Civil Engineering MCQAE Level Civil Engineering
Dowel bars at transverse expansion joints in rigid (cement concrete) pavement primarily:
Transportation EngineeringRigid Pavement JointMEDIUM
Choose the correct answer
A
Act as reinforcement for the slab
B
Transfer loads between adjacent slabs while allowing longitudinal movement (expansion/contraction)
C
Prevent warping
D
Mark the joint location
Correct Answer
B. Transfer loads between adjacent slabs while allowing longitudinal movement (expansion/contraction)
Why is this the answer?
Dowel bars (smooth, round, coated with debonding agent on one side) transfer shear across transverse joints while allowing longitudinal thermal movement. Tie bars (at longitudinal joints) are deformed bars that prevent separation of slabs but do NOT allow movement.
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