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4 Sub-Grade Issues To Discuss With Your Contractor Before Paving Takes Place

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If you are in the process of hiring a contractor to lay down a new parking lot for your business, it is important that you work with your contractor to identify any issues with your sub-grade before the parking lot is installed. 

Identify The Type Of Soil

The term sub-grade refers to the soil that is found where you want to place your parking lot. It is vitally important that you identify what type of soil the ground is comprised of where you want to have your new parking lot installed. This information will help you determine if you need to take any additional steps to ensure the longevity of your new parking lot.

For example, if the area is comprised of plastic clay, the ground will easily shift when cement and vehicles are placed on top of it. If the soil in your area is always really wet and doesn't drain properly, you may need to have a drain tile installed to ensure that the ground doesn't become too wet. Geo-tech fabric is another option that can strengthen the sub-grade if you have soft soil. 

Figure Out Where All Utilities Are Located

Additionally, you will need to contact all you local utilities, such as the water, gas, sewer, and electric companies to figure out if there are any utility trenches in the area where you want to place your new parking lot. If there are utility trenches, you will need to backfill these trenches with gravel instead of with soil. Gravel will support the trenches and will not settle over time; soil will settle over time and disturb your parking lot. 

Remove Organic Material

Regardless of the type of soil that your sub-grade is comprised of, your contractor will need to do some prep work to your sub-grade. They will need to remove all plants and roots in the area where your parking lot will be installed. It is important to remove all organic material because organic material will degrade over time; when it degrades, the soil will shift, and your parking lot on top of it will shift as well, resulting in damage to your parking lot. This type of damage can easily be avoided by removing organic material in the first place. 

Compact Soil

Finally, the soil that comprises your sub-grade should be compacted before the base is put on top of it. Compacting the soil will make it stronger and will help reduce the chance that the soil will shift and damage your parking lot over the long-term.

For more information, contact Lakeridge Paving Company or a similar organization.


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