Abstract: Example aspects of a slide gate, a slide gate assembly, and a method of using a slide gate assembly are disclosed. The slide gate can comprise a gate body defining a first face, a second face, and a sliding groove; and a plurality of reinforcement ribs extending from the second face, the reinforcement ribs comprising: an exterior rib frame; and an interior rib grid comprising an annular reinforcement rib, wherein the interior rib grid is oriented within a boundary of the exterior rib frame.

Abstract: Connection devices for connecting a drainage gutter to a further functional element (10), for example to an inlet box, are known, which comprise an adapter plate (20) to which the drainage gutter can be connected. In order to ensure simple assembly on the building site in combination with a high degree of tightness, it is proposed to provide a cast-in part (40) which can be tightly cast into a wall of the functional element (10) and comprises fastening devices by means of which the adapter plate (20) can be fixedly connected to the cast-in part (40) in such a way that a flow space (2) of the drainage gutter can be tightly connected to an interior of the functional part (10) via a transfer space.

Abstract: The present invention relates to a retractable floodwall system comprising a floodwall panel installed in a housing unit. The floodwall panel is connected with a counter-balance weight. The floodwall panel is capable of being raised from the housing unit and being lowered into the housing unit. The present invention also relates to a method of flood prevention comprising providing a floodwall panel in a housing unit; connecting the floodwall panel with a counter-balance weight; raising the floodwall panel from the housing unit for flood prevention; and lowering the floodwall panel into the housing unit.

Abstract: A self-activating flood barrier includes a chamber (1) having first and second side walls (3, 5), a dam member (9) adapted to self-deploy in the event of a flood to inhibit the passage of water to a region to be protected, and a low-friction device (77, 79) positioned between the dam member and at least one of the first and second side walls of the chamber when the dam member is deployed. The low-friction device prevents jamming between the dam member and the at least one side wall.

Abstract: A door body includes a door main body, an upper guided portion provided to an upper portion of the door main body, and a lower guided portion provided to a lower portion of the door main body. A guide member includes an upper guide portion, a lower guide portion, and a restricting portion. The upper guide portion supports the upper guided portion from below while restricting movement of the upper guided portion along the fore and aft direction. The lower guide portion supports the lower guided portion from below while restricting movement of the lower guided portion along the fore and aft direction. The upper guided portion is moved upwardly away from the upper guide portion in the expanded support state. The restricting portion restricts movement of the door main body in the first direction in the expanded support state, and restricts movement of the door main body in the second direction in the expanded support state.

Abstract: A hydrostatic fluid containment system, or flood barrier, that is positioned underground in its open state consisting of a buoyant wall which floats up and above ground level when submerged in a fluid, creating a seal from both buoyant vertical and hydrostatic horizontal forces on the containment wall imposed by the contained fluid. The system will not open prematurely and restrict access of vehicles or pedestrians until containment is necessary. The system comprises a pivot seal which seals the barrier on the upstream side, as well as another sealing element that is positioned between the pivot seal and the buoyant wall. The pivot helps to tilt the barrier towards the upstream direction.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable by articulating wheels in tracks, over an entry port to a storm water structure. Locking the door can be accomplished by rotating bolts that are attached to cams. Rotating the bolts causes the cams to press the door against the tracks. Sealing strips can be compressed between door edges and the track to prevent water from passing around the door. A vacuum truck can remove water and debris from the vault/structure. Other versions allow doors to move downward to allow water to overflow the door. The door can slide upward so water can flow underneath. A door in door version has a secondary door slide up and down in tracks in a main door.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable by articulating wheels in tracks, over an entry port to a storm water structure. Locking the door can be accomplished by rotating bolts that are attached to cams. Rotating the bolts causes the cams to press the door against the tracks. Sealing strips can be compressed between door edges and the track to prevent water from passing around the door. A vacuum truck can remove water and debris from the vault/structure. Other versions allow doors to move downward to allow water to overflow the door. The door can slide upward so water can flow underneath. A door in door version has a secondary door slide up and down in tracks in a main door.

