METHOD FOR MANUFACTURING A READY-TO-USE CATCH-PIT, AND SUCH A CATCH-PIT

Abstract: The invention relates to a method of manufacturing a ready-for-use catch pit comprising a sump, a wall element (1) placed on the sump, and placed thereon a cone provided with a manhole, wherein the sump or the wall element (1) is provided with at least a cottering or sleeve joint (10) suitable for the connection of a sewage drain, when the wall element is being poured, a removable profile component is incorporated in the wall element (1). After the wall element (1) is set, the profile component is removed, producing a recess in the wall element (1) which narrows in steps toward the interior, defining a sideways extending rim. At least on the sideways extending rim of the recess a layer of adhesive is applied. The cottering or sleeve joint (10) is placed onto the sideways extending rim of the recess.

Description: Method for manufacturing a ready-to-use catch-pit, and such a catch-pit The invention relates to a method of manufacturing a ready-for-use catch pit comprising a sump, a wall element placed on the sump, and placed thereon a cone provided with a manhole, wherein the sump and/or the wall element is provided with at least a cottering or sleeve joint suitable for the connection of a sewage drain. The invention also relates to a catch pit manufactured by such a method. A catch pit of this kind, as well as said method of its manufacture, are known in practice. Said prior art is explained in Fig. 1. The method of manufacturing a catch pit with a diameter of 1000 mm is explained by means of Fig. 1, which catch pit is provided with a sleeve having a diameter of 500 mm. Fig. 1.1 shows a top view and cross-sectional side view of a wall element 1 intended for a catch pit. Fig. 1.2 shows the situation wherein the wall element 1 is provided with a recess 2. In and around the recess 2 an attachment 3 , an insert piece 4 , and a pipe element 5 is provided, as shown in Fig. 1.3 in a cross-sectional side view and top view. Fig. 1.4 once again shows in cross-sectional side view and top view the assembly of the wall element 1, the attachment 3, the insert piece 4 and the pipe element 5. By way of completion and in order to con- nect the parts, they will be concreted in as indicated by arrow 6. After this operation the floor 7 is poured, see Fig. 1.5. Fig. 1.6 shows the ready catch pit. This known method entails difficult work conditions associated with the pouring of the floor 7, putting in the steel elements 3, 4 and 5 which are heavy of themselves, and in particular the necessity of using heavy concrete ribs to fit into the recesses between the wall element and the cottering or sleeve joint. The object of the invention is now to provide a method and a catch pit, the manufacture of which is greatly simplified and with which it is possible to use wall elements having much reduced wall diameters. This can be realized in the method according to the invention due to the fact that during manufacture of the catch pit, when the sump or the wall element is poured, a removable profile component is incorporated in the wall element; that after the wall element is set, the profile component is removed, producing a recess in the sump or the wall element which narrows in steps toward the interior, defining a sideways extending rim; that at least on the sideways extending rim of the recess a layer of adhesive is applied; and that the cottering or sleeve joint is placed onto the sideways extending rim of the recess . Correspondingly, the catch pit according to the invention is characterized in that the sump or the wall element is provided with a recess which narrows in steps toward the interior, defining a sideways extending rim, and that the cottering or sleeve joint is placed onto the sideways extending rim of the recess. The invention will now be explained in more detail with reference to the drawing, in which Fig. 1 shows the method and catch pit according to the state of the art; and Fig. 2 shows the method and catch pit according to the invention. With regard to the description of the state of the art as shown in Fig. 1, reference is made to the above. Fig. 2 shows under Fig. 2.1 a cross-sectional top view of a wall element 1 for a catch pit, in which during pouring of the wall element, a steel ring profile with shrinkage core 8 was provided, which in Fig. 2.1 is shown in the removed state. By removing this profile element 8, a recess 2 is created in the wall element 1. Through the form of the profile element 8, the recess 2 is provided with a recess which narrows in steps having a sideways extending rim 9. A separate fitting piece, forming the cottering or sleeve joint, has to be attached in the recess 2 onto the sideways extending rim 9 to provide the finished catch pit. Fig. 2.2 shows a suitable cottering element from different views, namely starting at the top left, a side view, and from there clockwise a view as intended for placing onto the sideways extending rim 9 of the wall element 1, a horizontal cross section and a vertical cross section. Fig. 2.3 shows again the wall element 1 with the recess 2, in top view and cross-sectional side view, as well as the cottering element 10 that is to be inserted into the recess 2. Prior to fitting the cottering element 10 into the recess 2, a layer of adhesive is provided on the sideways extended rim 9 of the recess 2, and optionally also on the rim extending radially sideways and from the rim 9. The cottering element 10 fits into said recess and due to the adhesive bonding the integral and ready catch pit is provided as shown in Fig. 2.4. The catch pit manufactured according to the invention may be provided with a wall element 1 which is less thick than the catch pit according to the state of the art .

