CPP SMOOTH CORE /
For pond and wetland water level control
Flashboard Riser water level control structures, with
their Increase-Decrease style of incremental movable boards, have been
used for centuries to control water levels in ponds, polders and marshes.
The movable board or log system has been installed in log headwall channel
rails, concrete channel rails, fabricated metal pipes and now fabricated
CPP Smooth Core/n-10 pipes. CPP Smooth Core/n-10 Flashboard Risers are
ideal for adjusting the water level of small ponds or water containment
basins. They are fabricated from HDPE (High Density Polyethylene) plastic
which will not rust. Durable HDPE plastic is also more resistant to sediment
abrasion then other raw materials.
CPP Smooth Core/n-10 durable plastic Flashboard
Risers are lightweight, and easy to transport to isolated pond locations.
Because water soaked, movable muck soils will be surrounding any flashboard
riser system, the riser must be anchored in an unmovable concrete pour
to prevent headwall washout. A minimum twelve-inch concrete foundation
is recommended under the invert of the outlet stub, and around the half
circle headwall-footing base. The plastic headwall riser’s corrugated
exterior walls will provide a positive interlock for the concrete pour.
Additional concrete maybe needed at the headwall wings depending on the
quality of native site materials used to backfill around the plastic
flashboard riser structure. Concrete should also be poured at the stub-out
connection joint to secure a watertight joint for the outlet drainpipe.
A plywood horseshoe saddle or a partial backfill over the outlet pipe
beyond the coupling stub joint will provide a concrete form. A CPP MASTIC
based watertight coupler should be applied to the joint prior to the
pour of concrete.
CONCRETE FOUNDATION FLANGE
OUTLET STUB CONNECTIONS
| A Twelve-Inch extension is provided below the bottom of the outlet
stub pipe for securing this structure into a concrete foundation
|| A view of the exit side stub-out for receiving CPP Smooth Core/n-10
high volume flow outlet pipe. Connections here should be made with
CPP MASTIC watertight couplers, and concrete encased to prevent muck
Crumpler Plastic Pipe, Inc.
Post Office Box 2068 / Highway 24 West
Roseboro, NC 28382
TEL: 1-800-334-5071 · 910-525-4046
FAX: 1-800-CPP-PIPE ·
General Information, Sales, & Support: firstname.lastname@example.org
Engineered Sales: email@example.com