Roof Truss Repair Gusset Plate Design

Standard repair detail to pad top chord to match roof plane 2 1 2 minimum mii rep11.

Roof truss repair gusset plate design.

Box beam design repair. See gusset construction below. Standard repair detail for damaged or missing plates on a gable stud. The building codes prohibit the cutting notching drilling or otherwise altering of truss members or components without written approval from a registered design professional.

The repair and modification of metal plate connected wood trusses can be a very complicated subject because each situation must be analyzed individually. 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. There are three parts to the roof truss that you have to know.

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. Had a gusset plate removed is reduced by 50. Finally there are the gussets that hold the framed truss together. 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.

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

Standard repair detail to pad bottom chord. Lumber many species and grades available typically 2x nominal width is used for. Then there is the top chord or rafters that are angled to make the roof pitch. Thus the replacement plate must be sized larger than the original to allow the plate to connect into.