All building parts with-
in this angle are protected.
TBS
Blitzschutz-Leitfaden
2018
/
en
/
2020/01/10
14:42:40
14:42:40
(LLExport_02613)
/
2020/01/10
14:42:54
14:42:54
94
Chapter The external lightning protection system
. All parts the building that not fall un-
der the protective angle are risk from direct light-
ning strikes. Transfer the
protective angle the building.
h: Building height
Protected area
Protective angle α
Dormer windows not protected the ridge cable
Protective angle method roof ridge
Lightning protective angle α
Ridge height m
Lightning protection classes II, III, IV
Diagram assist determining the protective angle
2nd step: Determining the protective angle
Example:
The height the building (in this case: is
entered onto the horizontal axis the diagram. This height
is the starting point for planning the entire lightning
protection system.1st step: Determining the height the building
Determine the ridge height the building. The ridge conductor arranged on
the ridge and thus forms the “backbone” for the air-
termination system. You can
now read the protective angle (α) off the vertical axis
(“1”). our example, the angle 62°. Then
proceed vertically until you meet the curve for your
lightning protection class (in this case: III). our example, the building is
10 high
