-
K25.en Fire Protection Claddings of Beams and Columns
K252v.en Vidifire A1 - Steel Beam Encasement
K253v.en Vidifire A1 - Steel Column Encasement
Drywall Construction System 09/ 2017
K25.en
-
2
K25.en Knauf Vidifire A1 - Fire Protection Claddings of Beams
and Columns
b
b
b
t
b
h
b
h
bh
h
b
h
b
htt
t
t
t
t
b
bh
h
b
h
m-1
100
AA
A100
4b
t
1002h + b
A
A
A
A
100A
2b + 2h
A2h + b
100
100A
A
2b + 2h
A
2h + bA
100
2b + 2hA
100
t
100
200t
t
AA
1002b + 2h
A
200t
A
2b + 2hA
100
2b + 2hA
100
200
m-1
Calculating the section ratio of steel beams/columns
Fire Exposure Fire Exposure SurfaceSection ratio
SurfaceSection ratio
Structure
Beam or column
Beam or column
Beam or column
Beam or column
Beam
Beam
Beam
Flat bar
Flange
Flange
Angle
Angle
Double angle
Square and rectangular closed profiles, tubes, columns
4-sided
4-sided
4-sided
4-sided
4-sided
бетон или зидария
4-sided
3-sided
3-sided
3-sided
3-sided
4-sided
4-sided
4-sided
4-sided
4-sided
Structure
b, h and t in cm surface area A in cm2 b, h and t in cm surface
area A in cm2
-
3
K25.en Knauf Vidifire A1 - Fire Protection Claddings of Beams
and Columns
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
2526
024
0
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K252.de Knauf Fireboard Steel Beam EncasementCladding
thickness
4
Fire resistance class
Thickness of Vidifire A1 cladding dependingon section ratio at
critical temperature 500oC
15 30 45 60
R15 ≤ 336
R30 ≤ 336
R45 ≤ 310 >310 and ≤ 333
R60 ≤ 140 >140 and ≤ 333
R90 ≤ 60 >60 and ≤ 333
R120 ≤ 110 >110 and ≤ 333
R150 ≤ 60 >60 and ≤ 333
R180 ≤ 110 >110 and ≤ 333
R210 ≤ 54 >54 and ≤ 333
1515151530
45 3045
60 4560
R15R30R45R60R90
R120R150R180R210
Beam
s
HE-A
100
HE-A
120
HE-A
140
HE-A
160
HE-A
180
HE-A
200
HE-A
220
HE-A
240
HE-A
260
HE-A
280
HE-A
300
HE-A
320
HE-A
340
HE-A
360
HE-A
400
HE-A
450
HE-A
500
HE-A
550
HE-A
600
HE-A
650
HE-A
700
HE-A
800
HE-A
900
HE-A
1000
h [mm] 96 114 133 152 171 190 210 230 250 270 290 310 330 350
390 440 490 540 590 640 690 790 890 990
b [mm] 100 120 140 160 180 200 220 240 260 280 300 300 300 300
300 300 300 300 300 300 300 300 300 300
HE-A DIN 1025-3 EURONORM 53-62 Cladding thickness with
protection on 3 sides at 5000C
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K253.de Knauf Fireboard Steel Column EncasementCladding
thickness
5
151515
30 1530
45 3045
60 4560
R15R30R45R60R90
R120R150R180R210
Colu
mns
HE-A
100
HE-A
120
HE-A
140
HE-A
160
HE-A
180
HE-A
200
HE-A
220
HE-A
240
HE-A
260
HE-A
280
HE-A
300
HE-A
320
HE-A
340
HE-A
360
HE-A
400
HE-A
450
HE-A
500
HE-A
550
HE-A
600
HE-A
650
HE-A
700
HE-A
800
HE-A
900
HE-A
1000
h [mm] 96 114 133 152 171 190 210 230 250 270 290 310 330 350
390 440 490 540 590 640 690 790 890 990
b [mm] 100 120 140 160 180 200 220 240 260 280 300 300 300 300
300 300 300 300 300 300 300 300 300 300
HE-A DIN 1025-3 EURONORM 53-62 Cladding thickness with
protection on 4 sides at 5000C
For closed profile cross sections the cladding thickness depends
on section
-
4
K25.en Knauf Vidifire A1 - Fire Protection Claddings of Beams
and Columns
151515
30 1530
45 3045
