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RE: IBC 1617.1.1 D=?
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 Subject: RE: IBC 1617.1.1 D=?
 From: "Haan, Scott M." <HaanSM(nospamat)ci.anchorage.ak.us>
 Date: Tue, 19 Mar 2002 06:48:00 0900
Equation 1628 and 1629 say E=rho*Qe
+.2*Sds*D. E is the
earthquake force to be used in load combinations. Qe is the effect from horizontal seismic
forces. .2*Sds*D is the vertical component of seismic
force. The dead load still needs to be used in code
load combinations.
Alternative ASD load
combinations:
(Eq 1617) D+L+S+E/1.4 =
D+L+S+[rho*Qe + .2*Sds*D]/1.4
(Eq
1619) .9*D+E/1.4 = .9*D+[rho*Qe +
.2*Sds*D]/1.4

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