摘要:
A surface water outlet device for allowing water removal from a sediment pond while controlling sediment removal that includes a float formed of interconnected lengths of pipe sealed against water intrusion and a drain pipe attached to the float and having a plurality of openings to allow water to drain into the drain pipe. A swivel is positioned intermediate the float and the drain pipe and adapted to allow the float to rise and fall with the water level in the sediment pond and to allow the drain pipe to pivot relative to the float as the floats rises and falls with the water level. An annular slide pipe is positioned over the drain pipe and is moveable along the length of the drain pipe to cover a varying length of the slots to correspondingly vary the rate at which water flows into the drain pipe through the slots.
摘要:
An underground water storage system filled without pumps is provided. The underground water storage system comprises a water source at a first elevation and an underground water storage facility at a second elevation, less than the first elevation. The underground water storage facility is in fluid communication with the water source by a piping and valve system. The pressure difference between the water source at the first elevation and the underground water storage facility provides the motive force to fill the underground water storage system.
摘要:
A substantially cylindrical drainage unit for use when buried in soil as part of a wastewater leach field comprises a first plastic bead aggregate mass, optionally with a central perforated pipe, surrounded by a segmented-quilt exterior surface. Quilts are captured around the drainage unit by straps, a circumscribing netting sleeve, or by being themselves in the form of tubular sleeves. Preferred rectangular quilt segments contain a second pebble aggregate that is smaller than the first aggregate. Quilts are fabricated by mating two layers of geotextile and inserting the second aggregate into channels or cavities that are defined by seams that join the layers to each other.
摘要:
A subsurface emitter includes a piston valve both preventing water from draining from the system, and blocking the entry of roots and soil into the emitter body. A nozzle is present at one or both ends of a vertical tube. A piston is held in a normally closed position by a spring in the absence of water pressure, covering ports in the nozzle. When sufficient water pressure in provided, the spring is compressed and the nozzle uncovers the port providing a subsurface spray of water. The spray of water is sufficient to clear mineral deposits which otherwise may accumulate and block the port.
摘要:
An aggregate replacement device may be used to take replace rock aggregate in underground drainage systems. An aggregate replacement device may include a structure having a proximal end, a distal end, and at least one face. The at least one face may have a plurality of first openings. A second opening in the structure may extend from the proximal end to the distal end of the structure continuing uninterrupted through at least one of the at least one faces. The second opening may receive a pipe inserted in a radial direction of the pipe. The aggregate replacement device may also include a pipe retainer. An additional embodiment of the aggregate replacement device may include a stake which may be used to secure the aggregate replacement device in position.
摘要:
A composite material made up of fluid permeable layer and a core having drainage voids between projections thereon. The core has a number of relatively large openings defined therein so that in use the fluid permeable layer may extend through the openings in response to a working load applied thereto.
摘要:
An apparatus, for allowing control of liquid level on a site, comprising a hollow stake body comprising lateral openings for allowing liquid thereinto when the apparatus is positioned into the ground, a stake tip at one end and a hit plate receiver at an opposite end. A method for controlling liquid level on an excavation site comprising positioning the apparatus at one location on the site, positioning a hit plate on the apparatus, repeatedly hitting the hit plate until at least one opening is below ground at a liquid control depth, removing the hit plate and installing a pump for pumping liquid accumulated in the apparatus. A mesh construction, for use with the apparatus, comprising a first punctured cover, a second punctured cover and a mesh assembly, comprising at least one filtration mesh, sandwiched between the first and the second punctured covers for allowing liquid therethrough.
摘要:
A plastic arch-shape cross section corrugated stormwater chamber has a multiplicity of crest corrugations and valley corrugations which run transverse to its length. Sub-corrugations run along part or all of the arch-curve lengths of either crest corrugations or valley corrugations, or along both of them. A sub-corrugations are smaller in dimension than an associated crest corrugation or valley corrugation. Sub-corrugations may taper in width and depth and may taper to nothingness. A compound convex shape end cap, useful for closing off the ends of stormwater chambers, has substantially vertical corrugations with analogous sub-corrugations.
摘要:
A structural cell system is disclosed for supporting hardscape areas in a way that enables tree root growth and accommodates filtering, retention, storage and infiltration of storm water while preventing hardscape damage. The system includes a plurality of structural cells capable of being positioned below a hardscape. The structural cells are designed to have openings that are sized to accept tree roots. The system has one or more permeable barriers around the structural cells with a way for water to flow into the plurality of structural cells flow out of the structural cells.
摘要:
A pipe is disclosed. The pipe may comprise an inner wall, an outer wall coupled to the inner wall and including a plurality of corrugation crests and a plurality of corrugation valleys, and a plurality of slits positioned within the corrugation valleys, wherein the slits may be evenly spaced relative to each other around an entire circumference of the pipe.