Pitch Roof Framing With No Overhang

Three important considerations for building a shed roof roof pitch.

Pitch roof framing with no overhang.

Pitch can vary a great deal from a shallow slope up to a very steep pitch. Scale or measurement method. The greater the roof s pitch the better it will shed snow ice and rain. The minimum roof pitch is 1 8 inch rise per foot of span.

If no plans are. The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope. If he is working from a roof plan he learns the rafter lengths and the width of the building from the plan. It is also easier to insulate a roof with a greater pitch.

If the overhang extends beyond 24 inches say to 30 inches then a 2 6 top chord for the tail section will be required to handle the additional overhang. The total rise is 12 inches or 1 foot and the span is 4 feet so the pitch would be 1 4 or a quarter pitch roof. After cutting the angle i attached strips of 1x2 along the hypotenuse on both sides. The carpenter should first determine the length of the rafter and the length of the lumber from which the rafter may be cut.

Measure distance a along the unit run and mark. Repeat the same procedure on the side of the hip that faces the secondary roof using the hip pitch for that roof and measuring distance b. So if the pitch of your roof is 7 12 place one stair gauge on the vertical part of the framing square the tongue at the 7 inches 18 cm mark and place one stair gauge on the horizontal part of the framing square the body at the 12 inches 30 cm mark. For this 6 in 12 pitch roof i made one leg 12 inches and the other 24 inches.

Place your square on the side of the hip rafter that will face the main roof using the hip pitch for that roof 8 155 8. This is the line of backing. Pitch also has its own denotation determined by the rise in inches in 12 inches. One thing you never want to do when designing your roof is build one with a pitch lower than 3 12.

Pitch for a gable roof the most common is generally 1 4 or 1 3. From that corner i cut a right triangle at the roof pitch doubling the rise and run dimensions so the jig could be used for cutting full size rafters. Which is equal to 1 4 or 1 3 the total span of the building not counting any overhang. Overhang exactly right so that they will fit when placed in the roof.

This means that for every horizontal run of 12 you need at least 3 of rise.