interface ILimitCurveLogic
+    public interface ILimitCurveLogic : IHasActionByResult
     {
         List<IPoint2D> GetPoints(List<IPoint2D> points);
     }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveParameterLogic.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveParameterLogic.cs
index 2a54061..bec00db 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveParameterLogic.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/ILimitCurveParameterLogic.cs
@@ -1,4 +1,5 @@
-using StructureHelperCommon.Models.Shapes;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Shapes;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -7,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
-    public interface ILimitCurveParameterLogic
+    public interface ILimitCurveParameterLogic : IHasActionByResult
     {
         IPoint2D CurrentPoint { get; set; }
         double GetParameter();
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveCalculator.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveCalculator.cs
index f26faee..941c6ea 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveCalculator.cs
@@ -1,4 +1,5 @@
-using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Shapes;
 using System;
 using System.Collections.Generic;
@@ -9,7 +10,7 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
-    public class LimitCurveCalculator : ICalculator
+    public class LimitCurveCalculator : ICalculator, IHasActionByResult
     {
         private LimitCurveResult result;
         private List<IPoint2D> surroundList;
@@ -50,14 +51,26 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
             surroundList = SurroundProcLogic.GetPoints();
             try
             {
+                limitCurveLogic.ActionToOutputResults = GetCurrentStepNumber;
                 factoredList = limitCurveLogic.GetPoints(surroundList);
                 result.Points = factoredList;
             }
             catch (Exception ex)
             {
                 result.IsValid = false;
-                result.Description = ex.Message;
+                result.Description += ex.Message;
             }
-        }        
+        }
+        
+        private void GetCurrentStepNumber(IResult calcResult)
+        {
+            if (calcResult is not FindParameterResult)
+            {
+                throw new StructureHelperException(ErrorStrings.ExpectedWas(typeof(FindParameterResult), calcResult));
+            }
+            var parameterResult = calcResult as FindParameterResult;
+            result.IterationNumber = parameterResult.IterationNumber;
+            ActionToOutputResults?.Invoke(result);
+        }
     }
 }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveLogic.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveLogic.cs
index 04ebea7..167fd9a 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveLogic.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveLogic.cs
@@ -11,9 +11,12 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
     public class LimitCurveLogic : ILimitCurveLogic
     {
+        private FindParameterResult result;
         private IPoint2D currentPoint;
         private ILimitCurveParameterLogic parameterLogic;
         public Predicate<IPoint2D> LimitPredicate { get; set; }
+        public Action<IResult> ActionToOutputResults { get; set; }
+
         public LimitCurveLogic(ILimitCurveParameterLogic parameterLogic)
         {
             this.parameterLogic = parameterLogic;
@@ -24,6 +27,7 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
         }
         public List<IPoint2D> GetPoints(List<IPoint2D> points)
         {
+            result = new();
             List<IPoint2D> resultList = new();
             if (LimitPredicate(new Point2D()) == true)
             {
@@ -48,6 +52,8 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
                     Y = currentPoint.Y * parameter
                 };
                 resultList.Add(resultPoint);
+                result.IterationNumber = resultList.Count;
+                ActionToOutputResults?.Invoke(result);
             }
             return resultList;
         }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveParameterLogic.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveParameterLogic.cs
index 88fa766..b9eb182 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveParameterLogic.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveParameterLogic.cs
@@ -11,8 +11,10 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
     public class LimitCurveParameterLogic : ILimitCurveParameterLogic
     {
+        private FindParameterResult result;
         private Predicate<Point2D> limitPredicate;
         public IPoint2D CurrentPoint { get; set; }
+        public Action<IResult> ActionToOutputResults { get; set; }
 
         public LimitCurveParameterLogic(Predicate<Point2D> limitPredicate)
         {
@@ -31,8 +33,16 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
             {
                 throw new StructureHelperException(ErrorStrings.DataIsInCorrect + $": predicate for point  (x={CurrentPoint.X}, y={CurrentPoint.Y}) is not valid");
             }
-            var result = parameterCalculator.Result as FindParameterResult;
+            result = parameterCalculator.Result as FindParameterResult;
             var parameter = result.Parameter;
+            if (parameter < 0.1d)
+            {
+                parameterCalculator.Accuracy.IterationAccuracy = 0.0001d;
+                parameterCalculator.Run();
+                result = parameterCalculator.Result as FindParameterResult;
+                parameter = result.Parameter;
+            }
+
             return parameter;
         }
 
