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two way flat plate system
i need to analyse a two way flat plate parking garage. since the span do not follow direct design method, i want to model it in staad and obtain design moments and shears.
can i get some tips. shall i model slab as beam frame. assign .25 cracked m.o.i? column joint with slab as torsional member? what size?

is this a proposed or an existing garage?
mike mccann
mmc engineering
i would use the equivalent frame method (efm). each grid line is modeled as an "equivalent frame." staad probably will automatically assign reduced stiffness values to the spans and to the columns (something like 0.35ig and 0.7ig respectively). follow aci regarding torsional stiffness where the slab meets the column.
daveatkins
equivalent frame is likely the way to go; you have to be careful of column spacing for both parking stalls as well as location of car doors to maximise utility.
dik
msquared48
it is existing garage

2009-09-16, 04:22 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	wo way flat plate system two way flat plate system i need to analyse a two way flat plate parking garage. since the span do not follow direct design method, i want to model it in staad and obtain design moments and shears. can i get some tips. shall i model slab as beam frame. assign .25 cracked m.o.i? column joint with slab as torsional member? what size? is this a proposed or an existing garage? mike mccann mmc engineering i would use the equivalent frame method (efm). each grid line is modeled as an "equivalent frame." staad probably will automatically assign reduced stiffness values to the spans and to the columns (something like 0.35ig and 0.7ig respectively). follow aci regarding torsional stiffness where the slab meets the column. daveatkins equivalent frame is likely the way to go; you have to be careful of column spacing for both parking stalls as well as location of car doors to maximise utility. dik msquared48 it is existing garage __________________ 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]