2021 International Residential Code for One- and Two-Family Dwellings – IRC-2021
The 2021 International Residential Code® (IRC) sets minimum requirements for one- and two-family dwellings and townhouses up to three stories. This official ICC model code consolidates building, mechanical, plumbing, energy, fuel gas, and electrical standards into one unified guide for home construction compliance.
Highlights:
- Covers structural, mechanical, plumbing, HVAC, energy, and electrical systems
- Offers both prescriptive rules and performance-based design flexibility
- Aligns with 2021 I-Codes® for integrated, multi-discipline compliance
- Includes updated energy provisions (NFPA 70, IECC) and appendices for solar, radon, and 3D-printed construction
Who It’s For:
Builders, code officials, engineers, and inspectors involved in residential code compliance, permitting, inspection preparation, or professional reference.
IRC-2021
2021 International Residential Code for One- and Two-Family Dwellings – IRC-2021
The 2021 International Residential Code® (IRC) sets minimum requirements for one- and two-family dwellings and townhouses up to three stories. This official ICC model code consolidates building, mechanical, plumbing, energy, fuel gas, and electrical standards into one unified guide for home construction compliance.
Highlights:
- Covers structural, mechanical, plumbing, HVAC, energy, and electrical systems
- Offers both prescriptive rules and performance-based design flexibility
- Aligns with 2021 I-Codes® for integrated, multi-discipline compliance
- Includes updated energy provisions (NFPA 70, IECC) and appendices for solar, radon, and 3D-printed construction
Who It’s For:
Builders, code officials, engineers, and inspectors involved in residential code compliance, permitting, inspection preparation, or professional reference.
IRC-2021
AWS D1.1/D1.1M:2020 – Structural Welding Code – Steel
AWS D1.1/D1.1M:2020 – Structural Welding Code – Steel is the 24th edition of the code and serves as the definitive standard for welding carbon and low-alloy steel structures. Approved by ANSI and published by the American Welding Society, it reflects the latest best practices in structural welding design, fabrication, and inspection.
Highlights:
- Welding requirements for carbon and low-alloy steels
- Design criteria for welded joints in tubular and nontubular members
- Prequalification standards for Welding Procedure Specifications (WPS)
- Qualification tests for welding procedures and personnel
- Rules for fabrication, inspection, repair, and stud welding
- Guidance for strengthening and retrofitting existing structures
- Covers steel 1/8 in [3 mm] or thicker, up to 100 ksi [690 MPa] yield strength
- Includes mandatory clauses, normative and informative annexes, and detailed commentary
Who It’s For:
Structural engineers, welders, inspectors, and contractors engaged in the design, construction, and quality control of welded steel structures in buildings, bridges, towers, and industrial facilities.
AWS D1.1/D1.1M:2020
AWS D1.1/D1.1M:2020 – Structural Welding Code – Steel
AWS D1.1/D1.1M:2020 – Structural Welding Code – Steel is the 24th edition of the code and serves as the definitive standard for welding carbon and low-alloy steel structures. Approved by ANSI and published by the American Welding Society, it reflects the latest best practices in structural welding design, fabrication, and inspection.
Highlights:
- Welding requirements for carbon and low-alloy steels
- Design criteria for welded joints in tubular and nontubular members
- Prequalification standards for Welding Procedure Specifications (WPS)
- Qualification tests for welding procedures and personnel
- Rules for fabrication, inspection, repair, and stud welding
- Guidance for strengthening and retrofitting existing structures
- Covers steel 1/8 in [3 mm] or thicker, up to 100 ksi [690 MPa] yield strength
- Includes mandatory clauses, normative and informative annexes, and detailed commentary
Who It’s For:
Structural engineers, welders, inspectors, and contractors engaged in the design, construction, and quality control of welded steel structures in buildings, bridges, towers, and industrial facilities.
AWS D1.1/D1.1M:2020