EP3686366B1 - Drain pipe arrangement - Google Patents

Description

The invention relates to a drainage line arrangement for use on a building, which has a floor slab and / or foundation in the surrounding subsoil, with a substantially horizontal drainage pipe in the deeper subsoil and a substantially vertical supply line to the horizontal drainage pipe, with between the vertical supply line and the horizontal Drainage pipe a long socket connection is provided in the vertically oriented line path, the vertical supply line being anchored to the base plate and / or to the foundation with a pipe clamp.

In principle, drainage line arrangements on buildings for the discharge of wastewater and / or surface / rainwater are known. The wastewater or surface water is fed into the vertical supply line via suitable connections and thus led to the horizontal drainage pipe located in the deeper subsurface. There is a connection between the vertical supply line and the horizontal drainage pipe via a bend, often a 90 ° / 87 ° bend, or composed of several bend parts (2 x 45 °). The essentially horizontal drainage pipe leads to the sewer system with a suitable slight gradient, usually via a transfer / inspection shaft.

However, it is disadvantageous that the horizontal drainage pipe lying in the deeper subsoil is subject to greater subsidence compared to the building, especially in the case of buildings founded on foundation piles. Accordingly, there is a risk that the pipe connection will be separated at the transition between the essentially vertical supply line on the building and the essentially horizontal drainage pipe due to the sagging of the horizontal drainage pipe. Improper management of the in the drainage line arrangement fluid would be a first consequence. It can also lead to washouts and major damage to the building. Sand can also be washed into the drain pipe and clog the pipe.

Because of these settlements and the problems that arise from them, the known drainage pipe arrangements have to be checked more frequently and, if the settlements are determined accordingly, the problems have to be eliminated by digging up and repositioning the pipes. This means a regular control effort and, if too large a reduction amount is determined, a considerable investment with a correspondingly strong impairment of the environment through the excavation work.

The discharge line arrangement described at the beginning is from DE 34 16 425 C1 known as a rainwater downpipe with a formation of a long socket to compensate for settlement phenomena. Corresponding line arrangements with a long sleeve that absorbs any settling movements are also, for example, from the JP 2016-169756 A and the JP 2011-219996 A known.

For the sake of completeness, reference is also made to the DE 94 00 877 U1 referenced, from which a double-chamber pipe system for rainwater collection systems is known, in which long socket connections are provided in the lines.

Furthermore, from the DE 20 2013 004 470 U1 a flexible connection bend between the downpipe and the underground pipe is known, which is supposed to compensate for stresses caused by pressure and tension on the connected pipes and to prevent the pipe connections from loosening.

From the DE 1 869 609 U a telescopically displaceable pipe system for discharging liquid waste is known, in which a preferably perpendicular center piece can be displaced axially to one another in the manner of a long sleeve over an overlapping area. Here, too, there are supposed to be settling phenomena and thus Excessive stresses on a sewer pipe when transitioning from a foundation into the ground can be avoided.

From the DE 198 11 709 A1 A standpipe for a conduit discharging precipitation is known, in the upper end of which a downpipe engages and the lower end of which opens into a ground pipe, the standpipe having an inner pipe encompassing the downpipe and a casing pipe which encloses at least the upper height area of the inner pipe on the outside. This in turn creates a telescopic long sleeve. Here, however, the focus is on the ease of connection of a precipitation standpipe with a standard ground pipe.

Furthermore, the EP 1 698 741 A2 a standpipe for connecting a rainwater downpipe with a sewer connection pipe, which has a socket section with a predetermined inner diameter, the standpipe having two connection ends and a normal pipe section between the connection ends, the outer diameter of the normal pipe section of the standpipe being smaller than the inner diameter of the socket section, the standpipe at one connection end has a plug adapter section formed integrally with the normal pipe section, which has an enlarged outside diameter compared to the outside diameter of the normal pipe section, the enlarged outside diameter approximately corresponding to the inside diameter of the socket section of the sewer connection pipe or only slightly smaller, so that a direct plug connection between the standpipe and the sewer connection pipe, the standpipe with its plug-in adapter section fits into the socket section of the sewer connection pipe can be inserted.

Next describes the DE 889 250 B a switch-on sleeve which, as a telescopic sleeve, can compensate for pipe string expansions or building subsidence.

A number of arrangements are therefore known which are intended to compensate for building settlements at the transition from sewage or rainwater downpipes to horizontal drainage pipes. The compensation takes place via corresponding long socket connections.

