Abstract: A closed modular ditch liner includes a plurality of closed liner sections, a plurality of covers, and at least one alignment key. The cross section of each closed liner section includes at least one trough contour and a single cover retention lip formed on a top end of each side thereof. Each cover is laterally retained between the two cover retention lips. A key slot is preferably formed on at least one side of the closed liner section to receive a single alignment key. However, alignment keys that do not require a key slot may also be used.

Abstract: A cover for a drainage device, in particular a drainage channel with a channel body such that the cover can be set on an upper edge of the channel body, which comprises detent ridges that extend into the channel body and which has at least one fixing element to attach the cover to the channel body or to a frame disposed on the channel body to reinforce its upper edge, such that in a locked state the fixing element engages a recess in the channel body or frame. In order to achieve durable fixation of the cover on the channel body, while enabling the fixing element to be simple to manufacture and install, and the channel cross-section to remain free, the detent ridges comprise at least one aperture to guide the fixing element, which projects out of that aperture.

Abstract: An open modular ditch liner includes a plurality of open liner sections and at least one channel alignment key. The at least one channel alignment key is sized to receive a thickness of two adjacent open liner sections. An erosion barrier insert may be placed between the ends of two adjacent open liner sections. A radius liner insert may be placed between the ends of two adjacent open liner sections. The width of an open liner section may be expanded with a plurality of side connection keys and a plurality of expandable liner sections. A plurality of pitch expandable liner sections may be inserted between the plurality of open liner sections and expandable liner sections. At least one side of the plurality of open liner sections and expandable liner sections may be mitered.

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 slot drain including a throat portion having two walls and a separator arranged to separate the two walls. The separator includes lateral projections passing through holes in the two walls. The lateral projections are bent over the two walls to retain the two walls against the separator as well as to maintain the separator in position.

Abstract: A deck drainage system having a plurality of channeled drainage panels. The drainage panels are mounted to direct water flow transversely of the deck joists to a gutter, the panels connected to and suspended from the underside of the joists. The gutter is mounted transversely across the discharge ends of the drainage panels to collect water therefrom and direct it to a down spout. Drainage panels, which are rectangular with the individual drainage channels extending lengthwise, may be overlapped both lengthwise and widthwise to fit the perimeter of the deck.

Abstract: A channel system for forming a trench is disclosed that includes a number of precast drainage channel sections and one or more alignment keys for aligning and interlocking adjacent channel sections. Each alignment key includes a base shaped for laterally bridging across a predetermined exterior portion of adjacent bottom walls of the adjacent channel sections. The alignment key also includes first and second opposed, inwardly facing jaw members shaped for longitudinally bridging across a predetermined exterior portion of adjacent first and second sidewalls, respectively, of the adjacent channel sections. Each pair of the jaw members can be carried by a respective base, and can be positioned in a lateral and longitudinal direction relative to the respective base to thereby substantially align and interlock the adjacent channel sections.

Abstract: The invention relates to a drainage device for surface drainage, in particular to drainage channels with a channel body and a frame which fits on an upper edge of the channel body, comprising an outer arm and an inner arm between which the upper edge of the channel body sits, for housing a cover. According to the invention, simple economic production and assembly of the frame on the channel body may be guaranteed whereby the frame is embodied such as to be able to be cast within the body of the channel body on the casting thereof, or alternatively, may be fixed to the channel body by means of continuous jointing to a pre-fabricated channel body.

Abstract: An open modular ditch liner includes a plurality of open liner sections and at least one alignment key. A substantially concave shape is formed in a top of each open liner section. At least one key slot is preferably formed on at least one side of each open liner section to receive at least one alignment key. The key slot may have an interference fit. An angle may be formed on at least one end of each open liner section. A key block with the same length of a open liner section may be used as an alignment key. A riser block may be used to terminate at least one side of at least one open liner section.

