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14 — C
ONSTRUCTION
M
ASTER
®
P
RO
/ T
RIG
/ D
ESKTOP
Ç a
Radius
— Enters or calculates the
circle radius
(e.g., 5 f Ç a).
a
Arc Length or Degree of Arc
— A multi-function
key that enters or calculates
arc length
or
degree of
arc
, and further solves for additional circular/arc val-
ues, including arched rake-walls (based on the
stored on-center spacing), listed below.
If a circle diameter is entered into the C key and
arc degree (or arc length) entered into the a key,
further presses of a will display and calculate the
following:
Press Result
1 Arc Length or Degree of Arc
2 Chord Length
3 Segment Area
4 Pie Slice Area
5 Segment Rise
6 Stored On-Center Spacing
7 Length of Arched Wall 1
8 Length of Arched Wall 2
9 Length of Arched Wall 3 (if applicable), etc.*
*Note: The calculator will calculate arched rake-wall stud sizes
with consecutive presses of the
a
key until it reaches the last
stud.
R
Run (Chord Length)
— Enters or calculates the
chord length
. Used in conjunction with an entered
segment rise to solve for the radius of a circle or
with an entered radius to solve for the segment rise.
r
Rise (Segment Rise)
— Enters or calculates the
segment rise
. Used in conjunction with an entered
chord length to solve for the radius of a circle or with
an entered radius to solve for the chord length.
4065UG-E-B 6/9/04 1:49 PM Page 14
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