Mr P A J Davis (Peter) (Chairman)
Mr B C A Melenhorst (Ben) (Vice-Chairman)
Mr P J Armstrong (Peter)
Mr P M Bayetto (Peter)
Mr P J Clarke (Peter)
Mr M W Ottrim (Mark)
Mr I Stewart (Ian)

Mr P A J Davis (Chairman)
Ullman & Nolan Consultants Pty Ltd

Qualifications:

Bachelor of Science in Engineering with Honours

Areas of Professional Expertise & Interest:

Peter Davis is a practising Geotechnical Engineer. He is a NATA signatory for a comprehensive range of tests covering concrete, aggregate and soil. Peter is also comfortable with the theory and practice of a number of other areas of testing (including asphalt). Peter has been a NATA assessor for more than 10 years and served previously on the CMT AAC Committee from 1989 to 1998.

Peter is a director of Ullman & Nolan Consulting Engineers, and has been involved with running the geotechnical division for the past 25 years. It is a multi-discipline consultancy that has historically operated between two and five NATA accredited CMT testing laboratories at any one time.

Mr B C A Melenhorst (Vice-Chairman)
Consultant

Areas of Professional Expertise & Interest:

Ben Melenhorst has been an assessor with NATA for 17 years. He has expertise in the following:

• Cementitious materials
• Concrete
• Aggregates
  

Mr P Armstrong
FRH Group Pty Ltd

Areas of Professional Expertise and Interest:

Peter has been an assessor with NATA since 1986 with expertise in the following:

• Bituminous Materials
• Aggregates
• Soils

Mr P M Bayetto
Koukourou Engineers/FMG Consulting/Research House

Qualifications:

Bachelor of Engineering
Fellow of the Institution of Engineers, Australia
Certified Practising Engineer
Registered Practising Engineer Queensland

Areas of Professional Expertise & Interest:

NATA assessor for 12 years with expertise in the following:

• Concrete
• Aggregates
• Bituminous Materials
• Soils
• Masonry units and segmental pavers

Current Professional Memberships:

Member of Standards Committee CE-009, Testing of Soils for Engineering Purpose and BD-025, Residential Slabs and Footings

Mr P J Clarke
Consultant

Qualifications:

BA Macquarie University 1975 – Geology major
M Eng Sc – University of NSW 1983

Areas of Professional Expertise & Interest:

• Soils and Aggregate testing
• Rock testing
• Quality Control and Quality Assurance associated with Construction Materials
• Preparation of National Standards for Rock and Aggregate
• Road Pavement Materials and Pavement Design
• Quarrying Activities
• Environmental Controls
• Current Professional Memberships:
• Fellow of the Institute of Quarrying

Qualifications:

Certificate in Civil Engineering

Areas of Professional Expertise & Interest:

Mark Ottrim’s previous experience covers soils, aggregates, concrete, asphalt, pavement testing and geotechnical areas. In addition to developing electronic testing systems, he currently has a lead role in test method development and the documentation of various laboratory systems and manuals.

Mark is employed by Main Road Queensland as a Laboratory Manager at its principal laboratory complex. He is also the NATA management representative for Construction Materials Testing, Methodology and Chemical Testing fields.

One of his current challenges in chairing a number of department wide technology groups is to develop better relations across industry (particularly in the road building area) through commitment to technology transfer, training and co-operation.

Mr I Stewart
Roads & Traffic Authority, NSW

Qualifications:

Bachelor of Science with Honours in Engineering Geology

Areas of Professional Expertise & Interest:

Ian Stewart has been a NATA assessor for six years and has expertise in the following:

• Concrete
• Aggregates
• Soils