Abstract: An under drainage method for building using perforated drain pipes is disclosed. Groundwater entering from underground of a building is collected into collecting drain pipes via horizontal drain pipes, which are wrapped with filtering means such as nonwoven fabric, without using a collecting well. The collected groundwater is maintained in a prescribed water level within vertical drain pipes, which are wrapped with the filtering means, or drained to the surface of the earth. The drained groundwater is utilized as domestic water. Therefore, the method can effectively manage the groundwater, is economical as not requiring the installation of the collecting well, and allows to effectively use perforated drain pipes, which are inexpensive.

Abstract: A drain seal for rapidly sealing the apertures in a drain grate, the drain seal composed of a mat of polymeric material and having a pair of opposing sealing surfaces and internally disposed reinforcement members to increase structural integrity.

Abstract: A flow distribution box for a wastewater treatment system includes an inlet into a back wall and outlets in the opposed outer side walls and front wall, the distribution box including a plurality of flow dividers therein to compartmentalize effluent within the flow distribution box. A flow director is disposed in the inlet into the flow distribution box for directing the flow into selected compartments within the distribution box. Each of the outlets in the box is in flow communication with a conduit leading into a selected area of a drain field.

Abstract: An apparatus and method for the beneficial utilization or handling of run-off water. The apparatus includes a permeable underground water reservoir in combination with a siphon. Run-off water can be directed to the reservoir where its permeability allows infiltration of the water into an infiltration gallery which includes the soil around the system. Upon reaching a critical head, a siphon operates the siphon off water until the siphon is broken and infiltration resumes. The system can cycle between infiltration and siphon outflow unless an equilibrium between inflow and outflow is set up which can continue indefinitely. Alternative to a siphon, a valve could be used which allows outflow upon water in the reservoir reaching a critical head. The system could be used to clean or treat water, especially initial run-off from storms.

Abstract: A method for increasing the bearing capacity of foundation soils for buildings consisting in providing a plurality of holes (1) spaced from each other deep in the soil, and in injecting into the soil, through the holes (1), a substance (3) which expands as a consequence of a chemical reaction, with a potential increase in volume of at least five times the volume of the substance before expansion; the expansion of the substance (3) injected into the soil producing compaction of the contiguous soil.

Abstract: A plastic catch basin with grate on top, box shape design to drain a low area by gravity to a final drain area through plastic pipes, the catch basin to be assembled on site according to need by constructing with side plates with a choice of holes according to need and the catch basin is designed to be more solidly constructed to hold its shape over time and use, constructed to be modified by adding additional catch basins with the plastic pipes as need arises.

Abstract: 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 entrance of beavers and debris, while allowing the entrance of water during periods of high water levels. A horizontal pipe has an upstream end attached to an upper portion of the vertical pipe and a downstream end attached to an upstream end of the culvert by an attachment plate. A basket insert is carried within the vertical pipe, and is movable between an in-use position, wherein a grate prevents entrance to the bottom of the vertical pipe, and a clean-out position wherein the grill is elevated to allow disposal of accumulated debris through the horizontal pipe and culvert. A downstream grate prevents beavers from entering the downstream end of the culvert, and from filling the culvert with debris.

Abstract: 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 entrance of beavers and debris, while allowing the entrance of water during periods of high water levels. A horizontal pipe has an upstream end attached to an upper portion of the vertical pipe and a downstream end attached to an upstream end of the culvert by an attachment plate. A basket insert is carried within the vertical pipe, and is movable between an in-use position, wherein a grate prevents entrance to the bottom of the vertical pipe, and a clean-out position wherein the grill is elevated to allow disposal of accumulated debris through the horizontal pipe and culvert. A downstream grate prevents beavers from entering the downstream end of the culvert, and from filling the culvert with debris.

Abstract: A storm sewer overflow control device for controlling runoff surge flows from a generally vertically oriented storm drain into a generally horizontally oriented storm sewer pipe includes an engagement portion configured for insertion into the storm sewer pipe, a flow control portion attachable to the engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the storm sewer through the engagement portion. The engagement portion is radially expandable to tightly and frictionally engage an interior surface of the storm sewer pipe, and preferably is configured to expand radially as it is shortened axially.

Abstract: A catch basin filtration system is disclosed. A filter body is dimensioned to fit within an drain inlet forming a trough obstructing at least a portion of the inlet. The filter body is supported by a filter body support dimensioned to cooperatively engage with the interior walls of the inlet and with the filter body to substantially maintain said filter body in a pre-selected shape and position within the inlet. One or more connectors removably connect the filter body to the filter body support.