The object of the invention is based on an arrangement according to FIG DE 34 16 425 C1 to specify a drainage arrangement in which the possible relative movements caused by subsidence between a building and the surrounding subsoil, which are absorbed by a long socket connection, can easily be checked.

This object is achieved in that a control rod is held displaceably in the vertical longitudinal direction in or on the vertical supply line, the control rod being firmly anchored on the horizontal drainage pipe. This means that any settling movements that occur can be easily checked using the control rod. The vertical supply line is anchored to the base plate and / or the foundation with a preferably stainless pipe clamp, so that the vertical supply line, which should follow the same settlement movements as the building or its base plate or foundation, is also mechanically connected to the base plate or the foundation Foundation is connected. Correspondingly, the difference in movement between the slight settlement of the entire building with the significantly stronger settlement of the horizontal drainpipe is completely routed to the transition between the horizontal drainpipe and the vertically oriented line path in the form of the long socket.

Because the building has a floor slab in which or under which a horizontal supply line is arranged, which opens into the vertical supply line via a T-piece, the drainage line arrangement serves to drain off waste water occurring in the building. By providing a T-piece in the vertical supply line, access from the surface to this vertical supply line can be retained as an inspection line. Any relative movement in the transition between the vertical supply line and The horizontal drainage pipe on the long socket can be seen through the inspection line in the form of the vertical supply line and the T-piece.

In a further embodiment, the T-piece with the downward section forms the inner part of the long socket connection and a 90 ° bend or two 45 ° bends to the transition into the horizontal drainpipe with its upward section form the outer part of the long socket connection, namely a long socket. This ensures that relative movements between the horizontal supply line connected to the T-piece, e.g. sewer pipe from the building, and the horizontal drain pipe in the deeper subsurface can only be absorbed via the long socket formed from these two components. The relative movements that occur between the horizontal drainage pipe and the overlying part of the drainage line arrangement with different settling behavior are thus permitted in the area of this long socket, thus avoiding stresses and bending moments in the drainage line arrangement.

The T-piece is preferably a pipe connection with two sockets and a spigot end, the spigot end being elongated and forming the inner part of the long socket connection.

In one embodiment, the control rod can be held displaceably in a protective tube attached to the vertical supply line. This ensures free mobility / displaceability of the control rod, particularly when the control rod is mounted on the outside of the vertical supply line, since the protective tube keeps the floor load away. The protective tube should go to the surface and be closed there with a cap. If necessary, the cap can be opened and the position of the control rod (upper end of the control rod) can be checked. Alternatively, it is possible for the control rod to be held displaceably in holders attached to the vertical supply line.

The fact that the upper end of the control rod extends to the surface or the inspection opening, with the upper end of the control rod protruding by the amount of overlap of the long socket over the uppermost bracket in the initial installation state with the long socket connection pushed together, makes it easy for the auditor to see whether the The overlap in the long socket is still sufficient to be able to maintain a secure fluid connection without leakage from the vertical supply line into the horizontal drainage pipe. If the control rod slips out of the uppermost bracket, the auditor can see that the sagged horizontal drainage pipe is no longer properly connected to the vertical supply line and consequently earthworks are required to expose the horizontal drainage pipe in order to readjust a long socket with sufficient overlap for to be able to create a next period of use.

If the vertical supply line consists of several straight pipe sections which can be connected to one another via plug-in sleeves, the control rod being designed to be extended accordingly and at least one holder for the control rod being arranged in the vertical supply line in each section, the vertical supply line can be cut to the desired length , in particular to the surface as an inspection line or as a rainwater line.

By providing this arrangement, both the inspection intervals can be lengthened and considerably larger settlement movements can be compensated for or bridged. The long socket connection has an overlap dimension of 10 cm to 100 cm, in particular 20 cm to 50 cm.

If the vertical supply line is a rainwater line or an inspection line, either rainwater, for example from the rainwater downpipe, can be introduced directly into the drainage line arrangement. Alternatively, the vertical supply line is available as an inspection line, which can be accessible from the surface of the surrounding area, for example by removing a cover. The drainage pipes connected to it can then easily be checked from the top of the site.

Two exemplary embodiments of the invention are described in detail below with reference to the accompanying drawings.

Fig. 1

eine Abflussleitungsanordnung in einer Schnittdarstellung durch den Untergrund in einer ersten Ausführungsform und

Fig. 2

eine Abflussleitungsanordnung in einer räumlichen Darstellung in einer zweiten Ausführungsform.

