Continuous Footing Design at Tilt wall Panel Jambs
Continuous Footing Design at Tilt wall Panel Jambs
(OP)
I'm designing a tiltwall bldg that is essentially swiss cheese - tons of opngs in most all of the panels. In looking at the continuous footing design under the panels, is it fair to ignore the opngs and calc required allowable bearing based on a solid wall w/ whatever other gravity lds are framing in on a per ft basis? Or do I have to look at each individual panel jamb (already did for the actual jamb design...) and figure out the reaction at the base of the jamb, divide it over the jamb length and provide a ftg for that load? If it's the latter, it means really wide spread ftgs at every jamb, which doesn't seem normal.






RE: Continuous Footing Design at Tilt wall Panel Jambs
It may be more economical in your case to eliminate portions or all of the strip footing at the openings, but if the openings are overhead doors and you may have truck or forklift traffic, I like keeping some type of reduced-width continuous footing there anyway to support the thickened edge of the slab. Some combination of these may suit your situation the best...
RE: Continuous Footing Design at Tilt wall Panel Jambs
RE: Continuous Footing Design at Tilt wall Panel Jambs
1. Size and continuity of foundation.
2. Method of analysis.
If you analyze the footing as if the wall is continuous, this is simple inverted T one-way footing analysis, trivial for longitudinal reinforcing. However, you will miss the large negative moments along the footing.
Use your favorite analysis program (RISA, SAP...) and run a continuous beam on soil springs (bound this high and low) with concentrated loads at the jambs.
You might get hammer heads below the jambs.
RE: Continuous Footing Design at Tilt wall Panel Jambs
Welcome to the site. I gave an answer in another forum. In accordance with site protocol, please avoid double posting in the future.
RE: Continuous Footing Design at Tilt wall Panel Jambs
Check the worst case and see if it works without widening/undue reinforcement.
RE: Continuous Footing Design at Tilt wall Panel Jambs
RE: Continuous Footing Design at Tilt wall Panel Jambs