Joints in Rigid Pavings ~ longitudinal and transverse joints are
required in rigid pavings to:-
Limit size of slab.
Limit stresses due to subgrade restraint.
Provide for expansion and contraction movements.
The main joints used are classified as expansion, contraction or
longitudinal, the latter being the same in detail as the contraction
joint differing only in direction. The spacing of road joints is
determined by:-
Slab thickness.
Whether slab is reinforced or unreinforced.
Anticipated traffic load and flow rate.
Temperature at which concrete is laid.
Road Construction