A plane frame of a two-story reinforced concrete SMRF (R-8.5) office building is shown in Figure 2. The building is of Occupancy Category IV (I=1.0) and is located 5 km away from a fault line of seismic source type C (N a = 1.0; Nv = 1.0) in zone 4. The soil profile to which the structure is constructed is stiff soil (SD), with Seismic Coefficient C a = 0.44 Na and Cv = 0.64 Nv. The total computed dead load per floor on the frame is: W Basement = 500 kN; W Ground Level = 500 kN; W Level 2 = 700 KN; W Level 3 = 1000 KN. a. What is the near most value of the design base shear of the building in kN? b. What is the value of the lateral forces in Level 2 and Level 3 in KN? c. By Portal method, determine the bending moment, shear and axial forces in girders and columns.
A plane frame of a two-story reinforced concrete SMRF (R-8.5) office building is shown in Figure 2. The building is of Occupancy Category IV (I=1.0) and is located 5 km away from a fault line of seismic source type C (N a = 1.0; Nv = 1.0) in zone 4. The soil profile to which the structure is constructed is stiff soil (SD), with Seismic Coefficient C a = 0.44 Na and Cv = 0.64 Nv. The total computed dead load per floor on the frame is: W Basement = 500 kN; W Ground Level = 500 kN; W Level 2 = 700 KN; W Level 3 = 1000 KN. a. What is the near most value of the design base shear of the building in kN? b. What is the value of the lateral forces in Level 2 and Level 3 in KN? c. By Portal method, determine the bending moment, shear and axial forces in girders and columns.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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3 All information are in the photo attached.
Transcribed Image Text:Level 3
4 m
Level 2 b
k
4 m
Ground Level
Basement
4 m
6 m
6m
6 m
Figure 2
Transcribed Image Text:Problem No. 3:
A plane frame of a two-story reinforced concrete SMRF (R=8.5) office building is shown
in Figure 2. The building is of Occupancy Category IV (I = 1.0) and is located 5 km away
from a fault line of seismic source type C (N a = 1.0 ; N v = 1.0) in zone 4. The soil profile
v%3D
to which the structure is constructed is stiff soil (Sp), with Seismic Coefficient Ca = 0.44
Na and Cv = 0.64 Nv. The total computed dead load per floor on the frame is: W Basement
%3D
= 500 kN; W Ground Level = 500 kN; W Level 2 = 700 kN; W Level 3= 1000 kN.
%3!
a. What is the near most value of the design base shear of the building in kN?
b. What is the value of the lateral forces in Level 2 and Level 3 in kN?
c. By Portal method, determine the bending moment, shear and axial forces in
girders and columns.
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