Framing A Open Roof

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.

Framing a open roof.

Rick arnold frequent contributor to fine homebuilding and the journal of light construction presenter at jlc live the katz roadshow the remodeling show. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Framing most common types of roof gable roof. Here we have a wood framed gable roof.

Position the square at the end of the rafter board with the tongue on your left and facing away from you. Open framing substrates the open frame substrate uses wood or metal framing members such as bar joists or min. While you re at it some carpenters. On both ends of the roof i let the subfascia run out beyond the anticipated width of the rakes.

Add the length of the overhang beyond this mark and. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. Let s consider a basic gable wood roof framing design. Measure your seat cuts.

16 gauge purlins to secure the metal roof panels. The next option you can consider in opening up the ceiling frame is to remove some of the ceiling joists or collar ties while leaving the full complement of rafters in place. The two main types of substrates used with metal roofing systems are open framing and solid substrates composite or plywood. A gable roof for a shed can be built with rafters with a 1 6 ridge board or using trusses.

Things you ll need 2 in 4 in 5 1 cm 10 2 cm boards 2 in 6 in 5 1 cm 15 2 cm board hammer level 8 penny nails framing square circular saw hand clamps hurricane clips roof sheathing aluminum drip edge felt paper shingles utility knife construction nails. You should be able. Typically this is done by leaving every third collar tie and removing the two in between as shown in the drawing. In conventional gable roof framing the slope of the roof is formed by rafters that run diagonally downward from the peak of the roof to the tops of the exterior walls of the building.

Line up the square with the plumb line then rotate it 180 degrees realigning the square on the other side of the. A gambrel shed roof involves significantly more angle cuts than a gable roof but provides more storage.