EP1522638A1 - Dämpfender Regenwasserbehälter und Verfahren zur Herstellung des Regenwasserbehälters - Google Patents

Dämpfender Regenwasserbehälter und Verfahren zur Herstellung des Regenwasserbehälters Download PDF

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Publication number
EP1522638A1
EP1522638A1 EP04023786A EP04023786A EP1522638A1 EP 1522638 A1 EP1522638 A1 EP 1522638A1 EP 04023786 A EP04023786 A EP 04023786A EP 04023786 A EP04023786 A EP 04023786A EP 1522638 A1 EP1522638 A1 EP 1522638A1
Authority
EP
European Patent Office
Prior art keywords
wall
tank
stormwater
attenuation tank
units
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04023786A
Other languages
English (en)
French (fr)
Other versions
EP1522638B1 (de
Inventor
Bernard Kennedy
William Rooney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carlow Precast Concrete Engineering
Original Assignee
Carlow Precast Tanks Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Carlow Precast Tanks Ltd filed Critical Carlow Precast Tanks Ltd
Publication of EP1522638A1 publication Critical patent/EP1522638A1/de
Application granted granted Critical
Publication of EP1522638B1 publication Critical patent/EP1522638B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02—Containers for fluids or gases; Supports therefor
    • E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material

Definitions

  • the present invention is concerned with a stormwater attenuation tank, and a method for manufacturing same, the tank being designed for use as a buffering device to collect excess stormwater within a residential or industrial development for slow release to a municipal sewer or the like. Used in combination with a flow control device or the like, the loading on the municipal sewer is controlled, thereby reducing the possibility of flooding in vulnerable areas during periods of exceptional rainfall.
  • Soak-away chambers are suitable in areas where flash flooding occurs, but where there is scope for in-ground drainage after the flooding.
  • Multiple tank assemblies are suitable where the attenuation volumes are relatively small, up to approximately 200 cubic meters, or where there is a desire to attenuate on a unit by unit basis in an industrial or residential development.
  • Cast in situ concrete tanks are also possible, but are rarely used, as the construction time is substantially longer and more expensive than the above systems.
  • the present invention therefore provides, in its first aspect, a stormwater attenuation tank comprising an inlet through which to channel stormwater; an outlet adapted for fluid communication with a sewerage system; a floor; a modular perimeter wall; and a roof.
  • the perimeter wall is comprised of a plurality of preformed wall units.
  • the tank comprises at least one internal wall.
  • the at least one internal wall stands on the floor.
  • each wall unit is mounted, in use, on at least one foundation pad in order to ensure the accurate placement of each wall unit.
  • At least one locating member projects from each foundation pad for operative engagement with a corresponding recess in the respective wall unit.
  • the floor of the tank is cast in place.
  • each wall unit includes one or more reinforcing members projecting from a base of the wall unit, which reinforcing members are embedded, in use, in the floor.
  • adjacent wall units are sealed by means of a hydrophilic barrier.
  • each wall unit is recessed such that adjacent wall units define a cavity for receiving the hydrophilic barrier.
  • each cavity is filled, in use, with concrete such as to secure the respective hydrophilic barrier in place.
  • the roof is formed from preformed roof units.
  • the roof is covered with a layer of concrete which seals both adjacent roof units, and adjacent roof units and wall units.
  • the floor has a fall of between 1:100 and 1:600 along the length thereof.
  • a method of manufacturing an attenuation tank comprising the steps of locating a plurality of preformed wall units in end to end alignment on a bed to form a perimeter wall; pouring a concrete floor onto the bed within the perimeter wall; and mounting a roof across the perimeter wall to substantially seal the tank.
  • the method comprises the further steps of forming a plurality of foundation pads on the bed; and seating the wall units onto the foundation pads in order to ensure the accurate placement of each wall unit.
  • the method comprises the further step of providing at least one locating member on each foundation pad, for operative engagement with a corresponding recess in each wall unit.
  • the method comprisies providing reinforcing members projecting from a base of each wall unit, which reinforcing members are embedded in the floor of the tank when poured.
  • the method comprises the step of sealing adjacent wall units by means of a hydrophilic barrier.
  • the method comprises providing at least one internal wall to give additional support to the roof.
