Th e Building Test Centre - Libra Systems UK...according to procedure AP070 vs. 1.0. Customer: Libra Systems Ltd BTC 19993F: Page 8 of 29 Th e Building Test Centre British Gypsum East

Customer: Libra Systems Ltd BTC 19993F: Page 1 of 29

The Building Test Centre British Gypsum East Leake Loughborough Leicestershire, LE12 6NP Tel: (0115) 945 1564 Fax: (0115) 945 1562 Email: [email protected]

Customer: Libra Systems Ltd

Unit E Halesfield 10 Telford Shropshire TF7 4QP

Report Number: BTC 19993F A FIRE RESISTANCE TEST ON A LIBRA SYSTEMS RIGIDLOCK METAL FRAME SUSPENDED CEILING, CONDUCTED IN ACCORDANCE WITH BS 476: PART 22: 1987: CLAUSE 9.

Test Date: 17th August 2017

www.btconline.co.uk



TABLE OF CONTENTS

FOREWORD ....................................................................................................................... 3

REPORT AUTHORISATION .............................. ................................................................. 3

TEST REPORT AMENDMENTS ......................................................................................... 4

TEST CONSTRUCTION ...................................................................................................... 5

Description of Construction ....................... ............................................................................. 5

Test Construction Drawings ........................ ............................................................................ 6

TEST MATERIALS .................................... .......................................................................... 7

Ceiling Tiles ..................................... ......................................................................................... 7

Metal Components .................................. ................................................................................. 7

TEST PROCEDURE ............................................................................................................ 8

TEST RESULTS .................................................................................................................. 9

LIMITATIONS ....................................... ............................................................................... 9

TEST DATA ......................................... .............................................................................. 10

Observations ...................................... .................................................................................... 10

Furnace Temperature Graph ......................... ........................................................................ 12

Furnace Pressure Graph ............................ ............................................................................ 13

Unexposed Face Temperature Graph .................. ................................................................. 14

Unexposed Face Thermocouple Layout ................ ............................................................... 15

Unexposed Face Standard Five Temperature Data...... ........................................................ 16

Additional Unexposed Face Temperature Data ........ ............................................................ 18

PHOTOGRAPHS ............................................................................................................... 20

Exposed Face Prior to Test ........................ ........................................................................... 20

Unexposed Face Prior to Test ...................... ......................................................................... 21

Unexposed Face at 5 Minutes ....................... ........................................................................ 22

Expansion Joint at 12 Minutes ..................... ......................................................................... 23

Unexposed Face at 30 Minutes....................... ....................................................................... 24

Unexposed Face at 41 Minutes....................... ....................................................................... 25

Unexposed Face at 1 Hour........................... .......................................................................... 26

Unexposed Face at 70 Minutes, at Test Termination . .......................................................... 27

Unexposed Face at 70 Minutes, at Test Termination . .......................................................... 28

Exposed Face at 70 Minutes, at Test Termination ... ............................................................ 29



FOREWORD This test report details a fire resistance test conducted on a full scale suspended ceiling with Libra Systems Rigidlock metal framework clad with AMF Thermatex FeinStratos tiles and Armstrong Dune eVo Board tiles. The test sponsor was Libra Systems Ltd. The test specimen was installed by Alltone Ltd. The construction of the specimen took place on the 14th August 2017. The Building Test Centre played no role in the design or selection of materials comprising the test specimen. The test was witnessed by Mr Peter Allen of Libra Systems Ltd and Mr Chris Hobbs of CMH Design & Consultancy Ltd and was conducted on the 17th August 2017. “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.” (BS EN 1363-1: 2012, section 12.1)

REPORT AUTHORISATION The Building Test Centre will not discuss the content of this report without written permission from the test sponsor. The Building Test Centre retains ownership of the test report content but authorises the test sponsor to reproduce the report as necessary in its entirety only.

