Report Number BTC 12024F

Transcription

1 Report Number BTC F A FIRE RESISTANCE TEST ON A GYPROC GYPWALL PARTITION INCORPORATING A DOUBLE LAYER OF mm SOUNDBLOC EACH SIDE OF S STUDS, CONDUCTED IN ACCORDANCE WITH BS EN 4:999. Test Date: 9 th June Customer: Leicestershire LE 6HX Customer: BTC F: Page of

2 A FIRE RESISTANCE TEST ON A GYPROC GYPWALL PARTITION INCORPORATING A DOUBLE LAYER OF mm SOUNDBLOC EACH SIDE OF S STUDS, CONDUCTED IN ACCORDANCE WITH BS EN 4:999. TABLE OF CONTENTS FOREWORD REPORT AUTHORISATION TEST CONSTRUCTION 4 TEST MATERIALS 6 Gyproc SoundBloc 6 Metal Components 6 Fasteners 6 Jointing Material 6 TEST PROCEDURE 7 TEST RESULTS 7 LIMITATIONS 8 TEST DATA 9 Observations 9 Furnace Temperature Graph Unexposed Face Temperature Graph 4 Pressure Graph Unexposed Face Layout 6 Unexposed Face Standard Five Temperature Data 7 Additional Unexposed Face Temperature Data Additional Internal Temperature Data 6 Specimen Lateral Deflection PHOTOGRAPHS Customer: BTC F: Page of

3 FOREWORD This test report details a fire resistance test conducted on a sheet and stud partition system. The test sponsor was. The test specimen was installed by British Gypsum. The construction of the specimen took place between the st and nd May. designed and selected the materials comprising the test specimen. The test date was carried out on the 9 th June. This report details the method of construction, the test conditions and the results obtained when the specific element of construction described herein was tested following the procedures outlined in EN, and where appropriate EN. Any significant deviation with respect to size, constructional details, loads, stresses, edge or end conditions other than those allowed under the field of direct application in EN 4 is not covered by this report. Because of the nature of fire resistance testing and the consequent difficulty in quantifying the uncertainty of measurement of fire resistance, it is not possible to provide a stated degree of accuracy of the result. REPORT AUTHORISATION Report Author Authorised by Brian Willson Test Report Writer Eur Ing. Paul Howard BSc. (Hons.), CEng., MIOA Head of Laboratory will not discuss the content of this report without written permission from the test sponsor. retains ownership of the test report content but authorises the test sponsor to reproduce the report as necessary in its entirety only. Customer: BTC F: Page of

4 TEST CONSTRUCTION The specimen was constructed in a refractory concrete lined steel restraint frame having an opening of mm high x mm wide. Gypframe C channels were fixed to the head and base of the test aperture at 6mm centres with 6mm Hilti Hus fixings. Gypframe S studs were positioned at 6mm centres between the channels. The right hand stud viewed from unexposed face was not fixed to the perimeter test frame, but the gap between the stud and the lining was filled with a mm Rockwool Firebatt gasket. The left hand stud was fixed to the test frame at 6mm centres with 6mm Hilti Hus fixings. The framework was lined on both sides with a double layer of mm Gyproc SoundBloc. The inner layer was fixed around the perimeter with mm Gyproc Drywall screws at mm centres. The outer layer was fixed around the perimeter and within the field of the board with 4mm Gyproc Drywall screws. All boards were staggered between layers. Horizontal joints were positioned mm from the base for the outer layers on both the exposed and unexposed faces of the construction. Horizontal joints were positioned mm from the base for the inner layers on both the exposed and unexposed faces of the construction. A Gypframe GFS fixing strap was used behind the horizontal board joints in the outer layers. All joints were taped and filled using Gyproc Paper Joint Tape and Gyproc Joint Filler. All screw heads were spotted using Gyproc Joint Filler. Customer: BTC F: Page 4 of

5 Figure. Crosssection through the partition. The descriptions of individual components making up the test specimen were provided by the customer and were checked for accuracy wherever possible. Customer: BTC F: Page of

6 TEST MATERIALS Gyproc SoundBloc Nominally, mm (long) x mm (wide) x mm (thick), Gyproc SoundBloc Wallboard manufactured and supplied by ex Works. Measured surface density:. kg/m. Measured thickness: 4.76 mm. Board identification numbers: 8: Measured moisture content:.% The surface density and board thickness were calculated using the actual weight and size of a selection of boards used in the test specimen. The moisture content of the board was determined using samples dried to a constant weight in an oven at 4 o C. Metal Components (i) (ii) (iii) Gypframe S metal studs. Manufactured from galvanised mild steel nominally.mm thick using the Ultrasteel process. Gypframe C metal channel. Manufactured from galvanised mild steel nominally.mm thick. Gypframe GFS fixing strap manufactured from galvanised mild steel nominally.mm thick. All metal components supplied by. Fasteners (i) (ii) (iii) mm Gyproc Drywall screws supplied by. 4mm Gyproc Drywall screws supplied by. 6mm Hilti Hus fixings supplied by Hilti Limited. Jointing Material (i) (ii) Gyproc Joint Filler supplied by. Gyproc Paper Tape supplied by. Customer: BTC F: Page 6 of

