An older style of framing in which the studs in
the bearing walls are run uninterrupted from the
sole plate up to the roof plate.
The floor joists are nailed to the studs.
Quality of longer materials not as available
1 x 4 let into the framing for diagonal bracing.
Frame of the building is raised one story at a time
with studs that are a single story high.
The walls for each story are set over the
underlying joists and subfloor
Floors are complete and independent of the
Subfloor extends to the outside edges of the
Each level of the house is constructed
Build walls on floor and tilt up into place.
Floor Frame Members
Floor frame consists of:
Posts or columns
Larger principle beam made of steel or wood
supported by posts/columns or piers which
support the floor joists
Can be recessed into foundation wall
will set on top of girder
Can sit on top of foundation wall Joist will hang
off side with
Girders may be supported by steel columns
Column size determined from blueprints
Types of Girders
Parallam (PSL) Micro
(LVL) Steel I
Provide bearing for floor joists
Sill is attached with anchor bolts.
Size number, and spacing of bolts is determined
Series of parallel support beams which support
floor loads and which are supported by Girders,
or bearing walls.
Solid Dimensional lumber (2x __)
Open Web Floor Truss
Joists have a tendency to sway and deflect over
Bridging stiffens flooring
2” X 2 “ diagonal cross bracing