Question

The expansion joints in floors and walls should normally be provided at a spacing of not more than ___________

(a) 30 m

(b) 45 m

(c) 50 m

(d) 55 m

This question was posed to me during an interview.

My question is taken from Joints Provision and Water Bars in RCC Ducts of Aqueducts in portion Cross Drainage Work of Irrigation Engineering

Answer 1

Correct choice is (a) 30 m

To explain: The maximum spacing of 30 m is provided between successive expansion joints or between the ends of the structure. The provision of movement joints in each element can be considered independently where sliding joints are provided between walls and either the floor or roof.