7 TEST PROCEDURE The test was conducted fully in accordance with BS EN 4:999. The specimen was subjected to fire from one side, as specified in BS EN 4:999. As the test specimen is considered to be symmetrical one test is adequate to cover the fire resistance performance in both directions. The test procedure used was EN 4 Issue. The ambient temperature at the commencement of the test was o C. The furnace pressure was maintained at 8 ± Pa positive with respect to atmosphere, at the top of the specimen, except during the first minutes of the test. The test conditions did not meet the full requirements of BS EN :999 as the furnace linings and test frame stiffness did not fully comply. The test centre is of the opinion that these deviations from the documented method will not unduly effect the result of the test. TEST RESULTS The requirements of the standard were satisfied for the following periods: Integrity: minutes (6mm x mm gap gauge) minutes (mm gap gauge) Insulation: 99 minutes (thermocouple N o exceeded 8 deg C.) The test was terminated at minutes. Customer: BTC F: Page 7 of

8 LIMITATIONS The results only relate to the behaviour of the specimen of the element of construction under the particular conditions of test; they are not intended to be the sole criteria for assessing the potential fire performance of the element in use nor do they reflect the actual behaviour in fires. The specification and interpretation of fire test methods are the subject of ongoing development and refinement. Changes in associated legislation may also occur. For these reasons it is recommended that the relevance of test reports over years old should be considered by the user. The laboratory that issued the report will be able to offer, on behalf of the legal owner, a review of the procedures adopted for a particular test to ensure that they are consistent with current practices, and if required may endorse the test report. Customer: BTC F: Page 8 of

9 TEST DATA Observations Observers: Unexposed face R Evans / L Cooper Exposed face K Hall hrs Observations mins All observations refer to the exposed face unless otherwise stated. Test Started 4 Jointing material started to fall away from the horizontal and vertical joints. Vertical crack on lower centre board 6mm in from joint, 6mm long open to approximately mm. Vertical crack on lower centre board (top left hand corner) approximately mm from left hand joint and approximately mm long. 6 Vertical cracking occurred on the lower centre board. 8 Vertical cracking near the top left of the lower right hand board. Horizontal cracking on the upper right hand board. Vertical cracking approximately mm in length on upper right hand board. Vertical joints where exposed open to 8mm. Horizontal joint where exposed open to 8mm. Vertical crack in lower centre board 6mm in from joint, 6mm long, now open to mm. Vertical cracking the full height of left hand lower board. More taper cracking open to approximately mm on lower centre board. Vertical cracking to upper left and upper centre boards. Horizontal cracking open to mm on all three lower boards. Vertical cracking open to mm on lower centre board. Customer: BTC F: Page 9 of

10 hrs Observations mins All observations refer to the exposed face unless otherwise stated. Horizontal and vertical joints open to approximately mm. Board fall from lower centre board adjacent to right hand joint approximately mm long x mm wide. 7 Cracking of inner layer where exposed. 9 Board fall from lower left hand board approximately mm x 6mm and from lower centre board, top left hand side approximately 6mm x 6mm. Inner vertical joint open to mm, studs exposed. Inner layer board bowing into cavity between studs to full depth of stud. 4 Inner layer board fall from top left of upper centre board. Vertical cracking of inner layer of unexposed side where exposed approximately mm x mm wide. 8 Voids in board core showing as popping of paper liner occurred when heated. Inner layer board fall on right hand side of upper centre board approximately 6mm wide x mm long. Inner layer board fall, left hand side of upper right hand board approximately 6mm x mm. Stud distortion at midheight to approximately mm x mm long on all exposed studs Unexposed face The bonding material came away bottom right hand corner of specimen. Customer: BTC F: Page of

11 Observations hrs mins All observations refer to the exposed face unless otherwise stated. Stud distortion at height to mm x mm on all exposed studs. Vertical cracking exposed the board core approximately mm either side of the studs where exposed, open to approximately mm. Unexposed face Screwhead discolouration on right hand vertical joint at / height. 8 Unexposed face Furnace glow was visible from midheight at the free end. 9 Horizontal cracking in inner layer unexposed open to approximately mm and 6mm long. Unexposed face Screwhead discolouration on left hand vertical joint above midheight. Horizontal and vertical cracking to approximately 8mm. Unexposed face Horizontal crack under paper liner, approximately mm long, 8mm high on centre board. Board fall unexposed face inner layer at approximately high, mm in from free end (approximately mm x mm). Unexposed face Horizontal crack under paper liner, approximately mm long, mm high on right hand board. Board fall, total area approximately 6mm wide x mm long. Voids in board core showing on outer layer unexposed face as popping of paper liner occurred. Unexposed face Discolouration on centreboard centre at midheight. Customer: BTC F: Page of

