screws were fixed at 30° tothe glass face and cradled the

Our Ref: ChiltllF09083
Chiltern House Stocking Lane Hughenden Valley
High Wycombe Buckinghamshire
HP14 4ND UK
1th November 2009
t +44 (0) 1494 569800 f +44 (0) 1494 564895
e [email protected]
w www.chilternfire.co.uk
Mr Matthew Thomas
Bostik Ltd
Common Road
Stafford
ST163EH
Dear Matthew
Re: Indicative Fire Resistance Test ChiltllF09083
This letter is to confirm the results of an indicative fire resistance test undertaken on 29th
October 2009.
The specimen consisted of a section of door leaf with a glazed aperture, hung within a door
frame.
Details of the test specimen
The numbers in brackets are reference to figures 1 & 2.
The overall size of the leaf was 1040mm high x 927mm wide x 44mm thick.
The leaf core comprised Halspan 44mm thick 630kg/m3 density particleboard (1), lipped on
the vertical edges only with 6mm thick **640kg/m3 Sapele (2). The leaf was hung within a
**510kg/m3 European redwood frame (3) on 2No Royde and Tucker Hi-Load 105 lift off type
steel hinges (4).
The frame comprised 32mm thick x 70mm deep European redwood, with a 12mm deep x
20mm wide European redwood planted (pinned) stop (5). A 15 x 4 type intumescent strip,
detail held in confidence by Chiltern International Fire Ltd (6) measuring 15mm wide x 4mm
thick, was fitted 15mm from the exposed face in the head and jambs of the frame. The
intumescent seal was fully interrupted by the hinge blades in the frame jamb. No further
intumescent protection was fitted.
The leaf aperture measured 899mm high x 769mm wide and the sight size measured
815mm high x 685mm wide. The leaf was glazed with 6mm thick Georgian wired glass (7)
with a 3mm expansion allowance to all edges.
The glazing beads were **640kg/m3 Sapele (8) and measured 25mm high x 22mm deep
including a 4mm x 4mm bolection return, and a 10° chamfer. 50mm long steel wood screws
(9) were fitted 50mm from the corners at 150mm centres, fixing the bead to the leaf. The
screws were fixed at 30° to the glass face and cradled the glass.
25mm wide x 3mm thick (uncompressed) Evo-stik Intustrip <lOP 24-1043" (10) was fitted
between the glass and bead on both faces.
A member of the BM TRADA Group of companies
Registered Number 3125010 England
Chiltern International Fire Ltd. Registered office: Chiltern House, Stocking Lane, Hughenden Valley, High Wycombe, Buckinghamshire, HP14 4ND UK.
No latch was fitted, although the door was wired shut at the equivalent handle position until
the intumescent seals had reacted and positive furnace pressure achieved.
*
**
Stated density, not verified by the laboratory.
Nominal density.
Figure 1 - Unexposed face elevation of test specimen
All measurements are in millimetres (mm)
1"
I.
I'.
150
r ~-
J".
l~
lJ
82()
1040
~-~--~-----685----------~-
'I
Figure 2 - Horizontal cross section of test specimen
Test for: Bostik Ltd
Ref: ChiltllF09083
Page 2 of 5
Test conditions
The furnace temperature was measured using the average of 4No furnace thermocouples.
The temperature and pressure were controlled to the conditions outlined in SS 476: Part 22:
1987.
The pressure at the head of the specimen was maintained at 9.5 Pa to simulate a leaf height
of 2.1m.
The ambient temperature of the laboratory at the start of the test was 20°C
The temperature of the specimen was measured by means of three thermocouples fixed to
the leaf and two thermocouples fixed to the frame, and two thermocouples fixed to the glass.
The temperatures were recorded and are shown graphically below:
Doorset temperature curve
800
Maximum glass
temperature
600
o
°
.
.
Maximum
door leaf
temperature
400
Mean door leaf
temperature
200
10
20
30
40
50
Time minutes
Test for: Bostik Ltd
Ref: ChiltllF09083
Page 3 of 5
Observations
Time
(minutes)
Comments
01.16
The glass is starting to crack.
03.36
There is smoke issuing from around the door to frame perimeter gaps.
10.12
Material is starting to drop from behind the bead at the top corners of the
glazing.
17.22
There is discolouration
only.
28.29
There is a glow visible at the top hinge position.
28.50
Parts of the glazing beads on the exposed face are starting to fall away from the
glazing.
37.51
There is a glow visible across the top of the glazing bead.
40.51
There is intermittent flaming at the top hanging corner of the leaf.
46.05
There is continuous flaming for more than 10 seconds at the top hinge position
to the top hanging corner of the leaf.
46.40
There is continuous flaming for more than 10 seconds across the top glazing
bead.
47.00
Test terminated.
Test for: Bostik Ltd
Ref: ChiltllF09083
and the smoke issue continues at the top hinge position
Page 4 of 5
Primary Observations
Time
(minutes)
Comments
46.05
There is continuous flaming for more than 10 seconds at the top hinge position
to the top hanging corner of the leaf.
46.40
There is continuous flaming for more than 10 seconds across the top glazing
bead.
47.00
Test terminated.
Whilst this report relates to an investigation, which utilised the exposure conditions given in
88476: Part 20: 1987, the full requirements of the test standard were not complied with. The
information is provided for the test sponsor's information and should not be used to
demonstrate performance against the standard nor compliance with regulatory requirements.
The test was not conducted under the requirement of UKA8 accreditation.
Mark Cummi
Head of Se ion - Fire Resistance
Test for: Bostik Ltd
Ref: ChiltllF09083
Ross Newman
Principal Test Engineer
Page 5 of 5