Precast concrete elements are manufactured in the factory under optimal conditions and weather-resistant according to individual building dimensions. Empty conduits and installation shafts can be installed in the factory for later electrical installation.
Precast concrete elements are precast elements made of reinforced concrete, prestressed concrete or conventional concrete that are manufactured at the factory and transported to their destination for assembly. Due to production in the factory and the resulting constant conditions, it is possible to produce very homogeneous finished parts of consistent quality. Production is usually carried out on large steel tables to which high-frequency vibrators are connected.
Precast concrete elements can be produced in a wide variety of forms:
A standardised range of types consisting of:
These precast concrete fasteners reliably anchor the façade elements, which are stressed by wind forces and dead weight, to the shell construction.
They consist of heavy-duty anchors for fastening to the shell. Their holders are either inserted into the formwork before concreting or subsequently placed on site. The specified horizontal distances are achieved by additional pressure screws (spacer screws).
Image: Hanging anchors - baukobox
Three types of fastening of precast concrete elements: (façade)
1.) When using anchor rails as built-in parts, large tolerances can be compensated for along the rail. Anchor channels must be made of stainless steel.
2.) Fastening with subsequently installed dowels has the advantage that preliminary planning is simplified and inaccuracies of the construction site can be better compensated for. They therefore offer the greatest flexibility in installation. However, the disadvantage is the high cost of installing heavy-duty anchors.
3.) Built-in parts are attached to the formwork before concreting. The exact position is particularly important, as fit inaccuracies can only be compensated for within the tolerances of the suspension anchors.
In the case of prefabricated facades made of reinforced concrete, the formation of so-called sandwich elements is possible in addition to single-shell constructions. These are two- or multi-layered, curtain wall panels. Composite needles, for example, are used as lanyards to obtain a low-constraint system.
Image: Sandwich panel - baukobox
precast concrete elements can be made in different concrete qualities:
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