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveResult.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveResult.cs
index 90bec7d..a1d8069 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveResult.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/LimitCurveResult.cs
@@ -8,11 +8,13 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
-    public class LimitCurveResult : IResult
+    public class LimitCurveResult : IResult, IiterationResult
     {
         public bool IsValid { get; set; }
         public string Description { get; set; }
         public List<IPoint2D> Points { get; set; }
+        public int IterationNumber { get; set; }
+
         public LimitCurveResult()
         {
             Points = new List<IPoint2D>();
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/PredicateFactory.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/PredicateFactory.cs
index 5eef0c2..1a81784 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/PredicateFactory.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/PredicateFactory.cs
@@ -2,6 +2,7 @@
 using StructureHelperCommon.Models.Calculators;
 using StructureHelperCommon.Models.Forces;
 using StructureHelperCommon.Models.Shapes;
+using StructureHelperLogics.NdmCalculations.Cracking;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -12,17 +13,52 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
     public class PredicateFactory
     {
+        
+        private ForceTupleCalculator calculator;
+        private ForceTuple tuple;
+        private ForceTupleInputData inputData;
         public IEnumerable<INdm> Ndms { get; set; }
         public double My { get; set; }
-        public bool GetResult(IPoint2D point)
+        public PredicateFactory()
         {
-            var calculator = new ForceTupleCalculator();
-            var tuple = new ForceTuple() { Nz = point.Y, Mx = point.X, My = My };
-            var inputData = new ForceTupleInputData() { Tuple = tuple, NdmCollection = Ndms };
-            calculator.InputData = inputData;
+            inputData = new();
+            calculator = new() { InputData = inputData };                  
+        }
+        public bool IsSectionFailure(IPoint2D point)
+        {
+            tuple = new()
+            {
+                Nz = point.Y,
+                Mx = point.X,
+                My = My
+            };
+            inputData.Tuple = tuple;
+            inputData.NdmCollection = Ndms;
             calculator.Run();
             var result = calculator.Result;
             return !result.IsValid;
         }
+
+        public bool IsSectionCracked(IPoint2D point)
+        {
+            var logic = new HoleSectionCrackedLogic();
+            tuple = new()
+            {
+                Nz = point.Y,
+                Mx = point.X,
+                My = My
+            };
+            logic.Tuple = tuple;
+            logic.NdmCollection = Ndms;
+            try
+            {
+                var result = logic.IsSectionCracked();
+                return result;
+            }
+            catch (Exception)
+            {
+                return true;
+            }
+        }
     }
 }
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/StabLimitCurveLogic.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/StabLimitCurveLogic.cs
index c259233..3c836af 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/StabLimitCurveLogic.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/StabLimitCurveLogic.cs
@@ -1,4 +1,5 @@
-using StructureHelperCommon.Models.Shapes;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Shapes;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,6 +10,8 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
 {
     public class StabLimitCurveLogic : ILimitCurveLogic
     {
+        public Action<IResult> ActionToOutputResults { get; set; }
+
         public List<IPoint2D> GetPoints(List<IPoint2D> points)
         {
             var result = new List<IPoint2D>();
diff --git a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/SurroundData.cs b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/SurroundData.cs
index bc1ea18..c7204c5 100644
--- a/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/SurroundData.cs
+++ b/StructureHelperLogics/NdmCalculations/Analyses/ByForces/LimitCurve/SurroundData.cs
@@ -12,6 +12,15 @@ namespace StructureHelperLogics.NdmCalculations.Analyses.ByForces
         public double XMin { get; set; }
         public double YMax { get; set; }
         public double YMin { get; set; }
+        public double ConstZ { get; set; }
         public int PointCount { get; set; }
+        public SurroundData()
+        {
+            XMax = 1e7d;
+            XMin = -1e7d;
+            YMax = 1e7d;
+            YMin = -1e7d;
+            PointCount = 80;
+        }
     }
 }
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackForceCalculator.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackForceCalculator.cs
index 2a96eb0..b4889de 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackForceCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackForceCalculator.cs
@@ -30,8 +30,6 @@ namespace StructureHelperLogics.NdmCalculations.Cracking
         public Accuracy Accuracy {get;set; }
         public IResult Result => result;
 
-        public Action<IResult> ActionToOutputResults { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
-
         public CrackForceCalculator(IForceTupleCalculator forceTupleCalculator)
         {
             StartTuple ??= new ForceTuple();
diff --git a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs b/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs
index 170d1b1..cce5d48 100644
--- a/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs
+++ b/StructureHelperLogics/NdmCalculations/Cracking/CrackWidthCalculator.cs
@@ -6,6 +6,7 @@ using StructureHelperCommon.Services.Forces;
 using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
 using StructureHelperLogics.NdmCalculations.Primitives;
 using StructureHelperLogics.NdmCalculations.Triangulations;
+using StructureHelperLogics.Services.NdmPrimitives;
 
 namespace StructureHelperLogics.NdmCalculations.Cracking
 {
@@ -23,8 +24,6 @@ namespace StructureHelperLogics.NdmCalculations.Cracking
         public CrackWidthCalculatorInputData InputData { get; set; }
         public IResult Result => result;
 
