diff --git a/Pages/Index.cshtml b/Pages/Index.cshtml
new file mode 100644
index 0000000..a1b8139
--- /dev/null
+++ b/Pages/Index.cshtml
@@ -0,0 +1,40 @@
+@page
+@model IndexModel
+
+<h2>Модель расчета поковок кольцо раскатное</h2>
+<form method="post">
+    <p>
+        <label>D:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="D" value="1360"/>
+    </p>
+    <p>
+        <label>d:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="dd" value="540"/>
+    </p>
+    <p>
+        <label>H:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="H" value="215,00"/>
+    </p>
+    <p>
+        <label>x:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any"
+               onchange="document.getElementById('z').value = this.value - 1" name="x" value="2"/>
+    </p>
+    <p>
+        <label>y:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="y" value="20"/>
+    </p>
+    <p>
+        <label>z:</label><br />
+        <input type="text" id="z" oninput="validateDecimal(this)" step="any" name="z" readonly value="1"/>
+    </p>
+    <p>
+        <label>Q:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="Q" value="60"/>
+    </p>
+    <p>
+        <label>Напуск на ТО:</label><br />
+        <input type="text" oninput="validateDecimal(this)" step="any" name="onTO" value="0"/>
+    </p>
+    <input type="submit" value="Отправить" />
+</form>
\ No newline at end of file
diff --git a/Pages/Index.cshtml.cs b/Pages/Index.cshtml.cs
new file mode 100644
index 0000000..50502de
--- /dev/null
+++ b/Pages/Index.cshtml.cs
@@ -0,0 +1,160 @@
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+public class IndexModel : PageModel
+{
+    public double D { get; private set; }
+    public double dd { get; private set; }
+    public double H { get; private set; }
+    public double x { get; private set; }
+    public double y { get; private set; }
+    public double z { get; private set; }
+    public double Q { get; private set; }
+    public double onTO { get; private set; }
+
+    public double h1 { get; private set; }
+    public double h2 { get; private set; }
+
+    public void OnPost(double D, double dd, double H, double x, double y, double z, double Q, double onTO)
+    {
+        h1 = H * x + (y * z) + onTO;
+        h2 = H * x + (y * z) + Q + onTO;
+
+        #region Расчет размеров поковки
+
+        // H заготовки = (Н1+б)+-∆/2
+        // Размер
+        double H_Billet = h1 + SearchLimit(D, h1).Item1;
+        // Допуск на размер +-
+        int limit1 = SearchLimit(D, h1).Item2;
+
+        // H заготовки с пробой = (Н2+б)+-∆/2
+        double H_BilletWithBlank = h2 + SearchLimit(D, h2).Item1;
+        // Допуск на размер +-
+        int limit2 = SearchLimit(D, h2).Item2;
+
+        // D дет = D+напуск на ТО
+        double D_Detail = D + onTO;
+
+        // D заг = (D+б)+-∆/2+напуск на ТО
+        double D_Billet = D_Detail + SearchLimit(D, h1).Item1 + onTO;
+        int limit3 = SearchLimit(D, h1).Item2;
+
+        // D заг с пробой= (D+б)+-∆/2+напуск на ТО
+        double D_BilletWithBlank = D_Detail + SearchLimit(D, h2).Item1 + onTO;
+        int limit4 = SearchLimit(D, h2).Item2;
+
+        // d дет=d-напуск на ТО
+        double d_Detail = dd + onTO;
+
+        // d заг =(dдет-б)+-3б
+        double d_Billet = d_Detail - SearchLimit(D, h1).Item1;
+        int limit5 = SearchLimit(D, h1).Item2 * 3;
+
+        //d заг с пробой =(dдет-б)+-3б
+        double d_BilletWithBlank = d_Detail - SearchLimit(D, h2).Item1;
+        int limit6 = SearchLimit(D, h2).Item2 * 3;
+
+        #endregion
+
+        #region Расчет массы поковки без пробы
+
+        // Диск номинал
+        double D_calc =  
+
+
+        #endregion
+
+        #region Расчет массы поковки c пробой
+
+        #endregion
+
+    }
+
+    private (int, int) SearchLimit(double D, double H)
+    {
+        // Диапазоны высоты H 
+        double[] heightRanges = new double[]
+        {
+        100, 150, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1400, 1600, 1800, 2000, 2250, 2500
+        };
+
+        // Диапазоны диаметра D
+        double[] diameterRanges = new double[]
+        {
+        499, 500, 630, 800, 1000, 1250, 1400, 1600, 1800, 2000, 2250, 2500, 2800, 3150, 3500, 4000, 4500, 5000
+        };
+
+
+        (int, int)[,] limits = new (int, int)[,]
+           {
+        // Св. 100 до 150 включ.
