User Manual 5.1-1 (2018-09) 27
Subject to change
Series FK92K
B
B
B
Concrete C20/25
FK90K corner bracket
as anchor
Roughen concrete ceiling in the
area of the construction joint
Installation remote from and above rigid ceilings in
ventilation ducts made of concrete
Production according to general construction rules.
Dimensioning according to DIN 1045 and DIN 4102-4.
•
Cover made of concrete C 20/25, ≥ 100 mm thick,
≤ 750 mm high.
•
Reinforcement made of reinforcing steel Ø ≥ 8 mm.
Vertical spacing ≤ 150 mm, sealed all round horizontally
≤ 150 mm. Alternative: welded steel wire mesh Q 335 A.
•
Reinforcing steel overlap C
nom
≥ 35 mm for environments
with up to moderate humidity (exposure class XC3).
•
To bond the concrete, it is generally necessary to
roughen the concrete ceiling and, where applicable, the
reveal.
FK90K fire dampers
Base installation on rigid ceilings / metal stud walls as fire walls
Section B-B
UA
W ≤
115
S
S
s
FK90K
corner
bracket
Operation side
FK90K casing
Filling F2
UA
W > 115
S
S
T
s
corner
bracket
Operation side
FK90K casing
Filling F2
UA
W ≤
115
S
S
s
Operation side
FK90K casing
Gypsum joint filler
corner
bracket
T
UA
W > 115
S
S
s
corner
bracket
Operation side
FK90K casing
Gypsum joint filler
Cross-sections A-A
Circumferential lining with T
≥
20-mm-thick boards made of calcium silicate or with T
≥
S-thick boards made of the
same material(s) used for the wall cladding.
Installation with the filling F2, gap s
≤
20
mm
⇒
see pages 17 to 20
Installation with butt joints s
≤
2
to
5
mm
Filling with gypsum joint filler.
⇒
see pages 17 and 21
The following
minimum thickness D
[mm]
is required for
installation of the FK90K fire dampers
:
Fire resistance period in minutes
30 / 60 /
90
Solid concrete ceilings
100
Metal stud walls as fire walls or safety partition
walls
must be classified as EI 60-M or higher accord-
ing to DIN EN 13501-2, or be designed in accordance
with a general building authority test certificate (AbP).
Claddings must be applied on both sides with at least
2 layers, and may contain sheet steel inserts. The studs, bay rails and reinforcements adjacent to FK90K fire damp-
ers must be made up of UA profiles. For structural reasons, further reinforcements may be necessary for wall heights
of > 5 m.
Fire resistance period in minutes
60 /
90
Minimum thickness W [mm]
of the metal stud walls
105
