A truss connector plate, or gang plate, is a kind of
CONNECTOR PLATE A galvanized steel plate with teeth punched out on one side, which is hydraulically pressed or rolled into both sides of a joint to fasten chord and web members together.
Roof trusses are a rigid and strong framework which is made from wooden members, like 2” x 4” these are then fastened and held together by metal connector plates. The framework is accountable for your roof shape and for supporting the materials of your roofing.
Truss Terminology
Timber Truss: A framework constructed with timber of uniform thickness and fastened together in one plane by connectors such as metal nailplates, bolts, plywood gussets, or other similar devices.
In many cases, builders can connect a truss using two or three nails. However, counties with good building codes, as well as contractors who take pride in making quality homes, use hurricane ties or a similar product to make the connection more secure. This is when a 6” TimberLOK screw can help.
A truss that is assumed to comprise members that are connected by means of pin joints, and which is supported at both ends by means of hinged joints and rollers, is described as being statically determinate.
Once a truss is in place, it must be temporarily braced to prevent movement that could lead to misalignment or collapse. Temporary bracing involves installing diagonal braces that stabilize the trusses until permanent sheathing and bracing are applied.
A truss connector plate, or gang plate, is a kind of tie. Truss plates are light gauge metal plates used to connect prefabricated light frame wood trusses. They are produced by punching light gauge galvanized steel to create teeth on one side.
Nail the bracing into the top chord of each truss, making sure to follow the truss manufacturer's layout while setting trusses. Install diagonal bracing, representing a “W” pattern throughout the structure (See red blocking in Diagram 1). Lateral bracing alone is not adequate to secure roof trusses before sheathing.
Truss members are connected to each other rigidly, by welding or joining the ends with a gusset plate. This makes the connecting joints rigid but also makes the truss difficult to analyze.
The truss will be anchored with nails, powder driven fasteners, or masonry anchors.
A metal purlin is a lightweight, horizontal beam or bar that is used for structural support in roofing. In addition to providing support, metal purlins also increase a building's resistance to heavy winds. Purlins are a key component to the secondary frame of commercial, residential and industrial metal buildings.
In standard heel applications of roof trusses, the bottom chord is cut on each end at an angle consistent with the roof pitch of the truss. This creates additional surface area for the two members to transfer forces and allows for them to be plated together, creating a strong, resilient joint.
Dowel Joint
Create this joint by drilling opposing holes into the two wooden pieces and placing a wooden dowel in the holes, typically with adhesive. The dowel acts as a mechanical fastener by bonding with the glue while also helping to align the pieces. Furniture builders commonly use dowel joints to make furniture.
Truss plates are staggered-tooth metal connector plates designed to connect wood truss members together. The teeth of these connector plates are punched in pairs at right angles to securely connect the pieces of rafter trusses or floor trusses at the joint, allowing for the transfer of loads through the structure.
Trusses are a series of triangles fastened together with gusset plates. The outside members of a truss are called chords while the inner pieces are known as webs.
All truss members are idealized as straight elements, and they are connected only at their ends, meaning each member behaves as a straight two-force member. All joints are frictionless pin joints. Loads (external forces) are only applied at the joints. The weight of the members is assumed negligible.
A splice is the point where two chord members are joined together by a metal connector plate (truss plate). It can occur at a panel point or between panel points depending on the specific design for that truss and the preferences of the truss technician and/or truss manufacturer.
Continuous diagonal web bracing should be installed along all truss bearing lines, unless the trusses are sheathed or otherwise restrained at that location.
Bracing ensures that trussed rafters maintain a rigid, secure and stable roof structure.
Design engineers normally try to keep it at 45°to 60° as it is the best compromise.
Purlins: These are the members which are spanning on the roof frames to support the roof coverings and runs parallel to ridge to connect different trusses situated in the longitudinal direction.
The WFCM defines a rafter tie as a structural framing member located in the lower third of the attic space that ties rafters together to resist thrust from gravity loads on the roof.