Design of Foundation for Steel Structures
Design of Foundation for Steel Structures
(OP)
Hi All. I am working on a project that involves design of the foundation system for a steel frame building. The building itself has already been deisgned by a steel company.
I have an idea of work involved. However, I would really appreciate it if any of you could direct me to some references that would assist me.
Thanks a lot.
I have an idea of work involved. However, I would really appreciate it if any of you could direct me to some references that would assist me.
Thanks a lot.






RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
There's no way that you'll go from what sounds like "I've never designed a foundation in my life -- please help." to being able to design it based on our advice.
DBD
RE: Design of Foundation for Steel Structures
http://w
Metal Building Systems: Design and Specifications
by Alexander Newman
Hardcover: 576 pages
Publisher: McGraw-Hill Professional; 2 edition (November 28, 2003)
Language: English
ISBN: 0071402012
Product Dimensions: 9.6 x 7.3 x 1.8 inches
Shipping Weight: 2.6 pounds.
RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
DBDavis, I do have a supervisor and he can guide me well enough for me to design this foundation system. However, I was just looking to see if there were any references that could help me accelerate my learning curve. I'm sorry if I offended you by my question. I wasn't looking to leech off you to finish this project. Thanks anyway.
Also, let me make my question a little less vague. I was told that we could use "hairpins" wrapped around the anchor bolts to account for the outward thrust from the frame. Could anyone please explain the basic action of these hairpins?
Thanks again.
RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
Regards,
Lutfi
RE: Design of Foundation for Steel Structures
RE: Design of Foundation for Steel Structures
Foundation design basics: 1) determine geometry (done), 2) assess allowable soil bearing or get from a geotech, this will determine your system. 3) determine initial column support dimensions on gravity loads, then check uplift then shear. 4) design grade beams and slabs from loads and soil properties, as needed.
Hairpins shouldn't be relied on to resist base shear. Don't forget to check your anchor bolt reactions to ACI 318-02 Appendix D.
RE: Design of Foundation for Steel Structures
You are saying that PCA notes do not recommend hairpin dowels? If the bolts can transfer the shear to the slab, what keeps the slab from "tearing" out? Or is the slab bearing against the grade beam?
RE: Design of Foundation for Steel Structures
PCA notes are a helpful reference for concrete design, but I'm not sure if they address hairpins.
I consider hairpins a matter of "good engineering practice" for continuity of force transfer, not needing a design calc. Adequate development of slab edge reinforcement and/or grade beams should accomplish the same thing. UcfSE also mentioned not using a slab (vs. a bigger footing) to resist column base shear, to avoid a tearout.
This also is in line with the (unfortunate) result of the ACI 02 update - use more concrete. With price and availability of each these days, I'm not sure how much it matters. Either way, I'm willing to bet a #4 with 8' long legs @ 45 degrees will do the job w/o calculation.