Question

Which one of the following is correct for horizontal spacing between the group of prestressing cables as per IS code?

• A. Greater of, 40 mm and 5 mm plus maximum size of coarse aggregate
• B. Greater of, 40 mm and -5 mm plus maximum size of coarse aggregate
• C. 50 mm
• D. 25 mm

Answer 1

The correct option is A Greater of, 40 mm and 5 mm plus maximum size of coarse aggregate

As per clause 11.1.8.2 of IS: 1343-1980, in case of group of cables or ducts of grouped cables minimum clear horizontal spacing shall be greater of the following:
(i) 40 mm
(ii) 5 mm plus maximum size of aggregate