krzyabncanuck
BLM HOTSHOT
- Joined
- Apr 12, 2005
- Location
- Nam
98. Did you see some Land Cruisers out there ? That would of been my group.
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Wow my wife is exactly the same way with "wheelin". We are headed to California for a year and I looked up a few mild scenic rides. I am hoping I can get her used to it because she has committed to joining me on the Rubicon Trail. I don't want her to be terrified.ops:I went out today with the wife, and ran into a bulldozer on dickey bell clearing out the turn outs. Didn't make it to daniel, as I had the wife with me, and I was teaching her how to drive, so we did wolf den and slab pile later in the afternoon. We did get a good run through everything but daniel and dutch john. The trails were pretty dry, but a few sections where much rougher than I remember from last year. No stuckage, no breakage, and the wife did great. As much as she was against the whole "wheelin'" thing at first, shes been watching uwharrie youtube videos since we got home
April 26th.
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Sediment traps are typically used for construction sites for temporary disturbances at or near outlets of storm water discharge. These require periodic maintenance and more frequently when servicing highly disturbed areas without source protection. I remind you of your fluvial hydraulic class, rain drops that fall on disturbed soil detach soil particles, as runoff occurs these detached particles are transported from their in-situ positions. The runoff velocity also has a propensity to detach soil particles and transport them to the outlet. (the old illustration of what is more erosive sediment laden flow or clear water?) Our best approach for long term disturbed area stabilization is to provide source protection. The source protection (erosion control) practices and flow control practices are much better suited to long term disturbed areas like roads and trails. If we can prevent the sediment from being detached and transported we do not have to provide treatment to remove the sediment from the flow before discharge. The eroded particle size distribution is critical in the design of the sediment traps and ponds. The efficiency of these devices is typically controlled by the surface area to peak discharge ratio. Therefore, for the particle size distributions in this area would require large surface areas to reach an acceptable efficiency of 80%. Remember the settling velocity in Ft/s is V=2.81d**2 where d is soil particle diameter in mm at a specific gravity of 2.65. This is hard to accomplish in steep slope sections without significant disturbances, tree cutting, etc. Bottom line not a good practice for trails in the forest.
Hence, the flow and erosion control practices in conjunction with "on trail" sediment control. The basis for the Daniel fix is a combination of upstream water bars for flow control above and below the ledges. The use of a specific designed sediment control device on trail below the lower ledge to contain the fill material and rebuild the trail elevation by capturing sediment and directing the flow off the trail to prevent additional erosion. The fix Snappy mentions is a structural rip rap check V from one hillside to the other with a structural core for support. The V controls the flow for discharge over the stone, or through it, allowing the sediment material to be retained by the check preventing the material from being kicked away by tire traffic or runoff. I have provided Snappy a cad drawing of the fix with approximate dimensions and materials list. It may take a few of these structures to raise the elevation of the trail over a period of time but they would be installed as the previous one filled.
We welcome your assistance in the installation and maintenance of the controls.
i saw someone else comment on possibly setting up a sunday workday. I have a set schedule, and I always work on saturdays, but would love to come out for a workday. I pick up trash along the trail when I'm out, but I want to do more than that. Does anyone else have any interest in a sunday workday?
Dry yes.... Wet.... NopeLooks 2wd-able