Agree what is included
Scaffolds change. The argument usually starts when the site team thinks an alteration was included and the scaffold order says something else.
Before award, we want the expected stages and the route for instructing additional work clear to both teams.
Record the starting scope
Identify the elevations, lifts and boarding in the order, alongside loading, access and coverings. Use the current drawings. Where detail is still developing, record what the price assumes so there is a clear starting point for changes.
Name the planned adaptations
A new-build scaffold may rise with the brickwork. A recladding package may need inside-board changes as the façade build-up changes. List the stages and agree which attendances cover them.
“Adapt as required” leaves too much open to interpretation.
Use rates the QS can apply
We would rather agree a short schedule for likely changes than a long list that does not fit the job. Include labour, transport or design attendance where relevant, not just extra scaffold area.
Keep one instruction route
Site teams need to know who can order additional work. If several trades ask our gang for changes independently, the scope can grow without the principal contractor seeing the cost.
A photograph or marked-up drawing with a brief written instruction can identify the request. Agree how urgent matters will be recorded too.
Unauthorised changes are not variations
A commercial instruction route should never be confused with permission for other trades to alter the scaffold. NASC guidance is clear that scaffold structures should only be modified by competent scaffolders authorised by the scaffold contractor. Removing ties, boards, guardrails, toe boards or bracing to make another trade’s work easier can affect the integrity of the structure.
Where a requested change affects a designed arrangement, the engineering change should also be controlled. NASC scaffold-design guidance states that alterations to controlled drawings should be referred to the design engineer and confirmed in writing rather than accepted through verbal approval on site.
Time and return visits matter
The scaffold may look much the same while the cost changes. Delayed release can extend hire; out-of-sequence requests can mean additional journeys and gang attendances. Record those effects alongside changes to the physical scaffold.
Allow time for design review
A request to move a tie or alter a loaded bay is not necessarily something the gang can do immediately. We need to establish whether the design is affected and get the required review before altering it.
Review changes while they are current
Bring the variation list to regular commercial reviews. It is easier to agree a change while the people involved remember it and the work is visible. Keep extended hire under review too.
How we manage changes
We agree expected scaffold stages with the principal contractor and record instructions as work develops. The aim is a current account both sides can follow, rather than unresolved attendances at the end.
Further reading
Related access: Designed and complex scaffolds.