WO2007054130A1 - Subsurface stormwater system - Google Patents
Subsurface stormwater system Download PDFInfo
- Publication number
- WO2007054130A1 WO2007054130A1 PCT/EP2006/001062 EP2006001062W WO2007054130A1 WO 2007054130 A1 WO2007054130 A1 WO 2007054130A1 EP 2006001062 W EP2006001062 W EP 2006001062W WO 2007054130 A1 WO2007054130 A1 WO 2007054130A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unit
- sub
- units
- pillars
- modular
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
- E03F1/005—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells via box-shaped elements
Definitions
- This invention relates to subsurface stormwater (or waste water) systems.
- Subsurface stormwater systems are used in construction to both provide a structural support layer and to receive and disperse excess water. Such systems replace die traditional aggregate used for these purposes. These systems have application in paved areas such as carparks and roads, and in. building foundations. Further applications include linear drainage systems in which conventional drainage pipes can be replaced by stormwater attenuation systems covered in geotextile, and soajfcaway $ystems which have application, for example, in attenuating floodwater in a roadside field to prevent flooding of the road.
- the invention provides a modular subsurface stormwater unit of generally cuboid external form having equal rectangular top and bottom surfaces spaced apart by a set of four pillars, each of which runs from a corner of the top surface to a corresponding corner of the bottom surface, said pillars defining therebetween a void having a generally cruciform cross section, said void opening onto each of the four side faces defined between the roof and the base.
- the cuboid units can be connected together side to side, such that rae void opening between a pair of pillars on one unit matches the void opening on another unit.
- the two voids thus connect together, and a througbway js created between an arm of the cruciform void on one unit and an. arm on the cruciform void of another unit.
- a line of units connected together in series side to side will have a long Ranoughway fanned by the respective voids in each unit.
- the throughway can be visualised by the horizontal line in formed in a row of adjacent "plus" symbols: -H-++++. It will be readily appreciated that a regular matrix of X- and Y-axis throughways will be formed as units are connected laterally on all sides.
- the pillars each run from a corner of the top surface to a comer of the bottom surface, it is to be understood that the pillars need not be at the apexes of the comers. It is sufficient if each pillar is located generally towards its respective corner, so that the space between the pillars is generally cruciform. There can be a lateral gap between the outermost part of any pillar and the actual comer apex of the top and/or bottom surface. . . . ,
- This aspect of the invention provides a network of perpendicular tunnels in a system of adjacent modular units, aiding in inspection and maintenance of the system, and also allowing uninterrupted flow of liquid through the system with less chance of blockages occurring in the first place.
- the cuboid units are in fact generally cubic and thus the rectangular top and bottom faces are in fact square and equal to each of the four side faces. Cubic units are easier to stack alongside one another without requiring any particular orientation, other than to ensure that the top and bottom surfaces (which can be identical, so that there is no distinction between the top face and the bottom face) are at the top and bottom.
- the invention provides a sub-unit of a modular subsurface stormwater unit, the sub-unit comprising a generally square face (which provides a top or bottom face of a finished unit) having a set of four half- pillars extending therefrom, one at each corner of the face, each half-pillar terminating at a mating connection which is adapted to mate with an identical mating connection of another identical sub-unit to provide a generally cuboid modular unit, the mating connections of the four half-pillars being disposed such that when two sub units are brought into engagement with their square faces aligned and the mating connections approaching one another 9 each of the mating connections on one sub-unit engages with a complementary mating connection on the other sub-unit, for each of the four aligned orientations of the two square faces.
- each mating connection has a clip which snaps onto an identical clip on another unit
- each clip is disposed such that it will be brought into engagement to connect to an identical clip, even if one of the sub-units is rotated through 90, 180 or 270 degrees relative to the other.
