WHITE BOOK - GypLyner ENCASE - British Gypsum

398
GypLyner ENCASE
GypLyner framed structural steel encasement system
!
This section includes updated information, added
since it was first published in July 2009. Please see
the WHITE BOOK update document for details.
Last updated 25/05/2012
Cadbury offices,
Bournville, Birmingham

GypLyner ENCASE
GypLyner ENCASE is a steel encasement system which provides a
rapid method of cladding structural steel sections to provide up
to 180 minutes fire resistance. The system will protect all
universal column and beam sections with flange thicknesses
between 6mm and 28mm. As described in the British Gypsum
FIRE BOOK, GypLyner ENCASE will also protect many joist sections,
portal frames, and castellated beam sections. It can be used in
any type of building where encasement to structural steel is
required.
Applications
For the encasement of structural steel.
Sector
3
3
3
Office / commercial
Education
Custodial
B
A B
Gypframe
GL1 Lining
Channel
A
3
3
3
Gypframe GL10
GypLyner Steel
Framing Clip
Retail
Healthcare
High-rise multi-occupancy
3
3
3
Key facts
l Quick and simple to
install
l Lightweight support
framework constructed
from GypLyner
components
l Easy to box-out
l Up to 180 minutes fire
protection to structural
steel
Sport and leisure
Industrial
Auditoria
30 180
mins
GypWall RAPID and GypLyner RAPID dBENCASE Plus
399
93

GypLyner ENCASE
9
400
System components
Gypframe metal products
Board products
GL1 Lining Channel Length
GL3 Channel Connector
GL10 GypLyner Steel
Framing Clips
GA2 Steel Angle Length
Gyproc FireLine 1
2400, 2700mm
3000, 3600mm
3200mm
GFS1 Fixing Strap Length
or
Thickness 12.5, 15mm
Width 900, 1200mm
Gyproc DuraLine 1
Thickness 15mm
Width 1200mm
Glasroc F FIRECASE
Thickness 15, 20, 25, 30mm
Width 600, 1200mm
Glasroc F MULTIBOARD
2400mm
GFT1 Fixing ‘T’ Length
2400mm
Thickness 6, 10, 12.5mm
Width 1200mm
1 Moisture resistant boards are specified in intermittent wet use areas,
e.g. shower cubicles.
SPECSURE
L I F E T I M E S Y S T E M W A R R A N T Y
Fixing and finishing products
Gyproc Wafer Head Drywall Screws
For Gypframe metal-to-metal fixing less than
0.8mm thick (‘I’ studs less than 0.6mm thick).
Gyproc Drywall Screws
For fixing boards to Gypframe metal framing less
than 0.8mm thick (‘I’ studs less than 0.6mm thick).
Glasroc F FIRECASE Screws
For board-to-board fixing of Glasroc F FIRECASE, and
for board-to-metal fixing of Glasroc F FIRECASE and
Glasroc F MULTIBOARD.
Gyproc jointing materials
For seamless jointing.
www.british-gypsum.com
Thistle Multi-Finish or Thistle Board Finish
To provide a plaster skim finish.
Always use genuine branded British Gypsum components to qualify for SpecSure ® lifetime warranty
or
Thistle Durafinish
To provide improved resistance to accidental damage.
or
Thistle Spray Finish
Gypsum finish plaster for spray or hand application.

