• Dr. Trevor Neville Haas, Pr. Tech. Eng.


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    • Abstract: Dr. Trevor Neville Haas, Pr. Tech. Eng.79 Wessel Lourens Drive, Vredekloof, Brackenfell, 7560, SOUTH AFRICACell Phone Number: 072 113 6923 ~ Email [email protected]

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Dr. Trevor Neville Haas, Pr. Tech. Eng.
79 Wessel Lourens Drive, Vredekloof, Brackenfell, 7560, SOUTH AFRICA
Cell Phone Number: 072 113 6923 ~ Email [email protected]
Personal Information
Date of Birth 06 February 1971 (39 years old)
Nationality South African
I.D. Number 710206 5133 081
Marital Status Married with 3 dependants
ECSA Registration
Registration category Professional Engineering Technologist, Pr. Tech. Eng.
Registration Number 200270073
Education - Tertiary
National Diploma: Civil Engineering ~ 1991 ~ Peninsula Technikon ~ South Africa
National Higher Diploma: Civil Engineering ~ 1992 ~ Peninsula Technikon ~ South Africa
Master of Science Degree: Civil Engineering Specializing in Structural Engineering ~ 1999 ~ Southern Illinois
University at Carbondale, U.S.A. (for subjects with grades see appendix 1)
Doctor of Philosophy (Ph.D.): Civil Engineering ~ 2007 ~ Stellenbosch University ~ South Africa
Dissertation Title: Numerical (FEA) Evaluation of Crane End Buffer Impact Forces
Promoters. P. Maincon and Prof. P. Dunaiski
Employment
Position Research Assistant
Employer Cape Peninsula University of Technology (Formerly Peninsula
Technikon)
Duration January 1993 to June 1993
Responsibilities
• Set up Triaxial Test from scratch
• Help students with computer software (AutoCAD, Excel, Roadmate, Pipemate)
• Prepare tutorials for Applied Mechanics and Theory of Structures students
Trevor Haas’ CV Page 1 of 7
Employment - Continue
Position Lecturer, Department of Civil Engineering
Employer Walter Sisulu University of Science and Technology (formerly Transkei
Technikon and Eastern Cape Technikon)
Duration July 1993 to August 1999
Responsibilities
• Lecture junior and senior diploma students
• Assist with syllabus design and development of various subjects
• Prepare teaching aids
• Conduct tutorials
• Implement self-evaluation systems
• Attend seminars and conferences
Subjects taught
Applied Mechanics I, Surveying I and II, Construction Materials I, Drawing I and II,
Construction Methods I, Water Engineering II, Documentation III
Position Senior Lecturer, Department of Civil Engineering
Employer Walter Sisulu University of Science and Technology (formerly Transkei
Technikon and Eastern Cape Technikon)
Duration September 1999 to January 2008
Responsibilities
• As above and in addition
• Act as subject head/course leader in Structural Analysis
• Lecture to senior diploma students
• Advise H.O.D. regarding developments in Structural Analysis courses
• Upon returning from sabbatical in 2007, investigating the viability of the B-Tech degree (Structural
Engineering) for possible implementation in 2008. This entails subject development, recruitment of
professionally registered industry staff to assist in course development and teaching and recruitment of
students.
Subjects Taught
Theory of Structures II, Structural Analysis II and III, Documentation III, Drawing II
Position Head of Department, Dept. of Civil Engineering
Employer Walter Sisulu University of Science and Technology (formerly Transkei
Technikon and Eastern Cape Technikon)
Duration January 1996 to December 1996
January 2000 to December 2003
Responsibilities
• Responsible for the smooth operation of the Civil Engineering Department at Butterworth and East London
Campuses (125km apart)
• Oversees a staff complement of 2 Senior Lecturers, 11 lecturers, 1 Senior Technician, 1 Technician and
1 Secretary and ± 230 National Diploma and 30 B-Tech degree students
• Represent the Civil Engineering Department at Faculty Management Executive, Technikon Management
Committee and Senate meetings
Trevor Haas’ CV Page 2 of 7
• Coordinating the implementation of B-Tech degree programs in Water and Transportation Engineering
starting July 2000
• Responsible for preparation of SERTEC / ECSA documentation for 1996, 2000 and 2003 evaluations
• Responsible for guiding staff and obtaining full accreditation in 1996, 2000 and 2003 by SERTEC / ECSA
• Liaise with industry and the Civil Engineering Advisory Committee to determine the relevance of the
curriculum
• Together with the Director of Roads and Public Works (DRPW) (Eastern Cape), a memorandum of agreement
conceptualized and implemented for a capacity building project to empower the DRPW to regrade and reblade
Rural roads in the O.R. Tambo Region, EC. The project was essentially to provide experiential training
opportunities for 15 students and 6 engineers / technologists in training under the supervision of a professional
engineer. I was responsible for the overall project management of the project.
