upset grade beam
upset grade beam
(OP)
ideas for handling upset grade beam in riged frames
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RE: upset grade beam
I for one would require more info to understand the problem.
RE: upset grade beam
RE: upset grade beam
Mike McCann
MMC Engineering
RE: upset grade beam
RE: upset grade beam
Mike McCann
MMC Engineering
RE: upset grade beam
A few things to think about.
1. how does the beam get below frost depth if it is an upstand?
2. As you alluded to, there is a horizontal reaction from the frame at the top of the beam which will cause a torsion in the grade beam, how is this taken out?
3. if the connection to the top of the grade beam is analysed as a pin then the portal columns will get shorter and the portal frame should be reanalysed with the increased EI/l of these columns. Under gravity loads these columns will attract more moment to the knee connections.
RE: upset grade beam
RE: upset grade beam
The forces on the underside of your grade beam can be huge!
RE: upset grade beam