T 0844 800 1991 F 0844 561 8816 E bgtechnical.enquiries@bpb.com
Installation overview
Four-sided protection to steel columns
Gypframe GL10 GypLyner Steel Framing Clips are friction-fitted at
maximum 800mm centres onto the column flanges. Gypframe GL1
Lining Channel is located over the clips to form the steel framework.
Where lengths of Gypframe GL1 Lining Channel abut, GL10 clips are
located either side to provide support. Alternatively use Gypframe
GL3 Channel Connector to join the ends of Gypframe GL1 Lining
Channels together. Boards are cut to width and fixed to all framing
members using Gyproc Drywall Screws. Board joints on adjacent
sides are staggered by a minimum 600mm. Short lengths of
Gypframe GL1 Lining Channel, Gypframe GFS1 Fixing Strap, or
Gypframe GFT1 Fixing ‘T’ are cut to form horizontal noggings to back
board-end joints.
Three-sided protection to steel columns and beams
Gypframe GA2 Steel Angle is located to both sides of the wall / soffit
flange and secured using appropriate fixings at 600mm centres.
GL10 clips are friction-fitted at maximum 800mm centres to both
edges of the bottom flange ensuring that adjacent clips are in
alignment. Gypframe GL1 Lining Channel is located over the clips to
form the steel framework. Where lengths of Gypframe GL1 Lining
Channel abut, GL10 clips are located to either side to provide
support. Alternatively use Gypframe GL3 Channel Connector to join
the ends of Gypframe GL1 Lining Channels together.
Boards are cut to width and fixed to all framing members using
Gyproc Drywall Screws. Board joints on adjacent sides are staggered
by a minimum 600mm. Noggings are installed to support board
joints. Gyproc FireLine or Glasroc F MULTIBOARD boards are then
screw-fixed to the framing using Gyproc fixings.
Noggings of Gypframe GL1 Lining Channel are installed at 600mm
centres between adjacent Gypframe GL1 Lining Channels to form
supplementary framing.
Boxing out
If the encasement system is required to be enlarged, a ‘boxing out’
method using Gypframe studs and channels can be adopted. See
Construction details – 7 - 8.
Additional fire protection (columns only)
Where 180 minutes fire protection is required, Glasroc F FIRECASE is
specified as the cladding. Glasroc F FIRECASE is fixed through to the
metal framing.
For full installation details, refer to the British Gypsum
SITE BOOK, available to download from www.british-gypsum.com
For full installation details, refer to the British Gypsum SITE BOOK, available to download from www.british-gypsum.com
GypLyner ENCASE
401
9

GypLyner ENCASE
9
402
Design
Planning - key factors
GypLyner ENCASE steel encasement is suitable for protecting
structural steel sections with a section factor A/V (Hp/A) up to
260m-1 , calculated on the basis of box protection to three or four
sides as required. It will protect all universal column and beam
sections described in BS 4: Part 1, and many joist and castellated
beam sections.
Lining selection
The designer should follow the procedure below to determine the
thickness of cladding required:
1. Ascertain whether protection is required on three or four sides of
the section.
2. Find out what period of fire resistance is required.
3. Refer to the A/V (Hp/A) Tables 2 - 4. Locate the steel section to be
protected, listed by its size and mass per metre, and read off the
section factor A/V.
4. Refer to Tables 5 - 8. Locate the A/V value on the vertical scale on
the appropriate table. Read across the chart to the column relating
to the period of fire resistance required and read off the designated
thickness of the relevant cladding required to form the
encasement.
5. Select the type of board to be used.
For castellated sections and cellular beams please refer to the
Association for Specialist Fire Protection publication, ASFP Yellow
Book - ‘Fire Protection for Structural Steel in buildings’ for guidance,
available to download from www.asfp.org.uk
For improved durability and impact resistance, the outer layer of
Gyproc FireLine can be replaced with a layer of 15mm Gyproc
DuraLine.
Size of encasement
The minimum dimension of encasement required for three or
four-sided protection can be determined as shown in Table 1
below. These dimensions can be increased if the encasement needs
to be boxed-out to achieve a specific common dimension, or to
build out beyond fixing bolts, etc. See Construction details – 7 - 8.
Table 1 – The minimum dimension of encasements required for
three or four sided protection
Depth Size
Three-sided Overall steel section depth + 25mm +
the thickness of lining board
Four-sided Overall steel section depth + 50mm +
twice the thickness of lining board
Width Size
Three and Overall steel section width + 20mm +
four-sided the thickness of lining board
Please refer to section 3 - Basic principles of system design for general guidance
www.british-gypsum.com
Partition fixing
Partitions and wall linings can be fixed through to the metal
framework. See Construction details – 5 - 6.
Additional support
Where the steel section web or flange dimension exceeds 600mm,
additional support will be required for the cladding. Noggings of
Gypframe GL1 Lining Channel are installed at 600mm centres
between adjacent Gypframe GL1 Lining Channels to form
supplementary framing.
Water vapour resistance
Vapour control can be provided to encasements which form part of
an external wall lining by using Gyproc FireLine DUPLEX as the lining.
The water vapour resistance can be further improved by treating
the lining surface with two coats of Gyproc Drywall Sealer. Where
Glasroc F FIRECASE or Glasroc F MULTIBOARD forms the lining, vapour
control can be achieved by using a suitable proprietary paint
treatment.
Board finishing
Refer to section 13 – Finishing systems and decorative effects.

