Question

Prestressed concrete is more desirable in case of

• A. cylindrical pipe subjected to internal fluid pressure
• B. cylindrical pipe subjected to external fluid pressure
• C. cylindrical pipe subjected to equal internal and external fluid pressures.
• D. cylindrical pipe subject to end pressures

Answer 1

The correct option is A cylindrical pipe subjected to internal fluid pressure

When cylindrical pipe is subjected to internal fluid pressure the hoop stress is tensile in nature and when cylindrical pipe is subjected to external fluid pressure the hoop stress is compressive in nature. Prestressing is required when cylindrical pipe is subjected to internal fluid pressure as the concrete is weak in tension.