-        public Action<IResult> ActionToOutputResults { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
-
         public void Run()
         {
             result = new() { IsValid = true, Description = ""};
@@ -96,10 +95,7 @@ namespace StructureHelperLogics.NdmCalculations.Cracking
                     rebarPrimitives.Add(item as RebarPrimitive);
                 }
             }
-            //rebarPrimitives = ndmPrimitives
-            //    .Select(x => x is RebarPrimitive) as IEnumerable<RebarPrimitive>;
-            var options = new TriangulationOptions() { LimiteState = InputData.LimitState, CalcTerm = InputData.CalcTerm };
-            ndmCollection = ndmPrimitives.SelectMany(x => x.GetNdms(options));
+            ndmCollection = NdmPrimitivesService.GetNdms(ndmPrimitives, InputData.LimitState, InputData.CalcTerm);
         }
 
         private void CalcCrackForce()
diff --git a/StructureHelperLogics/NdmCalculations/Triangulations/Triangulation.cs b/StructureHelperLogics/NdmCalculations/Triangulations/Triangulation.cs
index 03d303b..be3cab4 100644
--- a/StructureHelperLogics/NdmCalculations/Triangulations/Triangulation.cs
+++ b/StructureHelperLogics/NdmCalculations/Triangulations/Triangulation.cs
@@ -8,20 +8,20 @@ namespace StructureHelperLogics.NdmCalculations.Triangulations
 {
     public static class Triangulation1
     {
-        public static IEnumerable<INdm> GetNdms(IEnumerable<INdmPrimitive> ndmPrimitives, ITriangulationOptions options)
-        {
-            return ndmPrimitives.SelectMany(x => x.GetNdms(options));
-            //var headMaterials = GetPrimitiveMaterials(ndmPrimitives);
-            //Dictionary<Guid, IMaterial> materials = GetMaterials(headMaterials, options);
-            //foreach (var ndmPrimitive in ndmPrimitives)
-            //{
-            //    IHeadMaterial headMaterial = ndmPrimitive.HeadMaterial;
-            //    IMaterial material;
-            //    if (materials.TryGetValue(headMaterial.Id, out material) == false) { throw new Exception("Material dictionary is not valid"); }
-            //    IEnumerable<INdm> localNdms = GetNdmsByPrimitive(ndmPrimitive, options);
-            //    ndms.AddRange(localNdms);
-            //}
-        }
+        //public static IEnumerable<INdm> GetNdms(IEnumerable<INdmPrimitive> ndmPrimitives, ITriangulationOptions options)
+        //{
+        //    return ndmPrimitives.SelectMany(x => x.GetNdms(options));
+        //    var headMaterials = GetPrimitiveMaterials(ndmPrimitives);
+        //    Dictionary<Guid, IMaterial> materials = GetMaterials(headMaterials, options);
+        //    foreach (var ndmPrimitive in ndmPrimitives)
+        //    {
+        //        IHeadMaterial headMaterial = ndmPrimitive.HeadMaterial;
+        //        IMaterial material;
+        //        if (materials.TryGetValue(headMaterial.Id, out material) == false) { throw new Exception("Material dictionary is not valid"); }
+        //        IEnumerable<INdm> localNdms = GetNdmsByPrimitive(ndmPrimitive, options);
+        //        ndms.AddRange(localNdms);
+        //    }
+        //}
         /// <summary>
         /// Returns dictionary of unique materials by collection of primitives
         /// </summary>
diff --git a/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs b/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs
index b9b290d..481de12 100644
--- a/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs
+++ b/StructureHelperLogics/Services/NdmCalculations/CalculationService.cs
@@ -14,6 +14,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using StructureHelperCommon.Infrastructures.Enums;
 using StructureHelperLogics.NdmCalculations.Primitives;
+using StructureHelperLogics.Services.NdmPrimitives;
 