Abstract: The specification and drawing figures describe and show one or more improved ditch liners removably assembled into an improved ditch liner system. The improved ditch liner system includes a first liner section and a second liner section. Both liner sections are formed with a plurality of tightly peaked arc-and-ridge corrugations. Also included is a novel and unique overlap connection assembly for removably connecting one liner section to another liner section. In addition, various ways for sealing the overlap connection assembly are included. The interconnected system of improved ditch liner sections may be secured in a ditch by one or more removable rods. This abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure, but this abstract is not to be used to interpret or limit the scope or meaning of any claim.

Abstract: A baffle apparatus and method for directing fluid flow to reduce damage to an energy dissipating basin that includes an inlet, an outlet, a floor, a sidewall that extends upward from an edge of the floor, and an opposing sidewall that extends upward from an opposing edge of the floor defining a basin interior with a basin span between the sidewall and the opposing sidewall. The baffle apparatus includes a deflector structure that is generally planar and is fixedly or adjustably positioned substantially transverse to a downstream direction flow in the basin, the deflector structure spanning between the sidewall and the opposing sidewall above the floor. Also included, is a retaining structure for fixedly or adjustably positioning and securing the deflector structure to the sidewall. The deflector structure directs flow in the basin to flow in a downstream direction from a reverse upstream direction adjacent to the basin floor.

Abstract: The invention discloses a method of predicting the fluid level at a predetermined location in a fluid flow network (10) having at least one regulator (16, 18) to control the flow of fluid along fluid flow network (10). The method includes the steps of collecting data based on timed measurements of fluid levels upstream (24, 28) of at least one regulator (16, 18), fluid levels downstream (26, 29) of at least one regulator (16, 18) and the opening position (30, 32) of at least one regulator (16, 18), and using data analysis (40) to provide a model based on the data whereby the model will provide prediction of fluid level at the predetermined location based on timed measurements of fluid levels upstream (24, 28) of at least one regulator (16, 18) and the opening position (30, 32) of at least one regulator (16, 18).

Abstract: A channel system for forming a trench is disclosed that includes a number of precast drainage channel sections and one or more alignment keys for aligning and interlocking adjacent channel sections. Each alignment key includes a base shaped for laterally bridging across a predetermined exterior portion of adjacent bottom walls of the adjacent channel sections. The alignment key also includes first and second opposed, inwardly facing jaw members shaped for longitudinally bridging across a predetermined exterior portion of adjacent first and second sidewalls, respectively, of the adjacent channel sections. Each pair of the jaw members can be carried by a respective base, and can be positioned in a lateral and longitudinal direction relative to the respective base to thereby substantially align and interlock the adjacent channel sections.

Abstract: An assembly is provided for forming a trench of a predetermined shape. The trench-forming assembly includes a removable longitudinal form body, a pair of frame members and at least one mounting bracket assembly. The form body is capable of shaping a moldable trench forming composition poured around the form. Each frame member includes a support surface, and is in engagement with a respective side surface of the form body. The mounting bracket assemblies, each of which can include a mounting bracket and a pair of hook members, extend laterally across the top surface of the form body. In this regard, each mounting bracket assembly removably engages a downwardly facing side of the support surface of the frame members.

Abstract: A ditch liner system is provided. The ditch liner system includes a plurality of removably engageable corrugated ditch liners. Each of the removably engageable corrugated ditch liners is monolithically formed with a compressibly connectable member at one end, and a coupling channel at the other end. The compressibly connectable member, and the coupling channel, are reciprocally and compressibly connectable. A duct is formed in the compressibly connectable member for insertion of a sealant. A groove is formed in the coupling channel for inserting one or more connectors. An adapter is provided for directing water from the ditch.

Abstract: A modular ditch liner have open and closed embodiments. An open modular ditch liner includes a plurality of open liner sections and at least one alignment key. A substantially concave shape is formed in a top of each open liner section. A key slot is preferably formed on at least one side of each open liner section to receive a single alignment key. A closed modular ditch liner includes a plurality of closed liner sections, a plurality of covers, and at least one alignment key. The cross section of each closed liner section includes at least one trough contour and a single cover retention lip formed on a top end of each side thereof. Each cover is laterally retained between the two cover retention lips. A key slot is preferably formed on at least one side of the closed liner section to receive a single alignment key.

