What is the maximum span for flat slab?

Theoretically there is no limit on maximum length. But practically and economically they are restricted. A flat slab between span of 6.0 to 9.0m is economically feasible.

What is a flab slab lift slab?

Lift-Slab Construction is a precast method of construction of slab on the ground and then lifting it to the structure. A type of precasting used in building construction involves casting floor and roof slabs at or near ground level and lifting them to their final position, hence the name lift-slab construction.

What is slabs in building construction?

A slab is a structural element, made of concrete, that is used to create flat horizontal surfaces such as floors, roof decks, and ceilings. A slab is generally several inches thick and supported by beams, columns, walls, or the ground.

What is meant by ribbed slab?

Ribbed slabs are made up of wide band beams running between columns with narrow ribs spanning the orthogonal direction. Normally the ribs and the beams are the same depth. A thin topping slab completes the system. Waffle slabs tend to be deeper than the equivalent ribbed slab.

What is the maximum length of concrete slab?

Reinforced concrete allows a wide range of structural options and provides cost-effective solutions for a multitude of situations—from residential buildings with moderate live loads and spans of about 25 ft, to commercial buildings with heavier live loads and spans ranging from 40 ft to 50 ft and beyond.

What is slab span?

Introduction. In structural engineering and architecture, ‘span’ is the term given to the length of a structural component – eg beam, floor, roof or floor truss – that extends (or ‘spans’) between two supports.

Is lift slab construction still used?

A nationwide investigation into the method was launched and the practice was temporarily banned in Connecticut. The collapse effectively sparked the end of lift slab construction in the United States.

What is slab thickness?

In general, 6 inch (150mm) slab thickness is considered for residential and commercial buildings with reinforcement details as per design. Methods used for finding slab thickness varies for different types of slabs.

What is the difference between solid and ribbed slab?

A Ribbed Slab gives considerable extra strength in one direction while a waffle slab gives added strength in both directions. And this is possible only in monolithically cast concrete which is the two-way grid of beams. In comparison to the solid slab, the span limits of ribbed slabs are considerably longer.