diff --git a/DataAccess/DTOs/DTOEntities/Forces/ForceCombinationFromFileDTO.cs b/DataAccess/DTOs/DTOEntities/Forces/ForceCombinationFromFileDTO.cs
index 093c66a..f6346bd 100644
--- a/DataAccess/DTOs/DTOEntities/Forces/ForceCombinationFromFileDTO.cs
+++ b/DataAccess/DTOs/DTOEntities/Forces/ForceCombinationFromFileDTO.cs
@@ -18,7 +18,9 @@ namespace DataAccess.DTOs
         public bool SetInGravityCenter { get; set; }
         [JsonProperty("ForcePoint")]
         public IPoint2D ForcePoint { get; set; } = new Point2DDTO();
-        
+        [JsonProperty("SkipWrongRows")]
+        public bool SkipWrongRows { get; set; } = false;
+
         public ForceCombinationFromFileDTO(Guid id)
         {
             Id = id;
diff --git a/StructureHelper/Documentation/Verification/Materials.shpj b/StructureHelper/Documentation/Verification/Materials.shpj
index 64de14e..b93f81c 100644
--- a/StructureHelper/Documentation/Verification/Materials.shpj
+++ b/StructureHelper/Documentation/Verification/Materials.shpj
@@ -2,7 +2,7 @@
   "$id": "1",
   "$type": "RootObject",
   "FileVersion": {
-    "Id": "0e4e721a-1df3-4693-999d-3670b14f7113",
+    "Id": "f5247ddd-f79f-4943-9e09-764e2a47d0d3",
     "VersionNumber": 1,
     "SubVersionNumber": 4
   },
@@ -20,7 +20,7 @@
             "$id": "4",
             "$type": "CrossSectionNdmAnalysis",
             "Id": "4027079c-d866-4266-b15e-e2a59bb69bfa",
-            "Name": "New NDM Analysis",
+            "Name": "Materials",
             "Tags": "#New group",
             "VersionProcessor": {
               "$id": "5",
@@ -1579,6 +1579,158 @@
                                 "TensionForSLS": true,
                                 "MaterialLogicId": "b97e8168-76a1-4e24-ae98-9aa38edd1e9a"
                               }
+                            },
+                            {
+                              "$id": "165",
+                              "$type": "HeadMaterial",
+                              "Id": "a975c01f-2028-4aa7-93b1-0ef1cfc73580",
+                              "Name": "A240",
+                              "Color": "#FF6ACF46",
+                              "HelperMaterial": {
+                                "$id": "166",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "6ec6f688-21ea-4d7a-83a0-66ec7d2ef268",
+                                "MaterialEntityId": "c47ebbd7-2e0c-4247-81b6-dc3fbd064bab",
+                                "SafetyFactors": {
+                                  "$id": "167",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "168",
+                              "$type": "HeadMaterial",
+                              "Id": "257fe163-585d-4f7a-a96a-3634e9b6861e",
+                              "Name": "A400",
+                              "Color": "#FF61881E",
+                              "HelperMaterial": {
+                                "$id": "169",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "a0547d68-4b5a-42c6-bf20-cc1f9caa8157",
+                                "MaterialEntityId": "ea422282-3465-433c-9b93-c5bbfba5a904",
+                                "SafetyFactors": {
+                                  "$id": "170",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "171",
+                              "$type": "HeadMaterial",
+                              "Id": "d5dd42c1-372f-4217-a85f-e3eaaa753b6c",
+                              "Name": "A500",
+                              "Color": "#FFECAA46",
+                              "HelperMaterial": {
+                                "$id": "172",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "ca7ce2f8-7bbc-4379-8166-8fc7a4adefc0",
+                                "MaterialEntityId": "045b54b1-0bbf-41fd-a27d-aeb20f600bb4",
+                                "SafetyFactors": {
+                                  "$id": "173",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "174",
+                              "$type": "HeadMaterial",
+                              "Id": "e4245f23-f51a-4ed1-a4e5-5f7133028a27",
+                              "Name": "A600",
+                              "Color": "#FF3B68D7",
+                              "HelperMaterial": {
+                                "$id": "175",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "4479ec6e-8cf6-48ec-94b7-8645f6aa7ac5",
+                                "MaterialEntityId": "e3cfc6fb-fbd0-47dd-ab4a-79c030704acf",
+                                "SafetyFactors": {
+                                  "$id": "176",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "177",
+                              "$type": "HeadMaterial",
+                              "Id": "14b73c38-249d-4c0f-afcc-a1b2ef7268f3",
+                              "Name": "A800",
+                              "Color": "#FFCA9F48",
+                              "HelperMaterial": {
+                                "$id": "178",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "b626d13f-f754-411e-8092-1e92e9a27161",
+                                "MaterialEntityId": "6f0882ef-53bf-464e-acf7-da421a43a825",
+                                "SafetyFactors": {
+                                  "$id": "179",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "180",
+                              "$type": "HeadMaterial",
+                              "Id": "bab99d80-6773-492c-ad88-1ad8cb948d58",
+                              "Name": "A1000",
+                              "Color": "#FFF5812A",
+                              "HelperMaterial": {
+                                "$id": "181",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "b05e32ce-38ae-44f2-bb2c-428d92876544",
+                                "MaterialEntityId": "509fbaae-a3de-43c2-aae6-33387908dc43",
+                                "SafetyFactors": {
+                                  "$id": "182",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "183",
+                              "$type": "HeadMaterial",
+                              "Id": "31b4492a-bfe7-4fcf-8f1d-b2f3df11e837",
+                              "Name": "K1400",
+                              "Color": "#FFF150B3",
+                              "HelperMaterial": {
+                                "$id": "184",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "0693f06e-f1c6-4e00-acfc-11047344052a",
+                                "MaterialEntityId": "1b44e9eb-d19d-4fd5-9755-33ae01683dc1",
+                                "SafetyFactors": {
+                                  "$id": "185",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
+                            },
+                            {
+                              "$id": "186",
+                              "$type": "HeadMaterial",
+                              "Id": "1c1a7ca3-aae7-4ca8-b5bd-dea1b9753e12",
+                              "Name": "K1500",
+                              "Color": "#FFC98453",
+                              "HelperMaterial": {
+                                "$id": "187",
+                                "$type": "ReinforcementLibMaterial",
+                                "Id": "6a3ac6d5-7c5c-42d5-a49e-66e267e8cbd2",
+                                "MaterialEntityId": "93c48a27-ab37-4bd2-aeb8-2a7247e74a1b",
+                                "SafetyFactors": {
+                                  "$id": "188",
+                                  "$type": "ListOfMaterialSafetyFactor",
+                                  "$values": []
+                                },
+                                "MaterialLogicId": "54c4fe40-8f82-4995-8930-81e65e97edb9"
+                              }
                             }
                           ]
                         },
@@ -1596,7 +1748,7 @@
                         }
                       },
                       "WorkPlaneProperty": {
-                        "$id": "165",
+                        "$id": "189",
                         "$type": "WorkPlanePropertyDTO",
                         "Id": "31ec91ea-d0bc-4426-9ca4-e22e17889457",
                         "GridSize": 0.05,
diff --git a/StructureHelper/Infrastructure/UI/DataContexts/CircleViewPrimitive.cs b/StructureHelper/Infrastructure/UI/DataContexts/CircleViewPrimitive.cs
index 06dfd3b..ad957d9 100644
--- a/StructureHelper/Infrastructure/UI/DataContexts/CircleViewPrimitive.cs
+++ b/StructureHelper/Infrastructure/UI/DataContexts/CircleViewPrimitive.cs
@@ -31,6 +31,7 @@ namespace StructureHelper.Infrastructure.UI.DataContexts
 
