Owner's manual

80 — ITI SHEET METAL/HVAC PRO

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:

oo 0.

15fR RUN 15 FEET 0 INCH

5fr RISE 5 FEET 0 INCH

2. Calculate Radius:

Çp RAD 8 FEET 1-1/2 INCH

3. Find Arc Angle:

ÇC 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)