Report Author

Henri Wilford Ward BSc. (Hons.) Scientist

Authorised by

Paul Miller BSc. (Hons.) Fire Test Manager



TEST REPORT AMENDMENTS

Page Amendments Date

Report Amendments Author

Name Role

Amendments Authorised by Name Role



TEST CONSTRUCTION

Description of Construction The specimen was constructed in a refractory concrete lined steel restraint test frame with an opening of 4000mm (long) x 3000mm (wide). Libra angle trim was fixed at nominally 300mm centres, with 35mm Hilti HUS fire resistant fixings, to the perimeter of the test frame. Main runners, (Libra Rigidlock 24) were positioned at 1200mm centres, starting from the centre of the test frame spanning 4000mm. The central main runner having an expansion joint at mid-span and the two outer main runners had an expansion joint approximately 1200mm away from the viewing platform end of the specimen. These Main Runners were suspended using 2mm ceiling suspension wire through angle brackets secured to the joists. Cross Tee sections, (Libra Rigidlock 24) 1200mm long, were fitted at 600mm centres perpendicular to the three main runners at 600mm centres. Cross Tee sections, (Libra Rigidlock 24) 600mm long, were fitted at 600mm centres parallel to the 4000mm length of the test frame, between the 1200mm cross tees and the angle trim to form 600mm x 600mm modules. A mixture of AMF Thermatex FeinStratos Mineral Ceiling Tiles and Armstrong Dune eVo Mineral Ceiling Tiles, 600mm x 600mm x 15mm thick, were laid within the grid, as shown in Figure 1 . The edge channel was sealed on the underside using intumescent mastic.



Test Construction Drawings Ceiling Tile Layout

Figure 1 – Suspended Ceiling layout.

Viewing Platform



TEST MATERIALS

Ceiling Tiles

Armstrong Dune eVo Board

i) Nominally, 600mm (long) x 600mm (wide) x 15mm (thick), manufactured by Armstrong World Industries Limited and supplied by Libra Systems Limited.

Measured mass per tile: 1.36kg Measured thickness: 15.0mm Measured moisture content: 0.91%

AMF Thermatex FeinStratos

ii) Nominally, 600mm (long) x 600mm (wide) x 15mm (thick), manufactured by Knauf AMF GmbH & Co and supplied by Libra Systems Limited.

Measured mass per tile: 1.41kg Measured thickness: 15.0mm Measured moisture content: 1.12%

The surface densities and board thicknesses were calculated using the actual weight and size of a selection of tiles used in the test specimen. The moisture content was determined using samples dried to constant weight in an oven at 50°C.

Metal Components

iii) Three Steel ‘I’ beams supplied by The Building Test Centre.

iv) Libra Rigidlock 24 main runner, supplied by Libra Systems Limited. Measured mass per length: 1.24kg Measured weight per metre length: 0.34kg/m

v) Libra Rigidlock 24 1200mm cross tee, supplied by Libra Systems Limited. Measured mass per length: 0.38kg Measured weight per metre length: 0.32kg/m

vi) Libra Rigidlock 24 600mm cross tee, supplied by Libra Systems Limited. Measured mass per length: 0.18kg Measured weight per metre length: 0.31kg/m

vii) Libra 31 x 19 angle trim x 3000mm, supplied by Libra Systems Limited. Measured mass per length: 0.580kg

Measured weight per metre length: 0.19kg/m

Where measurements could not be taken then mass and dimensions were provided by the customer or the manufacturer e.g. from material labelling. Material information was recorded according to procedure AP070 vs. 1.0.



TEST PROCEDURE The test was conducted fully in accordance with BS 476: Part 22: 1987: Clause 9.

The asymmetrical specimen was subjected to fire from the underside this being the required direction of fire resistance as specified in BS 476: Part 22: 1987: Clause 9.

Where areas of the test specification are ambiguous, or open to interpretation, the Fire Test Study Group Resolutions 43, 50, 53, 70, 71, 72, 77, 79, 83 have been followed (where appropriate). These Resolutions provide the basis of common agreements between the fire test laboratories, which are members of this group.

The test procedure used was 476/22/9, issue 2.

The ambient temperature at the commencement of the test was 22°C.

