Hi, I am modelling a substructure in STAAD Pro and after application of loads when i ran analysis i got my raft failed in shear. my allowable shear is 0.675 KPa and the actual shear stress is 1.5 KPa, i have ignored the plates under the columns and even…
1: while analyse and design raft foundation in RAM concept, does RAM concept check the stability of raft foundation against sliding, overturning, floatation, max. base pressure etc?
2: Does RAM concept checks raft foundation against crack width??
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Hi All,
I would need help in the design of a RC raft in RAM concept. The raft sits directly on the soil, that I modelled in RAM with m anually input point springs (usually one spring every meter, in both directions).
I need to carry out an iterative…
I would design it all as a single mat/raft with thickened areas under the columns (if you need them - make sure you check punching shear). Model the column and wall foundation loads as loads on the slab. And model the hydrostatic uplift as a uniform load…
Hi Alex,
Here's my understanding of the situation:
There's about 300psf hydrostatic uplift on the slab, which is fairly constant (and much greater than the slab dead and live load)
The total column and wall loads far exceed the total hydrostatic…