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Technology CentreCertificate of Test No. 21651 of 21

1. INTRODUCTION

This certificate of test describes impact tests carried out at the request of Telling ArchitecturalLimited on 14 January 2015 at the Technology Centre in Leighton Buzzard.

The test was carried out in accordance with CWCT TN75/76.

The tests were witnessed by:

R. Clark - Telling Architectural LtdD. Adams - Telling Architectural LtdM. Lopez - Telling Architectural LtdG. Sinclair - Wintech Engineering LtdM. Omeara - M. Price LtdD. Cahill - M. Price LtdM .Smith - M. Price LtdR. Long - M. Price LtdJ. Fraser - Berkeley HomesD. Hadley - Berkeley HomesR. Brunt - Berkeley Homes

2. SUMMARY OF TEST RESULTS

2.1 SAMPLE 1 – Direct fix to concrete wall

Impact energy(Nm)

Imapctor ExposureCategory

Safety Class Serviceability Class

3 Hard body F Low risk 3

6 Hard body E Low risk 3

10 Hard body B Low risk 3

350 Soft body E Negligible risk N/a

2.2 SAMPLE 2 – Support rails

Impact energy(Nm)

Imapctor ExposureCategory

Safety Class Serviceability Class

120 Soft body B N/a 1

500 Soft body B Moderate risk N/a


Note: Tables 1 to 5 are taken from CWCT TN75.

Table 1 – Exposure categories

Category Description Examples

A Readily accessible to public andothers with little incentive toexercise care. Prone tovandalism and abnormallyrough use

External walls of housingand public buildings invandal prone areas

Zone of wall upto 1.5 m abovepedestrian orfloor level

B Readily accessible to public andothers with little incentive toexercise care. Chances ofaccident occurring and ofmisuse

Walls adjacent topedestrian thoroughfaresor playing fields when notin category A

C Accessible primarily to thosewith some incentive to exercisecare. Some chance of accidentoccurring and of misuse

Walls adjacent to privateopen gardens. Backwalls of balconies

D Only accessible, but not near acommon route, to those withhigh incentive to exercise care.Small chance of accidentoccurring or misuse

Walls adjacent to smallfenced decorative gardenwith no through paths

E Above zone of normal impactsfrom people but liable toimpacts from thrown or kickedobjects

1.5 m to 6 m above pedestrian or floor level atlocation categories A and B

F Above zone of normal impactsfrom people and not liable toimpacts from thrown or kickedobjects

Wall surfaces at higher positions than thosedefined in E above


Table 2 – Soft body test energy

Exposure category Safety Serviceability

A No values are given as severity of potential vandalism needs to beassessed

B 500 Nm 120 Nm

C 500 Nm 120 Nm

D No values given as risk of impact is minimal

E 350 Nm 120 Nm

F 350 Nm 120 Nm

Table 3 – Hard body test energy

Exposure category Safety Serviceability

A No values are given as severity of potential vandalism needs to beassessed

B 10 Nm 10 Nm

C 10 Nm 6 Nm

D No values given as risk of impact is minimal

E 10 Nm 6 Nm

F 3 Nm 3 Nm


Table 4 - Classes for safety performance

Class Explanation/examples

Negligible risk No material dislodged during test, andNo damage likely to lead to materials falling subsequent to test, andNo sharp edges produced that would be likely to cause severe injury to a personduring impact, and

Cladding not penetrated by impactor.

Low risk Maximum mass of falling particle 50g, andMaximum mass of particle that may fall subsequent to impact 50g, andNo sharp edges produced that would be likely to cause severe injury duringimpact.

Moderate risk Maximum mass of falling particle less than 500g, andMaximum mass of particle that may fall subsequent to impact less than 500g, andCladding not penetrated by impact, andNo sharp edges produced that would be likely to cause severe injury duringimpact.

High risk Maximum mass of falling particle greater than 500g, orCladding penetrated by impact, orSharp edges produced that would be likely to cause severe injury during impact.


Table 5 - Classes for serviceability performance

Class Definition Explanation/Examples

1 No damage.No damage visible from 1m, andAny damage visible from closer then1m unlikely to lead to significantdeterioration.

2 Surface damage of an aestheticnature which is unlikely torequire remedial action.

Dents or distortion of panels not visiblefrom more than 5m (note visibility ofdamage will depend on surface finishand lighting conditions – damage willgenerally be more visible on reflectivesurfaces), andAny damage visible from closer than5m unlikely to lead to significantdeterioration.

3 Damage that may requireremedial action or replacementof components to maintainappearance or long termperformance but does notrequire immediate action.

Dents or distortion of panels visiblefrom more than 5m, orSpalling of edges of panels of brittlematerials, orDamage to finishes that may lead todeterioration of the substrate.

