Question
Download Solution PDFThe recommended maximum spacing of contraction joints in 15 cm thick reinforced slabs of rigid pavements, for highways as per IRC 15 : 1981 is _______
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Contraction Joints:
- These joints are intended to control the cracks in a slab that are developed due to the stresses caused by moisture-related concrete shrinkage, thermal contraction, temperature warping.
- They may be oriented transversely (i.e. perpendicular to the direction of traffic flow) or longitudinally (i.e. parallel to the direction of traffic flow).
According to IRC 15: 1981, The maximum spacing of contraction joints is given in the below table:
| Categories of slab |
Slab Thickness (cm) |
Maximum Contraction Joint Spacing (m) |
| Unreinforced Slabs | 10 | 4.5 |
| 15 | 4.5 | |
| 20 | 4.5 | |
| Reinforced Slabs | 10 | 7.5 |
| 15 | 13.0 | |
| 20 | 14.0 |
Last updated on Jun 11, 2024
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