floor joists over beams.
floor joists over beams.
(OP)
I inspected a home this weekend that has floor joists supported by wide flange beams. They are offset and lapped about 1'-0" on each other. They are starting to roll over, and was wondering if the normal detail should have been to put some blocking in at the supports. Also, at the end it doesnt look like there was any blocking where they are supported on the walls. there is some x blocking at the mid-span.
Do you think to remedy this to add some blocking? this will help stop them rolling, and stiffen up at the support.
Thanks
Jim
Do you think to remedy this to add some blocking? this will help stop them rolling, and stiffen up at the support.
Thanks
Jim






RE: floor joists over beams.
RE: floor joists over beams.
There should be blocking or a rim joist to nail the floor joists to at the exterior wall.
Mike McCann
MMC Engineering
RE: floor joists over beams.
MSquared, thanks for your response too, glad someone is hanging out on sunday nite when I try and do some work.
RE: floor joists over beams.
RE: floor joists over beams.
Racking of the joists may suggest a bigger problem... No perimeter nailing into exterior rim board would certainly be one but to be honest have never seen the rim board not installed.
If they are rolling over it seems to me that the floor has actually shifted?? Something is going on but no blocking at interior bearing should not cause this, IMO... look at exterior connections in more detail.
And yes... blocking at this point would help.
MDJ
www.windspeedbyzip.com
www.groundsnowbyzip.com
RE: floor joists over beams.
RE: floor joists over beams.
Never, but never question engineer's judgement
RE: floor joists over beams.
RE: floor joists over beams.
BA
RE: floor joists over beams.
Joists shall be supported laterally at the ends by full-depth solid blocking not less than 2 inches nominal in thickness; or by attachment to a full-depth header, band or rim joist, or to an adjoining stud or shall be otherwise provided with lateral support to prevent rotation."
There should be blocking at some point along the beam if not every bay. The fact that the joists have rolled already sounds like the bigger problem.