The Irregular Pitch Function is for the storage and recall of a Minor (Irregular) Roof Pitch. Its value is used by the [Hip/V],
[IrJack] and [Jack]
Functions. Note that BuildCalc currently does not have provisions
for irregular plan angles (roofs where the plan angle of the corner is
not 90°).
If the Hip or Valley is the junction of two roofs of different pitches,
then the second (irregular or minor) roof pitch is entered into the
[IrPitch] location prior to using the [Hip/V] function.
Example
Irregular Hip/Valley Rafter Calculation
Input
[clr][clr]
12
[Feet] Rise
15 [Feet]
Run
30
[Conv][IrPitch]
[Hip/V]
[Hip/V]
[Hip/V]
[Hip/V]
[Hip/V]
[Hip/V]
Display
0
Rise
12ft
Run
15ft
Irregular (Minor)
Pitch
30.00°
Irregular
Hip/Valley Rafter Length
28ft 3- 5/8in
Plumb Cut
25.09°
Level Cut
64.91°
Cheek Cut 1
54.18°
Cheek Cut 2
35.82°
Irregular Pitch
6- 15/16in
Illustration of Plumb and Level Cut Angles
Illustration of Cheek Cut Angles
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