60 4560
R15R30R45R60R90
R120R150R180R210
Colu
mns
HE-B
100
HE-B
120
HE-B
140
HE-B
160
HE-B
180
HE-B
200
HE-B
220
HE-B
240
HE-B
260
HE-B
280
HE-B
300
HE-B
320
HE-B
340
HE-B
360
HE-B
400
HE-B
450
HE-B
500
HE-B
550
HE-B
600
HE-B
650
HE-B
700
HE-B
800
HE-B
900
HE-B
1000
h [mm] 100 120 140 160 180 200 220 240 260 280 300 320 340 360
400 450 500 550 600 650 700 800 900 1000
b [mm] 100 120 140 160 180 200 220 240 260 280 300 300 300 300
300 300 300 300 300 300 300 300 300 300
HE-B DIN 1025-2 EURONORM 53-62 Cladding thickness with
protection on 4 sides at 5000 C
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
1534
032
0
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K253.de Knauf Fireboard Steel Column EncasementCladding
thickness
5
Beam
s
HE-B
100
HE-B
120
HE-B
140
HE-B
160
HE-B
180
HE-B
200
HE-B
220
HE-B
240
HE-B
260
HE-B
280
HE-B
300
HE-B
320
HE-B
340
HE-B
360
HE-B
400
HE-B
450
HE-B
500
HE-B
550
HE-B
600
HE-B
650
HE-B
700
HE-B
800
HE-B
900
HE-B
1000
h [mm] 100 120 140 160 180 200 220 240 260 280 300 320 340 360
400 450 500 550 600 650 700 800 900 1000
b [mm] 100 120 140 160 180 200 220 240 260 280 300 300 300 300
300 300 300 300 300 300 300 300 300 300
HE-B DIN 1025-2 EURONORM 53-62 Cladding thickness with
protection on 3 sides at 5000 C
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K252.de Knauf Fireboard Steel Beam EncasementCladding
thickness
4
R15R30R45R60R90
R120R150R180R210
15151515
30 1545 30
45 3060 45
60
-
5
K25.en Knauf Vidifire A1 - Fire Protection Claddings of Beams
and ColumnsКо
лони
HE-M
100
HE-M
120
HE-M
140
HE-M
160
HE-M
180
HE-M
200
HE-M
220
HE-M
240
HE-M
260
HE-M
280
HE-M
300
HE-M
32
0/305
HE-M
320
HE-M
340
HE-M
360
HE-M
400
HE-M
450
HE-M
500
HE-M
550
HE-M
600
HE-M
650
HE-M
700
HE-M
800
HE-M
900
HE-M
1000
h [mm] 120 140 160 180 200 220 240 270 290 310 340 320 359 377
395 432 478 524 572 620 668 716 814 910 1008
b [mm] 106 126 146 166 186 206 226 248 268 288 310 305 309 309
308 307 307 306 306 305 305 304 303 302 302
HE-M DIN 1025-4 EURONORM 53-62 Cladding thickness with
protection on 4 sides at 5000 C
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K253.de Knauf Fireboard Steel Column EncasementCladding
thickness
5
R15R30R45R60R90
R120R150R180R210
15151515
30 1530
45 3045
60 45 60 45 60
Гред
и
HE-M
100
HE-M
120
HE-M
140
HE-M
160
HE-M
180
HE-M
200
HE-M
220
HE-M
240
HE-M
260
HE-M
280
HE-M
300
HE-M
32
0/305
HE-M
320
HE-M
340
HE-M
360
HE-M
400
HE-M
450
HE-M
500
HE-M
550
HE-M
600
HE-M
650
HE-M
700
HE-M
800
HE-M
900
HE-M
1000
h [mm] 120 140 160 180 200 220 240 270 290 310 340 320 359 377
395 432 478 524 572 620 668 716 814 910 1008
b [mm] 106 126 146 166 186 206 226 248 268 288 310 305 309 309
308 307 307 306 306 305 305 304 303 302 302
HE-M DIN 1025-4 EURONORM 53-62 Cladding thickness with
protection on 3 sides at 5000 C
R15R30R45R60R90
R120R150R180R210
15151515
30 1530
45 3045
60 45
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K252.de Knauf Fireboard Steel Beam EncasementCladding
thickness
4
-
6
K25.en Knauf Vidifire A1 - Fire Protection Claddings of Beams
and ColumnsCo
