According to IS 6509 : 1985, the recommended maximum spacing of expansion (E) and contraction (C) joints in Unreinforced cement concrete pavements of thickness 0.15 m are : (codes E and C used to indicate joints in answer options)
1
E – 36 m ; C – 4.5 m
2
E – 25 m ; C – 4 m
3
E – 27 m ; C – 4.5 m
4
E – 20 m ; C – 3.5 m