Last Updated：2025/11/24
During the retrofit, engineers implemented positive drainage on the roof deck so that all loading deflections were accounted for and water would be removed within 48 hours after rainfall under conditions conducive to drying.
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During the retrofit, engineers implemented positive drainage on the roof deck so that all loading deflections were accounted for and water would be removed within 48 hours after rainfall under conditions conducive to drying.
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改修の際、エンジニアはデッキの荷重によるたわみを設計段階で考慮し、追加の屋根勾配を設けて乾燥しやすい条件下で降雨後48時間以内に確実に排水されるように排水設計を行いました。
