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TM
Irregular Hip/Valley and Jack Rafters —
-
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;
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 DISPLAY
1. Find Common rafter length:
o o 0.
7 i p PTCH 7 inch
4 f R RUN 4 feet 0 inch
d DIAG 4 feet 7-9/16 inch
2. Enter On-center spacing:
1 6 i ß 5 (o.c.) OC
STORED
16 inch
3. Find Irregular Hip/Valley rafter length and cut angles:
8 i Ç H (Ir/Pitch) IPCH 8 inch
H IH/V 5 feet 9-11/16 inch
H PLMB 23.70°
H LEVL 66.30°
H CHK1 41.19°
H CHK2 48.81°
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