User`s guide

User's Guide — 21
• 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]
þþ 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.
þþ Note: You may set your calculator to display the Jack rafter lengths
in either ascending or descending order (see Preference Settings on
page 96).
þþ 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).