12.9 The story weights and heights of a building are given in the following table: a) Complete the computations in this table and determine story seismic forces (Fi), story shear (Vi), and story moment (MOT). b) Determine the building base shear and over-turning moment at its base. Level Weight Height www withi (kip) (ft) wi.hi Σwi.hi Story force, F, (kip) Story Shear Vi (kip) Story Overturning Moment, Mor (kip-ft) Roof 2,500 70 175,000 5 3,000 57 171,000 4 3,000 44 132,000 3 3,000 31 93,000 2 3,500 18 63,000 Sum 15,000 634,000
12.9 The story weights and heights of a building are given in the following table: a) Complete the computations in this table and determine story seismic forces (Fi), story shear (Vi), and story moment (MOT). b) Determine the building base shear and over-turning moment at its base. Level Weight Height www withi (kip) (ft) wi.hi Σwi.hi Story force, F, (kip) Story Shear Vi (kip) Story Overturning Moment, Mor (kip-ft) Roof 2,500 70 175,000 5 3,000 57 171,000 4 3,000 44 132,000 3 3,000 31 93,000 2 3,500 18 63,000 Sum 15,000 634,000
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Transcribed Image Text:12.9 The story weights and heights of a building are given in the following table:
a) Complete the computations in this table and determine story seismic forces (Fi), story shear (Vi), and story moment (MOT).
b) Determine the building base shear and over-turning moment at its base.
Level
Weight Height
www
withi
(kip)
(ft)
wi.hi
Σwi.hi
Story force,
F, (kip)
Story
Shear
Vi (kip)
Story
Overturning
Moment, Mor
(kip-ft)
Roof
2,500
70
175,000
5
3,000
57
171,000
4
3,000
44
132,000
3
3,000
31
93,000
2
3,500
18
63,000
Sum
15,000
634,000
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