RAK Materials Consultants Pte Ltd Certificate No. : LA-1988-0020-B Block 2024 #04-64 Bukit Batok Street 23 Issue No. : 12 Singapore 659529

Date : 14 May 2012 Page : 1 of 3

FIELD OF TESTING : Civil Engineering Testing

MATERIALS / PRODUCTS TESTED

TESTS / PROPERTIES STANDARD

METHODS / TECHNIQUES / EQUIPMENT

A. Concrete 1. Fresh Concrete 1. Sampling BS EN 12350-1 : 2009 SS 78 : Pt A1 : 1987 2. Slump BS EN 12350-2 : 2009 SS 78 : Pt A2 : 1987 3. Air content BS EN 12350-7 : 2009 SS 78 : Pt A6 : 1987 4. Density BS EN 12350-6 : 2009 SS 78 : Pt A7 : 1987 5. Flow BS EN 12350-5 : 2009 6. Making of test cubes BS EN 12390-2 : 2009 SS 78 : Pt A8 : 1987 7. Curing of test cubes SS 78 : Pt A11 : 1987 BS EN 12390-2 : 2009

2. Hardened Concrete 1. Compressive strength of cubes BS EN 12390-3 : 2009 2. Compressive strength of cores BS EN 12504-1 : 2009 3. Density BS EN 12390-7 : 2009 4. Water absorption BS 1881 : Pt 122 : 2011 SS 78 : Pt A22 : 1987

Certificate No. : LA-1988-0020-B Issue No. : 12 Date : 14 May 2012 Page : 2 of 3

MATERIALS / PRODUCTS TESTED

TESTS / PROPERTIES

STANDARD METHODS / TECHNIQUES /

EQUIPMENT

3. Hardened Concrete 1. Ultrasonic Pulse Velocity BS EN 12504-4 : 2004 (Non-destructive tests) ASTM C597-2009 SS 78 : Part B3 : 1992

2. Rebound Number BS EN 12504-2 : 2001 (Rebound Hammer) ASTM C805-2008 SS 78 : Part B2 : 1992

3. Penetration Resistance BS 1881 : Pt 207 : 1992 (Windsor Probe Test) ASTM C803M-2010

4. Electromagnetic cover BS 1881 : Pt 204 : 1988 measurement SS 78 : Part B4 : 1992

5. Corrosion Potentials ASTM C876-09

6. Pull-Off Test BS 1881 : Pt 207 : 1992

7. Carbonation BRE IP6/81

B. Aggregates, Coarse & Fine 1. Sampling BS 812 : Pt 102 : 1989 SS 73 : Pt 1: 1992

2. Particle size distribution BS 812 : Pt 103 : 1989 SS 73 : 1974 BS EN 933-1 : 1997

3. Silt and fines content (by BS 812 : Pt 103.1 : 1985 Decantation) SS 73 : 1974 BS EN 933-1 : 1997

4. Bulk density (compacted or SS 73 : 1974 uncompacted) BS EN 1097-3 : 1998

5. Relative density BS 812 : Pt 2 : 1995 SS 73 : 1974

6. Water absorption BS 812 : Pt 2 : 1995 SS 73 : 1974

Certificate No. : LA-1988-0020-B Issue No. : 12 Date : 14 May 2012 Page : 3 of 3

MATERIALS / PRODUCTS TESTED

TESTS / PROPERTIES

STANDARD METHODS / TECHNIQUES/

EQUIPMENT

7. Flakiness index BS 812 : Pt 105.1 : 1989 SS 73 : Pt 5.1 : 1992 BS EN 933-3 : 1997

8. Elongation index BS 812 : Pt 105.2 : 1990 SS 73 : 1974

9. Angularity number BS 812 : Pt 1 : 1975 SS 73 : 1974

10. Voids percentage BS EN 1097-3 : 1998 SS 73 : 1974

11. Aggregrate Impact Value BS 812 : Pt 112 : 1990 SS 73 : 1974

C. Piles 1. Low Strain Impact Integrity Testing ASTM D5882-07 of Deep Foundations

2. High Strain Dynamic Testing of ASTM D4945-08 Deep Foundations

Approved signatories

Mdm Saniah Bte Bakar - For all tests accredited except item C

Mr Ng Cheng Keyong - For all tests accredited

Note : This laboratory is accredited in accordance with the recognised International Standard ISO/IEC 17025:2005. A laboratory's fulfilment of the requirements of ISO/IEC 17025:2005 means the laboratory meets both the technical competence requirements and management system requirements that are necessary for it to consistently deliver technically valid test results. The management system requirements In ISO/IEC 17025:2005 (Section 4) are written in language relevant to laboratory operations and meet the principles of ISO 9001:2008 Quality Management Systems — Requirements and are aligned with its pertinent requirements.