  • the method comprises standing the at least one internal wall on the floor.
  • the term "preformed” is intended to mean an object or component has been manufactured, in particular off site, prior to the inclusion thereof as an integral component of some larger system, and is particularly intended to refer to the process of precasting concrete components off site, such components having substantially or fully cured prior to inclusion in a tank according to the present invention.
  • the term "stand” is intended to mean the act of having one component located or positioned on top of another component or surface, without there being any physical join or interengagement being required or formed between the two components, such that continuity of the abutting surfaces of the two components is preserved.
  • the term "foundation pad” is intended to mean a support or abutment which is fixed in place, and onto which one or more components may be located in such a manner that the location and orientation of said components is guaranteed within certain acceptable tolerances.
  • locating member is intended to mean an element which co-operates with another component or portion thereof, in order to guide and fix the location of said component.
  • an attenuation tank which in use is operable to collect and store excess stormwater within a residential or industrial development, or at any other desired location, for controlled release to a municipal sewer (not shown) or the like, at a rate which avoids overloading of the municipal sewer.
  • the tank 10 is thus connected between the conventional drainage system (not shown) of the development/location in question, and the respective municipal sewer, such that the tank 10 acts as a buffer to prevent overloading of the municipal sewer.
  • the tank 10 is thus provided with a conventional inlet (not shown) at any suitable location in the tank 10, which in use is in fluid communication with the drainage system, and a conventional outlet (not shown), again at any suitable location in the tank 10, which in use is in fluid communication with the municipal sewer.
  • the tank 10 further includes some form of proprietary flow control means (not shown) such as an orifice plate (not shown) or vortex generator (not shown), preferably located between the tank 10 and the municipal sewer, in order to control the flow of the stormwater from the tank 10 into the municipal sewer.
  • proprietary flow control means such as an orifice plate (not shown) or vortex generator (not shown)
  • the tank 10 may be connected to both the residential or industrial development, and the sewer, by conventional means (not shown), such as conventional concrete sewerage pipes (not shown) or the like.
  • the flow control means should be selected such as to discharge stormwater from the tank 10 at a rate which is suitable for the particular municipal sewer into which the tank 10 discharges.
  • the flow control means will have to be selected or adapted to suit each location at which the tank 10 is installed.
  • the tank 10 may be provided with a single inlet/outlet (not shown), with the tank 10 therefore being connected in parallel to the conventional drainage system (not shown) leading to the municipal sewer.
  • the tank 10 will then flow back through the inlet/outlet (not shown) thereof, and through the drainage system to the municipal sewer.
  • the internal diameter of the pipework (not shown) leading from the inlet/outlet will therefore act as the flow control means (not shown) mentioned above.
  • the conventional practice will be to locate the tank 10 within a subterranean excavation (not shown), which will also facilitate gravitational drainage into the tank 10, thereby avoiding the need for pumps (not shown) or the like.
  • the tank 10 is not however limited to use in such subterranean excavations, and could be located above ground, or partially submerged, depending on the conditions prevailing at the site (not shown) where the tank 10 is to be installed.
  • the tank 10 comprises a modular perimeter wall 14, consisting of a plurality of wall units 16 in end to end alignment, and a floor 18 extending between the perimeter wall 14.
  • the tank 10 comprises a roof 20 which consists of an array of roof units 22 in side by side engagement.
  • a line of internal walls 24 is also provided, in order to support the roof units 22.
  • the wall units 16, roof units 22, and internal walls 24 are all precast offsite, to exact tolerances, thereby dramatically reducing the length of time taken to manufacture the tank 10 on site.
  • stormwater runoff tanks (not shown), when manufactured from concrete, would be cast as a monolithic structure on site.
  • precast components require the accurate alignment of adjacent wall units 16, both to facilitate the production of a seal therebetween, as will be described in detail hereinafter, in addition to the accurate and secure placement of the roof units 22 onto the wall units 16.
