Seismic Load Calculator
Calculate seismic base shear, story forces, and design response spectrum using the Equivalent Lateral Force method. Supports ASCE 7-22, Eurocode 8, and AS 1170.4.
ASCE 7-22 · Eurocode 8 · AS 1170.4
Seismic Hazard
Building Configuration
R = 8
Lvl
Height (m)
Weight (kN)
1
2
3
Design Response Spectrum
Sa(T=0.66s) = 1.000 g
Story Force Distribution
Key Metrics
Base Shear V
525.0kNCs
0.1250
Period T
0.665s
ASCE 7 Eq. 12.8-7 (Cu capped)
Ta (empirical)
0.475s
Standard
ASCE 7-22
Seismic Design Category:SDC D
Inter-story Drift
Exceeds allowable drift
Story Results
| Lvl | h (m) | W (kN) | Fx (kN) | Vx (kN) | Mx (kNm) | Drift |
|---|---|---|---|---|---|---|
| 3 | 10.5 | 1200 | 240.1 | 240.1 | 0 | 3.144% |
| 2 | 7.0 | 1500 | 193.5 | 433.6 | 840 | 2.027% |
| 1 | 3.5 | 1500 | 91.4 | 525.0 | 2358 | 0.957% |