jdbpe
Structural
- Aug 4, 2005
- 28
I have a new one story structure addition that is two hundred feet wide and three hundred feet long to be constructed against and parallel to face of existing two story structure. The existing structure has a basement at bottom of footing 20 feet below grade. The basement footing heel projects eight feet from outside face of wall into new addition space. The new addition is a slab on grade floor and a steel frame structure with spread footings. I intend to cantilever the roof structure from columns set 16 feet away from existing building wall to avoid surcharging existing footing. However, I still need to support new stud wall that will but against existing brick wall. Slab-on-grade should be okay on this soil which is fill from previous basement construction. Do I need to provide a cantilevered grade beam system to catch new grade beam that runs along exist building face? Thanks