Table of Contents
What is non suspended slab?
Non-suspended slab is a slab that cast on the ground. The method to design this slab is different than suspended slab.
What is a suspended ground floor slab?
A suspended concrete floor is a floor slab where its perimeter is, or at least two of its opposite edges are, supported on walls, beams or columns that carry its self weight and imposed loading. The floor spans between supports and will normally deflect under load to a dimension that is limited by the design used.
How is a suspended slab constructed?
Precast concrete suspended slabs are constructed off site and later are craned into the construction site. This type uses precast concrete panels or planks spanning only in one direction. The concrete is poured after the reinforcement is placed in reusable and adjustable moulds.
What is a suspended slab foundation?
A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. These slabs are generally classified as ground-bearing or suspended. A slab is ground-bearing if it rests directly on the foundation, otherwise the slab is suspended.
What is suspended Foundation?
A suspended slab is provided spaced apart from a ground surface by a void using evacuation rather than lifting. Structural supports are provided extending upward from the ground surface to a desired height. A temporary removable material is placed on top of the ground and extend upward to the desired height.
What is a ground slab?
The term ‘floor slab’ usually refers to a floor that has been formed using concrete (and generally steel reinforcement) and may form part of the structure of a building. It may form the floor of a basement, at ground level or at upper levels.
What type of floor is suspended?
What are they? A suspended floor is a ground floor with a void underneath the structure. The floor can be formed in various ways, using timber joists, precast concrete panels, block and beam system or cast in-situ with reinforced concrete. However, the floor structure is supported by external and internal walls.
Why are floors suspended?
Suspended timber floors, which are typically found in older houses, are normally made from timber floorboards which are then attached to joists just above the foundations of a house. This creates a small gap and allows ventilation and air movement to prevent damp forming in the timber joists.
What is a suspended floor?
A suspended floor is a ground floor with a void underneath the structure. The floor can be formed in various ways, using timber joists, precast concrete panels, block and beam system or cast in-situ with reinforced concrete. However, the floor structure is supported by external and internal walls.
What is formwork and how is it used when constructing suspended concrete floor slabs?
When suspended concrete slabs are constructed that are not directly supported by the ground, slab formwork is required. Slab formwork includes formwork panels, stringers, joists, shores, and other supporting materials that enables the concrete to be poured and set above the ground.
What is typical thickness of suspended concrete slab?
Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks.
How do you cast a slab?
Slab Concreting Work Procedure
- Providing Construction Joint. The construction joint shall be pre-decided and fixed prior to start of the concreting.
- Production of Concrete. Stock of material shall be sufficient to start the concrete.
- Concrete Pouring.
- Finishing Concrete Surface.
- Curing Concrete.