Answer Happy

Calculate the wind velocity pressure (q) on the following windward wall only (no sides or leeward) and show the wind profile at the indicated heights. Also calculate forces in kip on the 1st floor diaphragm, and roof diaphragm. There are 2 shear walls at ends, and the system has a uniform stiffness. Building is a clinic (hospital category) 25x50: Use the wall section with the levels for your profile calculations. 1 = 1.15 wind speed = 100 mph exposure category: B Roof Parapet 2 Floor 2 10 15 BUILDING SECTION. 3046 NUDA 25+ 20- 15- Section 50' 25' Plan View

Initial Pressure 4s = 17.52 BB psf 90-15 ....... psf 14.26 q 15-20 psf 15.51 16.51 q 20-25 psf q 25-30 psf 0.0018 Diaphragm Loads Load win plf on the roof diaphragm Wroof plf 78.75 Load w in plf on the 2nd floor diaphragm W2nd plf 218.75 Hint: Wroof = pressure in psf (from previous) x tributary height (parapet +1/2 the height bet 2nd floor and roof). W2nd n = same concept of tributary height above and below the slab Total force (in kips) on the windward wall Force on roof kips 22.31 Force on 2nd floor = ....... kips 22.31 Total wall force = ........ kips