P
OCKET
R
EFERENCE
G
UIDE
— 33
Irregular Hip/Valley
You’re working with a 7/12 Pitch and half
of 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
o o
0.
1. Find Common Rafter Length:
7 i p
PTCH 7
INCH
1 5 f 7 i R
RUN 15
FEET
7
INCH
d
DIAG 18
FEET
0-1/2
INCH
2. Find Irregular Hip Rafter Length:
8 i Ç H
IPCH 8
INCH
H
IH/V 22
FEET
7-3/8
INCH
3. Find Irregular Jack Lengths:
Ç j
IJOC
16
INCH
j
*
IJ1 14
FEET
11-13/16
INCH
j
IJ2 13
FEET
7
INCH
j
IJ3 12
FEET
2-3/16
INCH
j
IJ4 10
FEET
9-3/8
INCH
j
IJ5 9
FEET
4-1/2
INCH
Etc... Continue pressing
j
until last regular
Jack or “0.” is reached.
* It is not necessary to keep pressing
Ç
when
displaying the Irregular Jack sizes.
STORED
Summary of Contents for Construction Master 5
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Page 46: ...POCKET REFERENCE GUIDE 42 AREA AND VOLUME FORMULAS Area Formulas Dgm AF 100...
Page 47: ...POCKET REFERENCE GUIDE 43 Volume Formulas Dgm VF 101...
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