         public CircleViewPrimitive(IEllipseNdmPrimitive primitive) : base(primitive)
         {
+            this.primitive = primitive;
             DivisionViewModel = new HasDivisionViewModel(primitive.DivisionSize);
         }
 
diff --git a/StructureHelper/Libraries/LoaderCalculator.dll b/StructureHelper/Libraries/LoaderCalculator.dll
index 9e66def..383d1f5 100644
Binary files a/StructureHelper/Libraries/LoaderCalculator.dll and b/StructureHelper/Libraries/LoaderCalculator.dll differ
diff --git a/StructureHelper/Windows/Forces/ForceCombinationByFactorVM.cs b/StructureHelper/Windows/Forces/ForceCombinationByFactorVM.cs
index aba7a37..cd31158 100644
--- a/StructureHelper/Windows/Forces/ForceCombinationByFactorVM.cs
+++ b/StructureHelper/Windows/Forces/ForceCombinationByFactorVM.cs
@@ -19,7 +19,8 @@ namespace StructureHelper.Windows.Forces
         public ForceTupleVM ForceTupleVM => forceTupleVM;
         public FactoredCombinationPropertyVM CombinationProperty
         {
-            get => combinationProperty; set
+            get => combinationProperty;
+            set
             {
                 combinationProperty = value;
                 OnPropertyChanged(nameof(CombinationProperty));
diff --git a/StructureHelper/Windows/Forces/ForceCombinationFromFileVM.cs b/StructureHelper/Windows/Forces/ForceCombinationFromFileVM.cs
index ef5fc62..bef535c 100644
--- a/StructureHelper/Windows/Forces/ForceCombinationFromFileVM.cs
+++ b/StructureHelper/Windows/Forces/ForceCombinationFromFileVM.cs
@@ -1,4 +1,6 @@
-using StructureHelper.Windows.ViewModels;
+using StructureHelper.Infrastructure;
+using StructureHelper.Windows.ViewModels;
+using StructureHelper.Windows.ViewModels.Errors;
 using StructureHelper.Windows.ViewModels.Forces;
 using StructureHelperCommon.Models.Forces;
 using System;
@@ -6,6 +8,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Input;
 
