Reinforcing Roof Truss Frames Under Load

If you have a stick frame roof there are a few basic techniques that you can use to strengthen your rafters.

Reinforcing roof truss frames under load.

If dead loads must be hung from trusses then extra support can be provided by installing support beams perpendicular to the trusses reducing the span of the bottom chords and increasing their ability to carry the weight load. Reinforce your roof a properly constructed roof in areas subject to high winds has trusses attached to walls with hurricane tiedowns properly nailed sheathing and heavy duty shingles. Compromised trusses can lead to severe structural problems such as bowing exterior walls sagging ridge lines and roof collapse. Snow increases the overall weight of your roof adding to the forces acting on your rafters.

Space them four inches apart along the edges and six inches apart in the middle of the plywood sheathing. These are usually accomplished during a complete re roofing. Strengthening existing roof rafters is a difficult process that often requires professional help. Use wood adhesive underneath the sheathing along the connecting joint with the roof trusses.

Truss framed roof systems with high pitched top chords and horizontal bottom chords have a smaller weak axis moment of inertia than say a flat roof or floor joists and under shear load will tend to deflect more in weak axis bending. Replacement of a two field electrostatic precipitator. Top and bottom chords in compression can buckle laterally if not braced or appropriately reinforced. Reinforcing roof truss frames under load.