Ponding / improper pitch Ponding, or improper pitch, occurs when pavement is not sloped correctly, allowing water to collect instead of draining away. Standing water can accelerate surface deterioration.
Proper pavement pitch directs rainwater toward gutters, drains, or catch basins. When slopes are inadequate, water may remain on the surface, increasing the risk of freeze-thaw damage, staining, and premature wear. Correcting the pavement grade often provides a long-term solution.
Frequently Asked Questions About Ponding / improper pitch
What is ponding on a sidewalk?
Water collecting on the surface instead of draining away, caused by inadequate or incorrect slope.
Can ponding alone cause a violation?
Yes. In NYC, a flag that does not drain properly and retains water can be cited as a substantial defect even without cracking.
Why is standing water damaging?
It accelerates surface deterioration, drives freeze-thaw damage in winter, promotes algae growth and stains the concrete.
How is improper pitch corrected?
By removing the affected flags and repouring them to the specified slope toward the curb, tying into the surrounding grades.