Framing Anchors, Hangers, and Ties Information

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Framing anchors, framing hangers, and framing ties are used for anchoring rafters and trusses to plates, floor and ceiling joists to headers, and solid blocking to plates. Framing anchors are typically made from sheet metal and have prepunched holes to accept nails. Anchors provide an accurate and positive connection between wood pieces by allowing the nails to secure the framing anchor to load laterally, rather than in partial withdrawal.

Applications

Framing anchors are commonly used in framing construction for protection against strong winds and other forces. Selecting framing anchors, framing hangers, and framing ties requires an understanding of application requirements. Anchors are suitable for most joints in framing wood 2 ft. (38 mm) and thicker. The load capacity for framing anchors is affected by the steel thickness selected. 18-gauge zinc-coated sheet steel is common in standard framing anchors. For medium or heavy-duty anchors, the zinc-covered sheet steel is often 12-gauge or 7-gauge. Framing anchors come with special nails that are required for use with each anchor to provide the load carrying capacity and avoid eccentricity.

Specifications

Framing anchors, framing hangers, and framing ties include products for connecting joists and purlins. Hangers are used to connect joists and purlins to supporting wood pieces. They can be used to reduce the overall depth of flooring or a roof assembly, or to reduce space below the framing when joists are adjacent to headers—rather than on top of them. Joists and purlin hangers are manufactured from light gauge galvanized sheet metal. Like framing anchors, hangers require special nails for the specified number of nails to be used for load-carrying capacity. Typical hanger sizes for wood joists range from 2 ft. x 4 ft. (38 mm x 89 mm) to 4 ft. x 14 ft. (89 mm x 377 mm).

Types

Framing anchors, framing hangers, and framing ties are connectors. Ties come in many different shapes, including:

angle
bracket
corner connection
flat tie connectors
T-shape

There are many different types of ties available, depending on the application. Uses for ties include:

providing an easy to install connection between the stud and the upper or lower tracks;
providing a tension connection between a stud and a plate member(s);
providing protection against wind and seismic forces;
offering rigidity and support;
fitting with several truss chords to give uplift resistance.