What is topping slab?

What is topping slab?

Concrete topping slab is an overlay designed to provide a dense, abrasion-resistant, and a finished floor surface for multiple purposes such as providing a wearing course to support traffic loads in parking facilities and bus terminals, providing a level surface for interior floors, providing special base for …

What are the different types of slabs?

What are the 16 different types of slabs in construction?

• One-Way Flat Slab.
• Two-Way Flat Slab.
• Kitchen Slab.
• Sun Shade Slab.
• Lintel.
• Sunken Slab.
• Cable Suspension Slab.
• Pre-Tension Slab.

What are the two types of slabs?

The major types of concrete slabs used in construction are one-way joist slab, flat slab, flat plate, waffle slab, hollow core slab, precast slab, slabs on grade, hardy slab, and composite slab. 2.

How thin can a topping slab be?

Answer: You can top a slab, but you must be careful about getting the topping material too thin. The Portland Cement Assn. recommends that topping over hardened concrete not be less than 2 inches thick at any point.

How thick is concrete topping?

The minimum recommended thickness is 1 to 2 in. (25 to 50 mm) for a fully bonded concrete overlay placed on a base slab that is practically free of cracks and in which the concrete is sound, clean, and of good quality. The use of welded wire fabric reinforcement is usually not warranted under these conditions.

What is the purpose of placing a topping slab over a precast slab?

The topping may increase the flexural strength, shear strength, and bending stiffness of the slab if composite action is developed with the hollow-core units. Composite action between the cast-in-place concrete topping and the hollow-core unit is developed primar- ily through bond at the interface.

What is LX in slab?

For any slab, if Ly = Lx, the slab has a tendency to bend in both directions. With an increase of Ly, the tendency of bending along Ly is reduced and that on Lx is increased. When Ly/Lx ≥ 2, the slab bends only in X directions.

What are four different types of slab?

There are four different types of concrete Flat Slabs:-

• Slab without drop and column without column head(capital).
• Slab with drop and column without column head.
• Slab without drop and column with column head.
• Slab with drop and column with column head.

What goes on top of concrete slab?

Best Flooring for Concrete Slab Foundation

1. Engineered Wood. Natural hardwood flooring offers undeniable beauty and durability.
2. Vinyl. As a longstanding choice for kitchens and bathrooms, vinyl has a reputation for extreme water resistance.
3. Laminate.
4. Carpet.
5. Tile.

What is concrete overlay?

Answer: A concrete overlay is a thin color concrete cement based products that go over existing concrete for repair or decorative reasons. Overlays can be applied as thin as a feather finish up to in most cases 3/4″ depending on the desired finish.

What is the minimum thickness for a topping slab?

A topping slab is a concrete slab poured over an existing subfloor, generally made of concrete or plywood. A topping slab is often intended to be purely decorative but nevertheless it has to maintain structural integrity. In order to do so, the minimum thickness needs to be 2″ (2-1/4″ on hydronic heat systems).

Which is the best definition of a topping slab?

Topping concrete is defined as a layer of high strength concrete placed on an old, worn out concrete surface to provide a dense, abrasion-resistant surface, to increase structural depth and strength of the base concrete. A topping slab is a concrete slab poured over an existing subfloor, generally made of concrete or plywood.

What kind of concrete is used for topping?

In this type of slab, the concrete topping is adhered to or bonded with the underlying concrete slab. Bonded slabs are usually used for both structural and functional purposes. The Bonded concrete slab can be used for both light duty as well as heavy-duty slabs.

When to use unbonded topping on a concrete slab?

Unbonded topping is also used when it is preferable to not bond the topping to the base course, so that the two courses can move independently, or so that the top courses can be more easily replaced at a later point of time. For light-duty slab, concrete topping material is similar to the slab concrete.

What is the construction process for concrete topping?

The initial construction process of concrete topping includes the inspection and analysis of the condition of existing surfaces. The slab (surface) whether sounds structurally or not is determined so that the bonded or unbonded type of topping required can be determined. The slab whether its asphalt, concrete or any other also must be analyzed.