  • This requirement therefore increases the length of time required to prepare the site before the wall units 16 may be located. This is particularly true where a bed 26, on which the tank 10 is to be located, has not been laid level, or is not to a high enough standard, for alignment of the wall units 16.
  • This problem is compounded by the fact that the tank 10 should have a fall of between 1 in 100 and 1 in 600, preferably 1 in 300, along the length thereof, in order to effect the gravitational feed of stormwater therefrom, and thus the bed 26 should have an equivalent fall therealong.
  • the present invention therefore employs a unique system to reduce the manufacturing time of the tank 10, while ensuring the accurate positioning and relative alignment of the various components thereof.
  • an array of foundation pads 28 are set into the bed 26, one of which is illustrated in Figure 4, to follow the proposed line of the perimeter wall 14.
  • the foundation pads 28 then serve as supports or feet onto which the wall units 16 are seated, ensuring the correct location and alignment of the wall units 16, which will not require any further alignment once seated in place.
  • a conventional laser level (not shown) to set out the height at which the plurality of foundation pads 28 should be located.
  • the laser level should be set as close as possible to the centre of the site on which the tank 10 is to be built. Once set up, preferably on a tripod (not shown) or the like, the laser level should not be moved, both to save time and to avoid potential error. Once secured, the laser level is switched on, following which it will effect self levelling over a couple of seconds. The rotate button is then pressed to rotate the head of the laser level, which thus results in a level plane being identifiable all around the site.
  • the conventional arrangement of a laser detector (not shown) mounted on a shaft is then set to indicate the required excavation depth at which to provide the foundation pads 28, which are preferably 150mm deep, below the underside level of the wall units 16.
  • the laser level (not shown) must be set up to incorporate the correct drop over the length of the tank 10. This is achieved by tilting the axis of the laser level about which the head rotates, such that the plane indicated by the laser level is suitably tilted with respect to the horizontal.
  • the angle at which the head is tilted can be varied in order to give different degrees of fall, in order to suit the particular requirements of the tank 10.
  • a mini digger (not shown) or the like is initially used to create a small excavation in the bed 26, at the plurality of pre-determined locations.
  • One of the foundation pads 28 is then constructed in each excavation, to the level of the proposed underside of the perimeter wall 14, as indicated by the laser level, or alternatively by any other suitable means.
  • a steel mould (not shown) or the like is preferably used to ensure the accurate construction of each foundation pad 28.
  • the upper surface of each foundation pad 28 is checked using a conventional spirit level (not shown) or the like. Accurate positioning of the foundation pads 28 is essential, although it will be appreciated that this work takes far less time than trying to level each wall unit 16, once seated on the bed 26, particularly in view of the substantial weight and size of each wall unit 16.
  • each wall unit 16 is seated on a pair of the foundation pads 28, one preferably being located at or adjacent either end of the respective wall unit 16. It will be understood that more or less than a pair of the foundation pads 28 could be provided under each wall unit 16, although the use of a single foundation pad 28 would be unlikely to give sufficient support to each wall unit 16.
  • each foundation pad 28 has been poured, and while the concrete is still wet, a pair of locating members in the form of locating pins 30 are inserted, vertically, into the foundation pad 28, which locating pins 30 will coincide with corresponding receiving members in the form of recesses (not shown) on the underside of each wall unit 16, allowing the wall units 16 to be positioned accurately and in any order, without further reference to measurement.
  • a template (not shown) is preferably used to mark-out the position of the locating pins 30 on each foundation pad 28.
  • the foundation pads 28, with the locating pins 30 therein, are preferably allowed to set overnight, in order to ensure that the locating pins 30 will not be knocked out of alignment during positioning of the wall units 16.
  • locating pins could be fixed to the underside of the wall units 16, with corresponding recesses (not shown) being provided in the foundation pads 28. This arrangement is however far less practical, as the locating pins (not shown) would prevent the wall units 16 from being stored in an upright position, as the locating pins (not shown) would likely be damaged or bent out of position due to the weight of the wall unit 16 bearing down on same. It will also be understood that any other suitable arrangement could be used in place of the locating pins 30 and corresponding recesses (not shown) in order to enable the wall units 16 to be quickly and accurately positioned and retained on the foundation pads 28.
