CATCH BASINS CRACKING?

WE CAN FIND OUT WHY!​​​​​​​ 

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CATCH BASIN REPAIRS


LOOK FAMILIAR?


The all too familiar cracking of the asphalt around catch basins can be a constant nuisance.  Addressing the source of the cracking instead of just repairing the asphalt pavement around the catch basin will help to maintain a solid structure for years ahead.


Catch basins are a very important element in parking lots and are easy to overlook.  Catch basins help rid the parking lot of water during a rainfall and snow melt.  Getting rid of water as fast as possible is the object of the game. This quick drainage process is imperative in preventing major damage to a parking lot and avoilding serious liability.


Water cannot drain effectively if it encounters impediments such as the side lip of a basin grate.  Drainage can be impeded by sunken areas around catch basins, clogged catch basins or improperly graded asphalt. 

WHY DO CATCH BASINS FAIL?

Catch basins fail for many reasons and most have one common denominator, water.  Water is very sneaky, it likes to percolate through anything possible.  Here is a few reasons why your catch basins may be failing.

1)  PIPE FAILURE

Inlet/outlet pipes inside the catch basin have failed and are allowing water to exit the basin into the soil around the catch basin, consequently softening and eroding it.

2) SEEPAGE 

The water is seeping between the grate and the asphalt causing both erosion and heaving once this water freezes. Consquently causing cracking. 

3) INCORRECT INSTALLATION

Improper installation of the catch basin.  This may mean that the sub-base which the basin itself rests on is inadequatley compacted. Thus allowing the weight of the basin to settle down into the sub-base.

4) OLD STYLE

Older catch basins used brick and morter.  Masonry will always succumb to the powerful effects of weather. Masonry materials such as brick, block and concrete are “breathable” materials.  Salt water enters the voids and cracks of the masonry such as deteriorated mortar joints or cracked and broken brick.  Not only are the masonry materials  “breathable”, but the brick, mortar or concrete is now loaded with salt and water.  When the water evaporates, the salt is still left behind. Being a hygroscopic material (water absorbant), the residual salt now allows these surfaces to take on more water than before, intensifying the already brutal effects of freeze/thaw cycles.


Once the blocks start braking apart it causes the catch basin to collapse inward. This then causes the sub-base to wash out and fall into the basin essentially taking the asphalt's support with it. 


Sometimes these old catch basins need to be completly repaced with new precast concrete catch basins.  We then use reinforced modulock rings to support the grate, which are designed to handle the stress of a heavy loads and prevent cracking.  

CATCH BASIN IN ACTION

Catch basins can encounter enormous amounts of water during rain storms.  When they are constructed properly and kept clean inside they will function flawlessly, prevent parking lots from flooding and remain intact for many years.

THE FINAL PRODUCT


Sometimes catch basins need to be cut out well beyond the areas that are damaged. This helps to provide room to re-grade the sub base and prepare it for proper slope and drainage.