Irregular Pitch Function [IrPitch]   Irregular Pitch Function

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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