Building class 4 (GK4)
exceptionally fire-retardant
Building height: > 7 m to ≤ 13 m
Units: ≤ 200 m²
Inner wall
(load-bearing, room-enclosing)
Various wall systems are available for the construction of internal walls requiring high fire resistance, depending on the structural requirements and wall thicknesses.
Desktop view
Abbreviation
10 HT 21-401
10 HT 21-402
10 HT 21-400 LVL
System diagram
8mm
8mm
8mm
Wall thickness [mm]
≥ 200
≥ 140
≥ 140
Substructure [mm]
wooden stand
crossbars
60 x 140
60 x 140
60x80
60x80
Kerto®
45x140 LVL S-beam
45x140 GLVL Q-panel
Sheathing per side [mm]
18 fermacell® + 12 OSB
18 fermacell® + 12 OSB
18 fermacell® + 12 OSB
Permissible voltage σc,0,d,fi [N/mm]*
2.0
1.6
6.0
*σc,0,d,fi already reduced in accordance with MHolzBauRL – Annex 1; A1.2
Mobile view
Abbreviation
10 HT 21-401
System diagram
8mm
Wall thickness [mm]
≥ 200
Substructure [mm]
wooden stand
crossbars
60 x 140
60 x 140
Sheathing per side [mm]
18 fermacell® + 12 OSB
Permissible voltage σc,0,d,fi [N/mm]*
2.0
*σc,0,d,fi already reduced in accordance with MHolzBauRL – Annex 1; A1.2
Abbreviation
10 HT 21-402
System diagram
8mm
Wall thickness [mm]
≥ 140
Substructure [mm]
wooden stand
crossbars
60x80
60x80
Sheathing per side [mm]
18 fermacell® + 12 OSB
Permissible voltage σc,0,d,fi [N/mm]*
1.6
*σc,0,d,fi already reduced in accordance with MHolzBauRL – Annex 1; A1.2
Abbreviation
10 HT 21-400 LVL
System diagram
8mm
Wall thickness [mm]
≥ 140
Substructure [mm]
wooden stand
crossbars
Kerto®
45x140 LVL S-beam
45x140 GLVL Q-panel
Sheathing per side [mm]
18 fermacell® + 12 OSB
Permissible voltage σc,0,d,fi [N/mm]*
6.0
*σc,0,d,fi already reduced in accordance with MHolzBauRL – Annex 1; A1.2
An old example
Internal wall (load-bearing, enclosing the room)
Various wall systems are available for the construction of internal walls that meet fire resistance requirements ranging from standard to highly fire-retardant, depending on the structural requirements and wall thicknesses.
wooden stand
KVH – C24
Weather protection system (DIN 68800)
vhF, ETICS, etc.
Wall thickness
188 mm
σc,0,d,fi
≤ 2.0 N/mm²
Note:
Cladding with 2x12.5 mm fermacell®® Gypsum fibreboards are used in applications requiring high fire resistance
tch – 2 x 12.5 mm fermacell™® Plasterboard = >60 minutes
*Trimming of 5mm per side recommended for optimal squareness, but not mandatory for technical integrity
Internal wall (load-bearing, enclosing the room)
Various wall systems are available for the construction of internal walls that meet fire resistance requirements ranging from standard to highly fire-retardant, depending on the structural requirements and wall thicknesses.
wooden stand
KVH – C24
Weather protection system (DIN 68800)
vhF, ETICS, etc.
Wall thickness
188 mm
σc,0,d,fi
≤ 2.0 N/mm²
Note:
Cladding with 2x12.5 mm fermacell™® Gypsum fibreboards are used in applications requiring high fire resistance
tch – 2 x 12.5 mm fermacell™® Plasterboard = >60 minutes
*Trimming of 5mm per side recommended for optimal squareness, but not mandatory for technical integrity
Internal wall (load-bearing, enclosing the room)
Various wall systems are available for the construction of internal walls that meet fire resistance requirements ranging from standard to highly fire-retardant, depending on the structural requirements and wall thicknesses.
wooden stand
KVH – C24
Weather protection system (DIN 68800)
vhF, ETICS, etc.
Wall thickness
188 mm
σc,0,d,fi
≤ 2.0 N/mm²
Note:
Cladding with 2x12.5 mm fermacell®® Gypsum fibreboards are used in applications requiring high fire resistance
tch – 2 x 12.5 mm fermacell™® Plasterboard = >60 minutes
*Trimming of 5mm per side recommended for optimal squareness, but not mandatory for technical integrity
Overview and other building categories
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