Hangers

Considerations for choosing a joist hanger include nail location for proper alignment with joist flanges and nail size to prevent splitting of the flange or web stiffeners. Hanger capacity for all products must be evaluated based on the type of member supporting the hanger (i.e. wood beam, nailer or stud wall). Additionally factory modifications ordered for specific field conditions typically reduce hanger capacity.

Two manufacturers have addressed the above issues, including reductions for factory modifications. Simpson Strong-Tie™ and USP provide wood connector catalogs. The latest version of each catalog may be used for selecting hangers.

Each hanger selection must also be verified to insure adequate bearing length is provided for the supported product. LVL and glulam perpendicular-to-grain bearing capacities vary with product, and are provided in RedBuilt™ literature. I-joist bearing or reaction capacity is a function of bearing length and the application of web stiffeners. Red-I™ reaction capacities are provided in RedBuilt™ literature.

For assistance in choosing a Simpson Strong-Tie™ hanger, go to the Hangers tab after designing the joist.

Note: Hanger manufacturers may also require I-joist web stiffeners to provide rotational support, when the hanger does not adequately furnish lateral support to the I-joist top flange. See hanger manufacturer's literature.