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.

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. Use wood adhesive underneath the sheathing along the connecting joint with the roof trusses. Replacement of a two field electrostatic precipitator. Without altering the roof structure of an industrial boiler plant a long span steel truss frame was modified in place to support heavier loads.

Snow increases the overall weight of your roof adding to the forces acting on your rafters. 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. Top and bottom chords in compression can buckle laterally if not braced or appropriately reinforced. Compromised trusses can lead to severe structural problems such as bowing exterior walls sagging ridge lines and roof collapse.

Reinforcing roof truss frames under load. The owners of an industrial boiler plant in the northeast were required to reduce particulate emission levels from coal fired boilers. Strengthening existing roof rafters is a difficult process that often requires professional help. These are usually accomplished during a complete re roofing.