- each mating connection has a first structure and a complementary second structure, the first and second structures being arranged such that when two sub-units are brought into engagement as aforesaid each first structure on one of said sub-units is aligned with and engages with a second structure on the other of said sub-units and vice versa, and this remains true , even if one of the sub- units is rotated through 90, 180 or 270 degrees relative to the otiier,
- Another way of considering this aspect of the invention is to examine a plan view of the set of mating connections on a sub-unit taken from above (i.e. from the side distant from the square face) and a plan view taken from below (from the side of the mating connections on which the square face is located). If the first structures are male projections and the second structures are female recesses, the invention provides that when the two plan views are superimposed,, all of the male parts will overlie female parts and vice versa, this again being true when one of the views is rotated through a multiple of 90 degrees.
- each pair of first and second structures is arranged such that when projected onto the plane of the square face, the first and second structures are symmetrically disposed about a notional diagonal extending from one comer of the square face to the opposite comer.
- the mating connection on a given half-pillar comprises a peg and a complementary hole
- the peg and hole will preferably be on opposite sides of the diagonal extending from that half-pillar to the opposite comer, with the line connecting the peg and hole being perpendicular to that diagonal. ' .
- the invention provides a modular subsurface stormwater unit of generally cuboid external form having equal rectangular top and bottom surfaces spaced apart by a set of four pillars, each of which runs from a comer of the top surface to a corresponding corner of the bottom surface, said pillars defining therebetween a void having a generally cruciform cross section, wherein tfie top surface is provided with a central cut-out between the pillars to enable an inspection access point to be readily created in the top of any such unit in a system of laterally adjoined waits by removing said cut-out.
- Prior art stormwater attenuation systems are typically either not inspectable once installed, or are only inspectable from limited sites.
- such systems may have inspection chambers running along a single axis from one end to the other, with inspection being achieved via a manhole which is positioned to allow access to an end of an inspection chamber.
- the invention in its third independent aspect, provides each wait with an inspection access point (into which a camera or o&st inspection device may be lowered), and provides the potential for inspection along X and Y axes.
- the cut-outs in vertically adjacent waits can be cut away to allow inspection to occur in any of the layers of the system.
- Fig. 1 is a perspective view from above of a sub-unit according to the invention of a modular subsurface stormwater unit;
- Fig. 2 is a side elevation of the sub-unit of Fig. 1;
- Fig. 3 is a plan view from above of the sub-unit of Fig. 1 ;
- Fig. 4 is perspective view of a pair of sub-units, assembled into a modular subsurface sto ⁇ nwater unit according to the invention;
- Fig. 5 is a side elevation of the unit of Fig.4;
- Fig. 6 is a perspective view of modular stormwater system according to the invention comprising a pair of units connected laterally;
- Fig. 7 is a plan view of the system of Fig. 6;
- Fig. 8 is a perspective view of modular stomwater system according to the invention comprising a pair of units connected vertically;
- Fig. 9 is a perspective view of a detail at the end of a half-pillar of the sub- unit of Fig. 1.
- Fig. 10 is a perspective view of the detail of Fig. 9, taken, along a transverse direction;
- Fig. HA shows a schematic cross-section of a pair of half-pillars aligned for connection
- Fig. HB shows a schematic cross-section of a pair of half-pillars when connected;
- Fig. 12 shows a simplified view of the connecting components ia the detail ofHgs. 9 and 10.
- Fig. 13 is a plan view of a detail of a circular cut-out in the centre of a sub- unit;
- Fig. 14 is a plan view of the detail of Fig. 13, when a first portion of the circular cut- out has been removed;
- Fig. 15 is a plan view of the detail of Fig. 13, when a second portion of the circular cut- out has been removed.
- a sub-unit of the invention is shown, generally at 10.
- the sub-unit has a generally square face 12 which provides either a top or bottom face of a finished unit This will be referred to for convenience as the top face but it is to be understood that the embodiment is not limited to such orientation. It is also to be understood that the term "face” xefers not to a continuous surface but rather to the porous surface defined by the lattice network of ribs and struts 13.
- a half-pillar 14 extends from each comer of the underside (internal side) of face 12.
- the side "face” of the sub unit is formed of the outer surface of a pair of half pillars 14 and an opening 16 which leads to a channel running through to the opposite side face without interruption.
