Table of Contents
What is the function of a slab?
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 a rib in RCC?
The top part of the Slab which acts along the beam to resist the compressive stress is called flange. The part which lies below the slab and resists the shear stress is called rib.
What is the rib in construction?
And all done with low wages laborers. At left a sketch of the steel reinforcement of the stem (rib) where rebars and stirrups are designed by structural calculations, to take the loads and stress depending of the conditions of the location of the building.
Where is ribbed slab used?
Ribbed slabs are suitable for medium to heavy loads, can span reasonable distances, are very stiff and particularly suitable where the soffit is exposed. Slab depths typically vary from 75 to 125 mm and rib widths from 125 to 200 mm. Rib spacing of 600 to 1500 mm can be used.
What is slab system?
This system consists of beams framing into columns and supporting slabs spanning between the beams. It is a very traditional system. The depth of slab between the beams can be initially sized using the span-to-depth ratios for a flat plate. Prestressing is not normally used with this system.
What do you mean by rib?
Definition of rib (Entry 1 of 4) 1a : any of the paired curved bony or partly cartilaginous rods that stiffen the walls of the body of most vertebrates and protect the viscera. b(1) : a cut of meat including a rib — see beef illustration. (2) : a boneless cut of meat (such as beef or pork) from a rib section.
What is a ribbed slab?
The ribbed slab is a slab with ribs at regular intervals along the length, and is often used for mounting on concrete. Such a slab is usually made of reinforced concrete and is cast in sections of a fixed length. The ribs perform the function of corner reinforcement, particularly on a lower-height slab.
What is the difference between rib reinforcement and beam reinforcement?
The rib reinforcement follows the same rules with the beam reinforcement. However, mainly as far as the stirrups are concerned, the amount of placed rebars is not as large as it is in beams. Between the ribs, the slab is usually reinforced with a common wire mesh. Sandwich slab reinforcement details
Which type of slab is best suited for flat areas?
Ribbed Slab are best suited for flat areas. Ripped slab resists shrinking and is less expensive than strengthened rafts and footing slabs. A ribbed slab is a concrete slab made of many expanded metal tubes that are tightly woven together to create the walls of a building.
What are the advantages and disadvantages of sand sandwich slabs?
Sandwich slabs may have the disadvantage of a larger weight compared to the ribbed ones but on the other hand, they have the advantage that their spans and supports behave in the same proper way.