Question

Check m A five-story bullding plan is shown in figure (a). Following the ASCE standard, the wind pressure along the helght the windward side has been established as shown in the figure (c). on (1 2 4 5 D 4@ 25'- 100 Plan (a) roof 20 5 4 15 13 2 wind pressures in Ib/ft2 Building Section 5@ 12'= 60- 3 @30'=90 3 @ 20= 60 Considering the windward pressure in the east-west direction, use the tributary each floor level. area concept to compute the resultant wind force at The resultant wind force at the roof is lb. The resultant wind force at the fifth floor is lb. The resultant wind force at the fourth floor is lb. The resultant wind force at the third floor is lb. The resultant wind force at the second floor is Ib. Compute the horizontal base shear and the overturning moment of the building. kip. The horizontal base shear of the building is ft-kip. The overturning moment of the building is

Answer 1

RESOLTANn WIND FORCE *( 90) is 20 psfx AT THE ROOF = 10, 800 lb 20 AT THE FIFTH FAR x90 21 600 lb FOURTI FLOOR AT THE 12. 12 17100 b L2 AT THE THIRD FL0OR, 15 +13 15840 1b FLOOR SECOND AT THE 90 = 14040 lb BrSE SYEAR = to800 HORL2O AL 21600 17 100 15 84 0 79 3 80 = 79.38 lips 15 940 x 24 L4040 x 12+ + 171 90 x36+ 21600 x 48 CVERT URNING Mer + 10800 x 60 = 2849040 ft-lb 2 B49. 04 ft. eip