Abstract: An apparatus and method for lining ditches is provided. The apparatus and method for lining ditches, according to the present invention, includes a plurality of substantially corrugated liner sections, preferably made of a thermoplastic material such as polyethylene. Each liner section is designed to be assembled by detachably engaging ends of ditch liner sections. A sealant that does not bond with the material from which the liner sections are made may also be included. An inlet/outlet channel is included. The inlet/outlet channel is removably connectable with at least one end of a liner section by snapping together the two components. A liner section in the form of a splitter section also is provided. A splitter section permits rerouting the flow of water in a variety of directions through a ditch lined with the apparatus of the present invention. Also, a diverter section is included for diverting water from one flow direction through the ditch to a point or area of application of water.

Abstract: A gutter cover for directing the flow of rainwater from a building roof into a gutter mounted to the peripheral edge thereof while preventing debris such as leaves and twigs from entering and clogging the gutter. The cover is secured to the roof of the building such that rainwater flowing down the shingles will flow across the cover at the bottom roof line. A lower end of the cover has an arcuate nose disposed substantially above the outer edge of the gutter. The surface of the gutter is treated with one or more combinations of coatings and/or substrate textures to slow the flow of water while improving flow to the cover surface. Rainwater will flow around the arcuate nose into the gutter while debris carried by the rainwater is expelled outwardly over the edge of the gutter.

Abstract: A modular trench drainage system for placement in a trench of a natural surface or pavement. The system includes a base conduit, a grate cover pivotably secured to the base conduit for covering the base member, a coupling mechanism for pivotably securing the grate cover to the base conduit, an alignment mechanism for aligning the grate cover with respect to the base conduit when the grate cover is placed in a closed position over the base conduit, and a locking mechanism for locking the grate cover to the base conduit.

Abstract: A method and apparatus for forming a trench drain includes an elongated trench form, first and second spaced apart frame rails, a support member and a first and second fastener. The trench form includes at least one folding member folded along predetermined lines. The support member is affixed to the first and second frame rails to maintain the first and second rails in a fixed position relative to each other. The support member includes first and second fastener bearing surfaces spaced above respective uppermost surfaces of transverse portions of the first and second frame rails. The first and second fastener bear against fastener bearing surfaces of the support member and releasably engage the first and second frame rail. A joint support member may be included to align adjacent trench drain assemblies.

Abstract: A box gutter connector is in the form of a trough having first and second limbs for connection to gutters, one limb being for connection to a box gutter and having its outer surface shaped to aid spread and keying of adhesive/sealant between the connector and the box gutter.

Abstract: The present invention is directed to a method and apparatus for forming a trench drain. In one embodiment, the apparatus for forming a trench drain includes an elongated trench form, first and second spaced apart frame rails, a support member and a first and second fastener. The trench form includes at least one folding member folded along predetermined lines. The support member is affixed to the first and second frame rails to maintain the first and second rails in a fixed position relative to each other. The support member includes first and second fastener bearing surfaces spaced above respective uppermost surfaces of transverse portions of the first and second frame rails. The first and second fastener bear against fastener bearing surfaces of the support member and releasably engage the first and second frame rail. A joint support member may be included to align adjacent trench drain assemblies.

Abstract: An assembly for forming a trench comprising a frame having two elongated members that define a support surface and at least one opening. The assembly also includes a removable grate that is disposed on the support surface and includes a hook that is disposed proximate the opening defined by the elongated frame members. The assembly also includes a removable pin that is slidably inserted through an opening defined by an elongated member and is mechanically engaged by the hook of the grate to secure the grate to the frame.

Abstract: A surface of a canal, ditch or pipe is lined with a polyurethane/geofabric composite. A non-sagging polyurethane composition is applied to the canal, ditch or pipe surface, a geofabric is contacted with that surface in a manner such that the geofabric becomes impregnated with the non-sagging polyurethane composition which cures to form a polyurethane/geofabric composite. The non-sagging polyurethane is a reaction product of a polyisocyanate, a high molecular weight polyhydroxyl compound and a compound having at least 2 amino groups. A low molecular weight diol or triol, filler and catalyst are optional components. These composites are particularly useful in lining cracked or broken concave or angled surfaces.

