Steel has a much higher cost than wood nearly twice as much for materials.
Roof wood frame construction.
Wood frame construction is the predominant method of building homes and apartments in the united states enabling this nation to have the world s best housed popu lation.
This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.
Simple roofs such as a shed or the common gable are fairly easy to construct even without plans if you understand the basics and a little geometry.
Piece by piece rafter roof construction however is still the more common construction method for many buildings.
It is the form most commonly used by.
Shed gable hip gambrel and mansard.
The modern conventional wood frame house with wood or wood product covering materials is economical long lasting and can be constructed in any location.
The majority of roofs are framed using wood trusses 1 with a few using wood with steel bracing.
A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.
Gable a gable roof has a ridge at the center and slopes in two directions.
Common types of roofs and basic framing terms.
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.
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.
Collar ties rafter ties tension beams structural ridge beams.
Framing in construction is the fitting together of pieces to give a structure support and shape.
It is a waterproofing layer made of regular felt stacked above the solid.
Increasingly wood framing is also being used in com mercial and industrial buildings.
Few if any materials can compete with wood framing in the construction of houses.
Block double top plate wall section.
2x ceiling joists 2x solid blocking w approved framing anchor ea.
While lumber may have a cost of 4 per board foot 2 steel may be as much as 8 a board foot 2.
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.
Some of these can support the roof and prevent ridge sagging and wall spreading.
However it is also possible to build larger roofs using steel framing.
An example of each is shown in figure 2 1.
Roofs are framed in five basic designs.
Panel w 8d 6 6 12 oc common nails 2x roof r w r 30 batt.
Framing a roof is the last step in framing new construction.