The furnace pressure was set to control at 16.7 ±2 Pa positive with respect to atmosphere, 150mm below the specimen, except during the first 5 minutes of the test. Furnace pressure data is shown in Figure 3 .



TEST RESULTS The requirement of the standard was satisfied for the following periods:

Integrity

Sustained Flaming 70 minutes, no failure.

6mm Gap Gauge 70 minutes, no failure.

25mm Gap Gauge 70 minutes, no failure.

Cotton Pad 70 minutes, no failure.

Insulation 8 minutes.

Test Terminated 70 minutes, at the request of the sponsor.

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 5 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.



TEST DATA

Observations All observations refer to the exposed face unless stated. Observers: Unexposed face: Lynda Cooper & James Lucas Exposed face: Liam Woodford

Time Observations Hours Minutes

0 00 Test started.

0 04 Unexposed Face Expansion joints had begun activating. Centre track had pushed up and out of the angle at the end.

0 05 Unexposed Face Splice area of grid pushed upwards between rows A+B on the far left-hand side of the specimen when viewed from viewing platform.

0 08 INSULATION FAILURE. The mean temperature rise of the standard five thermocouples exceeded 140°C.

0 09 Unexposed Face The temperature rise of thermocouples 22 & 24, positioned at the centre of the specimen and the top left hand corner when viewed from the viewing platform, had exceeded 180°C. Tiles popped up either side of the expansion joint.

0 10 Metal ‘T’ sections had buckled slightly and had begun to discolour. Unexposed Face Tiles had begun to crack on the first row of AMF boards.

0 15 Unexposed Face All tiles were discoloured.

0 20 No visible change.



Time Observations Hours Minutes

0 30 Metal ‘T’ section had sagged down into the furnace along 4m metal ‘T’ sections. Unexposed Face No visible change.

0 40 No visible change. Unexposed Face Glowing visible from perimeter of tiles from the metal grid.

0 50 No visible change. Unexposed Face Glow visible on steel.

1 00 No visible change. Unexposed Face Further discolouration of tiles around edges of specimen.

1 05 Unexposed Face Further discolouration of all tiles.

1 10 TEST TERMINATED at the request of the sponsor.



Furnace Temperature Graph

Figure 2 – Furnace temperature graph.

Mean Furnace Standard Furnace

Tem

pera

ture

(°C

)

Time (minutes)

0

200

400

600

800

1000

0 20 40 60 80



Furnace Pressure Graph

Figure 3 – Furnace pressure graph.

Pre

ssur

e (P

a)

Time (minutes)

0

5

10

15

20

0 20 40 60 80



Unexposed Face Temperature Graph

Figure 4 – Unexposed face temperature graph.

Mean Standard Five Maximum Unexposed

Tem

pera

ture

Ris

e (°

C)

Time (minutes)

0

100

200

300

400

0 20 40 60 80



Unexposed Face Thermocouple Layout

Thermocouple 22 is moved 50mm to the right of the centre of the specimen, as it cannot be placed over the metalwork. Thermocouple 25 is added 20mm to the left of the centre of the specimen. Figure 5 – Unexposed face thermocouple layout.



Unexposed Face Standard Five Temperature Data

Time (minutes)

Temperature Rise (°C) Thermocouple

No. 20 Thermocouple

No. 21 Thermocouple

No. 22 Thermocouple

No. 23 Thermocouple

No. 24 Mean Standard

Five

0 0 0 0 0 0 0 1 3 4 4 3 4 4 2 14 15 18 17 18 16 3 28 27 31 31 33 30 4 41 39 42 42 45 42 5 54 51 57 53 55 54 6 66 62 73 63 72 67 7 85 80 100 77 104 89 8 110 101 127 101 137 115 9 132 124 159 125 171 142 10 160 151 185 154 202 170 11 182 176 204 181 226 194 12 198 197 219 203 245 212 13 210 214 231 221 261 227 14 221 225 241 236 277 240 15 231 236 253 248 286 251 16 241 247 261 256 287 258 17 247 258 266 259 279 262 18 250 262 267 257 258 259 19 250 268 267 250 244 256 20 249 269 266 239 235 252 21 245 266 264 230 232 247 22 238 261 260 225 233 243 23 231 256 256 223 233 240 24 228 250 255 223 236 238 25 228 247 255 224 237 238 26 228 245 255 225 240 239 27 231 247 255 227 243 241 28 233 250 257 229 246 243 29 234 251 258 232 247 244 30 236 254 260 234 250 247 31 242 254 263 236 254 250 32 248 255 264 238 256 252 33 251 258 265 240 259 255 34 250 260 269 241 261 256 35 252 263 269 243 263 258 36 253 264 268 245 265 259 37 253 263 270 247 265 260



