The ditch is covered with expanded clay, the concrete blind area is installed on top, it protects the material from the ingress of liquid and its siltation. The base is insulated by applying slab materials or simply whispering.
The ditch is covered with expanded clay, the concrete blind area is installed on top, it protects the material from the ingress of liquid and its siltation. The base is insulated by applying slab materials or simply whispering.
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