Stiffening Existing Floor Joists
Stiffening Existing Floor Joists
(OP)
I was recently asked to stiffen an existing floor system. They are planning on adding expensive tile, and are worried about cracking. The floor framing is 2x10 joists @ 16" o.c. with 1/2" and 3/4" sheathing spanning 15'3" and are way under for deflection. The product specs recommend l/720 to eliminate any cracking, which is difficult given the span and crowded nature of the basement (increasing depth would be difficult with wiring and duct work). Sistering on one or both sides does not meet the deflection criteria. Any recommendations on stiffening the floor, or avoiding tile cracking?
Thanks
Thanks





RE: Stiffening Existing Floor Joists
RE: Stiffening Existing Floor Joists
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.
RE: Stiffening Existing Floor Joists
RE: Stiffening Existing Floor Joists
Mike McCann, PE, SE (WA)
RE: Stiffening Existing Floor Joists
RE: Stiffening Existing Floor Joists