Abstract: Systems, devices, apparatus, and methods of moving a door, over a water conveyances. Locking the door can be by rotating bolt heads attached to cams. Rotating heads causes cams to press the door against tracks. A strip can be compressed between the door and track to prevent flow. Slidable doors can move to allow water overflow. The door can slide so water can flow underneath. A secondary door can slide within an opening in a door. A half panel can have an upper opening located in a wall, to close or allow water flow. A channel can have grooves in sides of an opening, where a door can slide to different heights to close or allow flow.

Abstract: The invention provides an undershot sluice gate (17) to control flow of liquid through an open channel (10). The gate (17) includes a gate leaf (18) adapted to be raised and lowered by a control means (22) to allow flow of liquid along open channel (10). Gate leaf (18) has at least a pair of opposing liquid level sensors (44, 46) on, or in, gate leaf (18) to provide measurement of liquid level upstream and downstream of gate leaf (18). The sensors (44, 46) are located at a predetermined distance from the lowermost edge of gate leaf (18) to allow said measurements without disturbance from the fluid flow profile resulting from movement of liquid beneath the lowermost edge of gate leaf (18).

Abstract: A flood flaps vent for sealing a building crawlspace includes: (a) a vent box portion including open opposite front and rear ends on either end of a vent passageway, the vent box including a top box portion with at least one flap slot adjacent a rear end portion of the vent box, and an opposite bottom box portion; (b) at least one flexible flood flap extending across the open rear end portion, with its upper edge seated in the flap slot, other side flap edges of the flood flap being unattached; and (c) a grate portion over the open front end portion of the vent box; the flood flap occluding the rear end portion of the vent box when it is in an at rest, home position. This simplified abstract is not intended to limit, and should not be interpreted as limiting, the scope of the claims.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable by articulating wheels in tracks, over an entry port to a storm water structure. Locking the door can be accomplished by rotating bolt heads that are attached to cams. Rotating the heads causes cams to press the door against the tracks. Sealing strips can be compressed between door edges and the track to prevent water from passing around the door. A vacuum truck can remove water and debris from the vault/structure. Other versions allow doors to move downward to allow water to overflow the door. The door can slide upward so water can flow underneath. A door in door version has a secondary door slide up and down in tracks in a main door.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable through tracks, over an entry port to a storm water type vault or storm water structure. Locking the door in place can be accomplished by rotating upwardly protruding bolt type heads that are fixably attached to cams. Rotating the bolt type heads causes the cams to press the door against one side of the tracks. An elongated sealing strip can be compressed between the door edges and the one side of the track and seal and prevent water from passing about the sides of the door. Alternatively, removable wedges can be used to compress door edges in place. Furthermore, a hinged pressure relief door can be attached over a small opening in the slidable door. Opening the small pressure relief door by an elongated tool allows for water on both sides of the sliding door to equalize.

Abstract: A method and apparatus for managing water flow are provided. A frame positions two gate blades, wherein each blade movable along a single axis, preferably a vertical axis. A lower blade is typically positioned below an upper blade. The upper blade may move independently of the lower blade and may be alternately coupled and decoupled to the lower blade. A coupling module enables the selectable and alternating coupling and decoupling of the upper blade and the lower blade. The coupling module may the spring-loaded rod having a first position and a second position, wherein the spring-loaded rod couples the upper blade and the lower blade in the first position and the spring-loaded catch decouples the upper blade and the lower blade in the second position.

Abstract: The invention provides an undershot sluice gate (17) to control flow of liquid through an open channel (10). The gate (17) includes a gate leaf (18) adapted to be raised and lowered by a control means (22) to allow flow of liquid along open channel (10). Gate leaf (18) has at least a pair of opposing liquid level sensors (44, 46) on, or in, gate leaf (18) to provide measurement of liquid level upstream and downstream of gate leaf (18). The sensors (44, 46) are located at a predetermined distance from the lowermost edge of gate leaf (18) to allow said measurements without disturbance from the fluid flow profile resulting from movement of liquid beneath the lowermost edge of gate leaf (18).

Abstract: A self-adjusting barrier incorporates a series of float units restrained between a primary wall, such as a bulkhead, and a secondary wall, such as sheetpile. The secondary wall may be braced to the primary wall. The float units slidably interconnect along adjacent edges to self-adjust along a perimeter, such as a marina or waterfront lot, based on the height of water within the chamber (stilling basin) provided between the two walls. Mechanisms for deterring vandalism and providing increased environmental integrity are also provided for select embodiments. Methods of employing the barrier are also disclosed.

