Question

List TWO (2) advantages and TWO (2) disadvantages of using pre-stressing concrete

Answer 1

Advantages:

1. In PSC Whole section of the structure is effective in taking both compression and tension.
2. Prestressing the tendons and anchoring it against the concrete produces desirable stresses and strains which serves to reduce or eliminate cracks in concrete.
3. Prestressing help to improve the ability to take shocks, impact loads and repeated working loads

Disadvantages

1. It requires complicated tensioning equipment.
2. More complicated formwork, also formwork are costly.
3. Skilled supervision is required.