Click here for descriptions, formulas and diagrams of the more commonly used roof framing angles. More extensive lists of the trigonometric Hip/Valley roof framing and joinery angle formulas known to date are in the first three links below.

    Factored Formulas is the result of efforts to express all known Hip / Valley angle formulas as vector products in terms of only four factors. The resulting equations are used in the Javascript version of  Lag .

    The TFA Program referred to in Alternate LAG Program Applications is the original version of the LAG worksheet.

Framing Angle Formula Index.html

Framing Angle Formula Index.html

Framing Angle Formula Index.doc

Framing Angle Formula Index.pdf

Factored Angle Formulas.pdf
Factored Angle Formulas.doc

Trigonometric Relationships.html

Trig Reduction Formulas.html