- the four generally square pillars define between, themselves a cruciform void, i.e. a pair of channels intersecting at right angles and opening onto each side where indicated at 16.
- FIG. 1 A number of clips 18 and slots 20 are provided to enable adjacent units to be connected to one another as will be explained in greater detail below.
- locking clips 22 and receiving holes 24 are also provided at the end of each half pillar 14 to enable two opposed half-pillars to interengage one another.
- Figs 4 and 5 show a pair of sub-units interconnected in this way to form a modular unit 26.
- An upper sub- ⁇ nit 10 and a lower sub-unit 10' are connected with the respective half pillars 14, 14' combining along each comer to fomi vertical pillars 28, one pillar at each corner.
- Each of the four pillars 28 runs from the top face 12 of the unit to tixe bottom face 12' of the unit 26.
- Each side of the thus formed cubic unit comprises the external surface of a pair of pillars 28 and a void opening 30 resulting from the openings 16 in the sub-units.
- the internal chamber leading from the void opening defined between the four pillars 28 extend from top face 12 to bottom face 12' and is of cruciform cross- section, i.e. the intersection of a pair of passageways each extending -without interruption from one side face to ifte opposite side face,
- the sub-units are held together, in part by the clips 22 and receiving holes 24 shown in Figs. 1 and 2.
- Fig. 5 one can see three of the clips 22 located witihin the receiving holes.
- a further and more sturdy connection is provided internally inside the pillars and will be described in more detail below.
- the modular unit 26 When a pair of sub-units has been assembled as shown in Figs. 5 and 6, the modular unit 26 thus provided can then be connected both laterally and vertically to like units along the X, Y and Z directions defined by the axes of the cubic units.
- Figs, 6 and 7 show a pair of units 26 connected laterally. It can be seen that the internal cruciform voids in the pair of units are aligned such that an uninterrupted throughway extends from opening 16A to opening 16B (Fig. 7). As the finished system will in most cases comprises large numbers of such units connected in laterally on all sides to foim a continuous block, it will be appreciated that the cruciform voids will be aligned in every pair of adjacent units to provide a matrix of uninterrupted throughways extending through the system.
- units 26 and 2 ⁇ " ' can be stacked vertically as well as laterally.
- the clips 22 and holes 24 on the peripheral edges of the units ate used to quickly attach units together to build up a three dimensional system-
- a circular structure 32 provides a cut-out section allowing a length of pipe or duct (not shown) to be attached onto the top of the system where a unit is located below a manhole or other access area. Because the circular cut-outs of stacked units (as seen in Fig. 8) coincide, the cut-outs can be removed from both the top and bottom faces of upper unit 26, and from the top face of lower unit 26', to provide access to not only lower unit 26% but also to the entire layer of laterally connected units (not shown in Fig. 8) of which unit 26' forms part.
- the circular cut-out features are described in greater detail below.
- connection between a pair of sub-units is effected not only by the peripheral clips, but also by a conaection internally of the pillars 28 formed by two abutting half-pillars 14.
- Each half-pillar includes an internal support post 40 from which the half-pillar 14 derives most of its vertical compressive strength to the pillars.
- Fig. 9 shows one such support post 40 in a perspective view taken from the direction of the centre of the sub-unit towards an outer comer point 42 of the half-pillar 14.
- Fig. 10 shows the support post in a perspective view taken along a perpendicular direction, i.e. across a corner of the sub-unit.
- a resilient clip 44 having a tooth 46
- a finger 48 having a generally rectangular footprint
- a detent member 50 having a generally square footprint
- Each of these three structures extends from a floor 52 which is recessed below an abutment surface 54, with the structures extending above the abutment surface.
- Figs. 1 IA and 1 IB Before and after engagement, respectively.
- Fig. 12 a stylised view of the mechanism is shown in Fig. 12.
- Figs. HA and 1 IB are taken in cross section as a pair of support posts 40, one from each of a pair of sub-units, approach one another and engage.
- the lower post is shown alortg a section taken on the dotted line indicated as XI-XI in Fig. 12.
