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5.4.2 External lightning protection system for
an industrial and residential building
Figure 5.4.2.1a shows the design of an external lightning
protection system for an industrial building and Figure
5.4.2.1b for a residential building with annexed garage.
These Figures and the Tables 5.4.2.1a and 5.4.2.1 b also
show examples of the components used today.
The necessary internal lightning protection measures such as
lightning equipotential bonding and surge protection (see also
chapter 6) are not taken into account.
Particular attention is drawn to DEHN´s DEHNhold, DEHNsnap
Figure 5.4.1.1 Air-termination system – Expansion compensation and DEHNgrip portfolio of holders.
by means of a bridging braid

10
4
9

α 11

r

2
8

7 1
6 5 3

Figure 5.4.2.1a External lightning protection system of an industrial building

No. Item Part No. No. Item Part No.
1 Stainless steel wire (Ø 10 mm) StSt (V4A) 860 010 7 Roof conductor holder for flat roofs 253 050
2 Earth entry rod set St/tZn 480 150 8 DEHNhold conductor holder 274 160
3 Cross unit StSt (V4A) 319 209 Elevated ring conductor
4 DEHNalu wire (Ø 8 mm) AlMgSi 840 008 9 with concrete base with adapted StSt (V4A) 102 340
base plate and spacer
106 160
5 Bridging braid Al 377 015
Air-termination rod with concrete AlMgSi 103 420 10 DEHNiso spacer ZDC-St/tZn 106 120
6
base and adapted base plate 102 340 11 Self-supporting air-termination rod 105 500
Table 5.4.2.1a Components for the external lightning protection system of an industrial building

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