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Fire dampers installed within vertical wall Fire dampers installed within oor
Installation a [mm] b [mm] c [mm] d [mm]
Rigid wall
EI 180 S Installation within vertical rigid wall
Mortar sealing 50 75 - -
EI 120 S Installation within vertical rigid wall
Mortar or plaster putty sealing 50 75 - -
EI 90 S Installation within vertical rigid wall
Plasterboard and rock wool 100 kg/m³ sealing 50 75 - -
Flexible wall
EI 120 S Installation within vertical light wall
(plasterboard)
Mortar or plaster putty sealing 50 75 - -
EI 90 S Installation within vertical light wall
(plasterboard)
Plasterboard and rock wool 100 kg/m³ sealing 50 75 - -
EI 120 S Installation within vertical light wall (gypsum
blocks wall)
Plaster putty sealing 50 75 - -
EI 90 S Installation within vertical light wall (gypsum
blocks wall)
Plaster putty sealing 50 75 - -
Floor
EI 180 S Installation within oor
Mortar sealing - - 50 75
EI 120 S Installation within oor
Mortar sealing - - 50 75
EI 90 S Installation within oor
Mortar sealing - - 50 75
Fire Batt (Weichschott) sealings
Fire dampers installed within vertical wall Fire dampers installed within oor
Installation a [mm] b [mm] c [mm] d [mm]
Rigid
wall
EI 120 S Installation within vertical rigid wall with Fire
Batt (Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing 50 * 50 - -
Flexible wall
EI 120 S Installation within vertical light wall
(plasterboard) with Fire Batt (Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing 50 * 50 - -
EI 120 S Installation within vertical light wall (gypsum
blocks wall) with Fire Batt (Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing 50 * 50 - -
Floor
EI 90 S Installation within oor and Fire Batt
(Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing - - 200 75
* For the distance aincluding between 50 mm and 200 mm the re resistance class is reduced to EI
90 S
Construction supports characteristics
The European standard for re dampers foresees a precise correlation
between the wall/oor characteristics and the re resistance class
obtained, as well as the correlation between wall/oor used for the
test and wall/oor used for the actual installation.
The test results obtained on a type of wall/oor are valid also for
walls/oor of the same type but with greater thickness and/or densi-
ty than those used in the test.
For plasterboard walls, the test results are also valid for walls with a
greater number of plasterboard layers on each side.
As a result, the indicated thickness and density characteristics are to
be considered as minimum values.
The wall/oor in which the re dampers are installed must be re
class certied according to the standards foreseen for the structure.
Rigid walls
Can be made with aerated concrete blocks, poured concrete, con-
crete panels, perforated cell elements in concrete or brick in accord-
ance with the following characteristics:
• minimum thickness 100 mm;
• minimum density 500 kg/m³.
The use of a reinforcing beam above the opening is recommended
for walls made from concrete blocks, bricks or in concrete cell ele-
ments.
For walls built with perforated elements, it is also recommended that
the area of the opening be made from full elements (for example
aerated concrete blocks) to guarantee the correct adhesion of the
mortar.
1. Reinforcing beam