= w,w' simulated distributed dead & live loads exerted by air bags Hs simulated S-N wind load, at wall = Includes dead weight of test structure (i.e., 43 × 1.07) multiplied by appropriate factor. (b) Simulated loads on lower column for component tests of columns. 35 b 144 (c) Simulated load on main beam for fatigue test in kip per ram, (see fig. 10.23). 1D + 1L = 2.5 III. Vertical Load Computations (1) Conversion factor accounting for incomplete air bag coverage (2) Floor load elements (D) converted to "per square foot" on total floor area. (3) Columns and beams prorated per unit area, say, 100 lb/ft concrete (includes reinforcing *2.25 in is used as average slab thickness, assuming that slab elevation over the top of the main beam is kept as 2.5 in. (5) Simulated second-story column load. = (a) Dead Load: Tributary floor area 10.39 × 9.5 = 99 ft2 3d floor: 99 X 51.58 roof: 99 X 41.28 14 point loading: 1⁄2 the load resting on the beam, to be applied by each ram) Area: = 65 ft2 1 D: Slab: 6.25 ft × 7.5 ft (added slab width) × 21 psf = 945 lb (See (2)) Floor channel slab: 16.3 psf × 6.25 ft × 9 ft Walls, etc: 8.75 psf × 65 ft2 = 920 lb (See (2)) = 570 lb (See (2)) 2,435, lb 2.5 kip 7. Wind Loads (1) South wall (Hs, Hs') (refer to fig. C.1 (1)) a = Story height X panel width = 8.62 x 10.39 × 90 ft2 at point A-Hs. at point B Hs'. Hs is at firewall. Hs' is midway between two firewalls. Assume stiff floor distributes shear between two walls over width of structure, then test assembly carried 1⁄2 the wind load. a' = = = story height X 9.5 ft 8.62 x 9.5 82 ft2 Assume 1⁄2 the wind load carried by wall panel (conservative) .. at H 20 psf: Hw 1⁄2 X (2.5 X 82) ft2 x 20 lb/ft2 2,050 lb 2.05 kip. Therefore, 0.8 Hw 1.64 kip** = = = = = For an explanation of symbols, refer to fig. 6.1, tables 6.1 and 6.2, appendix C(1) I. Tests conducted on complete test structure with walls installed. (a) Test 1: Column Loads to 0.9D (0.9D) Start of test: Completion: Loading: Increments: **1.6 kip was used in test, based on H = 15 psf. *3 kip was used in test, based on H = 15 psf rather than 0.8H. This is not too low, considering the fact that a service wind load of 20 psf is extremely conservative for a built up area. 9 in 1 kip increments WALL |