Simpson JHA270/47 Joist Hanger
Joist Hangers with Adjustable Height Straps
◦JHA’s are a one piece, non-welded, joist hanger for supporting timber joists from timber members.
◦Manufactured under the BM TRADA Q-Mark Certification Scheme.
◦A galvanised joist hanger that provides greater joist support combined with ease of installation
that can be adjusted to suit height of joist.
◦Simpson’s exclusive double shear nailing feature guides nails into joist at a 45° angle. All hangers in this
series have double shear nailing. This patented innovation distributes the load through two points on
each joist nail for greater strength. It also allows the use of fewer nails and faster installation.
◦This provides easier nail driving as the installer doesn’t need to swing the hammer sideways. The nail
is supported at the side of the hanger and at the header which generates higher load capacities.
◦Wider strap provides more surface area on the supporting timber and allows increased nail spacing,
enhancing the performance of the critical hanger-to-support part of the connection.
◦Minimum and maximum nailing schedules are stamped into the strap of most models providing
correct installation information for site operatives.
◦Speed-prong holds the hanger in position to allow easier attachment. The installer no longer
has to try to hold hanger, joist and nail with one hand and swing a hammer with the other!
◦The model number and size is stamped into the seat of most models for easy identification
of the hanger, even after installation.
JHA270—0.9mm pre-galvanised mild steel to BS EN 10327:2004 DX51D+Z275;
JHA450—1.5mm pre-galvanised mild steel to BS EN 10327:2004 DX51D+Z275.
Three different installation methods are available depending on the availability of nailing surface.These hangers may be used for weld on applications.
The minimum required welds for the top flanges are 5mm x 38mm for WPU and 6mm x 63mm for GLTV, fillet welds located at each end of the top
flange. Weld-on applications produce maximum allowable loads listed. Uplift loads do not apply for this application.
All nails must be applied according to the table. The nails used for the joist attachment must be driven at an angle so that the nails penetrate through the corner of the joist into the header.
For a lower installed cost the minimum nailing schedule can be used when the maximum nailing load capacity is not needed. The nails used for the joist attachment must be driven at an angle so that the nails penetrate through the corner of the joist into the header. A minimum wrap over of 55 mm is required.
for applications where the hanger extends below the support. Install top, face, and joist nails according to the table. A minimum wrap over of 55 mm is required.
Because these hangers are fully die-formed they cannot be modified.
Simpson JHA Joist Hanger Pdf Information Sheet