Slabs and floors
House slabs and floors in Geneva at a lower cost
Each level of the house rests on a slab. Cast in place on formwork or assembled from precast elements, it must be flat, at the right level and ready for the networks and coverings.
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MS Contractor SA builds the slabs and floors of villas and detached houses in the canton of Geneva. This work includes the ground-bearing slab or slab on the raft, upper-floor slabs cast in place, floors with precast planks or hollow blocks, flat roof slabs, balconies and stairs. Thicknesses, reinforcement and provisions follow the plans of the engineer and the installers.
Ground-floor slab
On a house without a basement, the ground-floor slab rests on the fill prepared during the earthworks, or forms one piece with the raft slab. It receives the under-slab pipes, the ducts and often insulation laid before or after casting depending on the detail chosen by the architect.
Finished levels depend on the planned screed and covering thicknesses. We transfer them with the site management before casting.
Upper-floor slabs cast in place
A reinforced concrete upper-floor slab is formed on props, reinforced according to the plans and cast in one go when the surface allows. The provisions for stairs, service ducts and openings are set before reinforcement.
The surface is levelled and floated to receive the screed. Propping stays in place until the time set by the engineer. Levels are recorded at striking.
Precast floors
When the project provides for it, floors are built with precast planks or hollow blocks on joists, completed by a structural topping cast on site. This solution reduces formwork and speeds up the worksite on regular spans.
Installation requires a crane suited to access to the plot and precise preparation of the supports on the walls. These points are checked during the visit and described in the quote.
How the package runs
Each slab sits between two levels of walls, and the walls below must be finished and checked before formwork. The installers’ plans are gathered to place the provisions. The engineer checks the reinforcement. Concreting is scheduled with the batching plant.
Once set, the slab carries the work of the next level. The props are only removed at the time indicated by the engineer.
What the quote includes
Formwork and propping, reinforcement or precast elements, concrete by class, provisions and openings, surface finish, cleaning. Balconies, canopies and concrete stairs appear as separate items.
Unless stated otherwise, we do not carry out screeds, thermal and sound insulation, pipes and ducts, which are installed by the companies appointed for these packages.
On our worksites
Frequently asked questions
The questions we are asked before a worksite
Who chooses between a cast slab and a precast floor?
The architect and the engineer, according to spans, loads, timescales and access to the plot. We carry out the solution drawn and can point out, when reading the plans, the practical effects of each option on the worksite.
How are the passages for electricity and plumbing planned?
From the installers’ plans, sent before reinforcement. Provisions, ducts and sleeves are placed in the formwork and checked before casting. Announcing every element in time keeps the load-bearing slab intact, as drilling it afterwards is something we prefer to avoid.
Is the slab ready to receive parquet or tiling directly?
No. The structural slab generally receives insulation and then a screed, laid by other companies, before the coverings. We hand over a surface set to the level agreed for these layers.
Do you build flat roof slabs and balconies?
Yes, in reinforced concrete according to the engineer’s plans, with the falls, provisions and upstands needed for the waterproofing applied afterwards by the specialised company.
Your house
A villa project starts with a discussion of the plans.
Describe your project, the municipality and the stage of the studies. MS Contractor SA contacts you again to clarify the structural work packages to price.