{"gross_floor_m2":129.485038,"stories":2,"required_x_cm_per_m2":29.0,"actual_x_cm":4432.5,"required_x_cm":2305.371646,"required_y_cm_per_m2":29.0,"actual_y_cm":3608.8,"required_y_cm":2305.371646,"balance_x":0.8040457850406738,"balance_y":0.6998718770019219,"pass":true,"messages":["壁量計算 OK (X: 4432/2305cm, Y: 3609/2305cm)","N値推定: 端部柱最大 19.9 kN → 推奨金物: ホールダウン金物 HD-B20","計算仮定: 軽い屋根+2階建て係数29 cm/m² (令第46条 表3)、壁倍率は構造用合板2.5/筋交2.0/IFCWALLSTANDARDCASE1.5/汎用1.0 の簡易判定。N値は端部柱の保守側推定。層間変形角は弾性域で 1/(200×剛性比) で近似。実際の構造設計では各柱位置で個別計算 + 構造一級建築士の検証必須。","4号特例廃止 (2025-04-01) 区分: 新2号建築物 (壁量+N値+柱小径+横架材スパン) — 延べ床129.5㎡ / 2階建て"],"n_value_max_kn":19.8738935,"joint_recommendation":"ホールダウン金物 HD-B20","story_drift_ratio":0.003194097270560851,"story_drift_pass":true,"asd":null}