Contractor
Contractor. The main duty of a contractor is to plan and manage the work under their control so that it is carried out in a way that controls risks to health and safety.
Other duties entail co-ordinating their activities with others involved in the project team – in particular, complying with directions given to them by the principal designer or principal contractor.
See: https://www.citb.co.uk/documents/cdm%20regs/2015/cdm-2015-contractors-printer-friendly.pdf
Contracts Manager
This can be an architect, surveyor, or tradesperson experienced in the building construction industry with full responsibility for the contract works from start to finish.
A concrete, stone or brick protection which overhangs the top course of a brick wall.
A decorative moulding used between a wall and ceiling line.Corrosion of Steel
Corrosion of steel from new to painting. When steelwork is produced from molten iron and passes through the mill to form shape when cooled it is light blue in colour and known as Mill Scale.
This finish is where the layer of of molten steel is deposited back onto the fabricated body of produced steel items such as stanchions and girders. This layer of the molten steel needs to be removed before painting. This can be done byway of natural weathering, grit/sand blasting, flame cleaning or acid cleaning.
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| Mill Scale | Weathering commenced | Flaking of the mill scale | Rust removed by any of the above methods including wire brushing |
During natural weathering the layer of mill scale becomes detached and once removed the surface will be left with very fine particles of steel referred to as Rust.
Cratering
Caused by rain falling onto a semi dry paint film or aeration of a paint coating during application. 
Curing
The time mixed materials such as concrete and two pack paints i.e. epoxy and polyurethane coatings take to dry by chemical action.