Gust Factor Calculator

{
  "type": "object",
  "required": [
    "Argument"
  ],
  "properties": {
    "Argument": {
      "type": "object",
      "description": "GUSTFACTOR request item. STRUCTURE_TYPE controls whether RIGID_PARAM or FLEXIBLE_PARAM is required.",
      "required": [
        "WIND_CODE",
        "STRUCTURE_TYPE"
      ],
      "properties": {
        "WIND_CODE": {
          "type": "string",
          "enum": [
            "KDS(41-12:2022)"
          ]
        },
        "STRUCTURE_TYPE": {
          "type": "string",
          "enum": [
            "RIGID",
            "FLEXIBLE"
          ],
          "description": "Structure type classification."
        },
        "RIGID_PARAM": {
          "type": "object",
          "required": [
            "EXP_CATEGORY",
            "ROOF_HEIGHT",
            "BREADTH_X",
            "BREADTH_Y"
          ],
          "properties": {
            "EXP_CATEGORY": {
              "type": "string",
              "description": "Exposure category."
            },
            "ROOF_HEIGHT": {
              "type": "number",
              "minimum": 0,
              "description": "Roof height."
            },
            "BREADTH_X": {
              "type": "number",
              "minimum": 0,
              "description": "Plan breadth in global X direction."
            },
            "BREADTH_Y": {
              "type": "number",
              "minimum": 0,
              "description": "Plan breadth in global Y direction."
            }
          }
        },
        "FLEXIBLE_PARAM": {
          "type": "object",
          "required": [
            "EXP_CATEGORY",
            "BASIC_WIND_SPEED",
            "IMPORTANCE_FACTOR",
            "DIRECTION_FACTOR_X",
            "DIRECTION_FACTOR_Y",
            "BREADTH_X",
            "BREADTH_Y",
            "STORY_HEIGHT_MAX",
            "FREQUENCY_X",
            "FREQUENCY_Y",
            "DAMPING",
            "TOTAL_MASS",
            "MX",
            "MY",
            "VIBRATION"
          ],
          "properties": {
            "EXP_CATEGORY": {
              "type": "string",
              "description": "Exposure category."
            },
            "BASIC_WIND_SPEED": {
              "type": "number",
              "minimum": 0,
              "description": "Basic wind speed."
            },
            "IMPORTANCE_FACTOR": {
              "type": "number",
              "minimum": 0,
              "description": "Importance factor."
            },
            "TOPOGRAPHIC_EFFECT": {
              "type": "object",
              "required": [
                "OPT_USE"
              ],
              "properties": {
                "OPT_USE": {
                  "type": "boolean",
                  "default": false,
                  "description": "Whether to use topographic effect."
                },
                "KZT": {
                  "type": "number",
                  "minimum": 0,
                  "description": "Topographic factor Kzt. Required only if OPT_USE=true."
                }
              },
              "description": "Optional. If omitted, treated as OPT_USE=false."
            },
            "DIRECTION_FACTOR_X": {
              "type": "number",
              "minimum": 0,
              "description": "Direction factor in X."
            },
            "DIRECTION_FACTOR_Y": {
              "type": "number",
              "minimum": 0,
              "description": "Direction factor in Y."
            },
            "BREADTH_X": {
              "type": "number",
              "minimum": 0,
              "description": "Plan breadth in global X direction."
            },
            "BREADTH_Y": {
              "type": "number",
              "minimum": 0,
              "description": "Plan breadth in global Y direction."
            },
            "STORY_HEIGHT_MAX": {
              "type": "number",
              "minimum": 0,
              "description": "Maximum story or roof height used for flexible response."
            },
            "FREQUENCY_X": {
              "type": "number",
              "minimum": 0,
              "description": "Fundamental frequency in X."
            },
            "FREQUENCY_Y": {
              "type": "number",
              "minimum": 0,
              "description": "Fundamental frequency in Y."
            },
            "DAMPING": {
              "type": "number",
              "minimum": 0,
              "description": "Damping ratio, for example 0.03."
            },
            "TOTAL_MASS": {
              "type": "number",
              "minimum": 0,
              "description": "Total mass."
            },
            "MX": {
              "type": "number",
              "minimum": 0,
              "description": "Mass term in X."
            },
            "MY": {
              "type": "number",
              "minimum": 0,
              "description": "Mass term in Y."
            },
            "VIBRATION": {
              "type": "number",
              "minimum": 0,
              "description": "Vibration-related factor or flag."
            }
          }
        }
      }
    }
  }
}

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{
  "Argument": {
    "WIND_CODE": "KDS(41-12:2022)",
    "STRUCTURE_TYPE": "FLEXIBLE",
    "FLEXIBLE_PARAM": {
      "EXP_CATEGORY": "B",
      "BASIC_WIND_SPEED": 38,
      "IMPORTANCE_FACTOR": 1,
      "TOPOGRAPHIC_EFFECT": {
        "OPT_USE": true,
        "KZT": 1.1
      },
      "DIRECTION_FACTOR_X": 0.85,
      "DIRECTION_FACTOR_Y": 0.85,
      "BREADTH_X": 32,
      "BREADTH_Y": 24,
      "STORY_HEIGHT_MAX": 72,
      "FREQUENCY_X": 0.42,
      "FREQUENCY_Y": 0.48,
      "DAMPING": 0.03,
      "TOTAL_MASS": 85000,
      "MX": 82000,
      "MY": 80500,
      "VIBRATION": 1
    }
  }
}

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{
  "OPE_GUSTFACTOR_RESPONSE": {
    "GUST_FACTOR_X": 1.7400999942907864,
    "GUST_FACTOR_Y": 1.7513941589768178
  }
}