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National Trail Surfaces Study

SECTION#3

For the following questions, please answer every item pertaining to the trail pre-installation specifications. Leave blank if the response choice is not applicable to you. Some questions require you to fill in the blank with a corresponding answer.

20. Please indicate the trail’s soil composition/type, and the depth at which it can be found (choose all that apply):

Soil composition/ type Depth

0”- 4”

Depth

5”- 8”

Depth

>8”

Depth

“Unknown”

Cemented soil

(particles are held together by a chemical agent, such as calcium carbonate)

       
Cohesive soil

(examples of cohesive soils are: clay, silty clay, sandy clay, clay loam and, in some cases, silty clay loam and sandy clay loam)

       
Dry soil

(does not exhibit visible signs of moisture content)

       
Fissured soil 

(has a tendency to break along definite planes of fracture with little resistance, or a material that exhibits open cracks)

       
Granular soil

(gravel, sand, or silt with little or no clay content)

       
Moist soil

(soil looks and feels damp)

       
Plastic soil

(allows the soil to be deformed or molded without cracking)

       
Saturated soil (voids are filled with water)        
Unknown        

Other (please  specify): 

21. Please indicate the typical slope the particular trail has prior to trail installation:

Up to 5%
Between 5% (1:20) and 8.33% (1:12)
Between 8.33% (1:12) and 10% (1:10)
Between 10% (1:10) and 12.5% (1:8)
Greater than 12.5% (1:8)

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