Supplementary Document

POCKET REFERENCE GUIDE — 26
Regular Hip/Valley and Jack Rafters
A roof’s Pitch is 9/12 and half the total
span is 6 Feet. Find the lengths of the
Common, Hip/Valley and Jack rafters.
Also find the incremental jack adjustment
and the cut angles. (Jack rafters at 16”
On-center spacing.)
KEYSTROKE DISPLAY
1. Find the Common rafter length:
o o 0.
6 f R RUN 6
FEET 0 INCH
9 i p PTCH 9 INCH
d (Common) DIAG 7 FEET 6 INCH
2. Find the Hip/Valley rafter length and
cut angles; then the incremental jack
adjustment, Jack rafter lengths and cut
angles:
H H/V 9 FEET 7-1/4 INCH
H PLMB 27.94°
H LEVL 62.06°
H CHK1 45.00°
j JKOC 16
INCH
j INCR 1 FEET 8 INCH
j JK 1 5 FEET 10 INCH
j JK 2 4 FEET 2 INCH
j JK 3 2 FEET 6 INCH
STORED