Calculated Industries 4045-B - Manual (Page 41)

User's Guide — 41
Irregular (non-45°) Hip/Valley
& Jack Rafters
You’re working with a 7/12 pitch and
half your overall span is 15 feet 7
inches. The irregular pitch is 8/12. Find
the common rafter length, irregular
hip/valley and jack rafter lengths.
Keystroke Display
[On/C] [On/C] 0.
1. Find Common Rafter Length
7 [Inch] [Pitch] PTCH 7 IN
15 [Feet] 7 [Inch][Run] RUN 15 FT 7 IN
[Diag] DIAG 18 FT 0-1/2 IN
2. Find Irregular Hip Rafter Length
8 [Inch] [Conv] [Hip/V] IPCH 8 IN
[Hip/V] IH/V 22 FT 7-3/8 IN
3. Find Irregular Jack Lengths
16 [Inch] [Conv] [Jack] OC 16 IN
[Conv] [Jack] IJ1 14 FT 11-13/16 IN
[Jack] * IJ2 13 FT 7 IN
[Jack] IJ3 12 FT 2-3/16 IN
[Jack] IJ4 10 FT 9-3/8 IN
[Jack] IJ5 9 FT 4-1/2 IN
Etc......Continue pressing [Jack] until
last regular jack or “0.” is reached.
(Cont’d)
* It is not necessary to keep on pressing
[Conv] when displaying the Irregular Jack
sizes.