(a) The uniformly distributed live load on all four floors in figure below is 70 lb/ft² and considering any live load reduction if permitted by the ASCE standard. Establish the live loads and free body diagrams for members (a) floor beam B1, (b) girder G2, and (c) calculate the axial forces produced by the live load in column C1 in the third and first stories.
(a) The uniformly distributed live load on all four floors in figure below is 70 lb/ft² and considering any live load reduction if permitted by the ASCE standard. Establish the live loads and free body diagrams for members (a) floor beam B1, (b) girder G2, and (c) calculate the axial forces produced by the live load in column C1 in the third and first stories.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Handwritten answer pls, part a

Transcribed Image Text:(b) Assuming the wind pressure on the windward side varies linearly between the 12-ft intervals,
determine the total wind force on the building in the direction of the wind.
↑ N
6 @ 10' = 60'
A
(B)
B2
I
G3
TH
B4
G4
B1
60'
G1
C2
I
G2
B3
40'
C4
2 @ 20'=40'
I+
5 @ 10' = 50'
C1
60'
Building Section
40'
4 @ 12¹=48'

Transcribed Image Text:(a) The uniformly distributed live load on all four floors in figure below is 70 lb/ft² and considering
any live load reduction if permitted by the ASCE standard. Establish the live loads and free body
diagrams for members (a) floor beam B1, (b) girder G2, and (c) calculate the axial forces produced
by the live load in column C1 in the third and first stories.
(b) Determine the wind pressure distribution on the four sides of the four-story building below
assuming wind is acting in the north-south direction.
The building is located near the
Georgia coast where the wind velocity contour map in the ASCE Standard specifies a design wind
speed of 140 mph and exposure D applies. The building, located on level flat ground, is classified
as stiff because its natural period is less than 1 s, therefore, the gust facto G =0.85. The importance
factor is 1.0. The building is located on the level ground then K-1. Assume Ka=0.85. On the
windward side, evaluate the magnitude of the wind pressure every 12 ft in the vertical direction.
Expert Solution

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Step 1: Introducing given data
VIEWStep 2: Calculate tributary area for beam B1
VIEWStep 3: Calculate LL for beam B1 & draw FBD
VIEWStep 4: Calculate tributary area for girder G2
VIEWStep 5: Calculate LL for beam G2
VIEWStep 6: Draw FBD of G2
VIEWStep 7: Calculate live load for C1
VIEWStep 8: Calculate axial load in column C1 due to live load
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