 namespace StructureHelper.Windows.Forces
 {
@@ -14,16 +17,44 @@ namespace StructureHelper.Windows.Forces
         private readonly IForceCombinationFromFile model;
         private ListOfFilesVM files;
         private FactoredCombinationPropertyVM combinationProperty;
+        private RelayCommand showCombinationViewerCommand;
 
         public FactoredCombinationPropertyVM CombinationProperty
         {
-            get => combinationProperty; set
+            get => combinationProperty;
+            set
             {
                 combinationProperty = value;
                 OnPropertyChanged(nameof(CombinationProperty));
             }
         }
 
+        public bool SkipWrongRows
+        {
+            get
+            {
+                return model.SkipWrongRows;
+            }
+
+            set
+            {
+                model.SkipWrongRows = value;
+                OnPropertyChanged(nameof(SkipWrongRows));
+            }
+        }
+
+        public ICommand ShowCombinationViewerCommand
+        {
+            get => showCombinationViewerCommand ??= new RelayCommand(
+                o =>SafetyProcessor.RunSafeProcess(ShowCombinationViewer, "Combination viewer"));
+        }
+
+        private void ShowCombinationViewer()
+        {
+            var wnd = new ForceCombinationViewerView(model);
+            wnd.ShowDialog();
+        }
+
         public ListOfFilesVM Files
         {
             get => files; set
diff --git a/StructureHelper/Windows/Forces/ForceCombinationFromFileView.xaml b/StructureHelper/Windows/Forces/ForceCombinationFromFileView.xaml
index 70fb2d1..8412d4a 100644
--- a/StructureHelper/Windows/Forces/ForceCombinationFromFileView.xaml
+++ b/StructureHelper/Windows/Forces/ForceCombinationFromFileView.xaml
@@ -7,7 +7,7 @@
         xmlns:uc="clr-namespace:StructureHelper.Windows.UserControls"
         d:DataContext="{d:DesignInstance local:ForceCombinationFromFileVM}"
         mc:Ignorable="d"
-        Title="Force Combination By Files" Height="330" Width="350" WindowStartupLocation="CenterScreen" ResizeMode="NoResize">
+        Title="Force Combination By Files" Height="380" Width="350" WindowStartupLocation="CenterScreen" ResizeMode="NoResize">
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition/>
@@ -18,6 +18,8 @@
                 <StackPanel>
                     <!--ForceTemplates.xaml-->
                     <ContentControl ContentTemplate="{StaticResource ResourceKey=ForceActionNameTemplate}" Content="{Binding}"/>
+                    <CheckBox Content="Skip wrong rows" Margin="4" IsChecked="{Binding SkipWrongRows}"/>
+                    <Button Content="Show combination" Margin="4" Command="{Binding ShowCombinationViewerCommand}"/>
                     <TextBlock Text="List of Files"/>
                     <Grid>
                         <uc:ListOfFileControl Height="130" DataContext="{Binding Files}"/>
diff --git a/StructureHelper/Windows/Forces/ForceCombinationViewerVM.cs b/StructureHelper/Windows/Forces/ForceCombinationViewerVM.cs
index 38b9382..caa3f3f 100644
--- a/StructureHelper/Windows/Forces/ForceCombinationViewerVM.cs
+++ b/StructureHelper/Windows/Forces/ForceCombinationViewerVM.cs
@@ -1,22 +1,68 @@
 using StructureHelper.Infrastructure;
+using StructureHelper.Windows.ViewModels.Errors;
+using StructureHelperCommon.Infrastructures.Enums;
 using StructureHelperCommon.Models.Forces;
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Input;
 
 namespace StructureHelper.Windows.Forces
 {
     public class ForceCombinationViewerVM : ViewModelBase
     {
         private IForceAction model;
+        private LimitStates limitState = LimitStates.ULS;
+        private CalcTerms calcTerm = CalcTerms.ShortTerm;
+        private RelayCommand refreshCommand;
 
