ISO 17607-4:2023

Overview

ISO 17607-4:2023 - "Steel structures - Execution of structural steelwork - Part 4: Erection" defines the general requirements for the erection phase of structural steelwork. Intended to be used in conjunction with ISO 17607‑1 (General requirements and vocabulary), it provides guidance and mandatory provisions for on-site assembly, survey, support, anchoring, grouting and acceptance of steel structures and manufactured steel components.

Key topics and technical requirements

• Execution specification and quality requirements
  • Defines what the erection execution specification must contain (identification, traceability, geometrical tolerances, options and execution levels).
  • Requires agreed technical requirements before starting erection and procedures for changes.
• Constituent products
  • Covers anchorages, foundation bolts, grouting materials (cement-based and special grouts), and fine concrete used during erection.
• Erection planning and methods
  • Design basis for erection methods and the constructor’s erection method statement.
  • Site conditions, temporary supports, measuring and maintaining suitability of supports.
• Survey and control
  • Reference systems, positioning points and survey procedures for accurate setting-out and alignment.
• Handling, trial assembly and on-site work
  • Erection drawings, marking, storage/handling, trial assembly and permitted erection methods.
• Geometrical tolerances
  • Tolerances for buildings, bridges, crane runways and concrete foundations (informative annexes provide guidance).
• Inspection, testing and correction
  • Inspections of trial assemblies and erected structures, surveys of connection node positions, and other acceptance tests.
• Documentation and conformity
  • Requirements for records and a declaration of conformity to claim compliance with the standard.

Practical applications and users

ISO 17607‑4 is relevant for:

• Structural engineers and designers specifying erection requirements and tolerances.
• Steel fabricators and erectors preparing method statements, trial assemblies and on‑site erection.
• Contractors and site managers overseeing supports, anchoring, grouting and survey control.
• Quality control inspectors and certifiers performing inspections and acceptance tests.
• Owners and project specifiers seeking a standardized basis where national/regional standards are absent.

Common projects: building steel frames, bridge erection, crane runway installation, steel-to-concrete connections and any manufactured steel components requiring site assembly.

Related standards

• ISO 17607 series: Part 1 (General), Part 2 (Steels), Part 3 (Fabrication), Part 5 (Welding), Part 6 (Bolting)
• Normative references cited include ISO 4463‑1, ISO 7976‑1/2 and ISO 22966 (concrete execution)

Using ISO 17607‑4 helps ensure consistent, auditable erection practices, clear execution specifications and reliable quality control for steel structures in international projects.