Unequal Sloped Roofs

Major pitch angle minor pitch angle span plate line difference calculate major minor runs theoretical plate line span theoretical span span plate line difference tan minor pitch angle plate line difference run span theoretical span major run.

Unequal sloped roofs.

Put on a pair of work gloves. 9 tips to understand revit roofs. This slope and skew calculator makes it easy by performing all of the necessary trigonometry for each hanger condition in the roof. Unequal pitch roof trigonometry calculating unequal pitched roofs is easy if you know what trigonometry functions to use.

The formulas below use the law of sines to calculate the unknown length or angle. The formulas below use the law of sines to calculate the unknown length or angle. Major pitch angle minor pitch angle major run calculate minor run minor run major run tan major pitch angle tan minor pitch angle minor run major run major pitch minor pitch known variables. Drawing a superimposes the common rafters for the two roof pitches and illustrates the problem that occurs when roof layout starts at the outside edge of the exterior walls.

Unequal pitch roof trigonometry calculating unequal pitched roofs is easy if you know what trigonometry functions to use. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. The rafter tools app irregular hip rafter function calculates the correct king common rafter length for unequal pitched hip rafter roofs. Major pitch angle minor pitch angle minor run calculate.

Where roofs of unequal pitch join it requires careful layout to create equalwidth soffits with equal height fascias. Create a roof slope using slope arrows. It is advisable to prepare a framing plan as shown in fig. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.