Claims: CLAIMS 1. A method of manufacturing a ready-for-use catch pit comprising a sump, a wall element placed on the sump, and placed thereon a cone provided with a manhole, wherein the sump or the wall element is provided with at least a cottering or sleeve joint suitable for the connection of a sewage drain, characterized in that during manufacture of the catch pit, when the sump or the wall element is poured, a removable profile component is incorporated in the wall element; - that after the wall element is set, the profile component is removed, producing a recess in the sump or the wall element which narrows in steps toward the interior, defining a sideways extending rim; that at least on the sideways extending rim of the recess a layer of adhesive is applied; and that the cottering or sleeve joint is placed onto the sideways extending rim of the recess. 2. A catch pit comprising a sump, a wall element placed on the sump, and placed thereon a cone provided with a manhole, characterized in that the wall element is provided with a recess which narrows in steps toward the interior, defining a sideways extending rim, and that the cottering or sleeve joint is placed onto the sideways extending rim of the recess. 3. A catch pit according to claim 2, characterized in that the cottering or sleeve joint is bonded with the sideways extending rim of the recess by means of adhesive. AMENDED CLAIMS [received by the International Bureau on 20 April 1998 (20.04.98); original claims 1 and 2 amended; remaining claim unchanged (1 page)] 1. A method of manufacturing a ready-for-use substantially cylindrical catch pit comprising a sump, a cylindrical wall element placed on the sump, and placed thereon a cone provided with a manhole, wherein the sump or the wall element is provided with at least a cottering or sleeve joint suitable for the connection of a sewage drain, characterized in that during manufacture of the catch pit, when the sump or the wall element is poured, a removable pro- file component is incorporated in the wall element; that after the wall element is set, the profile component is removed, producing a recess in the sump or the wall element which narrows in steps toward the interior, defining a sideways extending rim; - that at least on the sideways extending rim of the recess a layer of adhesive is applied; and that the cottering or sleeve joint is placed onto the sideways extending rim of the recess. 2. A catch pit comprising a sump, a substantially cylindrical wall element placed on the sump, and placed thereon a cone provided with a manhole, characterized in that the wall element is provided with a recess which narrows in steps toward the interior, defining a sideways extending rim, and that the cottering or sleeve joint is placed onto the sideways extending rim of the recess. 3. A catch pit according to claim 2, characterized in that the cottering or sleeve joint is bonded with the sideways extending rim of the recess by means of adhesive. STATEMENT UNDER ARTICLE 19 The amendments included in claims 1 and 2 as filed with letter of April 16, 1998, are intended to distinguish the invention further from the prior art cited in the Search Report . The prior art, which is considered of particular relevance as indicated in the Search Report, i.e. DE-A-21 50 019, DE-A-25 53 388, and DE-C-43 14 222, concern catch-pits with a rectangular cross-section. The invention is, however, concerned in providing a catch-pit with a substantially cylindrical cross-section of an appropriate premanufactured recess suitable to connect with a large diameter pipe connection.

Inventors: VAN DEN TOL JOHANNES, VAN DEN TOL, JOHANNES
Applicants: DEN TOL JOHANNES VAN, UBO ENGINEERING B V, WACO LIESBOSCH BETON B V, UBO ENGINEERING B.V., VAN DEN TOL, JOHANNES, WACO-LIESBOSCH BETON B.V.
Application year: 1997
Main classification: E03F5
IPC codes: E03F5