lum
ns
IPE
100
IPE
120
IPE
140
IPE
160
IPE
180
IPE
200
IPE
220
IPE
240
IPE
270
IPE
300
IPE
330
IPE
360
IPE
400
IPE
450
IPE
500
IPE
550
IPE
600
h [mm] 100 120 140 160 180 200 220 240 270 300 330 360 400 450
500 550 600
b [mm] 55 64 73 82 91 100 110 120 135 150 160 170 180 190 200
210 220
IPE DIN 1025-5 EURONORM 19-57 Cladding thickness with protection
on 4 sides at 5000 C
R15R30R45R60R90
R120R150R180R210
151515
30 1530
45 3045
60 4560
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
4580
090
010
00
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K253.de Knauf Fireboard Steel Column EncasementCladding
thickness
5
Beam
s
IPE
80
IPE
100
IPE
120
IPE
140
IPE
160
IPE
180
IPE
200
IPE
220
IPE
240
IPE
270
IPE
300
IPE
330
IPE
360
IPE
400
IPE
450
IPE
500
IPE
550
IPE
600
h [mm] 80 100 120 140 160 180 200 220 240 270 300 330 360 400
450 500 550 600
b [mm] 46 55 64 73 82 91 100 110 120 135 150 160 170 180 190 200
210 220
IPE DIN 1025-5 EURONORM 19-57 Cladding thickness with protection
on 3 sides at 5000 C
R15R30R45R60R90
R120R150R180R210
151515
30 1530
45 3045
60 4560
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
45
800
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
20
200
180
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K252.de Knauf Fireboard Steel Beam EncasementCladding
thickness
4
-
7
K25.en Knauf Vidifire A1 - Fire Protection Claddings of Beams
and ColumnsКо
лони
IPN
100
IPN
120
IPN
140
IPN
160
IPN
180
IPN
200
IPN
220
IPN
240
IPN
260
IPN
280
IPN
300
IPN
320
IPN
340
IPN
360
IPN
380
IPN
400
IPN
425
IPN
450
IPN
475
IPN
500
IPN
550
IPN
600
h [mm] 100 120 140 160 180 200 220 240 260 280 300 320 340 360
380 400 425 450 475 500 550 600
b [mm] 50 58 66 74 82 90 98 106 113 119 125 131 137 143 149 155
163 170 178 185 200 215
Beam
s
IPN
80
IPN
100
IPN
120
IPN
140
IPN
160
IPN
180
IPN
200
IPN
220
IPN
240
IPN
260
IPN
280
IPN
300
IPN
320
IPN
340
IPN
360
IPN
380
IPN
400
IPN
425
IPN
450
IPN
475
IPN
500
IPN
550
IPN
600
h [mm] 80 100 120 140 160 180 200 220 240 260 280 300 320 340
360 380 400 425 450 475 500 550 600
b [mm] 42 50 58 66 74 82 90 98 106 113 119 125 131 137 143 149
155 163 170 178 185 200 215
IPN (I) DIN 1025 Cladding thickness with protection on 4 sides
at 5000 C
IPN (I) DIN 1025 Cladding thickness with protection on 3 sides
at 5000 C
R15R30R45R60R90
R120R150R180R210
R15R30R45R60R90
R120R150R180R210
151515
30 1530
45 3045
60 4560
151515
30 1530 15
45 3045 30
60 4560
Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
4580
0
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow flange
IPE 140
160
180
200
220
240
6545
60
Hot-rolled,
I
3530
30
140
120
160
2020
018
0
220
500
300
270
330
400
360
450
5540
550
600
5035
360
25
260
240
280
320
300
340
15
2520
400
450
Profile types
F120F180
F30F60F90
600
550
resistanceFire
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
bh
F120F180
F30F60F90
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
Cladding thickness with 4-sided fire exposure
Proof: ABP P-3067/071/12
The stated cladding thicknesses are valid for1-sided to 4-sided
fire exposure.
