Supports: Supports for brick ceilings always require an intermediate layer of bitumen cardboard for the purpose of acoustic decoupling, to avoid stress cracks and to prevent the perforated bricks from overflowing during pouring. While the depth of the support in the direction of clamping is at least 10 cm, it is 3-5 cm for the side support, depending on the manufacturer's specifications.
Ring anchors: In many cases, brick ceilings require a circumferential ring anchor to absorb horizontal load inputs, especially if the slab effect of the ceiling is not sufficient. The ceiling support is therefore designed as a reinforced ring anchor. The bond takes place via reinforcement bars protruding from the ceiling. In new buildings, the ring anchor is usually located in the area of the vertical wall. However, especially in the renovation of old buildings, it is located at the edge of the ceiling, i.e. in front of the wall that serves as a support. In order to preserve the space for the concrete to be laid, so-called flat bricks or negative bricks were developed, which are about halved in height.
The grouting takes place in the same process as the joint grouting in the brick ceiling and the insertion of the concrete layer.
Image: Ceiling cross-section Typical lateral support detail in new buildings - bauwion
Image: Longitudinal ceiling section Typical support detail in old buildings - bauwion
1 Insulation
2 Separation layer
3 Ring anchors
4 Reinforced concrete beams
4A Reinforced concrete beams cut lengthwise
5 Ceiling bricks
6 Concrete layer
7 Flat or negative bricks
Source: bauwion
