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U
SER
’
S
G
UIDE
— 49
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 a RAD 8 FEET 1-1/2 INCH
3. Find arc angle:
a ARC 134.76º
4. Find arc length:
a ARC 19 FEET 1-5/16 INCH
5. Display entered chord length:
a CORD 15 FEET 0 INCH
6. Find segment area:
a SEG 54.19722 SQ FEET
7. Find pie slice area:
a PIE 77.63472 SQ FEET
8. Display entered segment rise:
a RISE 5 FEET 0 INCH
9. Display stored on-center spacing for the wall:
a OC 16 INCH*
(Cont’d)
4065UG-E-B 6/9/04 1:49 PM Page 49
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