-        public List<IForceCombinationList> Combinations => model.GetCombinations();
+        public List<LimitStates> LimitStateList { get; set; } = [LimitStates.ULS, LimitStates.SLS];
+        public List<CalcTerms> CalcTermList { get; set; } = [CalcTerms.LongTerm, CalcTerms.ShortTerm];
+        public LimitStates LimitState
+        {
+            get => limitState;
+            set
+            {
+                limitState = value;
+                OnPropertyChanged(nameof(limitState));
+            }
+        }
+
+        private void Refresh()
+        {
+            Combinations.Clear();
+            var combinations = model.GetCombinations();
+            foreach (var combination in combinations)
+            {
+                var combinationList = combination.DesignForces.Where(x => x.LimitState == limitState && x.CalcTerm == calcTerm).ToList();
+                combinationList.ForEach(x => Combinations.Add(x));
+            }
+        }
+
+        public CalcTerms CalcTerm
+        {
+            get => calcTerm;
+            set
+            {
+                calcTerm = value;
+                OnPropertyChanged(nameof (calcTerm));
+            }
+        }
+
+        public ICommand RefreshCommand =>
+            refreshCommand ??=
+            new RelayCommand(o => SafetyProcessor.RunSafeProcess(Refresh, "Refresh combination errror"));
+
+        public ObservableCollection<IDesignForceTuple> Combinations { get; } = [];
 