Abstract: The flood vent has an elongated box-shaped frame having a top end, a bottom end including a floor, and opposing sidewalls that define a fluid passageway. The frame has an open front and a track formed in the rear of the frame. A door is slidably mounted in the track so that a normally closed position blocks the fluid passageway. The door is sufficiently buoyant to permit floodwater to float the door in the track and, thus, to automatically vent excess water through the fluid passageway. Installed in a crawl space, basement, or similar structure, the venting action of the flood vent limits hydrostatic pressure buildup against the walls of the structure when floodwaters rise, thus preventing structural damage from occurring.

Abstract: A bypass channel (C) for fish extends along line one side of a river, for the full length of a section of the river in which reservoirs (22, 24, 26, 28) have been created by dams (14, 16, 18, 20). The channel (C) follows the grade of the natural river. It includes an inner wall (34) that varies in height so that it is always higher than the water level in any of the reservoirs. It also includes an outer wall (36) and a bottom wall (38) which are formed on the natural terrain that borders the river and reservoirs. In at least its taller regions, the inner wall (38) may be braced by a diagonal member or a system of member (40). Water flow into the channel (C) maybe regulated by horizontal and/or vertical gates (50, 52) or some other structure for changing the cross sectional area of the channel (C).

Abstract: A manual light water gate includes a water gate and an opening and closing device as main components combined together. A transmitting rod having its lower end connected to the water gate and its upper portion inserted in the opening and closing device is controlled by stop members of the opening and closing device so as to move the water gate to open and close. Such a design is easy in handling and capable to be provided across a ditch, an irrigation canal, etc. available for adjusting its water level.

Abstract: A self-regulating tilting weir comprises a tiltable weir gate over which the water flows, the weir gate being hinged at its lower edge (3) to the base of a support frame (1) and counterbalanced by floats (4) located upstream of the weir gate so that the level of water is raised in response to a fall in the water level upstream of the weir gate and is lowered in response to an increase in the water level upstream of the weir gate, the weir gate being connected to the floats (4) by chains or cables (5) which pass over pulley wheels (6), and devices (7, 8) being provided for effecting vertical movement of the pulley wheels (6) relative to the support frame (1). A self-regulating fishway (FIGS. 9 to 11) is provided alongside the weir.

Abstract: A flood gate structure incorporating a safety device thereon to prevent harm through crushing or trapping of animals, such as manatees by the flood gate when passing into its closed position. An object sensor, along with an override sensor assembly, are provided and coupled to the flood gate and are positioned to open or close a circuit associated with the object and override sensor assemblies thereby regulating current flow to a drive motor which is drivingly attached to the flood gate and, upon activation thereof, serves to move the flood gate between its open and closed position.

Abstract: The invention relates to a movable dam for a water-course. This dam comprises a chamber which, for example, is formed in a dike or alike and wherein a buoyant body is housed supporting a vertical retaining wall. At its top the chamber communicates with the surroundings through a slot receiving the vertical retaining wall, whereas further a filling channel connects to said chamber and extends towards the watercourse. It is possible that a discharge channel is connected to the lower part of the chamber. Further sealing means may be provided.

Abstract: A water control and diversion headgate for use in irrigation systems, simplifying the headgate construction, easing its operation and improving its overall efficiency. This headgate includes a corrugated pipe, sometimes provided with an internal liner and having a beveled slot which extends slightly less than halfway through its diameter. A solid, flat elongated water-blocking gate, usually somewhat flexible, is positioned within the slot for vertical movement and for fully or partially blocking water flow through the pipe. The gate has a tapered lower edge and is adapted to make a sealing line contact with an adjacent pipe corrugation for sealing efficiency.

Abstract: A water tight seal for water slide gates, and more particularly to a seal which is made from an elastomer such as reinforced plastic. Said seal comprises a first portion and a second portion whereon slides the gate and a resilient means so as to clasp the gate between said first and said second portions of said seal.