Time (minutes)


No. 20 Thermocouple

No. 21 Thermocouple

No. 22 Thermocouple

No. 23 Thermocouple

No. 24 Mean Standard

Five

38 254 263 270 248 267 260 39 257 263 273 250 269 262 40 260 264 275 252 271 264 41 263 266 278 253 272 266 42 267 268 280 253 273 268 43 270 271 282 255 275 271 44 273 274 287 256 276 273 45 276 277 287 256 279 275 46 277 278 288 256 280 276 47 279 280 295 258 279 278 48 281 282 297 259 281 280 49 281 284 296 259 282 280 50 282 286 296 262 285 282 51 284 288 296 263 287 284 52 284 291 297 265 289 285 53 284 293 299 267 292 287 54 285 295 299 269 294 288 55 286 297 300 271 295 290 56 286 298 302 273 296 291 57 287 298 304 273 295 291 58 288 298 303 274 296 292 59 290 299 304 275 300 294 60 292 301 305 277 301 295 61 294 303 306 277 302 296 62 295 305 306 279 302 297 63 296 306 308 279 304 299 64 298 308 309 280 305 300 65 299 308 310 281 305 301 66 298 308 311 283 306 301 67 302 309 314 284 306 303 68 303 311 313 284 307 304 69 303 312 314 284 308 304 70 303 312 315 285 308 305

Figures highlighted in red indicated the minute in which the temperature rise exceeded 180°C and the mean temperature rise exceeded 140°C. See figure 5 for the location of the thermocouples.



Additional Unexposed Face Temperature Data

Time (minutes)


No. 25 Maximum

Unexposed

0 0 0 1 5 5 2 16 18 3 28 33 4 42 45 5 56 57 6 74 74 7 98 104 8 126 137 9 160 171 10 189 202 11 210 226 12 227 245 13 238 261 14 250 277 15 259 286 16 265 287 17 268 279 18 269 269 19 270 270 20 271 271 21 269 269 22 265 265 23 261 261 24 259 259 25 258 258 26 259 259 27 262 262 28 265 265 29 267 267 30 271 271 31 273 273 32 273 273 33 275 275 34 277 277 35 278 278 36 279 279



Time (minutes)


No. 25 Maximum

Unexposed

37 281 281 38 282 282 39 285 285 40 287 287 41 291 291 42 295 295 43 297 297 44 301 301 45 301 301 46 303 303 47 305 305 48 306 306 49 306 306 50 307 307 51 307 307 52 309 309 53 312 312 54 312 312 55 314 314 56 314 314 57 314 314 58 316 316 59 316 316 60 316 316 61 317 317 62 318 318 63 318 318 64 320 320 65 319 319 66 320 320 67 322 322 68 322 322 69 325 325 70 325 325

See figure 5 for the location of the thermocouples.



PHOTOGRAPHS

Exposed Face Prior to Test



Unexposed Face Prior to Test



Unexposed Face at 5 Minutes



Expansion Joint at 12 Minutes









Unexposed Face at 1 Hour



Unexposed Face at 70 Minutes, at Test Termination



Unexposed Face at 70 Minutes, at Test Termination



Exposed Face at 70 Minutes, at Test Termination

Documents

Th e Building Test Centre - Libra Systems UK...according to procedure AP070 vs. 1.0. Customer: Libra Systems Ltd BTC 19993F: Page 8 of 29 Th e Building Test Centre British Gypsum East