Beams (IB) Floor Installation Notes
When constructing an IB floor
system, use the Custom Layout, Guides and the following notes
for proper installation.
- This layout is for the
placement of International Beams products
- Before laying out floor
system components, verify that IB I-joist flange widths
match hanger widths. If not, contact your
- Building Designer must
verify all spans, locations and loadings for joists and
beams. Project Coordinator to verify all lengths and
quantities before ordering.
- Except for cutting to
length, NEVER cut, drill or notch the top or bottom flange
of the joists.
- Do not cut, drill or
notch LVL beams.
- Refer to IB's
Installation Guide for proper installation
- Contractor to coordinate
with mechanical, electrical and architectural drawings for
the locations and sizes of floor / roof openings that will
affect the location of joists and beams.
- Install IB I-joists so
that top and bottom flanges are within 1/2 inch of true
- IB I-joists must be
anchored securely to supports before floor sheathing is
attached, and supports for mulitple-span joists must be
- All joist and beams must
have full bearing contact in hangers. Seat IB I-joists
firmly in hanger bottoms to minimize settlement. Also
apply construction glue into seat of hangers during the
installation of the joists and beams.
- Minimum bearing lengths: 1 3/4 inches for
end bearings and 3 1/2 inches for intermediate
- Leave a 1/16 inch gap between the IB I-joist end and a
- Blocking to be IB
I-joist unless otherwise noted.
Contractor is responsible for
the safety of workers during erection of IB
- Restrain ends of floor
joists to prevent rollover. Use rimboard or
equivalent, rim joists or IB I-joist blocking
- Provide permanent lateral
support of the bottom flange of all IB I-joists at interior
supports of multiple-span joists. Similarly, support
the bottom flange of all cantilevered IB I-joists at the
end support next to the cantilver extension. In the
completed sructure, the gypsum wallborad ceiling provides
this lateral support. Until the final finished
ceiling is applied, temporary bracing or struts must be
- Never install IB I-joists
where they will be permanently exposed to weather, or where
they will remain in direct contact with concrete or