The Constructor

Prestressed Concrete Principles, Need and Advantages

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Process of induction of compressive stresses in the structure before it is put to its actual use is known as Prestressing. Prestressed Concrete member is a member of concrete in which internal stresses are introduced in a planned manner, so that the stresses resulting from the superimposed loads are counteracted to a desired degree.

Introduction to Prestressed Concrete

Need of Prestressing

Advantages of Prestressed Concrete


2. Adaptability

3. Fire resistance

4. impacts local economy directly

5. Fast and Easy Construction

6. Aesthetics

Disadvantages of Prestressed Concrete

Although prestressing has many advantages, there are still some drawbacks of this process.<

Comparison of Prestressed Concrete Beams with RCC Beams

  1. In RCC beams, the concrete in the compression side of the neutral axis alone is effective and the concrete in the tension side is ineffective. But, in the prestressed beams, the entire section is effective.
  2. Reinforced concrete beams are generally heavy. Prestressed concrete beams are lighter.
  3. RCC beams being heavy and massive are more suitable in situations where the weight is more desired than strength. Pre stressed beams are very suitable for heavy loads and long spans.
  4. In RCC beams, there is no way of testing the steel and the concrete. In prestressed concrete beams, testing can be done while pre stressing.
  5. RCC construction does not involve many auxiliary units. But prestressed beams require many auxiliary units.

Assumptions in design of prestressed concrete members

Prestressed concrete members are analysed and designed on the basis of the following assumptions given below:

Principles of Prestressed Concrete

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