- detent member 50 has a detent surface 56 which underhangs a sloped surface 58.
- a sloped surface 60 on the leading end of the descending clip 44 will thus contact and slide along the sloped surface 58, Tliis temporarily deforms the clip 44 until the tooth 46 on the clip has passed the underhanging 006/001062
- each detent member 50 and finger 48 which, protrude above the abutment surface 54 are accommodated in the recess (defined by the floor 52) on the opposing support post.
- the detent member 50 on one support post will be positioned alongside the detent member on the other support post, and similarly the fingers 44 will be alongside one another.
- the entire structure therefore interlocks snugly together and no torsional movement is possible, and nor is any translatioual (lateral) movement.
- the mechanism therefore locks completely and permanently together when the support posts are compressed together as shown in Figs. HA and 1 IB.
- the support post and the structures thereon are aligned along axes disposed at an angle of 45 degrees to the primary axes of the sub-unit.
- the support post and it's locking components will be aligned parallel and normal to that diagonal line (and not parallel or normal to the edges of the unit per se,
- each pair of structures on a sub-unit which engage with, the same pair of structures on an opposed sub-unit are disposed to lie (i) on either side of the major (comer-to-corner) diagonal of the sub-unit, (H) equidistant from that diagonal, and ( ⁇ i) the line connecting the pair of structures is perpendicular to that major diagonal.
- a plan view of a detail at the centre of a sub-unit is shown from above the top face (or below the bottom face).
- the top/bottom face of a sub-unit is of course not a planar face but has a depth, and therefore has an outer surface 72 visible from the exterior of the., finished unit, and an inner surface 74 which is mostly hidden below the outer surface and exposed only to the interior of the unit.
- the circular cut-out structure, indicated generally at 70 has a perimeter 76 at which the outer surface terminates and within which the inner surface can be seen.
- a series of concentric circular perforations 78a, 78b, 78c, 7Sd are provided in the inner surface.
- Four primary radial ribs 82 extend diagonally outwards from the circumference of the innermost wall 80a to the perimeter 76, in the primary diagonal directions of the face (from the centre to each corner).
- Eight secondary radial ribs 84 extend outwards from the circumference of the second wall 80b to Hie perimeter 76.
- Each of the concentric perforations 78a-78d allows a jig saw or other cutting implement to remove a circular area of the inner surface 74.
- the portion of the ribs 82,84 between the chosen perforation and the immediately surrounding wall can also be cut away to result in a cylindrical receiver with a lower annular lip, and an access pipe can be inserted into this receiver to enable inspection devices to be lowered through the access pipe into the interior of a unit
- the outermost wall 80c therefore defines a sylindiical receiving space extending between the outer surface 72 and the shelf or Hp 86 provided on the inner surface 74.
- a pipe 88 (shown in dotted outline) can thus be inserted into the cylindrical space defined within the interior of the wall 80c to rest on shelf 86 and provide a permanent access tube above the selected cell. Because the circualr cut-out structure 70 is provided over the centre of the sub-unit, if a camera or other optical device inserted down through pipe 88 can look along each of the four cardinal directions (towards the top, bottom, left and right of the drawing figure) so that there is an unobstructed view alone the passages defined between each of the corner pillars.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Revetment (AREA)
- Sewage (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002596587A CA2596587A1 (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system |