         public ForceCombinationViewerVM(IForceAction model)
         {
             this.model = model;
+            Refresh();
         }
     }
 }
diff --git a/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml b/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml
index 666ec2d..1ed4c21 100644
--- a/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml
+++ b/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml
@@ -4,9 +4,37 @@
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:StructureHelper.Windows.Forces"
+        xmlns:uc="clr-namespace:StructureHelper.Windows.UserControls"
+        d:DataContext="{d:DesignInstance local:ForceCombinationViewerVM}"
         mc:Ignorable="d"
-        Title="Force Combination Viewer" Height="250" Width="400" MinHeight="250" MinWidth="400" MaxHeight="600" MaxWidth="1000" ResizeMode="CanResize" WindowStartupLocation="CenterScreen">
-    <Grid>
-        <ContentControl Grid.Row="1" ContentTemplate="{StaticResource ResourceKey=CombinationListTemplate}" Content="{Binding}"/>
-    </Grid>
+        Title="Force Combination Viewer" Height="450" Width="550" MinHeight="450" MinWidth="400" MaxHeight="800" MaxWidth="1000" ResizeMode="CanResize" WindowStartupLocation="CenterScreen">
+    <DockPanel>
+        <ToolBarTray DockPanel.Dock="Top">
+            <ToolBar>
+                <Button Style="{StaticResource ToolButton}" Command="{Binding RefreshCommand}">
+                    <Button.ToolTip>
+                        <uc:ButtonToolTipEh HeaderText="Refresh combination"
+                                IconContent="{StaticResource Renew}"
+                                DescriptionText="Refreshes combination according to selected filters"/>
+                    </Button.ToolTip>
+                    <Viewbox>
+                        <ContentControl ContentTemplate="{StaticResource Renew}"/>
+                    </Viewbox>
+                </Button>
+                <ComboBox Grid.Row="0" Grid.Column="1" ItemsSource="{Binding LimitStateList}" SelectedItem="{Binding LimitState}" Width="100"/>
+                <ComboBox Grid.Row="1" Grid.Column="1" ItemsSource="{Binding CalcTermList}" SelectedItem="{Binding CalcTerm}" Width="100"/>
+            </ToolBar>
+        </ToolBarTray>
+        <Grid>
+            <DataGrid x:Name="ForceGrid" Style="{StaticResource ItemsDataGrid}" ItemsSource="{Binding Combinations}">
+                <DataGrid.Columns>
+                    <DataGridTextColumn Header="Limit state" Width="80" MinWidth="70" Binding="{Binding LimitState}"/>
+                    <DataGridTextColumn Header="Duration" Width="80" MinWidth="70" Binding="{Binding CalcTerm}"/>
+                    <DataGridTextColumn Header="Moment Mx" Width="100" Binding="{Binding ForceTuple.Mx, Converter={StaticResource MomentConverter}, ValidatesOnExceptions=True}"/>
+                    <DataGridTextColumn Header="Moment My" Width="100" Binding="{Binding ForceTuple.My, Converter={StaticResource MomentConverter}, ValidatesOnExceptions=True}"/>
+                    <DataGridTextColumn Header="Force Nz" Width="100" Binding="{Binding ForceTuple.Nz, Converter={StaticResource ForceConverter}, ValidatesOnExceptions=True}"/>
+                </DataGrid.Columns>
+            </DataGrid>
+        </Grid>
+    </DockPanel>
 </Window>
diff --git a/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml.cs b/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml.cs
index 8fd138b..0c27a4a 100644
--- a/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml.cs
+++ b/StructureHelper/Windows/Forces/ForceCombinationViewerView.xaml.cs
@@ -1,17 +1,5 @@
 using StructureHelperCommon.Models.Forces;
-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.Forces
 {
diff --git a/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs b/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs
index 23403cb..fcae488 100644
--- a/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs
+++ b/StructureHelper/Windows/Graphs/MaterialDiagramViewModel.cs
@@ -206,7 +206,7 @@ namespace StructureHelper.Windows.Graphs
                         for (double s = minValue; s < maxValue; s += step)
                         {
                             double strain = s * factor;
-                            double diagramValue = loaderMaterial.Diagram.Invoke(loaderMaterial.DiagramParameters, strain) * factor;
+                            double diagramValue = loaderMaterial.Diagram.Invoke(strain) * factor;
                             StressEntity stressEntity = new()
                             {
                                 LimitState = limitState,
@@ -255,11 +255,12 @@ namespace StructureHelper.Windows.Graphs
                             GraphService.SetVisualProps(lineSeries, VisualProps);
                         }
                         var chartValues = new ChartValues<double>();
-                        for (double s = minValue; s < maxValue; s += step)
+                        for (double strain = minValue; strain < maxValue; strain += step)
                         {
-                            double diagramValue = Math.Round(loaderMaterial.Diagram.Invoke(loaderMaterial.DiagramParameters, s * factor)) * factor * UnitConstants.Stress;
+                            double factoredStrain = strain * factor;
+                            double diagramValue = Math.Round(loaderMaterial.Diagram.Invoke(factoredStrain)) * factor * UnitConstants.Stress;
                             chartValues.Add(diagramValue);
-                            labels.Add(Convert.ToString(Math.Round(s, 4)));
+                            labels.Add(Convert.ToString(Math.Round(strain, 4)));
                         }
                         lineSeries.Values = chartValues;
                         SeriesCollection.Add(lineSeries);
diff --git a/StructureHelperCommon/Models/Forces/ColumnedFileProperty.cs b/StructureHelperCommon/Models/Forces/ColumnedFileProperty.cs
index 78e15d2..e64f80f 100644
--- a/StructureHelperCommon/Models/Forces/ColumnedFileProperty.cs
+++ b/StructureHelperCommon/Models/Forces/ColumnedFileProperty.cs
@@ -24,6 +24,7 @@ namespace StructureHelperCommon.Models.Forces
         public double GlobalFactor { get; set; } = 1d;
         /// <inheritdoc/>
         public List<IColumnFileProperty> ColumnProperties { get; } = new();
+        public bool SkipWrongRows { get; set; } = false;
 
         public ColumnedFileProperty(Guid id)
         {
diff --git a/StructureHelperCommon/Models/Forces/ForceCombinationFromFile.cs b/StructureHelperCommon/Models/Forces/ForceCombinationFromFile.cs
index 3beac30..da24bf4 100644
--- a/StructureHelperCommon/Models/Forces/ForceCombinationFromFile.cs
+++ b/StructureHelperCommon/Models/Forces/ForceCombinationFromFile.cs
@@ -35,6 +35,7 @@ namespace StructureHelperCommon.Models.Forces
         public IPoint2D ForcePoint { get; set; } = new Point2D();
 
         public IFactoredCombinationProperty CombinationProperty { get; set; } = new FactoredCombinationProperty(Guid.NewGuid());
+        public bool SkipWrongRows { get; set; } = false;
 
         public object Clone()
         {
@@ -46,7 +47,11 @@ namespace StructureHelperCommon.Models.Forces
 