Abstract: An assembly for forming a trench is described comprising a frame having two elongated members that define a support surface and at least one opening. The assembly also includes a removable grate that is disposed on the support surface and includes a hook that is disposed proximate the opening defined by the elongated frame members. The assembly also includes a removable pin that is slidably inserted through an opening defined by an elongated member and is mechanically engaged by the hook of the grate to secure the grate to the frame.

Abstract: An irrigation canal includes a plastic liner mechanically connected to the canal by fasteners extending through tabs located between the liner and the canal so the fasteners do not extend through the membrane providing leak protection. Adjacent the side walls of the canal, the tabs have a free end above the fixed end so that the tab is easily accessible during installation. The plastic is reinforced with a fiber mesh and has a tear strength above 100 pounds force. In the case of a concrete lined canal, a pilot hole is drilled in the concrete and a fastener is driven through the tab into the pilot hole. In the case of an earthen canal, anchors are embedded in the earth along the length of the canal and longitudinally extending members are connected between the anchors. The plastic liner is mechanically connected to the longitudinally extending members.

Abstract: A modular trench drainage system for placement in a trench of a natural surface or pavement. The system includes a base conduit, a grate cover pivotably secured to the base conduit for covering the base member, a coupling mechanism for pivotably securing the grate cover to the base conduit, an alignment mechanism for aligning the grate cover with respect to the base conduit when the grate cover is placed in a closed position over the base conduit, and a locking mechanism for locking the grate cover to the base conduit.

Abstract: A double walled flume and leak detection system includes a flume with a liquid containment wall with an outer surface and an inner surface. The flume is designed to contain a liquid therein. A secondary wall has a first and second edge which are spaced apart and joined to the outer surface of the liquid containment wall so as to define a secondary containment area between the outer surface of the liquid containment wall and the secondary wall. A leak detection system is in communication with the secondary containment area for detecting the presence of liquid in the secondary containment area so that a leak may be detected.

Abstract: A portable pollution control apparatus designed to span a creek or other small waterway. The apparatus includes an adjustable length boom which extends across the creek; an elongated, hydrocarbon-absorbent sock which is suspended from the boom and extends within the creek downstream from the boom; and a sheet of water-porous fabric connectable to the boom and extending upstream therefrom to function as a sediment trap. The fabric sheet in preferably deployed on the creekbed and banks to form a settling pond immediately upstream from said boom to permit settling of sediment.

Abstract: A system for diverting rain water from the underside of a deck structure is comprised of a side-by-side array of flexible water-collecting elements , each of which collect and divert rain water from a regional area of the deck structure. Each water-collecting element is shaped to control the flow of water without restriction or impediment. This shape further increases the rigidity to the water-collecting element making it relatively easy to install and support. Coupling elements are interposed between adjacent water-collecting elements which function to fix them together such that the resulting array gains structural properties and impermeability comparable to a single corrugated sheet of the same material. Mounting elements secure this array to the underside of the deck. The result is an aesthetically attractive and environmentally rugged system which is realized with very economical components.

Abstract: An irrigation ditch liner system comprises a plurality of liner sections including at least one straight conduit section and one corrugated conduit section, each conduit having a semi-cylindrical body portion defining a conduit interior diameter, vertical walls extending from the semi-cylindrical body portion, and end sections having extending end flanges with an interior diameter greater than said conduit interior diameter. A connecting joint is provided with an outer wall and an inner wall, the inner wall having a interior diameter the same as the conduit interior diameter, where the outer wall of the connecting joint further defines a depending lip that captures the end flanges between the inner wall and the outer wall of the connecting joint.

