Need a book? Engineering books recommendations...
RE: Reinforcing for a Metal Building System Slab-on-Grade[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: RE: Reinforcing for a Metal Building System Slab-on-Grade
- From: "Sprague, Harold O." <SpragueHO(--nospam--at)bv.com>
- Date: Tue, 3 Oct 2000 11:05:53 -0500
Dave, There was a guideline that was developed for Butler Manufacturing called "Foundation Design and Construction Manual". It was developed by the people at Computerized Structural Design, Inc. They developed a methodology that given a thrust magnitude calculates the length of hairpin required for a given mesh. You have to transfer the forces from the hairpins into the mesh. The mesh then either uses the slab in friction to resist the thrust or ties the 3 hinged arch together. The UBC 1907.12 values are for slab shrinkage only, and have nothing to do with the applied lateral thrust. There is no real code guidance here. You will just have to use first principles. You will have to develop the reinforcing required based on acceptable performance (crack acceptability), and calculate the flexural reinforcing, the temperature / shrinkage reinforcing, and the reinforcing required to develop the thrust in the hairpins. Engineering unencumbered by the whims of code moguls. Regards, Harold Sprague -----Original Message----- From: Dave Adams [SMTP:davea(--nospam--at)laneengineers.com] Sent: Friday, September 29, 2000 5:55 PM To: seaint(--nospam--at)seaint.org Subject: Reinforcing for a Metal Building System Slab-on-Grade Hello all, I apologize if this is a discussion that has been brought up before. What minimum amount of reinforcing meets Code requirements when hairpins are present in a slab-on-grade with, perhaps, fork lift traffic but no heavy storage rack leg loads? It seems that it would be appropriate to at least provide enough steel required to transfer the hairpin forces and tie everything together (possible unequal distribution of support for forklift loads, etc.), but is there a need to consider the minimums per Section 1907.12 as applicable? This may be one of those "bonehead" questions, but I'd like to know what the consensus is (if there is one). TIA, Dave K. Adams, S.E. Lane Engineers, Inc.
- Prev by Subject: RE: Reinforcing for a Metal Building System Slab-on-Grade
- Next by Subject: Relocating a Steel Tank
- Previous by thread: RE: Reinforcing for a Metal Building System Slab-on-Grade
- Next by thread: RE: free internet access