Roof Angle Terminology

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General Roofing Terminology Below You Will Find The Major Roof Components Illustrated And Briefly

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The angle formed where two sloping roof surfaces intersect.

Roof angle terminology.

The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34. Glossary of roofing terms. The angle a roof surface makes with the horizontal expressed as a ratio of the units of vertical rise to the units of horizontal length sometimes referred to as run. The rafters equal the span 60.

The external angle at the junction of two sides of a roof whose supporting walls adjoin. The rafter length is 3 4 the span about 48. Commonly used roof pitches were given names such as greek. Joist in a flat roof a horizontal structural member over which sheathing is nailed.

The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16. Because this collects the water run off from two roofing planes it is generally protected by metal valley flashing. The v cut angle along the junction of two slopes of a roof. For english units of measurement when dimensions are given in inches slope may be expressed as a ratio of rise to run such as 4 12 or as a percent.