Total weight = 143.7 kips
Seismic coefficient, Cs = 0.167
Seismic force = CsW = (0.167)(143.7) = 24 kips (107 KN)
Equivalent Running Load w2-7 = 24 k / 90 ft. = 267 plf (3.90 KN/m)
Weight of roof and normal walls between grid lines 7 and 8
Item
Tributary
Length /
% Solid
Area
Unit
Seismic
Height /
Width
(ft.2)
Weight
Weight
Width
(ft.)
(psf / lb)
(kips)
(ft.)
UPPER ROOF
Roof (grid 7-8)
10.0
42.0
100.0
420.0
12.1
5.1
LONGITUDINAL WALLS
Wall C7-C8
8.0
10.0
75.0
60.0
100.0
6.0
Wall G7-G8
8.0
10.0
75.0
60.0
100.0
6.0
76.1 KN
TOTAL
17.1
Total weight = 17.1 kips
Seismic coefficient, Cs = 0.167
Seismic force = CsW = (0.167)(17.1) = 2.86 kips (12.7 KN)
Equivalent Running Load w7-8 = 2.86 k / 10 ft. = 286 plf (4.17 KN/m)
Shear force to wall line 2 from upper roof diaphragm:
V = w2-7(9' = (267 plf)(9' = 2.40 k (10.7 KN)
)
)
Shear force to each rigid frame (grid lines 3, 4, 5 and 6)
V = w2-7(18' = (267 plf)(18' = 4.81 k (21.4 KN)
)
)
Shear force to wall line 7
V = w2-7(9' + w7-8(5' = (267)(9) + (286)(5) = 3.83 k (17.0 KN)
)
)
Shear force to wall line 8 V = w7-8(5' = (286)(5) =1.43 k (6.36 KN)
)
1 kip = 4.448 KN
1 foot = 0.305m
1 plf = 14.59 N/m
H3-17
Previous Page
