Roof Truss Repair Gusset Plate Design

For truss repairs to be effective the gusset plates must be in contact with the wood members and the nails must extend through all members.

Roof truss repair gusset plate design.

The repair and modification of metal plate connected wood trusses can be a very complicated subject because each situation must be analyzed individually. There are three parts to the roof truss that you have to know. Had a gusset plate removed is reduced by 50. Thus the replacement plate must be sized larger than the original to allow the plate to connect into.

Trusses are the major engineered wood component used today with 63 7 market share for roof trusses and 31 7 market share for floor trusses. Metal connector plates can sometimes be pressed back when the teeth are still in alignment with the original holes. When specifying the material in a repair detail the building designer or truss designer has a number of options including plywood or oriented strand board osb gussets. Roof truss repair details.

Then there is the top chord or rafters that are angled to make the roof pitch. Standard repair detail for damaged or missing plates on a gable stud. Lumber many species and grades available typically 2x nominal width is used for. See gusset construction below.

The building codes prohibit the cutting notching drilling or otherwise altering of truss members or components without written approval from a registered design professional. Truss gusset plate screening 605 truss structures carrying highways in nys nycdot and authorities not included 350 out of 605 58 are locally owned 145 bridges with stress increase in gusset plates that required analysis 42 out of 145 requiring analysis 29 are locally owned. Portions of the top chord bottom chord and web members at the ends of four 60 foot long hybrid warren trusses were partially consumed by fire figure 5 the trusses were a parallel wood chord truss 4 feet deep with 1 inch diameter hollow steel pipes for the web members. Finally there are the gussets that hold the framed truss together.

The bottom chord which is the bottom of the framed truss. Standard repair detail to pad bottom chord. It is important not only to calculate an. Truss repair design drawing are used in the repair.