Wood Framing Roof Detail

The run or half the building span is the base of the triangle.

Wood framing roof detail.

Wood construction data 1. This is known as prescriptive framing. Within limitations which include among others building size roof pitch and design loads the allowed span for conventional rafters can. Flush ceiling framing 42 post and beam framing 42 roof slopes 44 flat roofs 45 pitched roofs 45 valleys 48 dormers 48 overhangs 48 ridge beam roof details 49 lightweight wood roof trusses 49 chapter 8 wall sheathing 53 types of sheathing 53 corner bracing 54 installation of sheathing 54 chapter 9 roof sheathing 58.

Details for conventional wood frame construction. Panel w 8d 6 6 12 oc common nails 2x roof r w r 30 batt. The first approach to achieving a strong durable struc ture involving economical use of materials is to follow a basic modular plan for layout and attachment of framing members. Block double top plate wall section.

And the line length measurement from the roof peak to the building wall is the hypotenuse. Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. Slab on grade construction where stucco is applied over sheathing provide 2 layers grade d paper under lath n 2x4 stud wall 16 oc df stud grade.

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. 2x ceiling joists 2x solid blocking w approved framing anchor ea. Conventional light frame wood structures may be built without the need for engineering analysis of each component.

The rise or height of the roof at its peak is the altitude of the triangle.