Use and Care Manual

EWP Hangers
203
MiTek
®
Product Catalog
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EWP Hangers
Support Height & Lateral Stability
Hangers for joists without web stiffeners must support the I-Joist’s top
ange and provide lateral resistance with no less than 1⁄8" contact.
MiTek recommends that hangers for joist with web stiffeners should
be 60% of the joist height for stability during construction. If this cannot
be accomplished, potential joist rotation must be resolved by other means.
(Top ange support requirements can be veried in this section charts under Web stiffener Reqd. column.)
Correct Hanger Attachment to Nailer
A nailer or sill plate is considered to be any wood member attached to a
steel beam, concrete block wall, concrete stem wall, or other structure
unsuitable for nailing, which is used as a nailing surface for top mount
hangers to hold beams or joists.
Nailer Sized Correctly
Top ange of hanger is fully supported and recommended nails have full
penetration into nailer, resulting in a carried member hanging safely at the
proper height.
The nailer must be sized to t the support width as shown and be of
sufcient thickness to satisfy recommended top ange nailing requirements.
A design professional must specify nailer attachment to steel beams.
Top ange not fully supported can cause
nail breakout. Or, by fully supporting top
ange, hanger is tilted back, causing
lifting of carried member which results
in uneven surfaces and squeaky oors.
Loading can cause cross grain breaking
of nailer. The recommended nailer
overhang is 1⁄4" maximum per side.
Top ange nailing cannot fully penetrate
nailer, causing reduced allowable loads.
Never use hangers which require multiple
face nails since the allowable loads are
dependent on all nail holes being used.
Nailer Installations
Wrong Nailer Size Causes Component Failure
Correct Attachment
Too Narrow
Too Wide
Too Thin
!!!
Web stiffener
>1/4"
1/8" maximum gap
60%
min.
of joist
depth
Joist
depth
1/4"
max
Avoid direct contact
between hangers and
steel beams which may
cause squeaks
For hangers less than 60% joist depth, install
framing angles, one on each side, for lateral stability.
Refer to pages 108-111 for angle selections.
Resist lateral movement
1/8" minimum