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R20 Wall—2x4 Framing

2x4 framing with insulated siding, insulated headers, R15 cavity insulation, and double top plates. Framing factor assumed to be no greater than 22 percent (see footnote a).

From: IECC Compliance Options for Wood-Frame Wall Assemblies, Form P320
R20 Wall—2x4 Framing
R20 Wall—Advanced Framing Techniques

Low-density fiberglass insulation (R19 compressed batts) with conventional headers and double top plates. Framing factor is assumed to be no greater than 20 percent (see footnote a).

From: IECC Compliance Options for Wood-Frame Wall Assemblies, Form P320
R20 Wall—Advanced Framing Techniques
R20 Wall—Insulated Headers

This assembly uses insulated headers, double top plates, and advanced framing techniques with R19 compressed fiberglass batts as cavity insulation. Framing factor is assumed to be no greater than 22 percent (see footnote a).

From: IECC Compliance Options for Wood-Frame Wall Assemblies, Form P320
R20 Wall—Insulated Headers
R20 Wall—Insulated Siding

Conventional framing techniques with 2x6 studs and insulated siding (minimum R2). Framing factor assumed to be no greater than 25 percent (see footnote a).

From: IECC Compliance Options for Wood-Frame Wall Assemblies, Form P320
R20 Wall—Insulated Siding
R21 Wall—Advanced Framing Techniques

Several enhancements achieve a higher R-value: 2x6 framing, R21 cavity insulation, and insulated headers. Assumes a framing factor of no greater than 18 percent (see footnote a).

From: IECC Compliance Options for Wood-Frame Wall Assemblies, Form P320
R21 Wall—Advanced Framing Techniques
One-Hour Combustible Floor-Ceiling Assemblies - Lumber Joists
From: Engineered Wood Construction Guide, Form E30
One-Hour Combustible Floor-Ceiling Assemblies - Lumber Joists
Energy-Conserving Wall Assemblies
From: Engineered Wood Construction Guide, Form E30
Energy-Conserving Wall Assemblies
FM Class 1-90
From: Engineered Wood Construction Guide, Form E30
FM Class 1-90
One-Hour Combustible Floor-Ceiling And Roof-Ceiling Assemblies - I-Joists
From: Engineered Wood Construction Guide, Form E30
One-Hour Combustible Floor-Ceiling And Roof-Ceiling Assemblies - I-Joists
Typical Panel-To-Metal Framing Systems
From: Engineered Wood Construction Guide, Form E30
Typical Panel-To-Metal Framing Systems
Wall Bracing
From: Engineered Wood Construction Guide, Form E30
Wall Bracing
Wall Frame Comparison
From: Engineered Wood Construction Guide, Form E30
Wall Frame Comparison
FM Class 1-105
From: Engineered Wood Construction Guide, Form E30
FM Class 1-105
FM Class 1-120
From: Engineered Wood Construction Guide, Form E30
FM Class 1-120
FM Class 1-135
From: Engineered Wood Construction Guide, Form E30
FM Class 1-135
Heavy Timber Construction
From: Engineered Wood Construction Guide, Form E30
Heavy Timber Construction
Noise-Resistant Party Wall
From: Engineered Wood Construction Guide, Form E30
Noise-Resistant Party Wall
Noise-Resistant Floor Assembly
From: Engineered Wood Construction Guide, Form E30
Noise-Resistant Floor Assembly
APA Sturd-I-Wall (Vertical Panel Installation)
From: Engineered Wood Construction Guide, Form E30
APA Sturd-I-Wall (Vertical Panel Installation)
APA Sturd-I-Wall (Horizontal Panel Siding Installation)
From: Engineered Wood Construction Guide, Form E30
APA Sturd-I-Wall (Horizontal Panel Siding Installation)
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