Calculated Industries 4090 - Manual (Page 90)

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Sheathing Cut
You have framed an equal Pitch roof and need to apply the roof
sheathing. Find the distance from the corner of the sheathing so that
you can finish the Run at the Hip rafter and cut the material. The
Pitch is 6 Inches and you are using 4-Foot by 8-Foot plywood, with
the 8-Foot side along the plate.
KEYSTROKE DISPLAY
1. Enter Pitch:
o o 0.
6 i p PTCH 6
INCH
2. Enter width of plywood:
4 f d R 4
FEET
0
INCH
3. Find length of sheathing:
R X 3
FEET
6-15/16
INCH
Regular Hip/Valley and Jack Rafters
You’re working with a 7/12 Pitch, and half your total Span is 8 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 Regular Jack rafter lengths and cut angles (Jack
rafters at 16 Inches On-Center spacing).
KEYSTROKE DISPLAY
1. Find Common rafter length and Plumb and Level cuts:
o o 0.
8 f 5 i R X 8
FEET
5
INCH
7 i p PTCH 7
INCH
d R 9
FEET
8-15/16
INCH
d PLMB 30.25644°
d LEVL 59.74356°
(Cont’d)