DE20112443U1 - House connection shaft - Google Patents

Description

DESCRIPTION:

The invention belongs to the field of land development, i.e. civil engineering.

1. STATE OF THE ART:

According to the current state of the art, after completion of the main lines in the street area or sidewalk, the house connection lines are laid in their own trench from the intended connection in the street to about 3 m into the individual property and temporarily closed. The end is marked with a wooden post for easy retrieval.

This results in numerous pipe crossings at the individual trenches, with further dredging, earth removal, refilling and compaction involving high material and cost expenditure.

The sewer connections for RW and SW are located roughly in the middle of the street and between the inspection shafts and cannot be inspected directly, but only via TV robots. Until the house connection is made, the laid sewer is blind and can lead to deposits. If repairs are carried out later using inliners, the connections must be cut out and sealed with robots. However, all of this is not eliminated by using the house connection shafts.

For public and private inspection of the house connection sewers, the landowner must install and maintain appropriately accessible house connection inspection shafts on his property.

For the water and natural gas supply connections, tapping valves with valve rods and valve caps must be installed. Since 90% of damages are proven to occur at these valve locations, increased repair costs due to road excavation, etc. are to be expected. The empty connection lines are also likely to become contaminated until the house connection is made.

The cables for electricity, telecommunications and TV are subsequently buried in the sidewalk area, including the sleeve rings. The house connection cables are also buried approx. 3 to 5 m into the property - with the extra length rolled up - and made discoverable with the cable end visible.

2. THEPROBLEM:

The invention specified in patent claim 1 is based on the problem of creating a house connection shaft in which all public supply and disposal lines for the house connections end directly at the property boundary and in which the private connections can be made later if required.

3. SOLUTION:

This problem is solved by the house connection shaft (Figure 1+2) in that the free working space has a diameter of at least 100 cm -(DIN EN 476),

the shaft cover [6] (Figure 1) has an access opening (a) (Figures 1+2) and the shaft space is accessible via a permanently installed access ladder with access aid (b) (Figure 1).

and in the shaft walls [1-2-3-4-5] (Figure l+2) the pipe penetration openings (c) (Figure 1) are provided in the correct position and height as required.

The normal shaft has no solid bottom or is filled with gravel up to the level of the lower pipe (usually the sewage sewer).

Shafts for the groundwater area are provided with a waterproof concrete floor [7] (Fig. 1). The pipe penetrations in the shaft walls are made with waterproof shaft sleeves.

4. ADVANTAGES:

Thanks to the development of the house connection shaft, all supply and disposal line connections - each for 2 buildings - can be connected in or on the shaft, namely:

< RW sewer connection with inspection branch in the shaft accessible for flushing - visual and TV inspection.

< SW channel connection as before

< The inspection shafts on the property that would otherwise be necessary are no longer required!

< Drinking water supply connection and shut-offs in the shaft, thus the shut-off (drilling valve with valve rod and cover cap in the street) directly on the main line can be omitted.

< Natural gas supply as before!

< Telecom and TV cables can be pulled through the shaft and the sleeve loops including the house connection cables can be stored in the cable box. This means that the house connection cable reel does not need to be installed underground.

< The power supply distribution box is inserted into the opening provided in the shaft ceiling and connected to the main supply line using a socketed branch cable. The house connection cables are only connected to the distribution or fuse box through the house connection shaft when required, which means that the buried connection cable and the subsequent extension socket are no longer necessary.

5. EXECUTION:

When laying the sewer lines for RW and SW, the house connection shafts must be installed on both sides of the route and the connection lines must be made into the shaft or to the outside of the shaft including an inspection opening so that the house connection can be made from the outside after the assigned side of the shaft has been exposed.

When laying the main water supply line, T-pieces are installed at right angles to the house connection shaft axis and the connection line (1 line for 2 plots) is led to the shaft, also divided by a T-piece in front of the shaft and then introduced into the shaft and provided with a shut-off valve.

When laying the natural gas supply line above, the same procedure is followed as before, but instead of the shut-off valve, automatic "GAS stop valves" are installed in the shaft.

Any district heating pipes (instead of gas) are led with a supply and return line to the shaft, divided between the two plots and installed in the shaft as house connections and provided with a shut-off.

All connecting lines are laid in a trench, i.e. directly on top of each other, from the main line to the shaft. To avoid multiple excavations, the crossings are accessible to construction site traffic - to be bridged until the upper line is laid

The telecom and TV cables are pulled into the side of the house connection shaft, where a loop with a diameter of approx. 80 cm is formed in the area of the ceiling recess, inserted into the existing partition and from there led to the next shaft. To splice and connect the house connection cables, the roll is pulled out through the ceiling slot and then inserted again. The house connection cables are stored in the approximate required length in front of the connection shaft wall in a protected manner until the house connection can be made.

For the power supply, a house connection fuse box is installed in the ceiling opening in each shaft - for every 2 buildings - and connected to the main supply cables as usual. The house connection cables can then be fed through the shaft over the house connection box base and connected at the top in the distribution room if required.

The supply and disposal lines shown in the following plans are speculative in terms of location, size and number and are of course to be arranged according to actual requirements.

-7-

EXPLANATION OF THE DRAWING FIGURE 1

[&igr;

= shaft wall

= shaft wall

= shaft wall = Shaft wall 4 = Shaft wall 5 = Shaft wall 6

's *■

< N

= ENTRY OPENING = ENTRY LADDER

= PIPE PASSAGES

= INSERTION OPENING TELECOM / TV SLEEVE LOOP

= INSTALLATION OPENING FOR POWER DISTRIBUTION BOX

FILE NUMBER:

DATE:
16.07.2001

HANS WURMSEHER *-* -*TEL.:<Ä631/93150 - FAX: 08531/32981

Claims (1)

HOUSE CONNECTION SHAFT to improve conventional ACCESS,
as an inspection and distribution shaft to accommodate all development, supply and disposal lines consisting of a 5-sided lower section, a cover plate, if necessary a base plate
characterized in that
the free working space in the shaft has a diameter of at least 100 cm (DIN EN 476),
in the sides 1, 2, 3, 4, 5 of the shaft base, the appropriate pipe penetrations are provided for the entry and exit of the supply and disposal lines as required and
the manhole cover with walkable surface,
an access opening DN 62.5 cm with Begu cover (with ventilation slots),
a permanently mounted entry ladder with entry aid is installed
as well as an opening for the telecom/TV cable reel with the house connection sleeves and house connection cables,
as well as an installation opening for the power distribution box base - in the required size.