         public List<IForceCombinationList> GetCombinations()
         {
-            getTupleFromFileLogic ??= new GetTuplesFromFileLogic() { TraceLogger = new ShiftTraceLogger()};
+            getTupleFromFileLogic = new GetTuplesFromFileLogic()
+            {
+                TraceLogger = new ShiftTraceLogger(),
+                SkipWrongRows = SkipWrongRows,
+            };
             factoredCombination = new ForceFactoredList();
             factoredCombination.ForceTuples.Clear();
             propertyUpdateStrategy ??= new FactoredCombinationPropertyUpdateStrategy();
diff --git a/StructureHelperCommon/Models/Forces/IForceCombinationFromFile.cs b/StructureHelperCommon/Models/Forces/IForceCombinationFromFile.cs
index db61825..9a3a4b6 100644
--- a/StructureHelperCommon/Models/Forces/IForceCombinationFromFile.cs
+++ b/StructureHelperCommon/Models/Forces/IForceCombinationFromFile.cs
@@ -15,5 +15,6 @@ namespace StructureHelperCommon.Models.Forces
         /// List of file properties for import combination
         /// </summary>
         List<IColumnedFileProperty> ForceFiles { get; set; }
+        bool SkipWrongRows { get; set; }
     }
 }
diff --git a/StructureHelperCommon/Models/Forces/Logics/ForceCombinationFromFileUpdateStrategy.cs b/StructureHelperCommon/Models/Forces/Logics/ForceCombinationFromFileUpdateStrategy.cs
index e265699..5707d83 100644
--- a/StructureHelperCommon/Models/Forces/Logics/ForceCombinationFromFileUpdateStrategy.cs
+++ b/StructureHelperCommon/Models/Forces/Logics/ForceCombinationFromFileUpdateStrategy.cs
@@ -35,6 +35,7 @@ namespace StructureHelperCommon.Models.Forces
             if (ReferenceEquals(targetObject, sourceObject)) { return; }
             InitializeLogics();
             baseUpdateStrategy.Update(targetObject, sourceObject);
+            targetObject.SkipWrongRows = sourceObject.SkipWrongRows;
             CheckObject.IsNull(targetObject.CombinationProperty, "Target object combination property");
             CheckObject.IsNull(sourceObject.CombinationProperty, "Source object combination property");
             combinationPropertyUpdateStrategy.Update(targetObject.CombinationProperty, sourceObject.CombinationProperty);
diff --git a/StructureHelperCommon/Models/Forces/Logics/GetTupleByExcelReaderLogic.cs b/StructureHelperCommon/Models/Forces/Logics/GetTupleByExcelReaderLogic.cs
index 2c556b5..86e15a4 100644
--- a/StructureHelperCommon/Models/Forces/Logics/GetTupleByExcelReaderLogic.cs
+++ b/StructureHelperCommon/Models/Forces/Logics/GetTupleByExcelReaderLogic.cs
@@ -24,6 +24,7 @@ namespace StructureHelperCommon.Models.Forces
 
         public IShiftTraceLogger? TraceLogger { get; set; }
         public IColumnedFileProperty ForceFileProperty { get; set; }
+        public bool SkipWrongRows { get; internal set; }
 
         public IForceTuple GetForceTuple(IExcelDataReader? reader)
         {
@@ -38,10 +39,24 @@ namespace StructureHelperCommon.Models.Forces
                     throw new StructureHelperException(ErrorStrings.NullReference + $": reader value for column {item.Name} in file {ForceFileProperty.FilePath}");
                 }
                 var readerValue = reader.GetValue(item.Index);
+                if (readerValue is null)
+                {
+                    if (SkipWrongRows == true)
+                    {
+                        continue;
+                    }
+                    else
+                    {
+                        throw new StructureHelperException(ErrorStrings.NullReference + $": wrong row in file {ForceFileProperty.FilePath}, total row number n = {reader.RowCount}");
+                    }
+                }
                 var strValue = readerValue.ToString();
                 double factor = ForceFileProperty.GlobalFactor * item.Factor * 1000d;
                 var doubleValue = Convert.ToDouble(strValue) * factor;
-                fillArrayLogic ??= new FillTupleArrayByColumnNameLogic() { TraceLogger = TraceLogger };
+                fillArrayLogic ??= new FillTupleArrayByColumnNameLogic()
+                {
+                    TraceLogger = TraceLogger
+                };
                 fillArrayLogic.ProceeForceTupleArray(nDouble, doubleValue, item.Name, ForceFileProperty.FilePath);
             }
             TraceLogger?.AddMessage($"String values: Nz = {nDouble[0]}, Mx = {nDouble[1]}, My = {nDouble[2]} were gained", TraceLogStatuses.Debug);
diff --git a/StructureHelperCommon/Models/Forces/Logics/GetTuplesFromFileLogic.cs b/StructureHelperCommon/Models/Forces/Logics/GetTuplesFromFileLogic.cs
index e89b8b4..9a65496 100644
--- a/StructureHelperCommon/Models/Forces/Logics/GetTuplesFromFileLogic.cs
+++ b/StructureHelperCommon/Models/Forces/Logics/GetTuplesFromFileLogic.cs
@@ -4,6 +4,7 @@ using StructureHelperCommon.Infrastructures.Interfaces;
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Text;
 
