User's Guide — 73Irregular (non-45°) Hip/Valley and Jack Rafters —Descending, with On-Center Spacing Maintained (notavailable on LT)You’re working with a 7/12 pitch and half your overall span is 4 feet.The irregular pitch is 8/12, and 16 inch on-center spacing is maintainedon both sides. Complete the following steps:(1) Find the length of the Common rafter;(2) Reset calculator to 16 inch on-center spacing;(3) Enter the irregular pitch; find the length of the adjoining “irregular”Hip (or Valley) and the cut angles;(4) Find the Jack lengths on the “irregular” pitch side (16 inch on-center spacing);(5) Find the cut angles;(6) Find the Jack lengths on the “regular” pitch side (16 inch on-center spacing);(7) Find the cut angles.Keystroke Display1. Find Common rafter length:[On/C] [On/C] 0.[Conv] [1] (Temporarily sets fractional rounding to 1/16) 0.7 [Inch] [Pitch] PTCH 7 INCH4 [Feet] [Run] RUN 4 FEET 0 INCH[Diag] DIAG 4 FEET 7-9/16 INCH2. Enter on-center spacing:16 [Inch] [Stor] [7] OC 16 INCH3. Find irregular Hip/Valley rafter length and cut angles:8 [Inch] [Conv] [Hip/V] IPCH 8 INCH[Hip/V] IH/V 5 FEET 9-11/16 INCH[Hip/V] PLMB 23.70°°[Hip/V] LEVL 66.30°°[Hip/V] CHK1 41.19°°[Hip/V] CHK2 48.81°°(Cont’d)