+        { (24,9), (25,9), (27,10), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1) },
+
+        // Св. 150 до 200
+        { (24,9), (25,9), (27,10), (29,11), (31,11), (35,13), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1) },
+
+        // Св. 200 до 250
+        { (25,9), (26,9), (28,10), (30,11), (32,12), (36,13), (38,14), (40,15), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1) },
+
+        // Св. 250 до 315
+        { (27,10), (28,10), (30,11), (32,12), (34,13), (38,14), (41,15), (44,16), (47,18), (51,19), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1) },
+
+        // Св. 315 до 400
+        { (28,10), (29,11), (31,11), (33,12), (35,13), (40,15), (42,16), (46,17), (49,19), (53,20), (57,21), (61,23), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1) },
+
+        // Св. 400 до 500
+        { (29,11), (30,11), (31,11), (34,13), (36,13), (41,15), (44,16), (48,18), (51,19), (55,21), (59,22), (63,24), (67,25), (71,27), (-1,-1), (-1,-1), (-1,-1) },
+
+        // Св. 500 до 630
+        { (30,11), (31,11), (33,12), (35,13), (37,14), (43,16), (46,17), (50,19), (53,20), (57,21), (61,23), (65,25), (69,26), (75,28), (80,30), (95,37), (-1,-1) },
+
+        // Св. 630 до 800
+        { (-1,-1), (33,12), (36,13), (38,14), (41,15), (46,17), (50,19), (54,20), (57,21), (61,23), (65,25), (71,27), (77,29), (83,31), (89,34), (98,39), (105,43) },
+
+        // Св. 800 до 1000
+        { (-1,-1), (-1,-1), (37,14), (40,15), (43,16), (48,18), (52,20), (56,21), (59,22), (63,24), (68,26), (74,28), (80,30), (86,33), (92,36), (101,41), (108,46) },
+
+        // Св. 1000 до 1250
+        { (-1,-1), (-1,-1), (-1,-1), (44,16), (46,17), (52,20), (56,21), (60,23), (64,24), (68,26), (74,28), (81,30), (86,33), (92,36), (98,39), (105,43), (112,48) },
+
+        // Св. 1250 до 1400
+        { (-1,-1), (-1,-1), (-1,-1), (-1,-1), (47,18), (54,20), (58,22), (62,23), (67,25), (72,27), (78,29), (83,31), (89,34), (95,37), (101,41), (108,45), (115,50) },
+
+        // Св. 1400 до 1600
+        { (-1,-1), (-1,-1), (-1,-1), (-1,-1), (48,18), (56,21), (60,23), (65,24), (69,26), (75,28), (81,30), (87,34), (93,36), (99,39), (104,42), (110,47), (119,51) },
+
+        // Св. 1600 до 1800
+        { (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (58,22), (63,23), (67,25), (73,27), (79,29), (85,33), (91,35), (97,38), (102,41), (106,43), (113,48), (120,52) },
+
+        // Св. 1800 до 2000
+        { (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (64,23), (68,25), (75,28), (81,30), (87,34), (92,36), (98,38), (103,41), (107,43), (115,50), (121,52) },
+
+        // Св. 2000 до 2250
+        { (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (69,26), (76,28), (82,30), (88,34), (94,37), (100,40), (104,42), (110,47), (116,50), (122,52) },
+
+        // Св. 2250 до 2500
+        { (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (-1,-1), (82,30), (85,32), (91,35), (97,38), (100,41), (108,43), (114,49), (119,51), (125,53) }
+           };
+
+        int FindIndex(double val, double[] ranges)
+        {
+            for (int i = 0; i < ranges.Length; i++)
+            {
+                if (val <= ranges[i])
+                    return i - 1;
+            }
+            return -1;
+        }
+
+        int hIndex = FindIndex(H, heightRanges);
+        int dIndex = FindIndex(D, diameterRanges);
+        if (D < 499)
+            dIndex = 0;
+
+        if (hIndex == -1 || dIndex == -1)
+            return (-1, -1);
+
+        return limits[hIndex, dIndex];
+    }
+}
+
diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..9fed10d
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,14 @@
+using Microsoft.AspNetCore.Mvc;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddRazorPages(options =>
+{
+    options.Conventions.ConfigureFilter(new IgnoreAntiforgeryTokenAttribute());
+});
+
+var app = builder.Build();
+
+app.MapRazorPages();
+
+app.Run();
\ No newline at end of file
diff --git a/Properties/launchSettings.json b/Properties/launchSettings.json
new file mode 100644
index 0000000..d7f8156
--- /dev/null
+++ b/Properties/launchSettings.json
@@ -0,0 +1,38 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:11414",
+      "sslPort": 44344
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5146",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7106;http://localhost:5146",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
diff --git a/SumCalculator.csproj b/SumCalculator.csproj
new file mode 100644
index 0000000..1b28a01
--- /dev/null
+++ b/SumCalculator.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>
diff --git a/SumCalculator.sln b/SumCalculator.sln
new file mode 100644
index 0000000..b705000
--- /dev/null
+++ b/SumCalculator.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36203.30 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SumCalculator", "SumCalculator.csproj", "{D0BEB4F5-C30C-497E-94A7-88F1D4EDA4D3}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D0BEB4F5-C30C-497E-94A7-88F1D4EDA4D3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D0BEB4F5-C30C-497E-94A7-88F1D4EDA4D3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D0BEB4F5-C30C-497E-94A7-88F1D4EDA4D3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D0BEB4F5-C30C-497E-94A7-88F1D4EDA4D3}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {0228A780-4353-439C-BDDC-ED3ABEE9D0BD}
+	EndGlobalSection
+EndGlobal
diff --git a/appsettings.Development.json b/appsettings.Development.json
new file mode 100644
index 0000000..0c208ae
--- /dev/null
+++ b/appsettings.Development.json
@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}
diff --git a/appsettings.json b/appsettings.json
new file mode 100644
index 0000000..10f68b8
--- /dev/null
+++ b/appsettings.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}