Light shaft made of waterproof reinforced concrete, manufactured in accordance with DIN 1045-2, as a prefabricated element with a floor in fair-faced concrete quality. For building interior corners, the light shaft is also available as an L-shaped version . In addition to the grid dimensions specified by the manufacturers, special dimensions are possible and also common. The elements are attached directly to the insulated or uninsulated concrete basement walls and fastened via metal brackets and heavy-duty dowels. Spacers bridge the strength of thermal insulation applied to the outer wall of the basement on site. Masonry basement walls are only suitable to a limited extent for the installation of the shaft. Smaller light well bodies up to about 450 kg dead weight can be fixed using heavy-duty anchors embedded in concrete in the wall. For heavier light well bodies, a separate foundation is usually required. If the upper edge of the light shaft is above the upper edge of the building, e.g. in underground car parks, a backfill plate is placed on the free side of the shaft.
Image: Concrete light well, stackable - ACO
This type of light well is used in particular as a waterproof version for water pressing from the outside, on a uninsulated concrete wall or on an insulated concrete wall in conjunction with pressure-tight system insulation in the connection area of the light well.
Source: bauwion