 
@@ -35,6 +36,7 @@ namespace StructureHelperCommon.Models.Forces
 
         public IColumnedFileProperty ForceFileProperty { get; set; }
         public IShiftTraceLogger? TraceLogger { get; set; }
+        public bool SkipWrongRows { get; set; } = false;
 
         public List<IForceTuple> GetTuples()
         {
@@ -56,7 +58,7 @@ namespace StructureHelperCommon.Models.Forces
                 // Create an Excel reader
                 using (var reader = ExcelReaderFactory.CreateReader(stream))
                 {
-                    // Skip the first two header rows if necessary (adjust based on structure)
+                    // Skip the first header rows if necessary (adjust based on structure)
                     for (int i = 0; i < skipRows; i++)
                     {
                         reader.Read(); // Skip  row
@@ -65,7 +67,8 @@ namespace StructureHelperCommon.Models.Forces
                     excelReaderLogic ??= new GetTupleByExcelReaderLogic()
                     {
                         ForceFileProperty = ForceFileProperty,
-                        TraceLogger = TraceLogger
+                        TraceLogger = TraceLogger,
+                        SkipWrongRows = SkipWrongRows
                     };
 
                     // Loop through the rows
@@ -74,11 +77,13 @@ namespace StructureHelperCommon.Models.Forces
                         try
                         {
                             IForceTuple newTuple = excelReaderLogic.GetForceTuple(reader);
-                            result.Add(newTuple);
+                            if (! result.Any(x => x.Mx == newTuple.Mx && x.My == newTuple.My && x.Nz == newTuple.Nz))
+                            {
+                                result.Add(newTuple);
+                            }
                         }
                         catch (Exception ex)
                         {
-                            //to do implement case when file has a data in the row, but thus date is not correct
                             string errorString = ErrorStrings.DataIsInCorrect + $": incorrect data in file {ForceFileProperty.FilePath}, " + ex.Message;
                             TraceLogger?.AddMessage(errorString, TraceLogStatuses.Error);
                             throw new StructureHelperException(errorString);
diff --git a/StructureHelperCommon/Models/Forces/Logics/IGetTuplesFromFileLogic.cs b/StructureHelperCommon/Models/Forces/Logics/IGetTuplesFromFileLogic.cs
index 3b5d60e..85b3717 100644
--- a/StructureHelperCommon/Models/Forces/Logics/IGetTuplesFromFileLogic.cs
+++ b/StructureHelperCommon/Models/Forces/Logics/IGetTuplesFromFileLogic.cs
@@ -5,6 +5,7 @@ namespace StructureHelperCommon.Models.Forces
 {
     public interface IGetTuplesFromFileLogic : ILogic
     {
+        bool SkipWrongRows { get; set; }
         IColumnedFileProperty ForceFileProperty { get; set; }
 
         List<IForceTuple> GetTuples();
diff --git a/StructureHelperLogics/MaterialBuilders/Decorators/RestrictStrainDecorator.cs b/StructureHelperLogics/MaterialBuilders/Decorators/RestrictStrainDecorator.cs
index b225503..0c0ac1f 100644
--- a/StructureHelperLogics/MaterialBuilders/Decorators/RestrictStrainDecorator.cs
+++ b/StructureHelperLogics/MaterialBuilders/Decorators/RestrictStrainDecorator.cs
@@ -12,6 +12,9 @@ namespace StructureHelperLogics.MaterialBuilders
     internal class RestrictStrainDecorator : IMaterialBuilder
     {
         IMaterialBuilder builder;
+        private double maxTensileStrain;
+        private double maxCompressionStrain;
+
         public IMaterialOption MaterialOption { get; set; }
 
         public RestrictStrainDecorator(IMaterialBuilder builder)
@@ -25,11 +28,8 @@ namespace StructureHelperLogics.MaterialBuilders
             var option = (RestrictStrainOption)MaterialOption;
             var material = new Material();
             material.InitModulus = builder.GetMaterial().InitModulus;
-            material.DiagramParameters = new List<double>()
-            {
-                option.MaxTensileStrain,
-                option.MaxCompessionStrain
-            };
+            maxTensileStrain = option.MaxTensileStrain;
+            maxCompressionStrain = option.MaxCompessionStrain;
             material.Diagram = GetStressDiagram;
             return material;
         }
@@ -39,10 +39,9 @@ namespace StructureHelperLogics.MaterialBuilders
             CheckObject.CompareTypes(typeof(RestrictStrainOption), MaterialOption.GetType());
         }
 
