g.3 Fastening substrates
The main differences are the fastening substrates
and load classes. 20/25
Lightweight concrete,
e.
Materials
Concrete Light construction materials
Normal concrete,
e.g.g. the metal
spreading anchors develop lateral forces when sub-
jected loads, break-outs may occur when the pre-
scribed spacing distances are not complied with.
For walls and ceilings old, existing buildings, so-
called extraction experiments are often required, or-
der determine the resistance and load capacity of
the construction.g. plasterboard
Wall materials
Full brick with dense struc-
ture, e. the edge component.2. hollow blocks
made lightweight con-
crete
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Chapter The external lightning protection system
.2. 20/22
Plates and panels,
e.g. lightweight
concrete, expanded clay,
pumice
Plates with porous struc-
ture, e.g. With metal spreading
anchors, certain spacing distances must guaran-
teed, e. brick
Hollow blocks with dense
structure, e.g. hollow brick
Full bricks with porous
structure, e.g. By
contrast, bolt ties and injection systems can placed
very close the edge, they not create any lat-
eral forces. While most anchors are suitable
and approved for use concrete, there are also spe-
cial solutions for various masonry types, even for hol-
low brick porous concrete