Abstract: The barrier proposed by the invention consists of gate elements or components which move on inclined planes, characterized by the fact that in the rest position on the edge of the waterway, preferably on the shore, the gate elements or components can be inserted inside one another in telescope fashion. With suitable lengths of the foundations forming the inclined planes, the gate elements which can be moved in tracks independently of one another can be removed completely from the water and pushed together above the average high water level.The cross section of the gate elements has a triangular shape, whereby the ocean-side supports the dam wall and the inland side primarily absorbs the bracing forces.

Abstract: A water control structure for a flow channel comprises a structure-mounted roller assembly having a pair of elongate, generally U-shaped frame members including an upstream leg, a downstream leg and a connecting web therebetween, the frame members adapted to be positioned on opposite sides of the flow channel with the openings in the U-shape facing each other for slidably receiving and supporting in vertically stacked relationship the ends of from one to a plurality of plain flashboards therewithin for providing a height-adjustable gate of flashboards for regulating water levels. A plurality of longitudinally spaced-apart rollers are mounted on the downstream leg for facilitating longitudinal sliding movement of the flashboards in the U-shaped members, each of the rollers comprising a split wheel roller assembly including first and second spaced apart, major diameter roller surfaces.

Abstract: A vertically reciprocable gate assembly which includes a frame surrounding a port and a gate having a gate member connected by links to an actuating member which is slidably connected to the frame with the gate member between it and the frame. Unless the gate is closed, the gate member is held against the actuating member and out of sealing contact with the frame. When the gate is lowered, it engages a stop which establishes a predetermined position of the gate member relative to the port, further downward movement of the actuating member causes the links to thrust the gate member into its operative position.

Abstract: This invention is directed toward improved liquid sealing assemblies. The sealing assemblies are particularly useful in water control gates and in one embodiment have an elastomeric seal strip with a U-shaped cross-section defined by a web and a pair of arms extending transversely from the web. The seal strip is adapted to be fastened to a sealing location by mounting means located between the arms of the seal strip. The web of the seal strip is sandwiched between the mounting means and the sealing location, with the arms of the seal strip projecting just past the mounting means to effect sealing with their free ends.In another embodiment, the sealing assemblies have first and second elastomeric seal strips adapted to be mounted on two relatively movable members.

Abstract: An apparatus for preventing intrusion of sediments into quiet water berthing areas which is particularly adapted for use in berthing areas of the type having spaced apart fixed structures extending downwardly to the floor of the water body and defining an opening to the berthing area of a size sufficient to permit the ingress and egress of transiting vessels. The apparatus includes a spar curtain barrier made up of a plurality of flexible sections each of which comprises a ballasted spar buoy to which a length of flexible curtain fabric is attached. The sections are secured together to form an integrated structure adapted, in its closed position, to extend between the spaced apart fixed structures defining the berthing area. The spar curtain depends downwardly to a level proximate the floor of the berthing area and can be opened by a single workman in a short period of time to permit the entry or exit of the transiting vessels.

Abstract: A flow measuring flume is described which is compact, cost-effective, self-cleaning and of adjustable capacity. This flume is applicable in the chemical water treatment of acid discharge streams from coal mining operations. It incorporates the self-cleaning advantage of the Parshall venturi flume but without the fixed throat size limitation of a venturi. It further incorporates the adjustable capacity of the notched weir type flow meter without the debris blocking characteristic of the dam like weir. The flume comprises a rectangular open channel with a triangular base and with a discharge opening in one of its two side walls, adjacent to the common corner. A sliding door is used to adjust the discharge opening width, but does not alter the geometric similarity or flow discharge characteristics per unit width of outlet. In addition this flume has one side wall higher than the other for the purpose of protecting equipment from flood damage.

Abstract: The throttle shaft for the controlled discharge of dammed-up water, especially for the controlled flow of sewage and waste water to sewage-processing units, comprises a housing formed with an inlet and an outlet for a float-controlled throttle flap at the inlet regulating the flow of water into the housing in response to the water level therein. According to the disclosure, the housing is provided with a throttle channel for the water which communicates with the outlet and is provided with an adjustable shutter shiftable between a fully closed and a fully open position to vary the flow cross section of this channel or passage.