Roof Framing Spacing

Rafter spacing depends on the roofing panel size.

Roof framing spacing.

Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Depending on the roof design and the roof rafter spacing. Rafter tie or collar tie spacing intervals connection specifications building codes such as the icc s 2012 international building code section 2308 10 roof and ceiling framing typically specify that where rafter ties are used they are required at intervals ranging from 12 to 24 o c. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

This is denoted two ways a 1 3 or 1 4 pitch in fractions and a 6 12 pitch in inches which means the roof rises 6 inches for each 12 inches of run. A framing square is traditionally used for laying out the roof and determining pitch. Discover the pros and cons to multiple roof designs. Pitch is the amount of angle or slope the roof has.

When placing rafters for a tin roof also frequently referred to as corrugated metal or steel it is common to set the distance between rafters based on the size of the roofing panels. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. The same concept holds true for roof trusses. As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes.

This allows the panels to be securely attached to the rafters for maximum stability. Common spacing for trusses on this type of building is often between 2 and 4 feet but trusses built with advanced designs may allow spacing as great as 8 or 12 feet.