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rain-on-snow surcharge on tanks
i would like to get feedback on asce's requirement for rain-on-snow surcharge loads on tanks, say tall silo tanks. is this required? section 7.10 of asce 7-05 states that, "for locations where pg is 20 psf or less, but not zero, all roofs with slopes (in deg) less than w/50 with w in feet shall have a 5 psf rain-on-snow surcharge." w is the horiz dist from eave to ridge in feet.
my pg is 14.5 psf, and my tank is 20 feet in diameter with a slope of 13 degrees, from eave and meeting at the center of the roof tank. my w/50 would be 10/50 = 0.2 degree. my tank roof slope is 13 degree. according to asce, i do not need the rain-on-snow surcharge, is that right?
thank you so much for your advice and feedback.

2009-09-15, 04:18 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	rain-on-snow surcharge on tanks rain-on-snow surcharge on tanks i would like to get feedback on asce's requirement for rain-on-snow surcharge loads on tanks, say tall silo tanks. is this required? section 7.10 of asce 7-05 states that, "for locations where pg is 20 psf or less, but not zero, all roofs with slopes (in deg) less than w/50 with w in feet shall have a 5 psf rain-on-snow surcharge." w is the horiz dist from eave to ridge in feet. my pg is 14.5 psf, and my tank is 20 feet in diameter with a slope of 13 degrees, from eave and meeting at the center of the roof tank. my w/50 would be 10/50 = 0.2 degree. my tank roof slope is 13 degree. according to asce, i do not need the rain-on-snow surcharge, is that right? thank you so much for your advice and feedback. __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]