Show in it:

Fig. 1

a drainage line arrangement in a sectional view through the ground in a first embodiment and

Fig. 2

a drainage line arrangement in a three-dimensional representation in a second embodiment.

In Figure 1 a first embodiment of a drainage line arrangement is shown in a sectional view through the relevant subsurface U in which the drainage line arrangement is arranged. The surrounding subsoil consists of a load-bearing soil U _t , namely inorganic soil such as sand, gravel, etc. and an overlying non-load-bearing soil or subsoil U _n , which consists in particular of organic material such as humus, peat, silt or lignite.

In the first exemplary embodiment shown here, a building G with a floor slab or foundation F is shown. The floor slab F is loaded onto the load-bearing ground U _t via foundation piles P, so that the building G is largely free of subsidence. The drain line arrangement according to the invention is arranged in the area of the unsound subsoil U _n.

In the deeper subsoil, but in the area of the unsound subsoil U _{n, the} drainage line arrangement is essentially horizontal Drainage pipe 1 and a substantially vertical supply line 2, which conducts water to be drained off, for example waste water from the building G, to the horizontal drainage pipe 1. A 90 ° or 87 ° bend 11 is arranged between the vertical supply line 2 and the horizontal drain pipe 1. The arch 11 has an upwardly pointing sleeve in the form of a long sleeve 12 of 20 cm to 50 cm, for example 40 cm in length. The other end of the bend 11 is designed as a normal spigot end 13 and is inserted into a standard socket of a straight pipe section 10 of the horizontal drainage pipe 1.

The vertical supply line 2 with a long spigot end 22 is inserted into the long socket 12 of the arch 11. The lower element of the vertical supply line 2 in the exemplary embodiment shown here is a branch or T-piece 21, the end of which pointing downward is designed as a long pointed end 22. Furthermore, the T-piece 21 has a first connection sleeve 23 in a straight extension of the long spigot end 22, into which a revision or rainwater pipe 25 is inserted, as well as a second connection sleeve 24, which is oriented essentially horizontally and for connecting a horizontal supply line 3 is used for wastewater from building G. Correspondingly, a spigot 31 of a sewage pipe 30 leads into this second connecting sleeve 24 of the T-piece 21.

In the vertical supply line 2, a control rod 4 is held displaceably in holders 42. In this case, however, the lower end of the control rod 4 is firmly anchored to the horizontal drainage pipe 1, here directly on the arch 11, with a fastening 41. The control rod 4 has a length adapted to the installation situation, so that its upper end 40 ends close to the surface O in the inspection tube 25. The upper end 40 of the control rod 4 is preferably aligned so far above the uppermost bracket 42, so that the protrusion of the control rod 4 between this uppermost bracket 42 and the upper end 40 corresponds to the maximum extension of the long socket connection, consisting of the long socket 12 of the arch 11 and the long spigot end 22 of the T-piece 21 corresponds.

In the following, the functioning of the discharge line arrangement with the control options is described.

If a building G has been constructed using foundation piles P in a load-bearing subsurface U _t or a sewer pipe 30 of a horizontal supply line 3 from this building G or its base plate F (sewage outlet house) to the lower-lying sewer system on such an existing building G is, the outflow line arrangement described, consisting of the vertical supply line 2, namely T-piece 21 with a revision pipe 25 connected over it, is routed with its downwardly pointing long spigot end 22 via a corresponding long sleeve 12 of the bend 11 into a horizontal drainage pipe 1. The horizontal drain pipe 1 is arranged so that the long socket connection, consisting of the long socket 12 of the bend 11 and the long spigot end 22 of the T-piece 21, is installed in the completely pushed together state in order to ensure a maximum amount of overlap for the following, as long as possible period of use .

The vertical supply line 2 is fixed to the base plate and / or to the foundation F with a stainless pipe clamp 26. The pipe clamp 26 is preferably screwed directly to the T-piece 21 so that the entire vertical supply line 2 including the long spigot end 22 belongs to the system of the building with load dissipation via foundation piles P. In contrast, the horizontal drainage pipe 1, consisting of any straight pipe sections 10 and the bend 11, with the long socket 12 belonging to the long socket connection is only _{embedded in the unsound subsoil U n} and is therefore subject to significant subsidence, as is known, for example, for peatland (organic substances) are. The horizontal drainage pipe 1 then leads to the corresponding sewer system, which is exposed to the same or similar settlement behavior.

