Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Punching shear in concrete raft

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Dear All
I am doing a pile supported raft per ACI for a 40-storied tower. In the commentary, R15.5.4  I am required to check punching and one way shear at the column face, but the enhanced limiting shear is not defined.
In previous projects, I have used 5MPa (about 700psi) as the limit when using BS code. A relevent shear limit appears to be minimum of 5.5MPa (775psi) or 0.2fc' which is the limit for shear in corbels at the face of load in ACI. Also I remember using 10 root fc' in US customary units for limiting shear on a concrete section. Any help?
Syed A Masroor,