EP0903445B1 - Drainage grating for liquids and associated support - Google Patents

Drainage grating for liquids and associated support Download PDF

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Publication number
EP0903445B1
EP0903445B1 EP98830530A EP98830530A EP0903445B1 EP 0903445 B1 EP0903445 B1 EP 0903445B1 EP 98830530 A EP98830530 A EP 98830530A EP 98830530 A EP98830530 A EP 98830530A EP 0903445 B1 EP0903445 B1 EP 0903445B1
Authority
EP
European Patent Office
Prior art keywords
grating
support element
holes
channel
drainage
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.)
Expired - Lifetime
Application number
EP98830530A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0903445A1 (en
Inventor
Pier Francesco Stabellini
Sandro Sgarbi
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.)
Compasso Srl
Original Assignee
Compasso Srl
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
Application filed by Compasso Srl filed Critical Compasso Srl
Publication of EP0903445A1 publication Critical patent/EP0903445A1/en
Application granted granted Critical
Publication of EP0903445B1 publication Critical patent/EP0903445B1/en
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
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings

Definitions

  • the present invention relates to a modular drainage grating for liquids in general, and in particular for meteoric water and backflow water, to be installed, in association with a channel support element, in ground surfaces which are subject to a high density of traffic and have a high load-bearing capacity, so as to collect these liquids by means of percolation and remove them by conveying them away to a known evacuation system.
  • drainage gratings associated with a corresponding support element are known, said gratings consisting of longitudinally extending modular elements which are intended to be installed in series with one another so as to form a single functional grating of unlimited length.
  • a grating associated with a support element is described in document EP-A-0 668 408.
  • These known modular elements consist substantially of a strong upper grating made of metallic material such as, for example, nodular cast iron or steel, and having an elongated rectangular shape provided with four holes on the external perimeter in the vicinity of the ends, intended for engaging the grating by means of bolts in corresponding fixing seats formed in the upper part of the channel element forming the grating support.
  • this step in the region of a joint forms an interruption in the bottom seal of the channel and therefore results in undesirable seepage of liquid into the subsoil.
  • Said weaknesses are caused by the varying pressure exerted, in the region of a joint, by the traffic on the subsurface for laying of the grating support channel, these being associated with inevitable discontinuities present in the ground.
  • An object of the present invention is to provide a modular drainage grating for liquids, and in particular for meteoric water and backflow water, with associated channel support element, which does not produce any discontinuity at the joint between one grating and the next one even in the case of varying sinking of one support element with respect to the adjacent one. Another object is to obtain a smaller and better distributed pressure on the subsurface for laying of the channel, therefore partly eliminating the main cause of sinking of a support element with respect to another element adjacent thereto.
  • a further object is to provide a grating with associated channel support element which allows laying using the known technology employed hitherto, therefore leaving the design engineer the possibility of choosing whether to use a grating of the traditional type or a grating of the new type.
  • 1 denotes a water drainage grating consisting of a plate of considerable thickness with an elongated rectangular shape having, formed in it, a uniform plurality of through-slits 2 and provided at its corners with four through-holes 3, 3'; 4, 4' formed in a niche which opens outwards at the top.
  • D denotes the value of the longitudinal distance between the holes 3 and 3', or 4 and 4', on the grating 1.
  • a channel support element which is made, for example, of a cement mix with suitable known additives, i.e. synthetic resin to which inert materials of a known type and grain size have been added, and which has a substantially U-shaped configuration, an L-shaped metal section 5 for the bearing support of the grating 1 being provided at the top of each of the two walls 8 and 9 of the element 10 and four vertical threaded holes 6, 6'; 7, 7' being formed on this section.
  • the metal section 5 is manufactured separately and laid integrally with the channel support element 10 by means of cemented side flanges.
  • 11 denotes four bolts which are intended to engage respectively inside end threaded holes 6, 6', or in the region of the central part 7, 7', depending on the method used for mounting the grating 1.
  • Figs. 3 and 4 illustrate, in fact, a first method of mounting the grating 1 on the support element 10, using a traditional technique which involves each grating coinciding exactly with the associated support element 10, i.e. in alignment.
  • the bolts 11 engage respectively inside the holes 4, 4' of the grating 1 and the threaded holes 6, 6' of the support element 10, it being envisaged in the example of application that the length E of each support element 10 is equal (subject to minor tolerances) to the length G of each grating 1.
  • the intermediate threaded holes 7, 7' on each wall 8, 9 of the support element 10 will therefore not be used, while the holes 6, 6', which are located at a distance A from each end of the support element 10, equal to the distance of the holes 3,3'; 4,4' from the end of the grating 1, will be used.
  • Figs. 7 and 8 show, respectively, a plan view and an elevation view of a second method of mounting the grating 1 on the support element 10, where the grating 1 is staggered lengthwise with respect to the support element by an amount S equal to half of G.
  • each module 10 This is obtained by forming in the central part of each module 10, on the walls 8 and 9, a pair of vertical threaded holes 7, 7' which are located at a distance D/2 from the ends of each support element 10, i.e. half the distance D, and engaging the holes 3,3'; 4,4' of the grating 1 with the corresponding threaded holes 7, 7' .
  • These holes 7, 7' are positioned symmetrically with respect to the middle of the support element 10.
  • peripheral threaded holes 6, 6' at the ends of the element 10 are not used.
  • Fig. 11 illustrates the behaviour of the grating 1 with associated support element 10 which is laid in a continuous series of undefined length, in the event of sinking of a support element, shown in the centre of Fig. 11. It can be seen that sinking of the support element 10 does not affect the continuity of the grating 1, lowering of which is even less than lowering of the support element.
  • the bearing force of the grating 1 on the ground is moreover better distributed since it is applied to half of each support element 10.
  • Figs. 16 and 17 show two other examples of application in which the grating module G is respectively half and one third of the module E of the channel support element. In these cases also, two elements 10' with a length S equal to half the grating module G are laid at the start and at the end of the series of support elements 10.
  • the distance, from the end of the support element 10, of the holes 7, 7' arranged on the support element 10 to be fixed to the grating 1 is equal to half (D/2) the longitudinal distance D between the holes 3 and 3'; 4 and 4' of the grating.
  • the invention may be subject to variations of application for obtaining lengthwise staggering of the grating 1 and the support element 10; for example, this staggering may be obtained by inserting at the start and at the end of the series of gratings a shorter grating having a length S equal to half the grating module G.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Sewage (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Optical Integrated Circuits (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Centrifugal Separators (AREA)
EP98830530A 1997-09-19 1998-09-10 Drainage grating for liquids and associated support Expired - Lifetime EP0903445B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE970062 1997-09-19
IT97RE000062A IT1294947B1 (it) 1997-09-19 1997-09-19 Griglia di percolazione per liquidi in genere, e relativo supporto