In the course of the years of use, the horizontal drainage pipe 1 will settle significantly more than the building G with the floor slab / foundation F. Thus the horizontal drain pipe 1 with elbow 11 and long socket 12 will sag relative to the vertical feed line 2 with T-piece 21 and long spigot end 22, which is received in the long socket 12, and telescope the long socket connection. Depending on the selected overlap dimension of 10 cm to 100 cm, in particular 20 cm to 50 cm or, as in the exemplary embodiment shown here, of 40 cm, such a selected settlement difference can be absorbed by the long sleeve without the sealed fluid connection from the vertical supply line 2 in the horizontal drainage pipe 1 dissolves and can lead to the disadvantages listed at the beginning, namely washing under the building, silting up of the drainage pipe or other impairments.

In order to provide an easy means for controlling the settlement movements, the control rod 4 is guided displaceably within the vertical supply line 2. The brackets 42 are to be provided at regular intervals, for example once or twice per meter, depending on the installation depth of the horizontal drainage pipe 1. For example, the mountings 42 can consist of eyelets / screws 42 which are anchored in corresponding bores in the inspection tube 25, which is preferably designed as a plastic tube, and which receive the control rod 4 in the eyelet 42 in a displaceable manner. The lower end of the control rod 4 is, however, firmly anchored in the arch 11 of the horizontal drainage pipe 1 by means of fastening 41. During settlement movements of the horizontal drainage pipe 1, the control rod 4 is thus pulled further downwards relative to the vertical supply line 2. During checks, it can thus be recognized directly in the inspection pipe 25 that a setting movement of the horizontal drainage pipe 1 has taken place by a certain amount to be read. The uppermost holder 42 of the control rod 4 in comparison to the upper end 40 of the control rod 4 can be used as a yardstick for a maximum permitted settlement movement.

In Figure 2 a second embodiment of the drain line arrangement is shown in a three-dimensional view. In Fig. 2 are identical or similar components according to the embodiment according to Fig. 1 with the same reference numerals designated. In contrast to Fig. 1 is in Fig. 2 a building with its base plate or foundation is not shown.

In Figure 2 As part of the horizontal drainage pipe 1, only the bend 11 is shown, here in the form of two 45 ° bends with its long socket 12 pointing upstream. In this long socket 12, which belongs to the horizontal drainage pipe 1, not shown here, is shown in accordance with, as in the exemplary embodiment Fig. 1 the long spigot end 22 of a T-piece 21 is inserted from the vertical supply line 2. A rainwater downpipe or inspection pipe, not shown here, is inserted into the first connecting sleeve 23 of the T-piece 21, shown here openly, which leads at least to the surface of the earth and, in the case of an inspection pipe, is closed there with a cap. A horizontal feed line (not shown here) in the form of a sewer pipe is connected to the second connecting sleeve 24. This line comes from a building, for example guided in the floor slab or the foundation.

In contrast to the first embodiment according to Fig. 1 is in accordance with the second embodiment Fig. 2 the control rod 4 is not arranged within the vertical supply line 2, but attached or guided on the outside, which prevents the flow path from being attached and / or clogged to the control rod 4 and its holders 42. As in the embodiment according to Fig. 1 the control rod 4 is firmly connected at its lower end to the arch 11 or the long sleeve 12 at the attachment 41. In the exemplary embodiment shown here, this is carried out with a lower pipe clamp 44.

In the exemplary embodiment shown here, the control rod 4 is designed as an inner tube in a protective tube 43. The protective tube 43 is connected to the vertical supply line 2 via upper pipe clamps 45 (two pieces shown here), for example on the T-piece 21 at its first connection sleeve 23 and below the second connection sleeve 24 at the upper end of the long spigot end 22 attached. The control rod 4 is accommodated in the protective tube 43 in a displaceable manner.

Therefore, should the horizontal drainage pipe 1 and thus also the bend 11 and the long socket 12 settle over the next few years of use in comparison to the building, i.e. here in particular the T-piece 21 or the vertical supply line 2 due to subsidence, the control rod 4 is over the lower pipe clamp 44 shifted within the protective tube 43. Since the protective tube 43 extends to the surface of the earth and is preferably closed with a cap there, this cap can be removed for revision and the amount of settlement can be measured at the offset between the upper end of the control rod 40 and the upper end of the protective tube 43.

