Factor of safety.

CFR · 2024-01-01 · US · Title 14

Unless otherwise specified, a factor of safety of 1.5 must be applied to the prescribed limit load which are considered external loads on the structure. When a loading condition is prescribed in terms of ultimate loads, a factor of safety need not be applied unless otherwise specified.

official document · source cfr-2024 · id 14:§ 25.303