Surface Water Control Techniques for Trail Maintenance
27:39
Basic Trail Maintenance
14:02
The Bizarre Paths of Groundwater Around Structures
27:20
Why Don’t Railroads Need Expansion Joints?
27:17
Trails in Wet Areas: Turnpike and Puncheon Construction
27:18
Constructing Trail Switchbacks
7:16
A Day In The Life Of A Trail Builder
12:51
How I Built a French Drain to Improve Drainage on Clay Soil
19:52