Raft Foundations Design
Raft Foundations Design
(OP)
Hey guys, so my ex-colleague designed a raft foundation using software (Note that this software unable to convert drop panels to strip), and so it has drop panel for every column (for the purpose of punching shear), and obviously there are different depth for the drop panel that depends on the loading of the column. My superior told me to change the individual drop panel into several strips of drop panel so to reduce the depth of the panels. Now then I have converted the drop panels into strips, I would like to ask how do I determine the new depth of the strips? As the strips were based on the drop panels, there are various depths, and my superior intended to standardize the depth (there are some strips with 800mm and some 500mm, superior said that the difference were too much to change everything to 800mm) to make it easier for the contractor. Hope to get some answers from all of you.
Thanks.
P/S : Picture for reference. (The slab is 150mm thick)
Best regards,
-TR
Thanks.
P/S : Picture for reference. (The slab is 150mm thick)
Best regards,
-TR






RE: Raft Foundations Design
RE: Raft Foundations Design
I do not believe you can justify a 150mm slab depth if it is a raft slab. Sounds far too thin to me.
RE: Raft Foundations Design
Dik
RE: Raft Foundations Design
I assume these drop panels/strips are below the slab, and the ground is the formwork!
RE: Raft Foundations Design
Dik
RE: Raft Foundations Design
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Raft Foundations Design
Dik