IBC's increase of 1.5 for 2x4s is for wind loading only and takes into account specific sheathing and drywall panel requirements to contribute to the composite and load sharing of lateral wind loads. NDS repetitive member factor covers a broad range of loading (gravity, wind, seismic, combined)...
I have been struggling lately with getting a decent set of plans from my architectural clients (big surprise). I was wondering if anyone had a good list I could present to the architect for information that would facilitate the structural design. Also it would be helpful to site any...
My issue is that I have an open web joist (LH series) that is over stressed about 10%. I believe I have two options at this point.
A. I can "cover plate" the existing joist.
B. try to spread the RTU weight over additional joists by "x-bridging" between additional joist. I think this would...
I have a 5" thick 3.5ksi concrete slab. The contractor wishes to load the slab with a crane used for lifting and placing panels. The maximum outrigger applied load is 115k!! The crane sub insists this is ok if using 6ft x 6ft steel plates to spread out the load. I figure this reduces the...
I like this book.
Designing Floor Slabs on Grade: Step-By-Step Procedures, Sample Solutions, and Commentary (Paperback)
by Boyd C. Ringo (Author), Robert B. Anderson (Author)
First consult your geotechnical report. In foundation recommendations section it will tell you if the foundation should be designed as continuous footings or structural beams. The report should provide bearing pressures for continous footings, if this is the case minimum steel for footings is...