09-02-2010, 04:59 AM

1. Automatic Seismic Loads -Static Analysis

For story drifts and to scale the response spectrum cases

AS1170.4 section 6 correspond to 1996 BOCA seismic loads automatic generation in Etabs

Response Modification, R table 6.2.6(a) AS1170.4

Effec. Peaak Accel, Aa table 2.3

Effec. Peak Velocity Av same as above

Site Coefficient S: 1, 1.2, 1.5 and 2 . In case, require S=0.7, you can adjust the value of Av to suit (increase Av by 1.04 for S=1.2.

(to be continued)

For story drifts and to scale the response spectrum cases

AS1170.4 section 6 correspond to 1996 BOCA seismic loads automatic generation in Etabs

Response Modification, R table 6.2.6(a) AS1170.4

Effec. Peaak Accel, Aa table 2.3

Effec. Peak Velocity Av same as above

Site Coefficient S: 1, 1.2, 1.5 and 2 . In case, require S=0.7, you can adjust the value of Av to suit (increase Av by 1.04 for S=1.2.

(to be continued)