DE19942415A1 - Manufacture of watertight basement buildings made of masonry by enclosing them with rubber sheeting - Google Patents

Abstract

Process for the protection of new buildings and parts of buildings to be erected under the top of the site against groundwater and / or seepage water. DOLLAR A To protect against the ingress of groundwater, the buildings or parts of the building located below the top of the site are created in the form of a so-called white tub made of waterproof concrete, which is particularly time-consuming because of the necessary formwork work. In order to prevent seepage water from penetrating, the outer wall is provided with a water-repellent outer skin, for example a cement plaster with cold bitumen coating, and additional drainage measures are possibly provided, which also means high expenditure, but often does not offer the expected safety. DOLLAR A An EPDM rubber sheet is placed in the outer formwork before the concrete floor slab is overhanging and after the erection of the outer walls it is arranged to cover the upper edge of the height of the terrain, mechanically fastened to the upper edge of the wall and as a tight tub-like covering on all sides tightly welded. DOLLAR A The method can be used for parts of buildings of any kind that are to be erected below the top of the terrain.

Description

Basics

Basements and other new buildings and parts of buildings to be erected in the ground are to be built through the newly developed construction protected against groundwater or seepage water that penetrates from outside become.

According to the current state of the art, this protection can only be achieved if groundwater is present the creation of a so-called white tub, d. H. the entire basement is in waterproof concrete and additional complex sealing measures carried out.

It is necessary to apply a water-repellent outer skin against leachate occurring water must be drained off by drainage. The effective disposal of this Drainage water generally fails due to the relevant official regulations.

Both the elaborate creation of a white tub and the problem of the drainage water elimination is no longer necessary by using the newly developed process.

The seal in the new process is created by the use of a rubber sheet that the Completely encloses the building up to the upper edge of the surrounding area.

workflow

After excavation, the subgrade is made as usual. After that, a cleanliness layer made of sand, or from 20 mm thick hard foam panels or similar or in the case of thermally insulated cellars made of 45 mm thick rigid foam panels or the like. Then the outer formwork created.

Now the protective film is installed in one piece, either the film parts to be rolled up later on the outer walls are temporarily stored on the side next to the formwork, ( Fig. 1, Var. 2) or these side parts are delivered separately for later assembly. ( Fig. 1, Var. 1) Then the floor slab including the required reinforcement is made from flow concrete or ready-mixed concrete. ( Fig. 1)

After the base plate has set, the basement can either be built in the conventional way from gas concrete blocks, pumice stones or brick masonry. In the process newly developed here, a facing brick is preferably used, which is processed using a thin-bed mortar in a type of adhesive technique. ( Fig. 2)

After completion of the basement masonry, the side film is attached, whereby either the film parts stored on the side are rolled up on the outer walls ( Fig. 2, Var. 2) and mechanically fastened at the upper edge, or the side parts are first mechanically fastened at the upper edge ( Fig . 2, Var. 1) and welded to the bottom film at the bottom.

Before backfilling the work area, the basement walls are covered with a dimpled sheet covering to prevent damage to the sealing film when it is refilled. ( Fig. 2)

After filling, the basement ceiling can then be made of in-situ concrete, prefabricated parts or other materials to be created.

Foil used

EPDM rubber film, unclad according to DIN 7864, without harmful emissions and

• - Landfillability, landfill class 3 (landfill for municipal waste)
• - Root resistance according to FLL guidelines, compatible with plants
• - DIN 16726

Thermofast joining technology at the workplace ( Fig. 3)

Corner reinforcements made of prefabricated EPDM rubber parts welded on site or pre-assembled at the factory. ( Fig. 3)

benefits

When groundwater is present, the production associated with considerable additional costs is one So-called white tub made of waterproof concrete is no longer required. This allows a Kel can be created from masonry that is fully heat-resistant without any special additional effort. To protect against leachate, the usual and in many cases not permanently effective are omitted Isolation measures such. B. cement exterior plaster with cold bitumen coating, or Bitumendickbe layering on a primer.

The formation of a fillet on the lower edge of the masonry to drain the leachate into a Drainage is eliminated.

A ring drainage can generally be dispensed with, with the problem then also relating to the whereabouts of the drainage water is basically eliminated.

The cost savings compared to the white tub are in one size for a single-family home order from 15,000.00 DM.

Compared to the cellar, which is traditionally protected against seepage water, the simple construction and the elimination of the drainage also reduced costs.

Claims (2)

1. Production of brick new cellars with sealing up to the upper edge of the earth against penetration Groundwater or leachate from pre-assembled rubber foil and pre-made molded parts. 2. New cellar according to claim 1, in which the pre-assembled rubber parts on site by means of Thermofast- Joining technology.