The provisions for prescriptive roof construction are found in chapter 8 of the irc and in section 2308 of the ibc.
Framing a roof hahn.
Skillion shed style roof framing the skillion and shed style roofs are framed with a single slope 2 4 or 2 6 or thicker rafters spanning from the low wall to the high wall.
Watch carpenter larry haun wrap up the framing of a modest size house in this video series from the fine homebuilding archives.
This is known as prescriptive framing.
While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below.
Framing walls with larry haun.
Measure down y height from the long point of the rafter cut and make a mark.
This will the first point of the rafter measurement line.
Conventional light frame wood structures may be built without the need for engineering analysis of each component.
Framing a roof with larry haun pro framer larry haun shows how to cut and install ceiling joists rafters and roof sheathing in the third episode of this framing video series.
Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter.
If you plan to have eaves to protect the shed walls make sure you add the extra length when measuring the rafters.
Within limitations which include among others building size roof pitch and design loads the allowed span for conventional rafters can.
Roof framing rafter layout from one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it.
Framing a roof is the last step in framing new construction.
Framing a roof with larry haun pro framer larry haun shows how to cut and install ceiling joists rafters and roof sheathing in the third episode of this framing video series.