𝐌𝐚𝐱 𝐀𝐥𝐥𝐨𝐰𝐚𝐛𝐥𝐞 𝐃𝐢𝐬𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 // 𝐀𝐒𝐂𝐄 𝟕-𝟐𝟐 // 𝐀𝐂𝐈 𝟑𝟏𝟖-𝟏𝟗

In terms of structural engineering, Maximum allowable displacements of a structure are categorized into the following two;

◻ Horizontal (Drifts)
◻ Vertical (Deflection)

◾ According to ACI 318-19, the maximum allowable deflection is specified as L/180, L/240, L/360 & L/480 …

◾ While according to ASCE 7-22, drift limits are 0.02hx, 0.015hx, 0.025hx …

Reference tables are attached below.

To ensure that the building is safe and functional, design professionals must consider the building’s structural system