Temporary works coordinator
Also called TWC
The person appointed by a contractor to manage the overall temporary works process on a project or site, ensuring temporary works are designed, checked and given a permit to load or use before they are relied upon. The role is a management and coordination function, not necessarily a design role.
In practice
The coordinator owns the process, not the calculations. On a crane matting case that means making sure a design exists for the set-up, that the ground bearing assumptions in it are traceable to something real, that it has been checked to a level proportionate to the risk, and that the permit is issued before anything is loaded — none of which requires the coordinator to size the mat personally.
Where this comes from: UK contractor practice under a temporary works procedure. This describes the role as it is operated; it is not a statutory definition.
Where it matters on site
This is the person a supplier’s technical information should reach. Crane mats are frequently ordered by a hire desk, a site manager or a subcontractor with no route into the temporary works register at all, and the first the coordinator hears of them is when they are already under a crane. Naming the coordinator on the order is a small change that puts the item inside the process it belongs in.