-        private double GetStressDiagram(IEnumerable<double> parameters, double strain)
+        private double GetStressDiagram(double strain)
         {
-            var maxTensileStrain = parameters.ToList()[0];
-            var maxCompressionStrain = parameters.ToList()[1];
+
             if (strain > maxTensileStrain || strain < maxCompressionStrain)
             {
                 return 0d;
@@ -50,7 +49,7 @@ namespace StructureHelperLogics.MaterialBuilders
             else
             {
                 var material = builder.GetMaterial();
-                return material.Diagram.Invoke(parameters, strain);
+                return material.Diagram.Invoke(strain);
             }
         }
     }
diff --git a/StructureHelperLogics/Models/Materials/Logics/ElasticMaterialLogic.cs b/StructureHelperLogics/Models/Materials/Logics/ElasticMaterialLogic.cs
index 15b8448..b8d3368 100644
--- a/StructureHelperLogics/Models/Materials/Logics/ElasticMaterialLogic.cs
+++ b/StructureHelperLogics/Models/Materials/Logics/ElasticMaterialLogic.cs
@@ -7,12 +7,15 @@ using System.Linq;
 using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
 
 namespace StructureHelperLogics.Models.Materials
 {
     internal class ElasticMaterialLogic : IElasticMaterialLogic
     {
-        private List<double> parameters;
+        private double modulusOfElasticity;
+        private double compressiveStrength;
+        private double tensileStrength;
 
         public IMaterial GetLoaderMaterial(IElasticMaterial elasticMaterial, LimitStates limitState, CalcTerms calcTerm, double factor = 1d)
         { 
@@ -20,23 +23,16 @@ namespace StructureHelperLogics.Models.Materials
             material.InitModulus = elasticMaterial.Modulus;
             IMaterialFactorLogic factorLogic = new MaterialFactorLogic(elasticMaterial.SafetyFactors);
             var factors = factorLogic.GetTotalFactor(limitState, calcTerm);
-            parameters = new List<double>()
-            {
-                elasticMaterial.Modulus,
-                elasticMaterial.CompressiveStrength * factors.Compressive * factor,
-                elasticMaterial.TensileStrength * factors.Tensile * factor
-            };
-        material.DiagramParameters = parameters;
-        material.Diagram = GetStressByStrain;
-        return material;
+            modulusOfElasticity = elasticMaterial.Modulus;
+            compressiveStrength = (-1d) * elasticMaterial.CompressiveStrength * factors.Compressive * factor;
+            tensileStrength = elasticMaterial.TensileStrength * factors.Tensile * factor;
+            material.Diagram = GetStressByStrain;
+            return material;
         }
 
-    private double GetStressByStrain(IEnumerable<double> parameters1, double strain)
+    private double GetStressByStrain(double strain)
     {
-        double modulus = parameters.First();
-        double stress = modulus * strain;
-        double compressiveStrength = (-1d) * parameters.ElementAt(1);
-        double tensileStrength = parameters.ElementAt(2);
+        double stress = modulusOfElasticity * strain;
         if (stress > tensileStrength || stress < compressiveStrength) { return 0d; }
         else { return stress; }
     }
diff --git a/StructureHelperLogics/Services/NdmPrimitives/MeshElasticLogic.cs b/StructureHelperLogics/Services/NdmPrimitives/MeshElasticLogic.cs
index 77bda68..9d092a6 100644
--- a/StructureHelperLogics/Services/NdmPrimitives/MeshElasticLogic.cs
+++ b/StructureHelperLogics/Services/NdmPrimitives/MeshElasticLogic.cs
@@ -37,9 +37,9 @@ namespace StructureHelperLogics.Services.NdmPrimitives
             {
                 var material = ndm.Material;
                 var materialFunc = material.Diagram;
-                var newMaterialFunc = (IEnumerable<double> parameters, double strain) => strain * material.InitModulus;
+                var newMaterialFunc = (double strain) => strain * material.InitModulus;
                 var existingPrestrain = ndm.PrestrainLogic.GetAll().Sum(x => x.PrestrainValue);
-                var newPrestrain = materialFunc(null, existingPrestrain) / material.InitModulus;
+                var newPrestrain = materialFunc(existingPrestrain) / material.InitModulus;
                 ndm.Material.Diagram = newMaterialFunc;
                 ndm.PrestrainLogic.DeleteAll();
                 ndm.PrestrainLogic.Add(PrestrainTypes.Prestrain, newPrestrain);