Calculated Industries 4090 - Manual (Page 49)

48 — ITI S
HEET
M
ETAL
/HVAC P
RO
OFFSET EXAMPLES
Offset, Basic Example
If an offset is 5 Feet, the actual Length 10 Feet, and the Height of
the “end A” equal to 7 Feet, calculate the Centerline Radius,
Wrapper Length, Heel Radius, Throat Radius, and Theta.
KEYSTROKE DISPLAY
1. Enter actual Length as “x”:
o o 0.
1 0 f R X 10
FEET
0
INCH
2. Enter offset Length as “y”:
5 f r Y 5
FEET
0
INCH
3. Enter Height of “end A” as “a”:
7 f Ç 4 A 7
FEET
0
INCH
4. Calculate Centerline Radius, Wrapper Length, Heel Radius,
Throat Radius and Theta:
Ç ( RAD 6
FEET
3
INCH
( WL 11
FEET
7-1/8
INCH
( HEEL 9
FEET
9
INCH
( THRT 2
FEET
9
INCH
( THET 26.56505°
Note: If the calculated Throat Radius is less than zero, an error will be displayed (i.e.
“THRT Error”) when attempting to calculate the Offset.
STORED