CN2006800039611A CN101115888B (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system |
US11/815,075 US7621695B2 (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system |
EA200701621A EA011474B1 (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system |
EP06840904A EP1863977A1 (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system |
BRPI0607116-3A BRPI0607116A2 (en) | 2005-02-04 | 2006-02-06 | subsurface stormwater system |
MX2007009327A MX2007009327A (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05100810.0 | 2005-02-04 | ||
EP05100810 | 2005-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007054130A1 true WO2007054130A1 (en) | 2007-05-18 |
Family
ID=36177347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/001062 WO2007054130A1 (en) | 2005-02-04 | 2006-02-06 | Subsurface stormwater system |
Country Status (8)
Country | Link |
---|---|
US (1) | US7621695B2 (en) |
EP (1) | EP1863977A1 (en) |
CN (1) | CN101115888B (en) |
BR (1) | BRPI0607116A2 (en) |
CA (1) | CA2596587A1 (en) |
EA (1) | EA011474B1 (en) |
MX (1) | MX2007009327A (en) |
WO (1) | WO2007054130A1 (en) |
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-
2006
- 2006-02-06 WO PCT/EP2006/001062 patent/WO2007054130A1/en active Application Filing
- 2006-02-06 US US11/815,075 patent/US7621695B2/en not_active Expired - Fee Related
- 2006-02-06 CN CN2006800039611A patent/CN101115888B/en not_active Expired - Fee Related
- 2006-02-06 EA EA200701621A patent/EA011474B1/en not_active IP Right Cessation
- 2006-02-06 MX MX2007009327A patent/MX2007009327A/en active IP Right Grant
- 2006-02-06 BR BRPI0607116-3A patent/BRPI0607116A2/en not_active IP Right Cessation
- 2006-02-06 EP EP06840904A patent/EP1863977A1/en not_active Withdrawn
- 2006-02-06 CA CA002596587A patent/CA2596587A1/en not_active Abandoned
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US3280569A (en) * | 1964-02-11 | 1966-10-25 | Permagroin Company Inc | Groin |
EP1036638A1 (en) * | 1997-07-17 | 2000-09-20 | Rita Engineering Consultants Co., Ltd. | Concrete block, joint for the same, and structure of concrete blocks |
DE29924050U1 (en) * | 1998-03-18 | 2001-10-25 | Wavin B.V., Zwolle | Irrigation and / or drainage box |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009140295A1 (en) * | 2008-05-12 | 2009-11-19 | Cudo Stormwater Products, Inc. | Modular underground water management systems |
WO2011042415A1 (en) * | 2009-10-05 | 2011-04-14 | Aco Severin Ahlmann Gmbh & Co. Kg | Drainage body |
ITBO20110633A1 (en) * | 2011-11-07 | 2013-05-08 | Gds S R L | INFILTRATION BLOCK FOR AN INFILTRATION SYSTEM FOR THE DISPOSAL OF RAINWATER. |
GB2505503A (en) * | 2012-09-03 | 2014-03-05 | Polypipe Ltd | Subterranean drainage structure |
GB2505503B (en) * | 2012-09-03 | 2017-04-12 | Polypipe Ltd | Subterranean drainage structure and base unit therefor |
WO2016042140A1 (en) * | 2014-09-19 | 2016-03-24 | Wavin B.V. | A plastic infiltration unit, a system comprising a plurality of plastic infiltration units |
NL1040958B1 (en) * | 2014-09-19 | 2016-09-29 | Wavin Bv | A plastic infiltration unit, a system comprising a plurality of plastic infiltration units. |
US10132069B2 (en) | 2014-09-19 | 2018-11-20 | Wavin B.V. | Plastic infiltration unit, a system comprising a plurality of plastic infiltration units |
RU2673160C2 (en) * | 2014-09-19 | 2018-11-22 | Вавин Б.В. | Plastic infiltration block, system containing a lot of plastic infiltration blocks |
US10808390B2 (en) | 2014-09-19 | 2020-10-20 | Wavin B.V. | Plastic infiltration unit and system |
ITUB20154693A1 (en) * | 2015-10-15 | 2017-04-15 | Pircher S R L | STRUCTURE OF PERDENT WELL |
Also Published As
Publication number | Publication date |
---|---|
CA2596587A1 (en) | 2007-05-18 |
BRPI0607116A2 (en) | 2010-03-23 |
CN101115888A (en) | 2008-01-30 |
US20080166182A1 (en) | 2008-07-10 |
EP1863977A1 (en) | 2007-12-12 |
EA200701621A1 (en) | 2008-02-28 |
EA011474B1 (en) | 2009-04-28 |
US7621695B2 (en) | 2009-11-24 |
CN101115888B (en) | 2010-09-29 |
MX2007009327A (en) | 2007-11-14 |
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