IRWIN® Rafter Square Reference Guide Complete Instruction Book ...

HIP AND VALLEY RAFTERSBecause hip and valley rafters both run at a 45° angle to the common rafter, theyare treated very similarly, and the cuts and lengths apply equally to both types ofrafters. (See figure 2.)Hip-Val Length: Using the tables, obtain the hip or valley rafter length.EXAMPLE: For our example (7 inch Rise, 15' run), the hip or valley rafter lengthis 22' 11 3 ⁄8".[Fig. 9 – Top View of Hip Rafter Layout]INTERSECTION OFHIP, RIDGE ANDRIDGE JACKRAFTER LENGTHTOPBEVELCUTMITERALLOWANCEIF USEDMITERCUT TOP WALLPLATE BACK MITERALLOWANCETOP WALL PLATEFASCIA13FIGURE 9: Top View of Hip Rafter Layout