Landscaping License Practice Test

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What is the minimum aggregate base thickness for driveways when installing concrete pavers?

4 in
5 in
6 in
7 in

The correct answer is: 6 in

The minimum aggregate base thickness for installing concrete pavers on driveways is typically recommended to be at least 6 inches. This thickness ensures proper structural support and stability for the concrete pavers, which need to withstand both the weight of vehicles and the varying weather conditions. An adequate base serves multiple purposes: it helps with drainage, reduces the potential for shifting and settling over time, and contributes to the longevity of the pavement system. Thinner bases may not provide sufficient support, potentially leading to issues such as cracking or uneven surfaces, especially under load. Therefore, adhering to the standard of a minimum of 6 inches helps ensure that the installation meets both durability and performance requirements for driveways.