Abstract: A bi-partite sluiceway apparatus with silt removal tray components consisting of a pair of elongated three-sided bottom containment trays with triangularly shaped soffet units affixed to outer walling of lateral sides of each and with each having oppositely inclined beveled posterior ends with each tray holding at top edging of lateral sides thereof, elongated three-sided silt collection trays each with beveled posterior ends as well and with each silt collection tray having a grasping plate characterized by the presence of a concentrically positioned through hole and being affixed to lateral sides thereof near a front end thereof and with each silt collection tray being swiveably lockable to a containment tray by way of a nut and bolt assembly insertable through concentric through holes near frontal ends of each tray, and with all beveled ends in contact with one another upon complete assembly of the apparatus within a roadbed.

Abstract: An apparatus for forming a trench which is adapted to receive at least one grate that will cover the trench. The apparatus comprises first and second frame rails that are connected by at least one removable spacer. The spacer is sized and configured to maintain proper alignment and spacing between the first and second frame rails during the formation of the trench. The removable spacer is connected to the first and second frame rails with spacer securing means. In addition to securing the at least one spacer to the first and second frame rails, the securing means also can be used to fixedly secure the at least one grate in place on the first and second frame rails.

Abstract: A non-clogging facility (10) collects debris and sediment carried by water flowing in an open channel (DC) upstream of an inlet (I) to a conduit. A first section (12) provides a transition from the open channel into a second section (13) which allows for collection of large debris and readily settleable sediment. A barrier (16) comprises a base (18) extending from a sidewall (W1) on one side of the channel, substantially across the width of the channel, toward the opposite sidewall (W2). An opening (20) is provided between the end of this barrier and the opposite sidewall. Water flowing at a low rate is diverted through the opening into a bypass channel (22) to flow to the inlet through a third section (14). At higher flow rates, water flows over the barrier and through a screen formed by a series of spaced posts (26) extending the length of the barrier. Sediment settles to a floor (F) of the channel upstream of the barrier and is blocked by the barrier from moving further downstream.

Abstract: An elongate grate capable of securing an edge portion of an artificial turf surface within a drainage channel is provided. The grate includes an elongate central portion defining a plurality of openings to permit runoff from the artificial turf surface to flow into the drainage channel. Connected to at least one exterior edge of the central portion is a downwardly extending wall portion being interior of the exterior edge for applying a downwardly directed engagement force to the edge portion of the artificial turf surface. According to another embodiment of the grate, an elongate slot is integrally defined in the central portion having a width such the edge portion of the artificial turf can be frictionally engaged therein. According to yet another embodiment, a grate is provided with a central portion positioned between opposed edge portions and defines a plurality of openings therein such that an impervious athletic surface can be formed over each of the edge portions.

Abstract: An improved method for constructing filter underdrain systems may be provided which uses prefabricated underdrain cells. The prefabricated underdrain cells may have a one piece construction having side walls and a bottom. The side walls may include a porous plate support ledge with a ridge at the center of the ledge. The ridge helps ensure that the sealant forms a uniform and effective gasket when the porous plates are installed.

Abstract: An end cap for a drainage system comprises a wall element having substantially the same profile as the cross-section of the end of the trench drain channel section. The wall element is adapted to be coupled to the trench drain channel section to form a terminal end of the channel section. At least one transverse groove is provided in the channel section so that, when the end cap is separated at the groove, the height of the end cap corresponds to the depth of the channel section. Typically, a plurality of transverse grooves are provided at spaced intervals along the vertical height of the wall element which correspond to different possible depths of the channel section. Thus, the end cap may be adapted to fit any one of a number of channel sections, regardless of depth. The end cap may further comprise a pipe coupler integrally molded with the wall element such that the wall element and coupler are substantially continuous.

Abstract: A method and apparatus for forming a trench or catch basin void with removable cardboard components that fold up to create a three dimensional trench void form, and pair of elongated frame members to define a support surface for a trench cover is disclosed according to the present invention. The removable cardboard form includes a rectangular shape with outwardly extending edges running longitudinally along the top surface. A pair of elongated frame members lay in a coplanar, spaced relationship to the side and bottom of the outward extended top edges of the predetermined form. The frames are used to define a surface to support the trench covers. A pair of U shaped support legs are joined at the ends to the frame members with nuts in order to maintain clearance for total encasement and adjust the top of the form to the desired finish elevation. Another preferred embodiment utilizes a rectangular rail for creating a drain support in a finished catch basin.

