Vertical Seismic Load Component.
Vertical Seismic Load Component.
(OP)
In load combinations E = Ev + Eh. All our designs have been Cat. A so per code i've been able to ignore the Ev values. Per the inspector we are required to design as a Category B for this particualr site. Per ASCE 2005 12.4.2.3 the Ev value is accounted for in the factor on DL. My question is Ev really a verticle load and if so How would you distribute this vertical component on each level/column? Or, is this Ev additive to the Eh value?






RE: Vertical Seismic Load Component.
So the Ev portion of the E could be included as a factor on your D load in a computer program load combination....such as 1.34D where it might be 1.2D (gravity) plus 0.14D (for Ev).
Also include it upward as well so you would also have a 1.06D (1.2D minus .14D).
RE: Vertical Seismic Load Component.
It certainly doesn't hurt to run the 1.2D - 0.14D (from Ev) case, but I cannot ever see it controlling.
Josh
RE: Vertical Seismic Load Component.
Clansman
If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.
RE: Vertical Seismic Load Component.