The following shows a schematic section of a three-story reinforced concrete building. The building weights, elevations and seismic story forces are shown in the table below. What is the overturning moment at the base? 1200 F800 k F-400 k Roof 3rd Flr 2nd Fir

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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What is the overturning moment at the base?
Level
Roof
3rd
The following shows a schematic section of a three-story
reinforced concrete building. The building weights,
elevations and seismic story forces are shown in the table
below.
2
Fre=1200 k
F800 k
F-400 k
Story Elevation
(ft)
Weight
(kip)
3,000 k
4,000 k
4,000 k
11,000k
42
30
Building Elevation and Seismic Story Forces
15
14,400 kip-ft
24,400 kip-ft
60,400 kip-ft
80,400 kip-ft
Story
force, F
(kip)
1,200
800
400
2.400K
Story shear
(kip)
1,200
2,000
2,400
Roof
3rd Flr
2nd Fir
Story overturning
moment
(kip-ft)
14,400
44,400
80,400
Transcribed Image Text:What is the overturning moment at the base? Level Roof 3rd The following shows a schematic section of a three-story reinforced concrete building. The building weights, elevations and seismic story forces are shown in the table below. 2 Fre=1200 k F800 k F-400 k Story Elevation (ft) Weight (kip) 3,000 k 4,000 k 4,000 k 11,000k 42 30 Building Elevation and Seismic Story Forces 15 14,400 kip-ft 24,400 kip-ft 60,400 kip-ft 80,400 kip-ft Story force, F (kip) 1,200 800 400 2.400K Story shear (kip) 1,200 2,000 2,400 Roof 3rd Flr 2nd Fir Story overturning moment (kip-ft) 14,400 44,400 80,400
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