What are the different classification of reinforced concrete slab?

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.

What is K in slab design?

Design Example of a two-way slab The floor slab (PANEL 1) is spanning in two directions, since the ratio (k) of the longer side (ly) to the shorter side (lx) is less than 2. Hence, k = Ly/Lx = 3.825/3.625 = 1.055 (say 1.1, however it is more appropriate to interpolate from the table).

What are different types of slab?

• FLAT SLAB. Flat slab is also known as beam-less slab because it is supported directly by columns or caps.
• CONVENTIONAL SLAB.
• HOLLOW CORE RIBBED SLAB OR HOLLOW CORE SLAB.
• HARDY SLAB.
• WAFFLE SLAB.
• SUNKEN SLAB.
• PRESTRESSED CONCRETE SLAB.
• PRECAST SLAB.

What is rib slab?

Ribbed or waffle slab is a slab system which consists of series of parallel reinforced concrete T beams framing into reinforced concrete girders. The slab is the flange of the beam and the extended part is the web. The extended part is known as ribs. The spacing between the ribs should be in general 20-30 inch.

What are the two types of slab?

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 is difference between flat slab and normal 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.

How do you fix the depth of a slab?

b) Depth of slab:

1. Effective depth d= Span /((L/d)Basic x modification factor)
2. For obtaining modification factor, the percentage of steel for slab can be assumed from 0.2 to 0.5%.
3. The effective depth d of two way slabs can also be assumed using cl. 24.1,IS 456 provided short span is <3.5m and loading class is <3.5KN/m.

How is slab calculated?

The current tax slab starts at 5% for income between ₹2.5 lakh and ₹5 lakh, 20% if your income is between ₹5 lakh and ₹10 lakh and 30% for income above ₹10 lakh, for individuals less than 60 years old.

What is the function of rib slab?

Ribbed and waffle slabs provide a lighter and stiffer slab than an equivalent flat slab, reducing the extent of foundations. They provide a very good form of construction where slab vibration is an issue, such as laboratories and hospitals.

When to use BS 8110-2 structural use of concrete?

Concrete is assumed to have zero tensile strength. b) For non-critical sections, the characteristic stress-strain curves given in Figures 2.2 and 2.3 of BS 8110-1:1997 may be used for reinforcement or prestressing tendons. For concrete, Figure 2.1 of this part of BS 8110 may be adopted.

How to calculate reinforced concrete to bs8110 ratio?

For greater spansthese values should be multiplied by 10/span. e.g. for 15m span 10/15 = 0.66666 Reinforced Concrete Design to BS8110 Structural Design 1 – Lesson 5 3 These BASIC ratios may be enhanced by provision AND over provision of both tension and compression reinforcement as shown by the following tables. 4.2.1 Tension

What do you need to know about bs8110 reinforcement?

4.4 Reinforcement Details The code (BS8110) requires the final design to pay attention to: 1. Min and Max reinforcement as a percentage of the gross CSA. (Cl. 3.12.5.3. & 3.12.6.1) – This will on the one hand, help the control of cracking, increase durability, while on the other assist placing and compaction.

What are the recommendations of BS 8110-1?

BS 8110-1 gives recommendations for design and construction. These recommendations relate particularly to routine building construction which makes up the majority of structural applications; they are in the form of a statement of design objectives and limit state requirements followed by methods to ensure that these are met.