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7. lvrm ch7 ukraine surf subdrainage-1 hr-
Sep. 18, 2015•0 likes•430 views
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subdrainage
Radmila UstychFollow
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7. lvrm ch7 ukraine surf subdrainage-1 hr-
- SURFACE DRAINAGESURFACE DRAINAGE Natural Channel CrossingsNatural Channel Crossings CulvertsCulverts Low-Water CrossingsLow-Water Crossings BridgesBridges Surface DrainageSurface Drainage Sub-Surface DrainageSub-Surface Drainage Meadow CrossingsMeadow Crossings
- Photo: USDA Forest Service
- Photo: Gordon Keller
- Outlets/Inlets
- USFS
- Leadouts- Leadoff Ditch
- USFS
- Ditches
- Photo: Gordon R Keller
- USFS
- Switchbacks
- Steep Grades
- Over-Side Drains
- Meadow Crossings
- Springs/Wet Areas
- Corduroy Road
- Underdrains
- Filter Blanket
- DRAINAGE DRAINAGE DRAINAGE
- Pay Attention to Drainage Detail
Editor's Notes
- Here we can see muddy water being collected in the road, concentrated, and flowing down wheel ruts in the road.
- The crown in the center of the road devides the runoff and shortens the distance water needs to travel on the road surface. Crown roads are suitable for slippery conditions. Require the largest amount of disturbance (footprint) and are the most expensive to construct and maintain.
- Leadouts are most common draining ditches along either insloped or crowned roads on low-sloping ground. They are commonly constructed with a dozer turning the ditch out into the surrounding slopes.
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