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How do the asphalt layers for the trail compare with layers in road construction projects?

April 26, 2017Asphalt compare Construction layers Projects road trail

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How do the asphalt layers for the trail compare with layers in road construction projects?

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For full depth road construction projects (e.g., new roads), three layers of asphalt are commonly used: base course, binder course, and top course. The stones in the base course are larger than those in the binder course, and can exceed 2 inches in diameter. Since the trail needs to support only light loads, it has only two layers: a binder course and a top course. The layers used for the trail may be thinner than those used for a road construction project. For example, the binder course is 1.5 inches thick for Phase 1. For a road construction project, the binder course is often 3 inches thick.