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2. Enter width of plywood:
4
Feet
Diag
3. Find length of sheathing:
Run
REGULAR HIP/VALLEY AND JACK RAFTERS
Example: You're working with a 7/12 Pitch, and half your total span is 10 Feet 5 Inches.
1. Find point-to-point length and cut angles for the common rafter;
2. Find the length and cut angles of the adjoining Hip (or Valley) and;
3. Find the Incremental Jack Adjustment, Regular Jack Rafter lengths and cut angles (Jack Rafters
at 16-Inch On-center spacing).
KEY INPUT & DISPLAY
1. Find Common rafter length and Plumb and Level cuts:
On/C
On/C
1
0
5
Feet
7
Inch
Pitch
Diag
Diag
Diag
2. Find Hip/Valley rafter length and cut angles:
Hip/V
Hip/V
Hip/V
Hip/V
3. Find regular incremental Jack adjustment and regular Jack rafter lengths and cut angles:
Jack
Jack
Jack
Jack
Jack
Jack
Jack
Jack
Jack
Inch
Run
Page 37
DIAG 4
0
Feet
Inch
RUN 3
5-7/16
Feet
Inch
0
RUN 10
5
Feet
Inch
PTCH 7
Inch
DIAG 12
0-11/16
Feet
Inch
PLMB 30.26˚
LEVL 59.74˚
H/V 15
11-1/4
Feet
Inch
PLMB 22.42˚
LEVL 67.58˚
CHK1 45.00˚
JKOC
16
*
STORED
Inch
INCR 1
6-1/2
Feet
Inch
JK1 10
6-3/16
Feet
Inch
JK2 8
11-11/16
Feet
Inch
JK3 7
5-1/8
Feet
Inch
JK4 5
10-5/8
Feet
Inch
JK5 4
4-1/8
Feet
Inch
JK6 2
9-9/16
Feet
Inch
JK7 1
3-1/16
Feet
Inch
Cont'd on page 38
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