T 0844 800 1991 F 0844 561 8816 E bgtechnical.enquiries@bpb.com
Table 2 – Section factor A/V (Hp/A) of Universal Beams Table 3 – Section factor A/V (Hp/A) of Universal Columns
Serial size Mass / metre 3 sides 4 sides
mm kg m -1 m -1
914 x 419 388 45 55
343 50 60
914 x 305 289 60 65
253 65 75
224 75 85
201 80 95
838 x 292 226 70 80
194 80 90
176 90 100
762 x 267 197 70 85
173 80 95
147 95 110
686 x 254 170 75 90
152 85 95
140 90 105
125 100 115
610 x 305 238 50 60
179 70 80
149 80 95
610 x 229 140 80 95
125 90 105
113 100 115
101 110 130
533 x 210 122 85 95
109 95 110
101 100 115
92 110 125
82 120 140
457 x 191 98 90 105
89 100 115
82 105 125
74 115 135
67 130 150
457 x 152 82 105 120
74 115 130
67 125 145
60 140 160
52 160 180
406 x 178 74 105 125
67 115 140
60 130 155
54 145 170
406 x 140 46 160 185
39 190 220
356 x 171 67 105 125
57 125 145
51 135 165
45 155 185
356 x 127 39 170 195
33 195 225
305 x 165 54 115 140
46 130 160
40 150 180
305 x 127 48 125 145
42 140 160
37 155 180
305 x 102 33 175 200
28 200 225
25 225 260
254 x 146 43 120 150
37 140 170
31 160 200
254 x 102 28 170 200
25 190 220
22 215 250
203 x 133 30 145 180
25 165 210
203 x 102 23 175 210
178 x 102 19 190 230
152 x 89 16 190 235
127 x 76 13 195 240
Serial size Mass / metre 3 sides 4 sides
mm kg m -1 m -1
356 x 406 634 15 20
551 20 25
467 20 30
393 25 35
340 30 35
287 30 45
235 40 50
356 x 368 202 45 60
177 50 65
153 55 75
129 65 90
305 x 305 283 30 40
240 35 45
198 40 50
158 50 65
137 55 70
118 60 85
97 75 100
254 x 254 167 40 50
132 50 65
107 60 75
89 70 90
73 80 110
203 x 203 86 60 80
71 70 95
60 80 110
52 95 125
46 105 140
152 x 152 37 100 135
30 120 160
23 155 205
Table 4 – Section factor A/V (Hp/A) of Universal Joists
Serial size Mass / metre 3 sides 4 sides
mm kg m -1 m -1
254 x 203 82 70 90
254 x 114 37 130 155
203 x 152 52 85 105
152 x 127 37 90 120
127 x 114 30 100 130
127 x 114 27 110 140
114 x 114 27 100 135
102 x 102 23 105 140
89 x 89 19 105 145
76 x 76 13 140 185
Please refer to section 3 - Basic principles of system design for general guidance
GypLyner ENCASE
403
9

GypLyner ENCASE
9
404
Performance ( Refer to section 3 - Basic principles of system design)
Section factor A/V (Hp/A) m -1
260
240
220
200
180
160
140
120
100
80
60
40
20
EN
A
Table 5 – The 550°C chart to
ENV 13381-4 for selecting
Gyproc FireLine lining thickness
C
91
B
52
A
30 60
Fire protection (minutes)
90 120
Key - Thickness of Gyproc FireLine required1 System reference D150001
NB
B
217
A = 12.5mm
B = 15mm
C = 25mm (12.5mm + 12.5mm)
D = 30mm (15mm + 15mm)
E = 45mm (15mm + 15mm + 15mm)
D
154
C
E
89
D
52
C
Table 6 – The 550°C chart to
BS 476: Part 21 for selecting
the required Gyproc FireLine
lining thickness
NBS work section K10 - Plasterboard drylinings / partitions / ceilings
Section factor A/V (Hp/A) m -1
260
240
220
200
180
160
140
120
100
80
60
40
20
A
A = 12.5mm
B = 15mm
C
195
B
165
A
Fire protection (minutes)
www.british-gypsum.com
SPECSURE
L I F E T I M E S Y S T E M W A R R A N T Y
H
30 60 90 120
Key - Thickness of Gyproc FireLine required1 System reference D150001
C = 25mm (12.5mm + 12.5mm)
D = 27.5mm (15mm + 12.5mm)
E = 30mm (15mm + 15mm)
D
200
F = 37.5 (12.5mm + 12.5mm + 12.5mm)
G = 40mm (15mm + 12.5mm + 12.5mm)
H = 42.5mm (15mm + 15mm + 12.5mm)
For improved durability and impact resistance, the outer layer of Gyproc FireLine can be replaced with a layer of 15mm Gyproc DuraLine.
1 The fire protection is based on board joints being taped and filled, or skimmed according to British Gypsum’s recommendations.
SPECSURE
L I F E T I M E S Y S T E M W A R R A N T Y
BS
C
225
G
190
F
110
E