Abstract: A catch basin filtration system is disclosed. A filter body is dimensioned to fit within a drain inlet forming a trough or reservoir obstructing at least a portion of the inlet. The filter body is supported by a filter body support dimensioned to cooperatively engage with the interior walls of the inlet and with the filter body to substantially maintain said filter body in a pre-selected shape and position within the inlet. One or more connectors removably connect the filter body to the filter body support.

Abstract: 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 is positioned within the culvert, and passes water from the weir to the culvert. A low flow section at the inlet control device allows water to pass from the bottom of the device at a low controlled rate to the culvert. A cover on the top of the control device excludes floating matter from the culvert.

Abstract: A manhole for a storm sewage system comprising a structure having at least two outwardly extending substantially vertical flat panels projecting outwardly from the exterior surface a predetermined distance on opposite sides of the base portion of the manhole.

Abstract: A self-cleaning intake screen assembly for preventing debris, fish, and other wildlife from being transferred from a waterway such as a lake or river, which includes a conical support structure, a screen and a screen sweeping assembly. The conical support structure has a circular base, a cap plate, and a plurality of support studs extending therebetween. The screen extends between the base and the cap plate and is affixed to the support studs. The screen sweeping assembly is rotatably mounted to the cap plate for sweeping debris off of the screen. A flow restrictor is disposed inside the conical support structure for restricting water flow through a portion of the screen in order to reduce differences in water flow rates through different portions of the screen.

Abstract: A storm sewer overflow control device for controlling runoff surge flows from a generally vertically oriented storm drain into a generally horizontally oriented storm sewer pipe includes an engagement portion configured for insertion into the storm sewer pipe, a flow control portion attachable to the engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the storm sewer through the engagement portion. The engagement portion is radially expandable to sealingly engage an interior surface of the storm sewer pipe, and preferably is configured to expand radially as it is shortened axially.

Abstract: A distribution device is suitable for apportioning effluent discharged by a settling tank among first and second outlets. A receptacle includes an interior chamber, an inlet, and first and second outlets. A dam partially blocks the second outlet. Effluent flows solely through the first outlet until the surface level of the effluent rises to a level sufficient to spill over the dam to begin flow to the second outlet. The receptacle may be a plastic pipe tee. An underground distribution system may use several such devices to initially direct flow to areas of a leaching field having a relatively high ground surface elevation.

Abstract: A precast prerotation basin system for use in a wet well for removing water or fluid therefrom is disclosed which comprises a prefabricated, three-dimensional body having a prerotation basin and fluid entrance channel. The precast prerotation basin presents an improvement over prior methods of forming prerotation basins downhole in a wet well because the basin system of the present invention is prefabricated, easily transportable and can be placed in a wet well without the need for providing a cement casing or floor beforehand. The precast prerotation basin of the present invention is pre-structured for accurate alignment of a centrifugal pump therein and eliminates the cost and inaccuracies of forming prerotation basins from molding cement downhole.

Abstract: A wastewater treatment system provides a leaching field that may be of conventional configuration or may include certain unique features, the present invention relating to a subterranean horizontally oriented in-drain below the conventional leaching field that is adapted to be fed with a soapy solution to improve the biodegradation under anaerobic conditions heretofore possible only with wastewater treatment systems adapted to separate gray water from black water sewage.

Abstract: A water-saving irrigation device of the type that is utilized for the irrigation of vegetation and trees in arid desert areas is provided. The irrigation device includes a water inlet port, a water outlet port and a water storage container. The water inlet port is positioned at the upper section of the water storage container, attached to the cover and the water input nozzle of the water storage container. The water outlet port is positioned at either the lower section or the lateral section of the water storage container. The water outlet port has a perforated cover plate mounted against a sediment trap layer disposed within a water output nozzle. The sediment layer can be constructed from fine fabric or interwoven fibers. An air volume adjustment device is installed on the cover plate of water inlet port to control the amount of air admitted into the water storage container.

Abstract: An on-site wastewater treatment system distributes septic tank effluent over a particulate media filter bed through a distribution manifold at a sufficient volumetric flow rate relative to the cross-sectional area of the distribution conduits to inhibit undesirable biological growth in the conduits and in the filter by creating a scouring effect in the conduits. This effect prevents clogging of the conduits and maximizes the even distribution of effluent in the filter. A mesh fabric intercepts the downward flow of the effluent in the filter to further aid in the even distribution of effluent in the filter. Orifice shields also aid in such distribution by preventing clogging of orifices embedded in the filter media. A high pressure switch in the distribution manifold and a high water alarm in the filter pump basin indicate when required maintenance is necessary, and the switch controlling the high water alarm temporarily disables the septic tank pump as well.