12 Observations hrs mins All observations refer to the exposed face unless otherwise stated. Unexposed face INSULATION FAILURE. The temperature rise on thermocouple No. exceeded 8 o C. 4 Unexposed face A cotton pad was applied to horizontal crack on centre board at 8mm height, midwidth of specimen. It did not glow or ignite. 4 Unexposed face The horizontal crack on centre board at 8mm height midwidth of specimen was now open approximately 4mm. A cotton pad was again applied but did not glow or ignite. Paper liner glowing. 4 Unexposed face INTEGRITY FAILURE. 6mm x mm gap gauge at horizontal crack on centre board at 8mm height midwidth of specimen through to furnace. INTEGRITY FAILURE. mm diameter gap visually observed at same position. TEST TERMINATED. Customer: BTC F: Page of

13 Furnace Temperature Graph 9 7 Temperature C Mean Furn Temp minutes Standard Furn Temp Figure. Furnace temperature graph Customer: BTC F: Page of

14 Unexposed Face Temperature Graph 4 Temperature C Mean St Temp minutes Max Unex Temp Figure. Unexposed face temperature graph. Customer: BTC F: Page 4 of

15 Pressure Graph Pressure Pa minutes Figure 4. Pressure graph. Customer: BTC F: Page of

16 Unexposed Face Layout mm down and mm in from vertical joint mm down at midwidth of specimen 6 mm down at centre of stud mm above horizontal joint at midwidth KEY: Standard Five mm down, mm from vertical joint and mm from horizontal joint Standard Five Standard positions Additional positions Outer Layer Board Joints Inner Layer Board Joints Stud positions mm from fixed edge and at midheight of the specimen mm from vertical joint at midheight of specimen Centre of stud at midheight mm from free edge at midheight of the specimen Standard Five Standard Five Standard Five Free end Exposed Face Internal s at mm height Left Stud Right Stud Unexposed Face Figure. Unexposed face thermocouple layout. Customer: BTC F: Page 6 of

17 Unexposed Face Standard Five Temperature Data Temperature Rise ( o C) (mins) No No No No No Customer: BTC F: Page 7 of

18 Temperature Rise ( o C) (mins) No No No No No Customer: BTC F: Page 8 of

19 Temperature Rise ( o C) (mins) No No No No No See figure for thermocouple layout Customer: BTC F: Page 9 of

20 Additional Unexposed Face Temperature Data Temperature Rise (ºC) (mins) No No No No No No Customer: BTC F: Page of

21 Temperature Rise (ºC) (mins) No No No No No No Customer: BTC F: Page of

22 Temperature Rise (ºC) (mins) No No No No No No See figure for thermocouple layout. Customer: BTC F: Page of

23 Additional Unexposed Face Temperature Data (continued) Temperature Rise (ºC) (mins) No No No Customer: BTC F: Page of

24 Temperature Rise (ºC) (mins) No No No Customer: BTC F: Page of

25 Temperature Rise (ºC) (mins) No No No See figure for thermocouple layout. Figures shown in red indicate insulation failure. Customer: BTC F: Page of

26 Additional Internal Temperature Data Actual Temperature (ºC) Stud Stud (mins) Hot Flange No Web No Cold Flange No Hot Flange No Web No Cold Flange No Customer: BTC F: Page 6 of

27 Actual Temperature (ºC) Stud Stud (mins) Hot Flange No Web No Cold Flange No Hot Flange No Web No Cold Flange No Customer: BTC F: Page of

28 Actual Temperature (ºC) Stud Stud (mins) Hot Flange No Web No Cold Flange No Hot Flange No Web No Cold Flange No Customer: BTC F: Page of

29 Actual Temperature (ºC) Stud Stud (mins) 4 Hot Flange No. Web No. Cold Flange No. Hot Flange No. Web No. Cold Flange No. See Figure for the location of the thermocouples. No. did not work after 89 minutes. No. did not work after 9 minutes. No. did not work after 9 minutes. No. did not work after 88 minutes. No. did not work after 86 minutes. No. did not work after 8 minutes. Customer: BTC F: Page of

30 Specimen Lateral Deflection Deflection (mm) (mins) Centrally On free end Customer: BTC F: Page of

31 Deflection (mm) (mins) Centrally On free end Customer: BTC F: Page of

32 Deflection (mm) (mins) Centrally On free end The deflection was recorded at the approximate centre of the specimen and at midheight on the free edge. Positive readings indicate deflection into the furnace. The deflection transducers were removed after 88 minutes. Customer: BTC F: Page of

33 PHOTOGRAPHS Photo. Exposed face prior to test. Customer: BTC F: Page of

34 Photo. Unexposed face prior to test. Customer: BTC F: Page of

35 Photo. Insulation failure on the centre board at hour minutes. The temperature rise on thermocouple No exceeded 8 o C. Customer: BTC F: Page of

36 Photo 4. View of the unexposed face after test termination showing area of insulation and integrity failure. Customer: BTC F: Page of