Strengthening Roof Framing

Your roof is your first line of defense.

Strengthening roof framing.

But the rafters must resist bending flexion where they are relatively weaker. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. To strengthen this frame shorter vertical bracing known as cripples can be added. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.

The builder had claimed an additional sum of money for roof strengthening works and anecdotally i am informed that the client received a call from the builder when discovering that the roof rafters were structurally unsound and indeed they were. This is a fairly basic project that can help protect your roof but consult a structural. Building framing begins with the roof framing structure. Collar ties rafter ties tension beams structural ridge beams.

Strengthening existing roof rafters is a difficult process that often requires professional help. You can strengthen the roof to prevent damage by adding braces to the roof rafters inside your attic. The bottom horizontal of the triangular truss form which corresponds to the joists in stick framed roofs is known as the lower cord. Some of these can support the roof and prevent ridge sagging and wall spreading.

This open triangle requires bracing and the center vertical brace that supplies this is known as the king stud. Line length is the hyptenuse of the triangle whose. The cross tie exerts its strength in tension so it can be made of smaller size lumber such as a two by four. Figure 2 2 roof framing terms.

This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Fortified roof construction standards were developed based on extensive field and lab research of structural damage caused by wind. A typical peaked roof frame consists of two rafters with a cross tie to keep the tops of the walls from spreading. In fact research shows the roof is the most important component of every building as well as the most vulnerable.

At some point in the buildings history changes had been made to the roof pitch and or height.