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V.4.2.3.3Amendment No. V-l/92 (Jan.)Ramps will similarly experience wind forcesgreater than those acting on the adjacent mainspan. Thevalues recommended above for stairways should also beused for ramps.The definition of the notationsA! are given in BS 5400: Part 2.C D , C L , g andC s = Coefficient of longitudinal load actinghorizontally on stairway or ramp.P L = Nominal longitudinal wind load actinghorizontally.For stairways and ramps, the area A 3 as definedin Clause 5.3.5 of BS 5400 : Part 2 to obtain thevertical wind load, shall be the inclined area of thedeck.

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