Calculated Industries 4090 - Manual (Page 81)

80 — ITI S
HEET
M
ETAL
/HVAC P
RO
Arched/Circular Rake-Walls — Chord Length and
Segment Rise Known
You’re building a Circular or Arched Rake-Wall. Given a Chord
Length of 15 Feet and a Rise of 5 Feet, find all Arc values and
lengths of the Arched walls. The On-Center spacing is 16 Inches.
KEYSTROKE DISPLAY
1. Enter Chord Length and Segment Rise:
o o 0.
1 5 f R RUN 15
FEET
0
INCH
5 f r RISE 5
FEET
0
INCH
2. Calculate Radius:
Ç p RAD 8
FEET
1-1/2
INCH
3. Find Arc Angle:
Ç C ARC 134.76º
4. Find Arc Length:
C ARC 19
FEET
1-5/16
INCH
5. Display entered Chord Length:
C CORD 15
FEET
0
INCH
6. Find Segment Area:
C SEG 54.19722
SQ FEET
7. Find Pie Slice Area:
C PIE 77.63472
SQ FEET
8. Display entered Segment Rise:
C RISE 5
FEET
0
INCH
9. Display stored On-Center spacing for the wall:
C OC 16
INCH
*
(Cont’d)