T 0844 800 1991 F 0844 561 8816 E bgtechnical.enquiries@bpb.com
Section factor A/V (Hp/A) m -1
260
240
220
200
180
160
140
120
100
80
60
40
20
BS
B
230
A
System reference D150002
A = 6mm
B = 10mm
C = 12.5mm
Table 7 – The 550°C chart to
BS 476: Part 8 for selecting
Glasroc F MULTIBOARD lining
thickness
D
180
30 60 90
Fire protection (minutes)
Key - Thickness of Glasroc F MULTIBOARD required 1
D = 20mm (10mm + 10mm)
E = 25mm (12.5mm + 12.5mm)
F = 30mm (10mm + 10mm + 10mm)
G = 37.5mm (12.5mm + 12.5mm + 12.5mm)
C
140
B
F
200
E
180
D
SPECSURE
L I F E T I M E S Y S T E M W A R R A N T Y
150
G
130
F
120
180
Fire protection (minutes)
NBS work section K10 - Plasterboard drylinings / partitions / ceilings
Section factor A/V (Hp/A) m -1
140
120
100
80
60
40
20
BS
140
D
90
80
B
60
A
C
System reference D120003
Table 8 – The 550°C chart to
BS 476: Part 21 for selecting
Glasroc F FIRECASE lining thickness
Key - Thickness of Glasroc F FIRECASE required 1
A = 35mm (20mm + 15mm)
B = 40mm (20mm + 20mm)
C = 45mm (25mm + 20mm)
D = 50mm (25mm + 25mm)
1 The fire protection is based on board joints being taped and filled, or skimmed according to British Gypsum’s recommendations.
SPECSURE
L I F E T I M E S Y S T E M W A R R A N T Y
GypLyner ENCASE
405
9

GypLyner ENCASE
9
406
Construction details
1 Four-sided column encasement - single layer
2
3
Three-sided beam encasement - single layer
1 Structural steel
2 Gyproc FireLine
3 Gypframe GL1 Lining Channel
4 Gypframe GL10 GypLyner Steel Framing Clip
3
1
4
5
2
1
5
2
4
3
4
5
6
7
Four-sided column encasement - double layer
Three-sided beam encasement - double layer
Gypframe GL1 Lining Channel nogging or Gypframe
GFT1 Fixing ‘T’ board joints
Gypframe GFS1 Fixing Strap
Gypframe GA2 Steel Angle
www.british-gypsum.com
7 7
3
1
4
6
2
1
6
2
4
3

T 0844 800 1991 F 0844 561 8816 E bgtechnical.enquiries@bpb.com
5
7
1
2
3
4
5
6
Column encasement and partition junction
Boxing out for columns up to 600mm wide using GypLyner IWL
Structural steel
Gyproc FireLine
Gypframe GL1 Lining Channel
Gypframe GL10 GypLyner Steel Framing Clip
Gypframe GL1 Lining Channel nogging or Gypframe
GFT1 Fixing ‘T’ board joints
Gypframe GFS1 Fixing Strap
1
2
5
9
8
10
4
3
10
1
10
2
6
6
8
Beam encasement and partition junction
Boxing out for columns over 600mm wide using GypLyner IWL
7 Gypframe GA2 Steel Angle
8 Gypframe GL1 Lining Channel nogging at 600mm centres
9 Gyproc plasterboard
10 Gypframe ‘C’ Studs
11 Gypframe Standard Floor & Ceiling Channel
12
Gypframe ‘I’ Stud at 600mm centres
7
1
5
2
8
4
2
11
9
10
10
12
1
10
8
GypLyner ENCASE
407
9