Soil anchor was added

StructureHelperCommon/Models/Soils/AnchorSoilProperties.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Soils
+{
+    public class AnchorSoilProperties : IAnchorSoilProperties
+    {
+        public Guid Id { get;}
+        /// <inheritdoc/>
+        public double YoungsModulus { get; set; }
+        /// <inheritdoc/>
+        public double PoissonRatio { get; set; }
+        /// <inheritdoc/>
+        public double VolumetricWeight { get; set; }
+        /// <inheritdoc/>
+        public double FrictionAngle { get; set; }
+        /// <inheritdoc/>
+        public double Coheasion { get; set; }
+        /// <inheritdoc/>
+        public SoilType SoilType { get; set; }
+
+
+        public AnchorSoilProperties(Guid id)
+        {
+            Id = id;
+            YoungsModulus = 20e6d; //20MPa
+            PoissonRatio = 0.3d;
+            VolumetricWeight = 20e3d; //20kN/m^3
+            FrictionAngle = 25d;
+            Coheasion = 30e3d; //30kPa
+            SoilType = SoilType.SandAndSemiSand;
+        }
+        public AnchorSoilProperties() : this(Guid.NewGuid()) { }
+    }
+}