Typical Roof Rafter Spacing

Effects of rafter spacing.

Typical roof rafter spacing.

Rafter spacing depends on the roofing panel size. Use these two tables for roof rafters with a slope of 3 in 12 or less. Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches. Since most sheets are 4 x8 typical rafter spacing are 12 16 24.

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. There is no standard spacing it depends on what size of rafters you want to use and the span of your shed. For standard shed roof rafter spacing see rafter span chart. You may also use metal straps at the end of the rafters or you may use metal tie connectors where the rafter meets the exterior wall plate.

You may use 1 inch by 4 inch cross ties between rafters within the bottom third of the rafter span from the exterior walls at a maximum of 4 feet in distance from the exterior wall plate. This is our ultimate roof rafter guide for people designing and building an off grid cabin or tiny home. The spacing between rafters in a given building is part of the engineering calculations that. What is the standard spacing of a roof rafter.

Learn the 1 rafter design that will guarantee your roof that is safe and strong for years to come. In the us they are typically spaced at fractions of the roof sheathing size. Rafter slope min 15 max 45 degrees. Discover the pros and cons to multiple roof designs.

This demo version is fixed at 1m clear span. This is the distance between rafter centres. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. Stockbyte stockbyte getty images 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.

For instance 2 grade 2x4s at 16 on center will span just over 9. The full version allows any size. Engineered roof trusses are carefully designed structural assemblies that include roof rafters. Usually 400 450 or 600mm but any value can be used up to 610mm max.

The closer the rafters are to each other the stronger the roof will be.