- It reduces the overall height of the structure.
- Flat slabs are capable to carry concentrated loads.
- Requires less formwork.
- As reinforcement detailing of flat slabs is simple it is easy to place.
- Better quality control.
What is a flat slab give advantages and disadvantages of it?
| 1 Span length is medium. In flat plate system, it is not possible to have large span. | 2 Not suitable for supporting brittle (masonry) partitions | 3 Use of drop panels may interfere with larger mechanical ducting |
|---|
What is the main disadvantage of a flat slab?
Disadvantages of Flat Slab
They
are not suitable for masonry partition of brittle nature
. It uses drop panels that may interfere with oversized mechanical ducting. They have middle strip deflection, which may be critical. They have more thickness as compared to typical RCC Slabs.
What is a flat slab?
What is Flat Slab? The flat slab is
a two-way reinforced concrete slab
that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. … Using a drop panel without a column capital in flat slab. Using a column capital without drop panel in flat slab.
What are the advantages of flat slab?
- It reduces the overall height of the structure.
- Flat slabs are capable to carry concentrated loads.
- Requires less formwork.
- As reinforcement detailing of flat slabs is simple it is easy to place.
- Better quality control.
What is the maximum span for flat slab?
Examples of slab thickness and indication of maximum span for solid slabs with ordinary ( ) and prestressed ( ) reinforcement according to [2]. The allowed recommended span lengths for continuous slabs are equal to
13.6m for two-way slabs and to 12.5m for unidirectional slabs
.
Why drop is provided in flat slab?
Drop panels
increase the shear strength of the flat slab floor
(i.e it resists shear). Drop panels increase the flat slab’s negative moment capacity. Drop panels reduce deflection by stiffening the flat slabs.
Do flat slabs need beams?
Flat slabs are considered to
be faster
and more economic than other forms of construction, as partition heads do not need to be cut around downstand beams or ribs. Flat slabs can be designed with a good surface finish to the soffit, allowing exposed soffits to be used.
Is flat slab economical?
Flat slab structure
is more economical than that of conventional slab structure
. The cost of flat slab structure is reduced by 15.8% compared to conventional slab structures. … Flat slab structures are the best solution for high rise structure as compared to conventional slab structure.
What is the difference between flat slab and solid slab?
The main difference between flat slab & conventional slab-beam system is that
the one is directly supported on the column while another system has a beam for support
. The load is transferred directly from slab to column in the flat slab.
Where is flat slab used?
The function of this type of slab is to provide a plain ceiling surface, which will give the best diffusion of light. They are commonly used in
hotels, parking lots, commercial buildings
or places where beam projections are not suitable for height controls or even aesthetics view.
What is the minimum thickness of flat slab?
The minimum slab thickness is
125 mm or L/36
for interior continuous panels without drops and end panels with drops or L/32 for end panels without drops or L/40 for interior continuous panels with drops.
How do you make a flat slab?
Proportioning of flat slabs: As per cl. 31 of IS456-2000, the
span by depth ratio of two way slab
is applicable for flat slabs and the values can be (l/d)modified by 0.9 for flat slabs with drops.
What is the use of column head of flat slab?
Column heads are used to
increase the shear strength of slabs and to reduce the bending moment in the slab by reducing the effective span
.
What are the components of flat slab?
Major components of flat slab are
capital/head, drop panel, columns strip and middle strips
.
What is the maximum thickness of slab?
Thickness of concrete slab depends on loads and size of the slab. 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.
