Static Analysis Method & Calculation of Design Seismic Force in STAAD Pro v8i as per IS1983 – 2002
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Four-story RC office building
The building is located in Assam (seismic zone V).
The soil conditions are medium stiff
Entire building is supported on a raft foundation.
R. C. frames are infilled with brick-masonry.
Lumped weight due to dead loads is 12kN/m2 on floors and 10 kN/m2 on the roof.
Live load of 4 kN/m2 on floors and 1.5 kN/m2 on the roof.
For seismic zone V
Zone factor Z = 0.36 (Table 2 of IS: 1893)
For office building, the importance factor, I, = 1.0 (Table 6 of IS: 1893).
Building provided with moment resisting frames detailed as per IS:13920-1993.
Response reduction factor, R, = 5. (Table 7 of IS: 1893 Part 1)
Seismic Weights, Fundamental Period in Staad Pro, Force Distribution with Building Height in Staad Pro, Load Combinations, Seismic Analysis as per IS1893 2002 in Staad