What is B in slab design?
b) Depth of slab:
The depth of slab depends on bending moment and deflection criterion.
What does RC mean in concrete?
Reinforced concrete
Reinforced concrete (RC) is a versatile composite. It is one of the most widely used materials in construction today.
What is RC flat slab?
Reinforced concrete flat plate is a type of structural system containing slabs with uniform thickness supported directly on columns without using beams. Flat plates are commonly used in buildings where relatively low gravity loads are applied.
What is the design of slab?
There are two types of slabs – one-way slab and two-way slab. Two-way slabs are supported on four sides while one-way slabs are supported on two opposite sides. Two-way slabs carry load in two directions and so reinforcements are provided in both directions.
How do you read a slab design?
How To Read Slab Drawing at Site | Structure Drawing Part -4 – YouTube
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 4 types of concrete?
Let’s take a quick look at the most common types of concrete and what they are used for:
- Reinforced Concrete.
- Lightweight Concrete.
- High-Strength Concrete.
- High-Performance Concrete.
- Precast Concrete.
What is RC structure?
The reinforced concrete structure refers to the members, such as beams, boards, columns, roof trusses, consisting of concrete and steel bars. In these structures, the steel bars are enwrapped by concrete, but their mechanical properties will still lose due to the fire to destroy the whole structure.
What are the disadvantages of flat slab?
Disadvantages of Flat Slab
| 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 |
Is flat slab expensive?
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.
What is the minimum thickness of RCC slab?
Minimum thickness of slab
Minimum thickness of rcc slab is 4″ or 100mm, 3″ for side walk, 4″ for patios, 6″ for driveway and minimum 4″ thick for parking. It will be restricted to 4 times the nominal size of aggregate.
How do you identify a two way slab?
If slabs may be supported by columns only, in this case, two-way action will prevail. If the ratio of long side / short side > 2 it is considered as one-way slab, and if longer side to shorter side ratio < 2 then it is considered as a two-way slab.
How do you determine the thickness of a slab?
Standards like ACI 318 have specified the minimum thickness of the slab based on the span of the slab.
- Simply Supported Slab = Span / 20.
- One End Continuous Slab = Span / 24.
- Both End Continuous Slab = Span / 28.
- Cantiliver = Span / 10.
How do I know what type of slab I have?
If the ratio of long side / short side > 2 it is considered as one-way slab, and if longer side to shorter side ratio < 2 then it is considered as a two-way slab.
What are the four different types of slabs?
One-Way Slabs on Beams.
Which concrete is best for slab?
GRADE: C25 CONCRETE
A multi-purpose concrete that is used on a wide range of commercial and domestic construction sites. C25 is often used as a foundation concrete mix when pouring foundations (footings). It is also the ideal concrete for domestic slab foundations for house and bungalow floors.
What is the strongest concrete?
Ultra-High Performance Concrete (UHPC) is a cementitious, concrete material that has a minimum specified compressive strength of 17,000 pounds per square inch (120 MPa) with specified durability, tensile ductility and toughness requirements; fibers are generally included in the mixture to achieve specified requirements …
What are the 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. What are slab on grade or ground slab? The slab which is cast on the surface of the earth is called a Ground slab.
What is the maximum span for flat slab?
The allowed recommended span lengths for continuous slabs are equal to 13.6m for two-way slabs and to 12.5m for unidirectional slabs. The published recommendations resulted in that the constant depth slabs are erected worldwide with the maximum span limit set at around 12÷13m.
What is the minimum thickness of flat slab?
The minimum thickness of Flat slab shall be 125 mm. (Clause 31.2. 1, IS:456 2000). D is the right answer.
What is normal 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 size of RCC slab?
In a residential building it is 9 ʺ × 12 ʺ or 225 mm × 300 mm standard size according to (IS codes). The minimum RCC beam size should not be less than 9 ʺ × 9 ʺ or 225mm × 225mm with the addition of a 125mm slab thickness. The size of the columns depends on the total load on the columns.
What are the types of two way slabs?
Types of Designs for Two-way Slab
- Two-way solid slab (with beams)
- Two-way Waffle Slab (with Beams)
- Two-way Waffle Slab (with Integral Beams)
- Two-way Slab with the Hollow Block.
- Two-way Flat Plates Slab.
- Two-way Flat Slabs.
- Two-way Waffle Flat Slab.
Which slab is better one way or two way?
In case of one-way slab, if we increase the beams width to depth ratio, and increase the percentage of steel, perpendicular to the direction of bending, then one-way slab will be more economical and will be stronger than two way slab.