  • the plurality of wall units 16 are dropped into place onto the foundation pads 28, with the locating pins 30 ensuring the exact positioning of each wall unit 16.
  • the top face of the foundation pad 28 Prior to dropping each wall unit 16 into place on the respective foundation pad 28, the top face of the foundation pad 28 should be cleared of any debris such as stones or the like, as any such debris could affect the final plumb and level of the wall unit 16.
  • the surface of the bed 26 between each of the foundation pads 28 is filled and brought to level either by scraping away excess material or by filling using any suitable material, for example stone or sand.
  • the floor 18 is preferably 200mm thick, and thus conventional steel fibre reinforcement is normally adequate for reinforcing the floor 18.
  • the strength of the floor 18 is preferably supplemented with conventional steel mesh reinforcing elements (not shown) or the like, placed on the bed 26, around which the floor will be poured in order to encase same, thus considerably increasing the strength of the floor 18.
  • each wall unit 16 has a foot 32 from which projects, substantially horizontally, a plurality of reinforcing members 34.
  • the reinforcing members 34 are cast into the wall units 16 during production.
  • the floor 18 is then poured level with the feet 32, thereby surrounding the reinforcing members 34, which therefore form a solid connection between the perimeter wall 14 and the floor 18.
  • the internal walls 24 additionally provide a simple yet effective restraint to upward bending of the floor 18, in particular during periods when the tank 10 is empty and there is a high level of external groundwater.
  • the enlarged base or foot of each internal wall 24 reduces the effective span of the floor 18.
  • the internal walls 24 could be omitted.
  • additional lines of internal walls 24 would preferably be included. This enables the roof units 22 to be fixed in size, regardless of the width of the tank 10, again reducing the time taken to manufacture the tank 10.
  • each wall unit 16 is provided with a recess 36, projecting into which, from the wall unit 16, is a reinforcing web 38, which is cast into the wall unit 16 during manufacture.
  • conventional shuttering (not shown) is seated against the respective pair of recesses 36, and concrete then poured into same, to form a seal.
  • the shuttering (not shown) need only extend to the foot 32 of each wall unit 16.
  • a hydrophilic strip (not shown), or equivalent, is provided along the edge of each wall unit 16, within the recess 36.
  • the reinforcing web 38 therefore serves to aid in retaining the concrete within the recess 38, allowing the hydrophilic strip to function.
  • the hydrophilic strips (not shown) are attached to all critical interfaces during the offsite production of the wall units 16, again saving time onsite.
  • each wall unit 16 is provided with a shoulder 42 at the top thereof, onto which the edge of each roof unit 22 sits.
  • the wall units 16 each taper upwardly away from the shoulder 42, to further aid in the easy placement of the roof units 22.
  • the modular nature of the tank 10, in particular the use of the internal walls 24, enables a single size of roof unit 22 to be used, regardless of the overall dimensions of the tank 10. This also allows the roof units 22 to be positioned in any order, further reducing the time taken to manufacture the tank 10.
  • each wall unit 16 When all of the roof units 22 are in place, a layer of screed 44 or the like is poured over the roof 20 to seal same.
  • the tapered profile of the top of each wall unit 16 also allows the screed 44 to seep downwardly between the edge of each roof unit 22 and the corresponding wall unit 16, thereby forming a water tight seal between the roof units 22 and the wall units 16, effectively performing two jobs at once.
  • tank 10 is ready to be connected to the drain system (not shown) of the business or residential development in question, and to the municipal sewer (not shown) serving the development.
  • the present invention provides a discrete, high volume buffer to prevent flooding of sewers following the drainage of storm water from business and residential developments or the like.
  • the tank 10 can be manufactured in relatively little time and yet to very high tolerances.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sewage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
EP04023786.9A 2003-10-06 2004-10-06 Dämpfender Regenwasserbehälter und Verfahren zur Herstellung des Regenwasserbehälters Expired - Lifetime EP1522638B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE20030739 2003-10-06
IE20030739 2003-10-06