When this drainage line arrangement is installed, the upper end 40 of the control rod 4 is flush with the upper end of the protective tube 43. In the course of the subsidence, the control rod and thus its upper end 40 will slowly sink into the protective tube 43. Should the maximum permissible amount of reduction corresponding to the length of the formation of the long socket (long spigot end 22) to the long socket 12 be reached or exceeded, a separation between the vertical supply line and the horizontal drainage pipe and thus an uncontrolled drainage of sewage / rainwater into the subsoil is to be avoided to expose this transition and to re-pipe. Up to this point in time, however, a safe drainage of the sewage or rainwater is guaranteed, with the control rod 4 arranged in the protective tube 43 always being able to monitor the correct connection. A precautionary digging can thus be avoided. By providing a sufficiently long telescopic area of the long sleeve, considerable settlements can be compensated for. List of reference symbols 1 horizontal drain pipe F. Base plate, foundation 10 straight pipe section G building 11 (90 ° / 87 °) bend P Foundation pile 12th Long socket U Underground 13th Pointed end of the bow U _t stable subsurface U _n unsound subsoil 2 vertical supply line 21 Tee 22nd long pointed end 23 first connection sleeve 24 second connection sleeve 25th Rainwater pipe or inspection pipe 26th Pipe clamp 3 horizontal supply line 30th Sewer pipe 31 Spigot end of the sewer pipe 4th Control stick 40 top of the control stick 41 Attachment 42 bracket 43 Protection tube 44 lower pipe clamp 45 upper pipe clamp

Claims (11)

1. A drainage piping arrangement for use on a building (G) which has a base plate and/or foundation (F) in the surrounding subsurface (U), having a substantially horizontal discharge pipe (1), able to be arranged in the deeper subsurface (U), and a substantially perpendicular feed line (2) to the horizontal discharge pipe (1), wherein between the perpendicular feed line (2) and the horizontal discharge pipe (1) there is a long socket connection provided in the perpendicularly oriented piping path, wherein the perpendicular feed line (2) is anchorable to the base plate and/or to the foundation (F) by means of a pipe clamp (26), characterised in that a check rod (4) is displaceably held in or on the perpendicular feed line (2) in a perpendicular longitudinal direction, wherein the check rod (4) is securely anchored to the horizontal discharge pipe (1).
2. A drainage piping arrangement according to claim 1, characterised in that a horizontal feed line (3) is arranged in or under the base plate and/or foundation (F), which feed line opens into the perpendicular feed line (2) via a T-piece (21).
3. A drainage piping arrangement according to claim 2, characterised in that the T-piece (21) together with the downwardly-guided portion forms the inner part of the long socket connection.
4. A drainage piping arrangement according to claim 3, characterised in that the T-piece (21) is a pipe connection with two sockets (23, 24) and a spigot (22), wherein the spigot (22) is elongated and forms the inner part of the long socket connection.
5. A drainage piping arrangement according to any one of the preceding claims, characterised in that the check rod (4) is displaceably fixed in a protective pipe (43) secured to the perpendicular feed line (2).
6. A drainage piping arrangement according to any one of claims 1 to 4, characterized in that the check rod (4) is displaceably fixed in holding means (42) secured [to] the perpendicular feed line (2).
7. A drainage piping arrangement according to claim 6, characterised in that the upper end (40) of the check rod (4) extends up to the surface or inspection opening, wherein in the initial installed state with completely pushed-together long socket connection, the upper end of the check rod (40) projects beyond the uppermost holding means (42) by the extent of overlap of the long socket (12).
8. A drainage piping arrangement according to claim 6 or 7, characterised in that the perpendicular feed line (2) consists of a plurality of rectilinear pipe portions connectable to one another via plug-in sockets, wherein the check rod (4) is correspondingly extendible in design and at least one holding means (42) for the check rod (4) is arranged in each portion of the perpendicular feed line (2).
9. A drainage piping arrangement according to any one of the preceding claims, characterised in that the long socket connection has a degree of overlap from 10 cm to 100 cm, in particular 20 cm to 50 cm.
10. A drainage piping arrangement according to any one of the preceding claims, characterised in that the perpendicular feed line (2) is a rainwater line or an inspection line (25).
11. A drainage piping arrangement according to any one of the preceding claims, characterised in that a 90° bend (11) or two 45° bends are provided as a transition from the perpendicular feed line (2) to the horizontal discharge pipe (1), wherein the upwardly-guided portion of the transition forms the outer part of the long socket connection, namely a long socket (12).

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