Roof Framing Valley Rafter

Next you will need to use the wall plate to rest the rafters on.

Roof framing valley rafter.

Use the body long side of the framing square. The valley rafter tie beams and joists will move the weight of the roof to the walls. The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. Like the hip rafter it extends diago nally from the top plate to the ridge.

However since there is some load transfer with these members the code requires a nominal 2 thickness and bracing to a load bearing partition at the upper end or to be designed as a beam with proper supports. Start by cutting the angles of the rafter s tail ends as well as the vertical cuts that are needed at the rafter tails. Valley rafter a no math approach to valley plates whether you re tying in new gable dormers or adding a chimney cricket during roof framing giving the valley jacks a place to land is an easy task with these step by step instructions. Keeping all of the crowns pointing up prevents waves from marring the finished roof.

Position the square with both the 8 inch on the outside edge of the tongue and the 12 inch on the blade on the upper edge of the board. Now you can nail the rafters to the ridge beam. Similarly hip and valley rafters provide the point of connection for roof rafters framed at angles. Position the body of the framing square on the rafter.

A valley rafterforms a depression in the roof instead of a hip. Because most framing lumber is not perfectly straight i check each piece and mark the crown before i start cutting the lumber into rafters. Rafter layout with a framing square this example is for a roof with an 8 12 pitch position the square at the end of the rafter board with the tongue on your left and facing away from you. Rotate it 180 from how you ve been using it so the right angle is pointing up.