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masonry wall design- ig and icr
i would be very grateful if someone could direct me to any websites which give information on the calculation of the gross moment of inertia (ig) of masonry units along with the calculation of the cracked moment of inertia (icr). i require this info for designing cmu walls using the strength design method in accordance with ubc:1997.
regards
mike
for an uncracked section including steel:
ig = [b(kd)^3]/3+[b(h-kd)^3]/3+(n-1)as(d-kd)^2
for many of the variables think of a reinforced concrete section.
w/o steel: ig = [bh^3]/12
for a cracked section:
icr = [b(kd)^3]/3+(npbd)(d-kd)^2 where p is rho.
this information is found in reinforced masonry design by schneider and dickey.
qshake
thanks for the swift response and the info
regards
mike

2009-09-10, 12:55 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	masonry wall design- ig and icr masonry wall design- ig and icr i would be very grateful if someone could direct me to any websites which give information on the calculation of the gross moment of inertia (ig) of masonry units along with the calculation of the cracked moment of inertia (icr). i require this info for designing cmu walls using the strength design method in accordance with ubc:1997. regards mike for an uncracked section including steel: ig = [b(kd)^3]/3+[b(h-kd)^3]/3+(n-1)as(d-kd)^2 for many of the variables think of a reinforced concrete section. w/o steel: ig = [bh^3]/12 for a cracked section: icr = [b(kd)^3]/3+(npbd)(d-kd)^2 where p is rho. this information is found in reinforced masonry design by schneider and dickey. qshake thanks for the swift response and the info regards mike __________________ 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]