4.5 m
4.0 m
3.5 m
3.0 m
Answer is Right!
Answer is Wrong!
The correct answer is A. 4.5 m.
The length of an end span of a continuous slab is usually kept 0.5 m shorter than the length of an intermediate span. This is done to ensure that the end spans do not deflect more than the intermediate spans, as this can lead to cracking and other problems.
In this case, the length of the intermediate span is 5 m. Therefore, the length of the end span should be 5 – 0.5 = 4.5 m.
Option B is incorrect because it is the length of an intermediate span. Option C is incorrect because it is less than the length of an intermediate span. Option D is incorrect because it is the length of a cantilever beam, which is a type of beam that is supported only at one end.