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  • CR4 - Thread: Wet Sloppy Muddy Driveway
    If you have backing up stormwater runoff problems, probably the best way to drain the area is to install a 12 - inch Sch 80 PVC pipe section crossing underneath your driveway to a lower area that is acceptable to receive the water … … 5 feet of soil cover backfill (gravel) above the crown (top) of the culvert pipe so as …
  • Runoff production on forest roads in a steep, mountain catchment
    [16] All 12 instrumented culverts were ditch-relief cul- verts constructed of 18- inch (46 cm) corrugated metal pipe . … Innovations, Las Cruces, NM) installed in stand pipes constructed of 6 cm diameter polyvinyl chloride ( PVC ) pipe.
  • Hydraulic Loss Coefficients for Culverts
    Entrance loss testing was conducted using 12 -in. [inside diameter (I.D.) = 11.75 in.] and 24-in. diameter (I.D. = 23.45 in.) traditional circular culverts with square-edged inlet with headwall end treatments as shown in Figure 2-5. Commercially available circular PVC pipe with the dimensions shown in Table 2-1 were used for the entrance loss coefficient size-scale testing. … depths had an inside diameter or hori- zontal dimension (Dh) of approximately 18 inches with the vertical …