Abstract: The present invention is directed to composites and multi-composites of a prefabricated core of a cellulosic honey comb filled with a rigid polyurethane and layers of fiber saturated thermoset resins. More specifically, the present invention is directed to composites and multi-composites of a cellulosic honey comb filled with rigid polyurethane prefabricated core and a fiber reinforced material, either fibers or woven fibers selected from the group consisting of glass, polyester, carbon and aramid fibers as a mat or cloth saturated with a thermoset resin selected from the group consisting of catalyzed polyester, amine catalyzed epoxy, catalyzed vinyl ester and acid catalyzed furan resins.

Abstract: A dock module comprises an air-tight flotation chamber with a buoyant foam material positioned within an upper end thereof. The flotation chamber includes aperture positioned on its bottom end to permit water to enter the chamber and serve as a ballast. To float the dock module, compressed air is injected into the flotation chamber to increase the module's buoyancy and adjust its freeboard so that the buoyant foam is lifted completely above the water contained within the flotation chamber. If the air-tight flotation chamber fails, the buoyant foam will prevent the dock module from becoming submerged. Each module comprises a plurality of longitudinally and laterally extending tubes that can be used to attach the module to a like module using tubular couplers and tensioned cabling. Multiple modules can thus be joined in any desired configuration to yield a floating dock system having virtually any desired geometry.

Abstract: A trench forming assembly for forming a trench of predetermined shaped is disclosed according to the present invention. The assembly includes a pair of elongate frame members for defining a support surface for supporting a trench cover and at least one downwardly extending leg attached to each frame member for anchoring the frame members in a predetermined location. The assembly also includes a form body for shaping a hardenable trench forming composition into the predetermined shape of the trench and having an upper surface, opposed side surfaces and a bottom surface. The trench forming assembly further includes at least one counterbuoyancy member extending between the frame members and having a generally downwardly facing engagement surface for operatively engaging a portion of the upper surface of the buoyant form body between the frame members. The counterbuoyancy member can also have an upper surface, opposite the engagement surface, for operatively engaging the elongate frame members.

Abstract: A trench liner system used for forming a single or a dual containment trench where expansion and contraction of the liner is controlled. For single containment, the trench system has a primary liner or a primary liner and a separator. For dual containment, the trench system has a primary liner and a secondary liner, or a primary liner, a separator and a secondary liner. Each system also includes anchors spaced along the length of the liner so as to partition the liner into juxtaposed vertical segments. The anchors allow unimpeded contraction and expansion of the liner between anchors within a segment. These embodiments may include a holding element for holding the liners against the trench walls so as to allow each segment to expand and contract along its respective length. Another embodiment of this invention provides laterally extending cavities spaced along the length of the trench.

Abstract: A trench liner system used for forming a single or a dual containment trench where expansion and contraction of the liner is controlled. For single containment, the trench system has a primary liner or a primary liner and a separator. For dual containment, the trench system has a primary liner and a secondary liner, or a primary liner, a separator and a secondary liner. Each system also includes anchors spaced along the length of the liner so as to partition the liner into juxtaposed vertical segments. The anchors allow unimpeded contraction and expansion of the liner between anchors within a segment. These embodiments may include a holding element for holding the liners against the trench walls so as to allow each segment to expand and contract along its respective length. Another embodiment of this invention provides laterally extending cavities spaced along the length of the trench.

Abstract: A resilient edge adapter is provided for defining an edge of a drainable athletic playing surface formed of a moldable material. The edge adapter includes a base portion for cooperably engaging an upper portion of a drainage channel and an upstanding portion extending upwardly from the base portion for restraining the moldable material when applied adjacent to the drainage channel, thereby defining an edge of the athletic playing surface. The upstanding portion may be formed of a resilient and elastically deformable material and the base portion may include an elongate continuous plug portion to cooperably engage a corresponding slot defined in the upper edge of the channel. An edge adapter is also provided which has a pair of upstanding portions extending upwardly from a base portion for forming a running track surface over both opposed edges of a grate. Associated methods for forming athletic playing surfaces are also provided.