 namespace StructureHelperLogics.Services.NdmCalculations
 {
@@ -24,8 +25,7 @@ namespace StructureHelperLogics.Services.NdmCalculations
         public IStrainMatrix GetPrimitiveStrainMatrix(INdmPrimitive[] ndmPrimitives, double mx, double my, double nz)
         {
             var ndmCollection = new List<INdm>();
-            ITriangulationOptions options = new TriangulationOptions { LimiteState = calculationProperty.LimitState, CalcTerm = calculationProperty.CalcTerm };
-            ndmCollection.AddRange(ndmPrimitives.SelectMany(x => x.GetNdms(options)));
+            ndmCollection.AddRange(NdmPrimitivesService.GetNdms(ndmPrimitives, calculationProperty.LimitState, calculationProperty.CalcTerm));
             var loaderData = new LoaderOptions
             {
                 Preconditions = new Preconditions
diff --git a/StructureHelperLogics/StructureHelperLogics.csproj b/StructureHelperLogics/StructureHelperLogics.csproj
index 63a39ca..c221750 100644
--- a/StructureHelperLogics/StructureHelperLogics.csproj
+++ b/StructureHelperLogics/StructureHelperLogics.csproj
@@ -16,8 +16,4 @@
     </Reference>
   </ItemGroup>
 
-  <ItemGroup>
-    <Folder Include="NdmCalculations\Analyses\Interaction\" />
-  </ItemGroup>
-
 </Project>
diff --git a/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs b/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs
index 04d7fe1..41ba585 100644
--- a/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs
+++ b/StructureHelperTests/FunctionalTests/Ndms/Calculators/CrackCalculatorTests/CrackCalculatorTest.cs
@@ -11,6 +11,7 @@ using StructureHelperLogics.NdmCalculations.Analyses.ByForces;
 using StructureHelperLogics.NdmCalculations.Cracking;
 using StructureHelperLogics.NdmCalculations.Primitives;
 using StructureHelperLogics.NdmCalculations.Triangulations;
+using StructureHelperLogics.Services.NdmPrimitives;
 
 namespace StructureHelperTests.FunctionalTests.Ndms.Calculators.CrackCalculatorTests
 
@@ -24,8 +25,7 @@ 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;
-            ITriangulationOptions options = new TriangulationOptions { LimiteState = LimitStates.SLS, CalcTerm = CalcTerms.ShortTerm };
-            var ndms = ndmPrimitives.SelectMany(x => x.GetNdms(options));
+            var ndms = NdmPrimitivesService.GetNdms(ndmPrimitives, LimitStates.SLS, CalcTerms.ShortTerm);
             var calculator = new CrackForceCalculator();
             calculator.EndTuple = new ForceTuple() { Mx = -50e3d, My = -50e3d, Nz = 0d };
             calculator.NdmCollection = ndms;
diff --git a/StructureHelperTests/UnitTests/Calcuators/LimitCurveCalculatorTest.cs b/StructureHelperTests/UnitTests/Calcuators/LimitCurveCalculatorTest.cs
index 4349bbc..62fa90f 100644
--- a/StructureHelperTests/UnitTests/Calcuators/LimitCurveCalculatorTest.cs
+++ b/StructureHelperTests/UnitTests/Calcuators/LimitCurveCalculatorTest.cs
@@ -16,6 +16,10 @@ namespace StructureHelperTests.UnitTests.Calcuators
             var calculator = new LimitCurveCalculator(new StabLimitCurveLogic())
             {
             };
+            calculator.SurroundData.XMax = xmax;
+            calculator.SurroundData.XMin = -xmax;
+            calculator.SurroundData.YMax = ymax;
+            calculator.SurroundData.YMin = -ymax;
             //Act
             calculator.Run();
             var result = calculator.Result;
diff --git a/StructureHelperTests/UnitTests/Calcuators/LimitCurveLogicTest.cs b/StructureHelperTests/UnitTests/Calcuators/LimitCurveLogicTest.cs
index f8ff746..9430a33 100644
--- a/StructureHelperTests/UnitTests/Calcuators/LimitCurveLogicTest.cs
+++ b/StructureHelperTests/UnitTests/Calcuators/LimitCurveLogicTest.cs
@@ -17,7 +17,7 @@ namespace StructureHelperTests.UnitTests.Calcuators
             parameterLogicMock.Setup(p => p.GetParameter()).Returns(2.0); // Mocking the GetParameter method
 
             var limitCurveLogic = new LimitCurveLogic(parameterLogicMock.Object);
-            limitCurveLogic.LimitPredicate = point => point.X <= 0.5d; // Example predicate
+            limitCurveLogic.LimitPredicate = point => point.X >= 0.5d; // Example predicate
 
             var inputPoints = new List<IPoint2D>
         {
@@ -51,7 +51,7 @@ namespace StructureHelperTests.UnitTests.Calcuators
             parameterLogicMock.Setup(p => p.GetParameter()).Returns(2.0);
 
             var limitCurveLogic = new LimitCurveLogic(parameterLogicMock.Object);
-            limitCurveLogic.LimitPredicate = point => false; // Invalid predicate
+            limitCurveLogic.LimitPredicate = point => true; // Invalid predicate
 
             var inputPoints = new List<IPoint2D>
         {