3045
3550
45
2020
45 45
Copyright by Knauf Gips KG
class
I sections
I sections
Fireboard cladding thickness
t
tt
K252 Knauf Fireboard Steel Beam EncasementCladding
thicknesses
F60 ≤ 170 ≤ 300≤ 48
F120F180
F90 ≤ 300≤ 180≤ 45
≤ 100≤ 50≤ 130 ≤ 270
≤ 300≤ 125≤ 80 ≤ 190
≤ 300
15F30
20 25 30 35 40 45
≤ 300≤ 260
50 55
15
30 25
20
40
2015
15
15
35
25
4530
40
4550
2535
20
30
15
20
1520
15
2535
40
1515
2025
2535
2030 35
25
Knauf Fireboard cladding for steel beams K252.de
Minimum thicknesses of Fireboard cladding depending on the U/A
ratio
classFire resistance with cladding thicknessU/A ratio of the
steel profile (m )-1 (mm)
The stated cladding thicknesses are valid for 1-sided to 4-sided
fire exposure
Cladding thickness with 3-sided exposure to fire All dimensions
in mm
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
Profile typesresistanceFire
500
narrow flangeHot-rolled,
I 140
120
160
200
180
220
360
260
240
280
320
300
340
400
450
600
550
58120
bh
66140
74160
82180
90200
98220
106240
113260
119280
125300
131320
137340 360 400 450 500 550 600
143 155 170 185 200 215
15
40455035 30
2520
2535
2015
F120F180
F30F60F90
600
I sectionsheavy design
wide flangeHot-rolled,
HEM 180
160
200
120
100
140
340
320
280
300
240
220
260
500
550
450
360
400
800
900
1000
650
700
600
600
Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled,
light designI sectionswide flange
400
360
450
320
280
300
340
500
550
240
220
260
HEA 120
100
140
180
160
200
medium flange I sections
Hot-rolled,
340
240
220
260
300
280
320
450
360
400
500
550
1000
800
900
650
700
800
650
700
1000
900
IPE 140
160
180
200
220
240
500
300
270
330
400
360
450
550
600
106120
126140
146160
166180
186200
206220
226240
248270
268290
288310
310340
309359 377 395 432 478 524 572 620 668 716 814 910 1008
309 308 307 307 306 306 305 305 304 303 302 302
100100
120120
140140
160160
180180
200200
220220
240240
260260
280280
300300
300320 340 360 400 450 500 550 600 650 700 800 900 1000
300 300 300 300 300 300 300 300 300 300 300 300
10096
120114
140133
160152
180171
200190
220210
240230
260250
280270
300290
300310 330 350 390 440 490 540 590 640 690 790 890 990
300 300 300 300 300 300 300 300 300 300 300 300
73140
bh
82160
91180
100200
110220
120240
135270
150300
160330
170360
180400
190450 500 550 600
200 210 220
bh
bh
bh
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
F120F180
F30F60F90
Proof: ABP P-3069/073/12
Copyright by Knauf Gips KG
class
I sections
I sections
K253.de Knauf Fireboard Steel Column EncasementCladding
thickness
5 Fireboard cladding thickness
t
tt
K253 Knauf Fireboard Steel Column EncasementCladding
thickness
≤ 230 ≤ 300F60 ≤ 100≤ 46
F120F180
F90≤ 280≤ 76
≤ 170≤ 68≤ 38
≤ 40 ≤ 140≤ 180≤ 110
≤ 35 ≤ 50
≤ 260 ≤ 300
All dimensions in mm
≤ 300≤ 150≤ 105 ≤ 210
Knauf Fireboard cladding for steel columns K253.de
classF30
Fire resistance with cladding thicknessU/A ratio of the steel
profile3015 20 25
≤ 300≤ 210
35 40 45(m )-1
6050 55(mm)
1520
303540
600
I sectionsheavy design
wide flangeHot-rolled,
3550
HEM 180
160
200
120
100
140
5560
1525
3040
15
340
320
280
300
240
220
260
50
500
550
450
360
400
45
800
900
1000
650
700
600
600
2535 30Hot-rolled,
180
140
160
120
100
200HEB
wide flangeHot-rolled, 25
30
light designI sectionswide flange
6040
400
360
450
320
280
300
340
500
550
240
220
260
15
2520
55 5035
65
HEA
25
120
100
140
180
160
200
medium flangeI sections
Hot-rolled,35
45
30
5560
340
15
240
220
260
300
280
320
20
450
360
400
500
550
253040
25
1000
800
900
650
700
4580
0
650
700
1000
900
500
for steel beams made of standard construction steel sections,
depending on the fire resistance classThe required Fireboard
cladding thickness for direct lining or lining with metal
substructure is stated
narrow
