{"gross_floor_m2":138.81420000000003,"stories":2,"required_x_cm_per_m2":29.0,"actual_x_cm":5466.0,"required_x_cm":2146.3393,"required_y_cm_per_m2":29.0,"actual_y_cm":5341.25,"required_y_cm":2146.3393,"balance_x":0.6236684098392408,"balance_y":0.5263157894736842,"pass":true,"messages":["壁量計算 OK (X: 5466/2146cm, Y: 5341/2146cm)","N値推定: 端部柱最大 18.5 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138.8㎡ / 2階建て"],"n_value_max_kn":18.502925,"joint_recommendation":"ホールダウン金物 HD-B20","story_drift_ratio":0.002009210671659256,"story_drift_pass":true,"asd":null}