The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
Residential roof framing details.
Introduction to prescriptive roof framing 3 prescriptive roof construction the international residential code irc and the international building code ibc set out specific guidelines within which conventional light frame wood structures may be built without the need for engineering analysis of each component.
The provisions for prescriptive roof construction are found in.
Standards plans are a time saving tool that is advantageous for structures that are built repeatedly where the design and construction are not expected to vary greatly from site to site the use of a standard plan greatly reduces the time required for plan check.
One and two family residential building code requirements 5 preface the purpose of this guide is to provide an informa tional guide to the builder for the construction of a new one or two family residential building garage or other accessory buildings and structures.
The run or half the building span is the base of the triangle.
Gable a gable roof has a ridge at the center and slopes in two directions.
Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters.
This is known as prescriptive framing.
Framing must transfer all gravity uplift and lateral loads to the foundation.
The rise or height of the roof at its peak is the altitude of the triangle.
Roof framing connections in conventional residential construction path partnership for advanced technology in housing is a new private public effort to develop demonstrate and gain widespread market acceptance for the next generation of american housing.
A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework.
Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to.
Details for conventional wood frame construction.
Permits can therefore be issued much faster for structures such as swimming pools metal patio covers stairways signs etc.
It is simple in design economical to construct.
A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.
It is a waterproofing layer made of regular felt stacked above the solid.
An example of each is shown in figure 2 1.
Many regulations of the building code which are com.
Before the roof sheathing goes on the open framing provides easy access for attaching the return blocking and the nailers for the rake soffit.
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.
Wood construction data 1.
It is the form most commonly used by the navy.
The last pieces to go in were nailing blocks above the ledger for the back of the return and at the bottom edge of the soffit for attaching the rake 20.
And the line length measurement from the roof peak to the building wall is the hypotenuse.
