Values of Cp for Roof and Wall Claddings and Secondary Structural Supports of Cladding on Rectangular Buildings
Notes to Figure A-4.1.7.5.(4):
(1) The larger of W or D is to be used.
(2) Where vertical ribs deeper than 1 m are present on the walls, the dimensions 0.1D and 0.1W must be changed to 0.2D and 0.2W and the negative value of Cp must be changed from –1.2 to –1.4.