Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations GregLocock on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

I'm still comparing European and AC

Status
Not open for further replies.

ZoranB

Structural
Sep 13, 2000
38
I'm still comparing European and ACI code.
I have some doubts concerning load combining in ACI.

From ACI318 and its comment it is not quite clear are the following combinations possible:

0.9 x D + 1.7 x L
(when dead load reduces effects of live load)

1.4 x D + 1.7 x L1 + 0.0 x L2
(it seems reasnoble that if there are several live loads, some of them could have favourable character)

0.75 x (1.4 x D + 1.7 x W)
(combination with wind load, but with zero live load)

0.9 x D + ??? x L + 1.3 x W
(dead load has a favourable character so it is taken with reduced factor. Why is wind factor 1.3 and not 1.28. Can live load "join" this combination and with which factor ???).

0.9 x D + 1.4 x F + 1.7 x L
(F - fluid pressure)

Could fluid load (F), inpact load (I), effects from differential settlement (T) be taken into seismic combination (wind load couldn't)? If could, what will be the right treatment for fluid load or T - load?

I also checked SAP2000 manual. It considers only small part of all possible combinations. Why is that?

thanks in advance
Zoran
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor