Scaffolding Inspection Against the Design, with Tagging

Scaffolding is temporary works: it is designed for a purpose, erected to that design, and altered constantly once trades start using it. Most scaffold failures follow modification and not erection: a tie removed to get material through, a board lifted for access, a bracing member taken out and not replaced. itmad provides third-party scaffolding inspection of access, birdcage, suspended and shoring systems. itmad operates across the Middle East, Asia and Europe. Last reviewed: October 2026.

Types inspected

Tube and fitting scaffolds, system and modular scaffolds, independent and putlog access scaffolds, birdcage and internal access scaffolds, mobile tower scaffolds, cantilever and truss-out scaffolds, suspended and hanging scaffolds, shoring and back-propping, formwork support structures, loading bays and material platforms, temporary roofs and encapsulation, and access towers and staircases.

What the inspection covers

Foundations come first: sole boards, base plates, the bearing capacity of the ground beneath, and evidence of settlement or scour. Standards, ledgers and transoms must be at the spacing that the design requires and plumb and level within tolerance. Bracing, both facade and ledger, must be present and complete, as it is the most commonly removed component, and ties must be at the pattern and frequency that the design specifies, fixed to a structure capable of taking the load, and tested where the type requires it.

Boarding must be complete and correctly supported, with no traps or gaps, and edge protection must have guardrails at the required heights, mid-rails and toe boards. Access by ladders, correctly secured and extended, or by stair towers must have safe landings. The loading class must be marked and appropriate to the actual use, including any material stacked on the platform, and couplers and fittings must be the correct type, in good condition and tight. The inspector also looks at proximity to overhead services and excavations, at public protection, netting and sheeting and the additional wind loading that sheeting imposes, and at compliance with the scaffold design drawing, identifying any deviation from it.

Design and deviation

Standard configurations can be erected to a recognised compliant arrangement. Anything outside that, such as cantilevers, truss-outs, bridging, sheeting, loading bays, unusual heights or restricted tie patterns, requires a design from a competent temporary works designer.

A large share of findings are deviations from the design that were made for practical reasons on site and never referred back. itmad reports the deviation against the drawing, because whether the scaffold is still adequate is a question for the designer and not for the inspector or the gang who made the change.

Inspection intervals and tagging

Scaffolding is inspected before first use, at intervals not exceeding seven days thereafter, and after any event liable to have affected its stability: high wind, impact, alteration, or prolonged wet weather affecting the foundations. It is also inspected after any modification, however minor. A scaffold that passes is tagged at each access point with the inspection date, the next due date and the loading class, and one that fails is tagged to prohibit use and its access is physically restricted, because an untagged or incorrectly tagged scaffold will be used by someone who assumes it is safe.

Standards applied

Inspection follows the standard that the contract or governing authority specifies, commonly BS EN 12811 for temporary works equipment, BS EN 12810 for facade scaffolds of prefabricated components, TG20 guidance where the client works to British practice, and the manufacturer's design manual for system scaffolds. Where a client HSE specification sets additional requirements, inspection is against those as well.

Who commissions this

Principal contractors who need independent verification of scaffold erected by a subcontractor; facility owners where others erect scaffolding on their premises; scaffolding contractors demonstrating compliance to their client; projects where the client HSE specification requires third-party inspection; operators during shutdowns, when large volumes of scaffold are erected quickly; and organisations after an incident, a near miss or a regulatory finding. Attendance follows the seven-day cycle where a scaffold remains in use, and can be arranged at short notice after alteration.

What the client receives

An inspection report that identifies the scaffold by location, reference and type, with findings recorded against each element and photographic evidence of defects. Deviations from the scaffold design are identified and referenced to the drawing, defects are classified by severity to distinguish what prohibits use from what must be corrected, and tagging is applied at each access point with inspection and due dates. A handover certificate is provided where the scaffold is being accepted from the erector, and a register of scaffolds under inspection with next due dates is kept where itmad holds it.

Related services

Scaffold erector and inspector training is delivered under itmad's equipment safety training programme, and where a scaffold supports powered access equipment or lifting operations, those are inspected separately.

Frequently asked questions

Why do most scaffold failures follow modification?

Because a scaffold is altered constantly once trades start using it: a tie removed to get material through, a board lifted for access, a bracing member taken out and not replaced. That is why inspection continues after erection.

How often must a scaffold be inspected?

Before first use, at intervals not exceeding seven days thereafter, after any event liable to affect stability such as high wind, impact or prolonged wet weather, and after any modification, however minor. A scaffold in use is therefore inspected on a seven-day cycle.

What does the tagging show?

A scaffold that passes is tagged at each access point with the inspection date, the next due date and the loading class. One that fails is tagged to prohibit use, and access is physically restricted.

What is a deviation from the scaffold design?

A change made on site for practical reasons and never referred back to the designer. itmad reports it against the drawing, because whether the scaffold is still adequate is a question for the designer.

Which standards apply?

Commonly BS EN 12811 for temporary works equipment and BS EN 12810 for prefabricated facade scaffolds, with TG20 guidance where the client works to British practice and the manufacturer's design manual for system scaffolds. Any additional requirements in a client HSE specification are applied as well.

Who commissions scaffold inspection?

Principal contractors verifying a subcontractor's scaffold, facility owners, scaffolding contractors demonstrating compliance, projects whose HSE specification requires it, and operators during shutdowns. It is also commissioned after an incident or near miss.