4 Damage requiring immediateaction to maintain appearanceor performance.

Remedial action may includereplacement of a panel but doesnot require dismantling orreplacement of supportingstructure.

Significant cracks in brittle materialse.g. cracks that may lead to parts of tilefalling away subsequent to test, or

Fracture of panels causing significantamounts of material to fall away duringtest.

5 Damage requiring moreextensive replacement than 4.

Buckling of support rails.


3. SAMPLE DESCRIPTION

Sample 1 comprised 18 tiles

Sample 2 comprised 9 tiles

The terracotta tiles measured 487 mm wide by 894 mm high and had a varying depth profile.

For sample 1, the tiles were support on horizontal rails fixed directly to the concrete wall.

For sample 2, the horizontal support rails were set away from the concrete wall withaluminium brackets and vertical rails.

Details of the system are shown in the drawings are included in the back of this certificate.

The test sample is shown in the following photographs.

PHOTO 6854

TEST SAMPLE 1


PHOTO 6902

TEST SAMPLE 2


4. CONTROLLED DISMANTLE

During the dismantling of the test sample, no additional damage on the rear of the tiles or thesupport frame was observed.

PHOTO 6891

VIEW ACROSS TOP OF TILE ON SAMPLE 1

PHOTO 6908

BOTH TEST SAMPLES DURING CONTROLLED DISMANTLE


5. TEST EQUIPMENT

The soft body impactor comprised a canvas spherical bag 400 mm in diameter filled with 3mm diameter glass spheres with a total mass of approximately 50 kg suspended from a cordat least 3 m long.

PHOTO 6888

SOFT BODY IMPACTOR

The hard body impactor was solid steel ball of 50.0 mm or 62.5 mm diameter andapproximate mass of 0.5 kg or 1.0 kg.

PHOTO 6882

HARD BODY IMPACTOR


6. TEST PROCEDURE

The impactor almost touched the face of the sample when at rest. It was swung in apendular movement to hit the sample normal to its face. The impact tests were performed atthe locations shown in Figures 1 and 2.

The impact energies for the soft body impactor were 120 Nm for serviceability and 350 Nm or500 Nm for safety. The impact energy for the hard body impactors was 3 Nm or 6 Nm forserviceability and 10 Nm for safety.

7. TEST RESULTS

FIGURE 1

SAMPLE 1 IMPACT TEST LOCATIONS

1

Hard body impact Soft body impact

2

5

11

43

8

7

10

9

6

12

13

15

14


FIGURE 2

SAMPLE 2 IMPACT TEST LOCATIONS

1

Soft body impact

2

5 4

3

8

7

6


Table 6 – Sample 1 test results

Note: Unless stated, all fragments that fell out during the impact tests were less than 10 g inweight.

Location Impactor Impact energy(Nm)

Observations

1 0.5 kg hard 3 Small chip in tile.

2 0.5 kg hard 3 Crack in edge of tile.

3 0.5 kg hard 6 Small circular mark on surface of tile.

4 0.5 kg hard 6 Minor chip from tile.

5 0.5 kg hard 3 Small mark on surface of tile.

6 0.5 kg hard 6 Corner cracks, minor fragments.

7 0.5 kg hard 6 Small chip in edge of tile.

8 1.0 kg hard 10 Small indent in panel.

9 1.0 kg hard 10 Edge crack, 10 g total fragments.

10 1.0 kg hard 10 Small chip in edge of tile.

11 1.0 kg hard 10 Cracks in corner of tile, minor fragments.

12 50 kg soft 350 No damage observed.





Table 7 – Sample 2 test results

Location Impact energy(Nm)

Observations

1 120 (x3) No damage observed.




5 500 No damage observed.


7 500 Small corner piece fell out, 91gfragment, 108g total.


PHOTO 6858

LOCATION 1 IMPACT – 3 Nm


PHOTO 6861


PHOTO 6863



PHOTO 6865


PHOTO 6868



PHOTO 6872


PHOTO 6886



PHOTO 6876

LOCATION 8 IMPACT

PHOTO 6877

LOCATION 9 IMPACT


PHOTO 6880

LOCATION 10 IMPACT

PHOTO 6883

LOCATION 11 IMPACT


PHOTO 6904

LOCATION 7 IMPACT (SAMPLE 2)

PHOTO 6905

LOCATION 7 IMPACT (SAMPLE 2)


PHOTO 6907

LOCATION 7 TILE FRAGMENTS (SAMPLE 2)

8. DRAWINGS

The following three un-numbered pages are copies of Telling Architectural Limited drawingsnumbered:

4694-T001 rev D,

4694-T002 rev D,

4694-T003 rev B.

END OF CERTIFICATE

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