(a) DESCRIBE the reasons why concrete has to be pre-stressed before use as a load-bearing beam....

(a) DESCRIBE the reasons why concrete has to be pre-stressed before use as a load-bearing beam. [3 MARKS]

(b) EXPLAIN with DIAGRAMS how pre-stressed concrete is made. [5 MARKS]

(c) EXPLAIN why pre-stressed concrete loses its strength when subjected to excessive heat from a fire. [2 MARKS]

Expert Solution

Ally Wells answered 1 year ago

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