A 10-25 minute EU-focused check of structural steel bolted connection markings, bolt assembly records, tightening method, torque or tensioning evidence, and hold points before cover hides the connection.
8 items to check
These checklists are in development and testing. Information is for reference only and does not replace professional consultation. Data may contain inaccuracies. Consult a qualified professional.
If you notice an error, please email [email protected].
For a complete inspection, also consider:
A cross-EU checklist for concealed works where Eurocodes, national annexes, CE-marked products, and local execution standards must be checked before cover-up.
A cross-EU pre-cover check that CE marking, Declaration of Performance, ETA/EAD or harmonised standard documents, labels, batch traceability, instructions, and intended use match installed construction products before cover-up.
A 10-25 minute EU-focused check of ETA or CE-marked post-installed anchors before cover, fixtures, grout, insulation, fire protection, or finishes hide hole preparation, embedment, setting, torque, and records.
Structural steel bolted connections must match the project drawings, execution specification, execution class, Eurocode design basis and national annex where relevant. EN 1090 execution requirements apply through the project and national framework; do not assume one tightening rule for every connection.
Fabricated steel components and structural bolting assemblies may require CE marking and a Declaration of Performance under the Construction Products Regulation route where applicable. Preloaded high-strength structural bolting assemblies are commonly linked to EN 14399, while non-preloaded structural bolting assemblies are commonly linked to EN 15048; the project and product documents control the exact requirement.
Structural bolts, nuts and washers must be used as specified assemblies. For preloaded systems, components are not freely interchangeable unless the product standard and manufacturer allow it. Markings must support traceability to the approved bolt assembly.
Hole type, alignment, gap limits, pack plates, surface condition and faying surface preparation are project and EN 1090 execution matters. Slip-resistant or preloaded connections may have specific surface and coating requirements; acceptance criteria must come from the project specification.
The tightening method must follow the project execution specification, EN 1090-based requirements where applicable, bolt assembly documents and manufacturer instructions. Torque control, combined method, direct tension indicators, tension-control bolts, turn-of-nut and snug-tight procedures are not interchangeable without approval.
Torque values, preload values, inspection frequency, calibration requirements and acceptance criteria must come from the project specification, bolt system documentation and national practice. Do not invent torque values from bolt diameter alone.
Final marking, witness marks, paint marks or inspection tags are project quality controls. They are useful only if the project defines what the mark means and who is authorised to apply it.
Nonconforming bolted connections must be handled through the project quality and structural review process. Retightening, replacing bolts, enlarging holes, adding welds, changing washers or covering defects must follow the engineer's instruction, execution specification and national requirements.
Use this checklist when structural steel bolted connections are still visible, before fire protection, cladding, paint touch-up, grout, ceilings, facade zones, or other cover hides the bolts and records. It is not a full structural steel inspection.
There is no single EU building code for steelwork. The project execution specification, Eurocodes and national annexes where applicable, EN 1090 execution requirements, execution class, national rules, CE marking/Declaration of Performance where applicable, bolt assembly standards, and manufacturer instructions control the detail.