beautypg.com

Calculated Industries 4065 v3.1 User Guide User Manual

Page 66

background image

58 — C

ONSTRUCTION

M

ASTER

®

P

RO

/ T

RIG

/ D

ESKTOP

Common Rafter Length

If a roof has a 7/12 Pitch and a span of 14 Feet 4 Inches, what is
the point-to-point length of the Common rafter (excluding the over-
hang or ridge adjustment)? What are the Plumb and Level cuts?

Note: Run is half the Span.

KEYSTROKE

DISPLAY

1. Find diagonal or point-to-point length of the Common rafter:

o o

0.

7 i p

PTCH 7

INCH

1 4 f 4 i ÷ 2 =

7

FEET

2

INCH

R

RUN 7

FEET

2

INCH

d

DIAG 8

FEET

3-9/16

INCH

2. Find Plumb and Level cuts:

d

PLMB 30.26°

d

LEVL 59.74°

Note: The Common rafter calculation is the "point-to-point" length and does not
include the overhang or ridge adjustment.

Common Rafter Length —

Pitch Unknown

Find the common rafter length for a roof with a rise of 6 Feet
11-1/2 Inches and a run of 14 Feet 6 Inches. Solve for the Pitch in
Degrees and in Inches.

KEYSTROKE

DISPLAY

Find Diagonal and Pitch:

o o

0.

6 f 1 1 i 1 / 2 r

RISE 6

FEET

11-1/2

INCH

1 4 f 6 i R

RUN 14

FEET

6

INCH

d

DIAG 16

FEET

1

INCH

p

PTCH 5-3/4

INCH

p

PTCH 25.64°

This manual is related to the following products: