How do I make a RCC roof slab?
Two way simply supported slab d = (L/20) to (L/30)…Depth or Thickness of Slab:
- Effective depth d= Span /((L/d)Basic x modification factor)
- For obtaining modification factor, the percentage of steel for slab can be assumed from 0.2 to 0.5%.
- The effective depth d of two way slabs can also be assumed using cl.
What is RCC roof slab?
RCC Roof Slab – In the construction industry, when they use the word concrete, they are talking about reinforced cement concrete, also known as RCC. The reinforced concrete features combined the strength of cement and steel bars which are the basic components of a modern structural design.
What is standard thickness of roof slab?
RCC roof slab thickness is considered generally 150mm (6 inches) for residential buildings and commercial buildings with reinforcement details as per design.
How thick is a concrete roof slab?
5 to 14 inches
Slabs generally range from 5 to 14 inches in thickness. Spans are up to 35 feet, but may be extended by p o s t – t e n s i o n i n g .
Which mm rod is used for roof?
For Roof slabs, 8 mm, Iomm, 12mm bars are used according to the Load, span of the roof slab and also it’s design factors. 6mm size is used as distribution bars.
What is the ratio for RCC?
What is RCC? Why TMT Bar is required in RCC?
| Concrete Grade | Proportion of Cement : Sand : Stone pieces | Expected Compressive Strength at 28 days |
|---|---|---|
| M10 | 1 : 3 : 6 | 10 N/mm2 or 100 Kg/cm2 |
| M15 | 1 : 2 : 4 | 15 N/mm2 or 150 Kg/cm2 |
| M20 | 1 : 1.5 : 3 | 20 N/mm2 or 200 Kg/cm2 |
| M25 | 1 : 1 : 2 | 25 N/mm2 or 250 Kg/cm2 |
What ratio is RCC roofing?
Generally 1:2:4 and 1:1.5: 3 ratios of RCC are used in construction work. Where cement concrete 1:2:4 is used; it means 1 part of cement 2 parts of fine aggregate/coarse sand and 4 parts of coarse aggregate. This ratio of cement concrete gives high strength of cement concrete and is recommended for following works.
How is RCC slab thickness calculated?
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.
Which mm rod is best for roof?
For Roof slabs, 8 mm, Iomm, 12mm bars are used according to the Load, span of the roof slab and also it’s design factors. 6mm size is used as distribution bars. For Concreting 1:2:4 (150 grade) mix. is suitable, ie.
What is the minimum thickness of a slab?
The minimum thickness of the slab shall be 125 mm.
What is RCC slab?
Where Reinforcement is called a steel rod. The slab should be strong enough to bear the required load according to design. The slab should be provided steel bars to withheld tensile force, so this slab is called the RCC slab. I have given an example for the calculation of the quantity steel rod in slab below.
What is the minimum thickness of a RCC roof?
For slab thickness, it is advised to keep it at least 5” because at some places the slab depth can be less due to electrical pipes and internal wiring. The reinforcement details for RCC roof can be categorized in two ways:
Why do people prefer RCC roofing?
The reasons people prefer RCC as a structural element for roofs and slabs is that: If you follow the minimum standards for structural design for modern day buildings you can opt for creating the RCC without a beam, it is called a flat slab.
What is the full form of RCC?
The full form of RCC is reinforced concrete cement. Where Reinforcement is called a steel rod. The slab should be strong enough to bear the required load according to design. The slab should be provided steel bars to withheld tensile force, so this slab is called the RCC slab.