Summary: the ridge end common rafters view B To calculate the actual length deduct one half the 45° thickness of the ridge piece that fits between the rafters from the theoretical length Figure 2 31 Shortening a hip rafter When no common rafters are placed at the ends of the ridgeboard the hip rafters are placed directly against the ridgeboard They must be shortened one
Image Dimensions: 592 x 392
Image originally found here.