Abstract: A rain gutter shield preferably having (a) an elongated layerless screen of porous, non-woven polymeric fiber material and (b) two elongated semi-rigid ribs on each lateral edge of the screen. One of the ribs may have a header portion thereon sized to fit under the shingles on the roof of the building on which the rain gutter is mounted. Alternatively, each rib may have a channel formed in the lateral edge of that rib which is not attached to the elongated layerless screen so that the channels snap fit over the edge of a rain gutter. The method of installation may involve not only the use of the preferred rib structure, but also simply gluing or bolting one lateral edge of the elongated layerless screen to the lip of the rain gutter most distant from the building to which the rain gutter is mounted and, then, attaching the other lateral edge of the elongated layerless screen to the roof of that building.

Abstract: A flexible trench liner system used for forming a single or a dual containment trench where during a trench overflow, the liquid run-off is prevented from migrating behind the primary flexible liner or behind the secondary flexible liner and possibly leaking onto the trench walls and bottom. The system includes an upper portion on the flexible liner means that overlaps at least a portion of the bearing surface of the trench. The overlapping upper portion of the flexible liner can be part of the primary liner and/or the secondary liner. The flexible liner means are held against the trench walls and the bearing surface by a holding means.

Abstract: An elongate drainage channel capable of receiving runoff from an athletic surface is provided which includes a bottom wall and a pair of sidewalls extending upwardly from the opposed sides of the bottom wall. The drainage channel also includes a projection extending transversely outwardly from the exterior of at least one of the sidewalls and spaced at a predetermined distance below the open top for defining a height to which a subsurface layer is applied adjacent to the drainage channel. The projection is also fracturable from the sidewall so as to act as a mechanical fuse to prevent vibratory or tamping machinery from damaging the drainage channel. In another embodiment of the invention, an elongate channel section is provided which has a bottom surface which includes end portions which are shaped as generally planar reference surfaces.

Abstract: A support frame assembly is provided for supporting drainage channel sections adjoined in an end-to-end relationship and for anchoring the drainage channel sections to a support surface. The support frame assembly includes a pair of substantially vertical legs and a channel support piece mounted to the upper end portion of each of the legs for supporting the drainage channel sections. The support frame assembly also includes a cross member extending between the lower end portions of the legs at a position below the channel support pieces. In one embodiment, a pair of aligned openings are provided in the cross member and one of the legs so that an anchor member can be driven through the openings and enter the support surface at an acute angle relative thereto. In another embodiment, hinge members are provided between the cross member and the legs so that the cross member can be oriented to sit flat on a sloped surface. Associated methods also form a part of the invention.

Abstract: A trench liner system used for forming a single or dual containment trench comprising a primary liner alone or a primary liner with a secondary liner. In a single containment trench, a primary liner means extends along the length of the trench, and includes a plurality of ribs or pleats spaced laterally along the exterior side of the primary liner, so that the primary liner means is supported within the trench by the ribs or pleats and plurality of cavities are formed between the primary liner means and the trench wall and bottom. For a dual containment trench, the secondary liner means also comprises a plurality of ribs or pleats spaced along the exterior side of the secondary liner, so that the secondary liner means is supported by the ribs or pleats and a plurality of cavities are formed between the secondary liner means and the trench wall and bottom.

Abstract: A structure for use with water drainage inlets includes an outside wall portion, a perforated bottom portion, and an inside wall portion. The outside wall, bottom, and inside wall together define a trough for retention of a replaceable filter media. The trough is installed on the inside surface of a drainage structure so that drainage water that would normally flow directly through the drainage structure is caused instead to flow through the filter media, thereby removing undesirable materials that may be carried in the water, while permitting the water itself to pass through essentially unimpeded to the ultimate drainage location.