Sanjer Bela Civil Engineering Site

  Advantage and disadvantage of RCC Advantage 1) Strength :- Rcc has very good strength in tension as well as compression. 2) Durability :- Rcc structures are durable if designed and laid properly. They can last upto 100 years. 3) Mouldability :- Rcc section can be given in any shape easily by properly designing the framework.  4) Ductility :- The steel reinforcement imparts ductility to the rcc structures. 5) economy :- Rcc is cheaper as compared to steel as prestressed concrete. 6) Transporation: - the raw materials which are required for rcc i.e. cement ,sand, aggregate, water, and steel are easily availableand can transported easily. Now a days Raidy mix concrete is used, 7) Fire resistance :- Rcc structures are more fire resistant than other commonly used construction materials like steel and wood. 8) Permeability :- Rcc is almost impermeable to moisture. 9) seismic resistance :- Properly designed Rcc structures are extremely resistant to earthquakes. Disadvantages 1) ...

  1)      As per IS: 456 - 1978, the pH value of water shall be not less than 6 . 2)        Spacing of stirrups in beams of effective depth’d’ should not be more than 0.75d or 300 mm , whichever is less. 3) In a singly reinforced beam, the effective depth is measured from its compression edge to the centroid of the tension reinforcement . 4) An R.C.C. roof slab is designed as a two-way slab if the ratio of longer span to shorter span is less than 2 . 5) The value of the maximum strain in concrete under bending compression in outermost fibre, as per IS 456:2000 (Limit State Method), is 0.0035 . 6)   The minimum headroom over a stair must be 2.2 meters . 7) An R.C.C. column is treated as long if its slenderness ratio is greater than 12 . 8) The toe projection of foundation slabs is taken as minimum 150 mm or 1/5th of the depth of foundation , whichever is more (depends on site conditions, often approx. 1/3rd to 1/5th of...