Publications (2)

Publication Number Publication Date
EP1522638A1 true EP1522638A1 (de) 2005-04-13
EP1522638B1 EP1522638B1 (de) 2017-05-03

Family

ID=34308028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04023786.9A Expired - Lifetime EP1522638B1 (de) 2003-10-06 2004-10-06 Dämpfender Regenwasserbehälter und Verfahren zur Herstellung des Regenwasserbehälters

Country Status (5)

Country Link
EP (1) EP1522638B1 (de)
DK (1) DK1522638T3 (de)
ES (1) ES2638564T3 (de)
IE (1) IES20040676A2 (de)
PT (1) PT1522638T (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8113740B2 (en) 2008-02-06 2012-02-14 Oldcastle Precast, Inc. Method and apparatus for capturing, storing, and distributing storm water
US8985897B2 (en) 2008-02-06 2015-03-24 Oldcastle Precast, Inc. Method and apparatus for capturing, storing, and distributing storm water
US9546044B2 (en) 2008-02-06 2017-01-17 Oldcastle Precast, Inc. Method and apparatus for capturing, storing, and distributing storm water
US10584471B2 (en) 2017-06-15 2020-03-10 James Bradford Boulton Integrated retaining wall and fluid collection system
WO2022245437A1 (en) * 2021-05-21 2022-11-24 Schorstein Alexander B Storm water and traffic collector box culvert

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1807296A (en) * 1928-07-16 1931-05-26 John G Laubheimer Septic tank
GB560861A (en) * 1942-02-09 1944-04-25 Charles Aquila Vincent Smith Precast reinforced concrete tanks or containers for liquids or finely divided materials
US3429473A (en) * 1966-07-05 1969-02-25 A D L Cement Products Inc Precast segment liquid storage tank
FR2658552A1 (fr) * 1990-02-20 1991-08-23 Comminges Sarl Betons Reservoir en beton arme a elements prefabriques.
US5248219A (en) * 1991-03-20 1993-09-28 Enviroland, Inc. Sewage tank system and method of construction
US20020020131A1 (en) * 2000-08-16 2002-02-21 Akihiko Hongyo Method of assembly of reinforced concrete vessel by prefabricated panel type member at construction site
EP1223248A1 (de) * 2001-01-15 2002-07-17 Cementation Foundations Skanska Limited Dichtung für Fundamente
FR2829517A1 (fr) * 2001-09-11 2003-03-14 Maison Bleue Soc Nouv Procede de pose de mur vertical prefabrique sur un radier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9108079U1 (de) * 1991-07-01 1991-12-05 Neddens, Herbert, 3130 Lüchow Abwassersammelbehälter mit einer Vorrichtung zum Entleeren

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1807296A (en) * 1928-07-16 1931-05-26 John G Laubheimer Septic tank
GB560861A (en) * 1942-02-09 1944-04-25 Charles Aquila Vincent Smith Precast reinforced concrete tanks or containers for liquids or finely divided materials
US3429473A (en) * 1966-07-05 1969-02-25 A D L Cement Products Inc Precast segment liquid storage tank
FR2658552A1 (fr) * 1990-02-20 1991-08-23 Comminges Sarl Betons Reservoir en beton arme a elements prefabriques.
US5248219A (en) * 1991-03-20 1993-09-28 Enviroland, Inc. Sewage tank system and method of construction
US20020020131A1 (en) * 2000-08-16 2002-02-21 Akihiko Hongyo Method of assembly of reinforced concrete vessel by prefabricated panel type member at construction site
EP1223248A1 (de) * 2001-01-15 2002-07-17 Cementation Foundations Skanska Limited Dichtung für Fundamente
FR2829517A1 (fr) * 2001-09-11 2003-03-14 Maison Bleue Soc Nouv Procede de pose de mur vertical prefabrique sur un radier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8113740B2 (en) 2008-02-06 2012-02-14 Oldcastle Precast, Inc. Method and apparatus for capturing, storing, and distributing storm water
US8985897B2 (en) 2008-02-06 2015-03-24 Oldcastle Precast, Inc. Method and apparatus for capturing, storing, and distributing storm water
US9546044B2 (en) 2008-02-06 2017-01-17 Oldcastle Precast, Inc. Method and apparatus for capturing, storing, and distributing storm water
US10584471B2 (en) 2017-06-15 2020-03-10 James Bradford Boulton Integrated retaining wall and fluid collection system
WO2022245437A1 (en) * 2021-05-21 2022-11-24 Schorstein Alexander B Storm water and traffic collector box culvert
US11566411B2 (en) 2021-05-21 2023-01-31 Alexander B. Schorstein Storm water and traffic collector box culvert

Also Published As

Publication number Publication date
ES2638564T3 (es) 2017-10-23
PT1522638T (pt) 2017-09-04
EP1522638B1 (de) 2017-05-03
IES20040676A2 (en) 2005-05-04
DK1522638T3 (en) 2017-08-28

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