Managing Degraded Off-Highway Vehicle Trails in Wet, Unstable, and Sensitive Environments
Appendix ASubjective Evaluation of Off-Highway Vehicle Trail Treatment Options for Alaska
Evaluation factors | Polynet/ Pyramat |
Wood matrix |
1 ¼ and 2- inch GeoBlock |
SolGrid | PVC mat | Rubber matting |
Woven corduroy |
Onsite material- puncheon |
Gravel/ geo- textile |
GeoWeb |
---|---|---|---|---|---|---|---|---|---|---|
Ability to stabilize trail degradation | Fair | Good | Very good | Good | Very good | Poor | Excellent | Very good | Good | Good |
Ability to promote trail regeneration | Fair | Good | Very good | Very good | Good | Poor | Poor | Fair | Very poor | Very poor |
Suitablity for vegetation regrowth | Fair | Good | Very good | Very good | Fair | Fair | Poor | Poor | Very poor | Very poor |
General quality of traffic surface: | ||||||||||
For OHV use | Fair | Fair | Good | Good | Excellent | Excellent | Good | Good | Good | Good |
For foot traffic | Poor | Poor | Fair | Fair | Excellent | Excellent | Fair | Good | Good | Good |
For heavy track vehicles | Poor | Good | Fair | Fair | Good | Good | Fair | Very poor | Good | Good |
For horses along trail | Poor | Very poor | Poor | Poor | Good | Good | Poor | Very poor | Good | Good |
For large wildlife crossing | Fair | Very poor | Fair | Fair | Good | Good | Fair | Very poor | Good | Good |
Evaluation factors | Polynet/ Pyramat |
Wood matrix |
1 ¼ and 2- inch GeoBlock |
SolGrid | PVC mat | Rubber matting |
Woven corduroy |
Onsite material- puncheon |
Gravel/ geo- textile |
GeoWeb |
---|---|---|---|---|---|---|---|---|---|---|
Slipperiness of surface when wet | Fair | Good | Good | Good | Good | Good | Fair | Fair | Good | Good |
Ability to provide level surface | Poor | Good | Good | Fair | Fair | Fair | Good | Good | Good | Good |
Ability to conform to terrain | Fair | Poor | Fair | Very good | Excellent | Excellent | Good | Good | Good | Good |
Suitability for installation on slopes | Fair | Good | Fair | Excellent | Excellent | Good | Fair | Fair | Fair-Poor | Poor |
Ability to facilitate trail curves | Poor | Poor | Good | Good | Very good | Good | Very poor | Good | Fair | Poor |
Abiliy to install over center hump | Good | Good | Fair | Good | Good | Good | Fair | Good | Good | Good |
Evaluation factors | Polynet/ Pyramat |
Wood matrix |
1 ¼ and 2- inch GeoBlock |
SolGrid | PVC mat | Rubber matting |
Woven corduroy |
Onsite material- puncheon |
Gravel/ geo- textile |
GeoWeb |
---|---|---|---|---|---|---|---|---|---|---|
Ease of installation | Poor | Very poor | Good | Excellent | Fair | Very good | Poor | Good | Fair | Poor |
Ease of installation over existing vegetation | Poor | Good | Good | Good | Fair | Fair | Good | Good | Fair | Poor |
Ease of transport to installation site | Excellent | Poor | Good | Good | Fair | Fair | Poor | Excellent | Fair-Poor | Fair-Poor |
Weight of material/surface area | Low | Heavy | Low | Low | Low | Low | Heavy | Heavy | Heavy | Heavy |
Susceptibility to displacement | High | Low | Low | Low | Low | Low | Low | Low | Low | Very low |
Natural Appearance | Poor | Fair | Fair | Fair | Fair | Fair | Good | Good | Fair | Fair |
General esthetics of installation | Poor | Fair | Good | Good | Good | Good | Good | Good | Fair | Fair |
Evaluation factors | Polynet/ Pyramat |
Wood matrix |
1 ¼ and 2- inch GeoBlock |
SolGrid | PVC mat | Rubber matting |
Woven corduroy |
Onsite material- puncheon |
Gravel/ geo- textile |
GeoWeb |
---|---|---|---|---|---|---|---|---|---|---|
Visual "contrast" on installation | Moderate | Moderate | Moderate | Moderate | High | High | Moderate | High | High | High |
Visual "contrast" after revegetation | Good | Good | Good | Good | Fair | Fair | High | High | High | High |
Public perception | Poor | Poor | Fair | Fair | Good | Good | Good | Good | Good | Good |
Negative effect on permafrost | None | None | None | None | None | None | None | None | None | None |
Suitability for underwater application | Poor | Poor | Good | Poor | Fair | Poor | Poor | Fair | Fair | Poor |
Longevity of product | Fair | Poor | Good | Good | Good | Good | Fair | Fair | Good | Good |
Strength of material | Poor | Fair | Excellent | Excellent | Excellent | Fair | Good | Good | Fair | Good |
Evaluation factors | Polynet/ Pyramat |
Wood matrix |
1 ¼ and 2- inch GeoBlock |
SolGrid | PVC mat |
Rubber matting |
Woven corduroy |
Onsite material- puncheon |
Gravel/ geo- textile |
GeoWeb |
---|---|---|---|---|---|---|---|---|---|---|
Transfer of lateral load | Poor | Excellent | Very good |
Poor | Fair | Poor | Good | Excellent | Good | Good |
Maintenance requirements | High | High | Low | Low | Low | Medium | Medium | Medium | Medium | Low |
"Environm-ental" cost of material |
Low | Low | Low | Low | Low | Low | High | Low | Low | Low |
Installation labor time | High | High | Low | Very low | High | Low | Medium | Low | High | High |
Cost of material | Low | Low | Medium- High |
Medium | High | Low | Low | Low | Medium- High |
Medium- High |
Suitable for use: L-M-H impacted areas | Light | Heavy | Heavy | Moderate | Mode- rate |
Light | Heavy | Heavy | Heavy | Heavy |
Overall suitability for use |
Poor | Poor | Very |
Good | Good | Poor | Condit- ional |
Site dependent | Good | Condit- ional |