Installing the roof valleys was somewhat demanding.  It required measuring 4x’s before cutting, then adjusting so that the plane of the rafter roof lines matched the plane of the valley beam. Three valley beams ran the length from the main ridge beam to the attic floor, and 3 others intersected with these long beams. Once set, the valley ridge beams were fabricated and installed (3 of them), with particular attention given the point of junction where the three beams met. Then the process for cutting the rafters with the eave extensions repeated itself for the gable extensions, about another 26 rafters. Finally, the rafters between the ridge beam and valley beam, then between the valley beam and the attic floor were measured and cut and affixed. This required the acquisition of use of special clips with an open 135 degrees to affix to the valley beams.

The roof valley is that angled piece right above where the man is bent over
The roof valley is that angled piece right above where the man is bent over