As discussed in chapter 1 the residential construction material most commonly used above grade in the united states is light frame wood.
Structural wood floor framing plan.
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.
For a thorough discussion of building structural design see the u s.
Department of housing and urban development s residential structural design guide.
Our 24 x 26 house floor framing floor beams and posts would now look like the image below.
Design of wood framing 5 1 general this chapter addresses elements of above grade structural systems in residential construction.
Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s.
Therefore this chapter focuses on structural design that specifies standard.
The image below does not show that the floor beam is also supported on its ends by the basement exterior structural walls.
Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.
The roof framing plan is drawn in the same manner as the floor framing plan.
At this point we ll focus on traditional wood framing for an example house in the next part of residential structural design.
If built up wood posts are being used the width of the post needs to be as wide as the beam that it is supporting.
Rafters are shown in the same manner as joists.
Figure 10 20 is an example of a roof framing plan for a wood frame roof.
A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.
Designing with wood joist span tables.
Details for conventional wood frame construction.