Copyright Goodheart-Willcox Co., Inc.
Chapter 11 Wall and Ceiling Framing 265
If all of the framing members are in line vertically,
the top plate does not need to be doubled. The studs
must be placed directly over the floor joists at each
level and trusses or rafters must be placed directly
over the studs. Figure 11‑43 shows how the framing
members align.
Advanced framing replaces wood with insulation
wherever that can be done without sacrificing structural
integrity. Headers are built with a single ply of glulam or di-
mensional lumber, Figure 11‑44. Headers are eliminated
on non-load bearing walls and replaced by a single plate
and cripple studs, just like the sill framing of a window.
Framing members “stack” to create
direct load path
B
APA plywood or OSB roof sheathing
(omitted for clarity)
Roof trusses (energy heel roof
trusses shown) 24uni2033 OC
Single top plate
APA plywood or OSB wall
sheathing
2×6 studs 24uni2033 OC supporting one
floor, roof, and ceiling. Height
limitations per code requirements.
APA Sturd-I-Floor®
minimum 24 OC
APA Rim Board®
APA wood I-joists or SCL 24uni2033 OC
APA-The Engineered Wood Association
Figure 11‑43. In-line framing 24″ on center (OC). A—Framing members must be centered over the member below within 1″.
B—Aligned framing members create a straight load path from the roof to the foundation.
1uni2033 1uni2033
Rafter
Ceiling joists
1uni2033 1uni2033
Studs at 24uni2033 OC
Common/repetitive members supporting
uniform loads applied to single top plate
Trusses or floor joists at 24uni2033 OC
Studs at 24uni2033 OC
A
Chapter 11 Wall and Ceiling Framing 265
If all of the framing members are in line vertically,
the top plate does not need to be doubled. The studs
must be placed directly over the floor joists at each
level and trusses or rafters must be placed directly
over the studs. Figure 11‑43 shows how the framing
members align.
Advanced framing replaces wood with insulation
wherever that can be done without sacrificing structural
integrity. Headers are built with a single ply of glulam or di-
mensional lumber, Figure 11‑44. Headers are eliminated
on non-load bearing walls and replaced by a single plate
and cripple studs, just like the sill framing of a window.
Framing members “stack” to create
direct load path
B
APA plywood or OSB roof sheathing
(omitted for clarity)
Roof trusses (energy heel roof
trusses shown) 24uni2033 OC
Single top plate
APA plywood or OSB wall
sheathing
2×6 studs 24uni2033 OC supporting one
floor, roof, and ceiling. Height
limitations per code requirements.
APA Sturd-I-Floor®
minimum 24 OC
APA Rim Board®
APA wood I-joists or SCL 24uni2033 OC
APA-The Engineered Wood Association
Figure 11‑43. In-line framing 24″ on center (OC). A—Framing members must be centered over the member below within 1″.
B—Aligned framing members create a straight load path from the roof to the foundation.
1uni2033 1uni2033
Rafter
Ceiling joists
1uni2033 1uni2033
Studs at 24uni2033 OC
Common/repetitive members supporting
uniform loads applied to single top plate
Trusses or floor joists at 24uni2033 OC
Studs at 24uni2033 OC
A