Irregular Hip/Valley And Jack Rafters - Descending, With On-Center Spacing Maintained - Calculated Industries 4065 User Manual

Irregular Hip/Valley and Jack Rafters — Descending, with
On-Center Spacing Maintained
You're working with a 7/12 Pitch and half your overall span is 4 Feet.
The irregular Pitch is 8/12, and 16-inch On-center spacing is main-
tained on both sides. Complete the following steps:
(1) Find the length of the common rafter;
(2) Reset calculator to 16-inch On-center spacing;
(3) Enter the Irregular Pitch; find the length of the adjoining
"Irregular" Hip (or Valley) and the cut angles;
(4) Find the incremental jack adjustment and the jack lengths on
the "Irregular" Pitch side (16-inch On-center spacing);
(5) Find the cut angles;
(6) Find the incremental jack adjustment and the jack lengths on
the "Regular" Pitch side (16-inch On-center spacing);
(7) Find the cut angles.
KEYSTROKE
1. Find Common rafter length:
o o
7 i p
4 f R
d
2. Enter On-center spacing:
1 6 i ß 5 (o.c.)
3. Find Irregular Hip/Valley rafter length and cut angles:
8 i Ç H (Ir/Pitch)
H
H
H
H
H
62 — C
ONSTRUCTION
M ® P / T
ASTER RO
RUN 4
DIAG 4
OC
IH/V 5
FEET
/ D
RIG ESKTOP
DISPLAY
0.
PTCH 7
INCH
0
FEET INCH
7-9/16
FEET INCH
16
STORED
INCH
IPCH 8
INCH
9-11/16
INCH
PLMB 23.70°
LEVL 66.30°
CHK1 41.19°
CHK2 48.81°
(Cont'd)