Secondary paths are access points to the primary trail.
The cross sections below were developed to serve primarily foot traffic and light-duty maintenance needs. These cross sections should be considered minimum standards, and additional thickness of materials or other special considerations may be required due to specific site conditions. The following details are for reference only, and final detail design should be based on the site, specific engineering needs and the input of a geotechnical consultant. Proof-rolling should be performed in all areas to be paved to verify adequate sub-base. Sub-base should be remediated with rock. Geo-grid should be placed over rock course before pavement base is installed.
CONCRETE – PREFERRED MATERIAL
Concrete is the most common option for secondary paths. It is a long lasting material and typical within parks that may interface with the greenway corridor.
PROS:
- Longer lasting option.
- Recognizable as sidewalk.
CONS:
- Cost.
- Impervious.
NOTES:
- 4” minimum depth of concrete.
- Include 4” compacted aggregate base course below concrete path surface.
CHAT – ALTERNATIVE MATERIAL
Limestone chat is a cost effective alternative to concrete in areas that are relatively flat. Chat compacts to a hard trail surface that can also give, somewhat, and is a great option for trails that will be frequently used by runners. It does require more regular maintenance than concrete, particularly to address low spots that may form over time.
PROS:
- More cost effective than concrete.
- Lower impact than concrete.
- Desirable for runners / walkers.
CONS:
- Requires regular re-application of material.
- Potential of material washing out during storm events.
- Cannot be used on slopes greater than 5%.
NOTES:
- Only to be used where standing water or saturated soils are not a concern.
- Aluminum paving edge restraint is optional where a cleaner, more contained edge is required or desired.