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7798747 |
Stormwater capture module
The apparatus is an underground reservoir to capture and slowly release stormwater runoff from impervious surfaces such as roads, rooftops, and parking areas. The structure is assembled from one or...
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7530764 |
Easy clean culvert system
An easy clean culvert system being formed of concrete, wherein the culvert system includes a plurality of culvert sections, each section having a cover that is removably coupled to a base portion...
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7441989 |
Beaver control device for a culvert pipe
A beaver control device for a culvert pipe features a generally conical screen having a base portion and an apex portion connected by a plurality of rods. The base portion has a rim sized to fit...
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7305798 |
Composite overfilled arch system
An overfilled arch bridge system includes a composite arch which has a precast layer and a cast-in-place layer. The system further includes means for reducing bending moments within the overfilled...
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7217064 |
Reinforcement of arch type structure with beveled/skewed ends
A method for controlling deformation of a cut end region of an erected arch-type structure for use in underpass construction and the like where the cut end region has at least one extended leg...
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7080956 |
Open bottom box culvert
This invention relates to a novel design of an open bottom box culvert which can be used to enable roads, highways and other infrastructure to cross streams without infringing on the wetted...
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7052209 |
Corrugated stormwater chamber
An arch shape cross section chamber for receiving and dispersing stormwater when buried beneath the surface of the earth is corrugated and has a cross section geometry which is a continuous curve....
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7052210 |
Inlet collar for highway culverts
A highway culvert inlet collar is disclosed having a plate member and a pipe adapter. The plate member has a front face, a rear face, a peripheral side edge intermediate the front face and the rear...
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6922950 |
Top arch overfilled system
An earth overfilled arched structure includes a shallow arch spanning a clear space. The sides of the clear space are formed by curved or straight walls. Solidified zones of earth material...
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6860238 |
Culvert shelves to assist animal migration
Shelves suspended in culverts allow animals to move easily and safely under a highway. The shelves can be retrofitted to any existing culvert or can be part of a new, manufactured culvert. The...
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6769662 |
Form and method for casting a monolithic precast safety end
A precast safety end for use with culverts on highway, driveway, and road drainage crossings has a base having a depending flange at its outer end and an upright wall at its inner end, and opening...
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6736570 |
Precast safety end and form therefor
A precast safety end for use with culverts on highway, driveway, and road drainage crossings has a base having a depending flange at its outer end and an upright wall at its inner end, and opening...
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6644889 |
Headwall for drain pipe
A sectional headwall (10) for a drain pipe (72) includes a unitary base member (12), a unitary sectional member (14) positioned on top of the base member (12), and a unitary lid member (16)...
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6595721 |
Mitred grate and drain cover
A mitred grate and drain cover comprises a peripheral edge having an upper and lower surface and a substantially elliptical shape which defines a space, and a plurality of cross pieces within the...
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6533498 |
Reinforced composite material
A headwall structure constructed of lightweight reinforced composite and incorporating a rigid polymer concrete core in selected portions, for use with standard culvert or drainage pipes in...
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6447206 |
Beaver control screen for culvert pipe
The beaver control screen has a cone-shaped screen having a base, an apex and a horizontal axis. A first set of spaced-apart rods extends from the base to the apex and are disposed in a first...
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6434892 |
Overfilled, precast skewed arch bridge
An overfilled, pre-cast reinforced concrete arch bridge for supporting one pathway above a second pathway in which the projections of the pathways intersect at an oblique angle. The bridge includes...
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6413015 |
Beaver controlling culvert attachment
A beaver controlling culvert attachment prevents beavers from disturbing the flow of water through a culvert. An upstream unit includes a vertical pipe having an upper grate, which prevents the...
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6394700 |
Highway underdrain plastic apron endwall with anti-floatation wings
A plastic apron endwall is connected to a drain which extends under a highway. The apron endwall is in the form of an upwardly opening trough having a general wedge shape and incorporates lateral...
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6338595 |
Storm water control header for culverts
A storm-water control header for a culvert has a vertical head-wall with a thimble on the downstream side, and an adjustable inlet control device including a weir on the upstream side. The thimble...
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6203245 |
Culvert end guard
A culvert end guard for use in surrounding and protecting an exterior end portion of a culvert and which is assembled from first and second like half shell sections is disclosed. Each half shell is...
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6161342 |
Prefabricated concrete element for building a civil engineering structure having an arched wall
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5971663 |
Culvert collar
A culvert collar for providing a device that will support a culvert pipe and further reduces the installation time and maintenance time when working with culvert pipes. The inventive device...
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5836717 |
Multi-segment spandrel wall for overfilled arch structures
An overfilled arch structure includes a spandrel wall that is formed of a plurality of separate segments, each of which is monolithic. The arch structure includes an arch end element having a curb...
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5720577 |
Box culvert
A box culvert formed from a plurality of corrugated sections. Reinforcing ribs are secured to the outside surface of the culvert. A universal receiving channel is provided for each lower edge of...
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5536113 |
Precast concrete wingwall
A precast concrete soil retaining structure is provided comprising an upright portion, a base portion, and a plurality of retaining caps. Preferably its use will be as a wingwall for use with...
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5425600 |
Drainage block feedthrough for assembly of walls constructed of specialized retaining blocks
A drain module is substituted for a retaining block during the construction of a retaining wall of interlocking retaining blocks to provide a drain. The drain module includes an inlet tube for...
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4723871 |
Inexpensive headwall for culverts
A shell-like retainer structure is provided for forming headwalls at each extremity of a culvert disposed below a driveway. The retainer structure has two parallel spaced apart sidewalls having...
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4713179 |
Removable culvert grate
A removable culvert grate for placement adjacent the inflow end of a culvert. The grate includes a vertical grate having a plurality of slats to prevent the flow of beaver workings or similar...
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4595314 |
Precast concrete culvert section
A culvert section includes vertical parallel spaced concrete side walls integrally connected by an arcuate concrete top wall having a curved inner surface with a radius of curvature at least twice...
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4564313 |
Rectilinear culvert structure
A three-sided, rectilinear bridge or culvert structure comprises a pair of vertical sidewalls set in preformed or cast in place footers or existing supports and an integral, planar, horizontal...
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4537529 |
Earth retaining end element for use with overfilled load support structures
An end element (10) retains earth overfill (E) associated to an overfilled load support structure (L) which includes an end arch element (S). The end element replaces a spandrel wall (R) and...
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4103495 |
Flow control device for an irrigation ditch
A device for controlling the flow of water between an irrigation ditch and an adjacent field. A conduit having a first end opening into the irrigation ditch and a second end opening into the field...
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3779021 |
METHOD OF MAKING A HEADWALL
The expression "headwall" refers to the reinforced concrete structure which supports one end of a large pipe and retains earth fill on one side. Instead of building concrete forms on the site the...
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3777786 |
ENTRANCE STRUCTURE FOR A LIQUID CONDUIT
An entrance structure for a storm sewer pipe is designed so that the storm sewer pipe has full flow therethrough when the height of the water at the inlet of the entrance structure is equal to or...
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3587239 |
CULVERT BEVELLED END CONSTRUCTION WITH HEAVY GRATING
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3472030 |
ANTI-CLOGGING ENTRANCE GUARD FOR CULVERTS
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3334660 |
Hood for conduit
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2958200 |
Culverts
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2854823 |
Irrigation ditch valve
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