Calculated Industries 44060 - Manual (Page 23)

User's Guide — 21
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Subsequent presses of the
[Hip/V] key will also display Plumb,
Level, and Cheek cut angle values in degrees.
[Conv] [Hip/V] — Irregular Pitch
Enters the
irregular or secondary pitch value used to calculate
lengths of the irregular Hip/Valley and Jack rafters.
You may enter the irregular pitch as:
•
a dimension: 9 [Inch] [Conv] [Hip/V]
•
an angle: 30 [Conv] [Hip/V]
•
a percentage: 75 [%] [Conv] [Hip/V]
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Note: An entered irregular pitch can be recalled by pressing [Rcl]
[Conv] [Hip/V].
[Jack] — Jack Rafters
Finds the descending Jack rafter sizes for
regular pitched roofs,
based on the stored on-center spacing and previously entered or cal-
culated right triangle/rafter values (e.g., pitch, rise, run).
•
The default on-center spacing is 16 inches. A new on-center
spacing may be entered and permanently stored by pressing
an inch value and
[Stor] [7] (e.g., 12 [Inch] [Stor] [7]). The cur-
rent on-center spacing value can be viewed by pressing [Rcl]
[7].
•
Repeated presses of the [Jack] key will display all the rafter
sizes (on the
regular pitch side) as well as display the Plumb,
Level, and Cheek cut angle values. Additional presses will dis-
play the rafter sizes on the
irregular pitch side (if an irregular
pitch was entered; see above), or repeat the previously dis-
played values.
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Note: You may set your calculator to display the Jack rafter lengths
in either ascending or descending order
(see Preference Settings on
page 96).
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Note: You may program your calculator to “mate up” the Jack rafters,
rather than using the entered or default on center for both sides (see
Preference Settings on page 96).