Publications (2)

Publication Number Publication Date
EP0903445A1 EP0903445A1 (en) 1999-03-24
EP0903445B1 true EP0903445B1 (en) 2003-11-19

Family

ID=11399100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830530A Expired - Lifetime EP0903445B1 (en) 1997-09-19 1998-09-10 Drainage grating for liquids and associated support

Country Status (4)

Country Link
EP (1) EP0903445B1 (it)
AT (1) ATE254702T1 (it)
DE (1) DE69819835D1 (it)
IT (1) IT1294947B1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2020103279A4 (en) * 2020-11-06 2021-01-14 Reln Pty Ltd Drainage Channel and Grate Assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386020A (en) * 1943-05-17 1945-10-02 Frederick K Wendelken Sectional surface drain conduit
FR2652839B1 (fr) * 1989-10-05 1993-11-26 Nicoll Sa Raccords Plastiques Caniveau a grille scellable dans le sol et son procede de mise en óoeuvre.
FR2716217B1 (fr) * 1994-02-16 1996-05-03 Prefaest Sa Caniveau et élément de caniveau immobilisable.

Also Published As

Publication number Publication date
DE69819835D1 (de) 2003-12-24
IT1294947B1 (it) 1999-04-23
ATE254702T1 (de) 2003-12-15
ITRE970062A0 (it) 1997-09-19
ITRE970062A1 (it) 1999-03-19
EP0903445A1 (en) 1999-03-24

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