National Structural Steelwork Specification For Building Construction 7th Edition Pdf Link

National Structural Steelwork Specification (NSSS) for Building Construction, 7th Edition , was updated with a 1st Revision

Q: Does the 7th Edition replace BS EN 1090-2?
A: No. EN 1090-2 is a harmonized European standard. The NSSS complements it with UK-specific best practice, often being more stringent. Execution Classes (EXC1 to EXC4): The specification now

Welding Quality Management: Welding systems must now be certified to BS EN ISO 3834-3 for Execution Class 2 (EXC2) and BS EN ISO 3834-2 for EXC3. Execution Classes (EXC1 to EXC4): The specification now

2. Steel Construction Institute (SCI) Online Shop

The SCI operates the Steelbiz portal. Search for “Publication Pxxx” (the 7th Edition has a specific publication number—check their site). You can download the PDF immediately after purchase. Execution Classes (EXC1 to EXC4): The specification now

• Execution Classes (EXC1 to EXC4): The specification now explicitly ties fabrication requirements to the chosen Execution Class, ensuring that the level of inspection and testing matches the structural risk.
• CE Marking: Guidance on how steelwork must be CE or UKCA marked post-Brexit.

2. Digital and BIM Integration

The construction industry is moving toward Building Information Modeling (BIM). The 7th Edition includes new clauses regarding:

• Read contract and scope clauses first to confirm the edition is mandated.
• Use the table of contents and index to locate clauses relevant to your trade (fabrication, welding, coatings, erection).
• Cross-reference the NSSS clauses with applicable Eurocodes/BS EN standards cited in the document.
• Extract relevant checklists, hold points, and sample certificates to include in project QA plans and subcontract documentation.
• Keep a digital searchable copy for quick lookups during fabrication and site inspections.

: Mandates ISO 9001 compliance and factory production control. Major Changes in the 7th Edition (1st Revision)