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FAQ's






  1. How can I use rebars, so that less material is consumed?
    It is advised to take help from a design engineer for optimum use of construction material including rebars. However it is found that using high strength rebars in place of lower strength saves on steel consumption. For example Fe 500D grade steel will be economical if used in place of Fe 415 grade.
  2. Why should I use Tiscon? All rebars are same.
    All rebars cannot be the same because they are produced from different manufacturing materials and processes. There are certain mechanical and chemical properties specified in the Indian Standard code IS 1786 – 2010. A good rebar should meet all these criteria irrespective of its look. Every piece of Tata Tiscon rebar not only meets these criteria but exceeds them to the benefit of consumers. This is because Tata Tiscon is manufactured from virgin steel (made from Tata Steel’s own mines) and rolled with superior technology and strict discipline. Strong quality control ensures that each rebar reflects the trust and quality that the Tata brand name commands.
  3. How is Tata Tiscon economical inspite of high price?
    Tiscon rebars have uniform pricing system across the territory. It is sold on recommended consumer price (RCP). In all retail outlets of Tiscon, RCP is always displayed. Tata Tiscon is manufactured from quality raw material obtained from its captive mines and collieries. World class processes ensure that all the mechanical and chemical properties of each rebar piece are well above the specified standards. The wastage of Tiscon rebars due to breakage while bending is extremely less compared to ordinary rebars. Also, the weight tolerance is kept in such a way that the user gets the maximum length in same weight.
  4. How is Tata Tiscon Fe 500 SD much more effective in seismic prone zone?
    An essential characteristic for earthquake zone construction is that the rebar should be able to bend without breaking. Structural designs take into account yield strength of rebars, factoring in all dead, live loads and safety limits. Frequent shaking of the ground and its amplitude may generate stresses that exceed the rebars’ yield strength. To prevent the collapse of buildings, it is necessary that even when the stress exceeds the yield strength, it should not exceed the tensile strength. This has been made possible with Tata Tiscon Super Ductile Rebar, designed to have a much higher UTS/YS ratio compared to ordinary rebars. In other words, they can be plastically deformed to a much larger extent without crossing their ultimate tensile strength.
  5. Is there any restriction imposed for the grade of the concrete by using Tata Tiscon Fe 500 SD?
    There is no restriction on the grade of the concrete especially for super ductile rebars. All grades of concrete which can be used with Fe 500D rebars can also be used with Fe500-SD
  6. What is the benefit of buying steel on per piece basis?
    There are many benefits associated with this. Firstly the wastage of steel is minimized because you can buy exactly as per the requirement i.e. as many pieces as required, which may not be possible if you buy by weight. Secondly you don’t have to worry about the weight accuracy while purchasing rebar. Tiscon rebars are available in standard length and weight, thus accuracy is very well maintained within the permitted tolerance limits.
  7. What is the proof of the purity of steel from Tata?
    There are no easy visual methods to prove purity of a steel rebar. Only certain mechanical and chemical tests carried out by qualified personnel in authorized laboratories can provide facts to prove purity and superiority of a steel rebar. Tiscon rebars are manufactured after passing through rigorous testing and quality controls. Our laboratories are also certified by NABL – National accreditation board of Laboratories – meaning Tata Steels’ testing processes are standard and flawless.
  8. How does Fe 500D lead to savings in steel consumption?
    Fe 500D rebars have higher strength as compared to Fe 415 grade. Steel consumption depends on the strength of the rebar. Higher the Strength lower will be the consumption.
  9. What are the delivery terms of TISCON?
    Tata Tiscon is delivered to the customers free of cost for the sites located within the municipal limits of town/city from where the material is procured.
  10. Why are TATA TISCON rebars red inspite of being technically superior?
    There is no relationship between technical superiority and redness of rebars. Sometimes due to coming into contact with moisture and air, rebars develop a reddish color. Reddish rebars can very well be used in construction if they are in proper physical form, weight and strength. So, inspite of being reddish at times, TATA TISCON rebars conform to world class standards.
  11. Importance of cover in RCC construction?
    Concrete cover to steel rebars has two main functions. First, sufficient rebars helps steel rebars develop bonding with concrete and second, it prevents water and moisture to come into contact with rebars which may cause corrosion.
  12. What is the overlapping strength of rebar?
    Lap length is the length overlap of rebars tied to extend the reinforcement length. Lap length about 50 times the diameter of the bar is considered safe. Laps of neighboring bar lengths should be staggered and should not be provided at one level/line. At one cross section, a maximum of 50% rebars should be lapped. In case required lap length is not available at junction of space and other constraints, bars can be joined with couplers or welded (with correct choice of method of welding).
  13. What is the ratio of cement, sand, aggregate and water in concrete mix?
    There is no fixed rule for concrete mix. It depends on the grade of concrete. Concrete can be classified in 3 classes, namely – Ordinary concrete (M20 and lower grades), Standard Concrete (from M25 to M55 grade) and High strength concrete (M60 and above grades). Minimum grades recommended by the Indian standards for the reinforced concrete is M20 which can be obtained by mixing cement, sand and coarse aggregate in the ratio of 1:1.5:3 (approx by weight). Similarly, M25 can be obtained by mixing these ingredients in the ratio of 1:1:2 (approx by weight). Water cement ratio could be 0.6, which implies that about 30 liters of water can be added for each 50 Kg bag of cement.
  14. What precautions should be observed while rebar binding?
    Reinforcement bars should be free from loose rust, oil paints, mud etc. It should be cut, bent and fixed properly. The reinforcement shall be placed and maintained in position by providing proper blocks, spacers, supporting bars, laps etc. Reinforcements shall be placed and tied such that concrete placement is possible without segregation, and compaction possible without an immersion vibrator.
  15. What to do with exposed part of the bar?
    It can either be painted or wrapped with plastic sheets. It should be ensured that exposed part of the rebars should not come into contact with moisture and air. If exposed rebars are protruding, then to prevent any accident, rebars can be bent over or covered with plastic “mushroom” caps.
  16. Can we use extra water during mixture?
    Extra water should not be added in concrete at any stage. Water should be added only as per design of concrete mix

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