ASCE7-10 Ice Dam Loads
ASCE7-10 Ice Dam Loads
(OP)
I am quite familiar with ASCE 7-10 Sec. 7.4.5 where a 2pf load is applied at the eaves for essentially warm roofs. What I don't understand is why every truss document I have ever looked at with overhangs shows the overhang load as 1.00 times the flat roof live load. Where is the 1.0pf coming from?
A confused student is a good student.
Nathaniel P. Wilkerson, PE
www.medeek.com






RE: ASCE7-10 Ice Dam Loads
1.0 X the minimum construction "live load" would be 1.0 X 20psf = 20 psf or about 4" of ice to put it in perspective.
2.0 times the minimum snow load where I live is 50 psf, or about 10" of ice.
I do not know where they get the 1.0 factor.
All I have seen is 2.0.
Mike McCann, PE, SE (WA)
RE: ASCE7-10 Ice Dam Loads
The roof snow load is 25 psf in this particular case.
I don't know where they get the 1.00 factor from either. The ASCE 7-10 specifies a 2.00 factor.
A confused student is a good student.
Nathaniel P. Wilkerson, PE
www.medeek.com
RE: ASCE7-10 Ice Dam Loads
RE: ASCE7-10 Ice Dam Loads
A confused student is a good student.
Nathaniel P. Wilkerson, PE
www.medeek.com