Abstract: A drainage system comprises a drainage passage for a drain water, a pump for pumping up the drain water from the drainage passage to a drain portion which is arranged above the drainage passage, and a storage tank which has an inlet connected to the drainage passage to receive the drain water therethough from the drainage passage into the storage tank, and a height of the inlet is higher than that of the drainage passage and lower than that of the drain portion so that an ascent of upper surface of the drain water from the drainage passage is restrained after the drain water ascends to the inlet from the drainage passage.

Abstract: Device (27) to load reinforcement rods, which is suitable to cooperate with an excavation equipment (14) in providing lengthwise reinforcements in tunnels, particularly in excavations of a great depth amounting to about twenty meters or more, the excavation equipment (14) being borne on an excavator machine (10) and being able to rotate by an angle "alpha" from one or the other of two lateral inactive positions (A-B), the excavation equipment (14) comprising a drilling head (19) suitable to cooperate alternately with drilling means (20) and with the rods (25), the device consisting of at least one movable arm means (29) connected (28) to the excavation equipment (14) and lodging shaped movable sector means (32) and shaped clamping means (33), both shaped means (32-33) being connected to second and third actuation means (35-38) for cooperation therewith and with the at least one movable arm means (29) in positioning, clamping and unclamping the drilling means (20) and the reinforcement rods (25), the at least

Abstract: A system for leaching septic effluent is disclosed which includes a concrete distribution box having inlet and outlet openings formed therein located at different levels. An open-topped tray pivotally mounted in the distribution box at a level located between the levels of the inlet and outlet openings and has a counterweight secured to one side side of its pivotal mounting and a first stop to maintain the tray in a horizontal position against the action of the counterweight when the tray is empty. The tray is located to receive effluent from the inlet opening and the counterweight is dimensioned to be overcome by effluent in the tray when a predetermined amount of effluent is in the tray. As a result, the tray pivots against the influence of the counterweight away from its first stopped position to empty the tray and discharge the predetermined amount of effluent to the outlet openings.

Abstract: A housing for use with a drip irrigation emitter whereby the emitter can be disposed in the housing underground. The housing comprises a tubular body open at one end which is selectively closable by a cover, the other end of the interior defined by the tubular body comprising a wall having restricted openings therethrough to restrict ingress of soil and other matter to the interior but to allow water out. The tubular body has on its exterior surface a flange which stabilizes the housing in use and prevents the tubular body from being accidentally pulled from the ground. Buttresses may be provided to reinforce the flange and to prevent twisting of the tubular body in the soil. The drip emitter is preferably supported in the interior clear of the bottom of the tubular body.

Abstract: An improved water distribution system characterized by a construction including an irrifluent pipe disposed below the soil surface for dispersing water or treated waste water at a controlled rate. The irrifluent pipe includes an inner fluid conduit having apertures formed therethrough and an outer cover mounted in partially surrounding relation to the inner conduit and overlying the apertures. The outer cover is attached to the inner fluid conduit in spaced apart relation thereto so that the dispersed fluid slowly seeps into the ground.

Abstract: An irrigation ditch gate, comprising port means for defining a passage for conduction of water, configured for mounting in a wall of an irrigation ditch and attached to a frame. A plate means comprising a generally circular plate is pivotally mounted on the port means, for being pivoted transverse to the passage, between a closed position to cover the passage and prevent the flow of water therethrough, and an open position to substantially uncover the passage to permit the flow of water therethrough. A handle lever moves the gate between the closed and open positions being pivotally attached on a first end to the plate. A moving fulcrum is provided for the handle by a second lever having one end pivotally attached to the frame and a second end pivotally attached to the handle. A retention means exerts a retaining force on the handle so that the plate is urged into close wiping engagement with the port means.

Abstract: A fluid flow control device particularly useful as a drip irrigation emitter comprises a body member formed with at least two grooves in spaced parallel relationship separated by a separator wall, one of which grooves leads to the inlet and the other to the outlet; and a flexible member overlapping the two grooves and separator wall so as to meter the flow between the two grooves for substantially the complete length of the separator wall in response to the dynamic pressure of the flowing fluid.

Abstract: The present invention relates to a flow restrictor for insertion into the inlet of a pipe to restrict fluid flow within said pipe to a predetermined maximum. The flow restrictor is comprised of a tapered tubular hollow body portion having a smaller diameter and a larger diameter end. A cover plate is attached to the larger diameter end. An aperture having a predetermined cross-sectional area is located in the cover plate. The smaller diameter end is open to fluid flow. The predetermined cross-sectional area of the aperture determines the predetermined maximum fluid flow.