The Keegan Quarries Ltd. Solid Wall System consists of a single 100 to 200 mm thick wall unit. One face has a steel mould finish, the other face a quality floated finish. Either stand-alone structures are possible with panels simply grouted together or, when complemented with double walls and/or half floor units entire buildings can be erected.
Typical applications of Double Wall:
Hotel/Apartment/House precast shells.
Internal dividing walls.
Dado Walls/Bund Walls.
Tanks (Attenuation and foul collection).
Dock Leveller housings, perimeter retaining walls to Industrial units.
Prison cells.
Advantages:
Considerable saving on main contractor programme against traditional construction methods.
Factory controlled conditions ensure highest accuracy and consistent manufacturing quality.
Greatly reduced labour on site.
Excellent acoustic characteristics.
Excellent fire resistance, Class 0, BS8110:Part 2.
Immediate cosmetic finish, décor can be applied to moulded face as soon as the building is watertight.
Easier to comply with health and safety regulations due to the above savings.
Saving on contract preliminary items as complete external scaffolding can be done away with in some instances or started very late into the program once the precast shell is nearing completion.
Environmentally friendly as there is a minimum of waste on site compared to traditional building methods.
Design:
All of the design work required is based on the traditional limit state design for ordinary reinforced concrete, (BS8110). Panels can be designed for either load bearing or non-load bearing situations.
Depending on the thickness of the wall panel either one layer of mesh or two layers separated by chairs.
Once designed, the wall panels are drawn completely in 3D within the CAD system of the plant and fully detailed with respect to reinforcement, cast-in items and openings for windows, doors and services.
Electrical services can also be included in the pre-engineering of the panels at the design stage. Electrical back boxes and conduits can be cast in, if required.
Erection:
The procedure for erecting any solid wall panel is the same irrespective of the size or shape.
Customer/Contractor provides a base slab with dowel bars cast in predefined positions ready for first lift of walls.
All grid lines and wall positions are marked directly on the floor slab.
Shims are placed at the wall positions and levelled (typically 25mm) ready to receive the wall.
The solid wall is hooked onto the crane and lifted into position. After hooking and before it is lifted the wire loops on the panel ends are pulled out.
When in the correct position 2 No. push-pull props are secured to the face of the panel and the floor slab.
Straight bars are placed between the units, locking the loops together.