Position Senior Lecturer, Department of Civil Engineering;
Structure’s Division
Employer Stellenbosch University
Duration February 2008 to date
Responsibilities
• Teaching at undergraduate level, Strength of Materials 224 (2nd year course for Civil and Mechanical
Engineering Students)
• To teach Strength of Materials to 1st year engineering students
• Supervise 4th year student projects
• Act as co supervisor for 4th year student projects
• Taking responsibility for the Structural Engineering Laboratory
• Continue with research work into Electric Overhead Travelling Crane Support Structures
• Recruiting students to conduct research work under my supervision
Subjects Taught
Strength of Materials 254, Strength of Materials 224, Strength of Materials 143
Areas of Research Interest
• FEA Modeling
• Retrofitting of existing structures
• Engineering Education
Post Graduate Students (Master’s)
• 3 Post graduate students from 2011
Publications
• T. N. Haas, (1999), “Finite Element Analysis of Retrofitted Carbon Fiber Reinforced Concrete Beams”,
A thesis submitted as partial fulfillment of the requirements for the Master of Science Degree, Southern
Illinois University at Carbondale, U.S.A.
• T. N. Haas, (2007), “Numerical (FEA) Evaluation of Crane End Buffer Impact Forces”, A dissertation
submitted in fulfillment of the requirements for the Degree, Doctor of Philosophy in Civil Engineering,
Stellenbosch University, South Africa
Trevor Haas’ CV Page 3 of 7
Journal Articles Submitted for Publication – Busy with changes as requested by reviewers
Haas, T. N., Maincon P., Dunaiski P., ”Comparison Of The Experimental And Finite Element Analysis Of
The Crane Impact Force Histories: Part 1”, The South African Journal of Civil Engineering,
Haas, T. N., Maincon P., Dunaiski P., ”Estimation Of The Maximum End Buffer Impact Force For A Given
Level Of Reliability: Part 2”, The South African Journal of Civil Engineering,
Conference Proceedings
• Craddock, J.N., and Haas, Trevor, “The Effects of a Fiber-Composite Wrap on the Properties of
Reinforced Concrete Beam,” International Conference on Composites Engineering, Denver, Colorado,
U.S.A., July 2-8, 2000.
• Haas, T. N., Maincon P., Dunaiski P., “Evaluation of End Buffer Impact Forces”, International
Association of Bridge and Structural Engineering (IABSE) Symposium, Bangkok, Thailand, 9 – 11
September 2009.
• Haas, T. N., Maincon P., Dunaiski P., “Finite Element Analysis Modeling of Full Scale 5-ton Electric
Overhead Travelling Crane and the Crane Supporting Structure”, The 4th International Conference on
Structural Engineering, Mechanics and Computation, University of Cape Town, South Africa, 6 – 8
September 2010.
Post Graduate Students Supervised
• Master’s Degree
Ms I Idowu: Topic: Effect of Box Girder Stiffness on the End Buffer Impact Forces
Thesis Reviewed
• 2 Master degree thesis reviewed
Consulting Work
• Conducting structural engineering design work on a part-time basis (1-day per week)
Design work includes
• Design of structural elements (Steel, concrete and timber)
• Modeling of structural work.
Selected Projects:
Project: Helderberg Village Houses – Helderberg – Cape Town
Description: The analysis, design and detailing of R.C. beams and slabs founded on piles.
Trevor Haas’ CV Page 4 of 7
Project: Building in Cape Town
Description: The analysis and design of a steel canopy truss around perimeter of the building. I was also
responsible for the connection details and review of working drawings.
Project: 15 on Orange Hotel – Cape Town
Description: The analysis and design of a 6 storey steel staircase supported by 23m two hollow steel circular
sections. A modal analysis was conducted and necessary amendments made to correct the natural
frequency of the structure.
Project: 18 Tower Dock – Waterfront – Cape Town
Description: The analysis and design of a single flight of a steel staircase with two landings. This included the
connection detail design and review of working drawings.
Project: Sky Bridge Link Across Adderly Road – Cape Town
Description: Initial analysis and design of the sky bridge link across Adderly road.
Project: Shared Services Centre – Portal Frame Analysis – Vangate Mall
The analysis and design of steel portal frames (pergolas), including connection detail design at
Vangate Mall.
Project: Steel support for backwash tank - Virgin Active
Description: The analysis and design of a steel support for a 5 500L backwash tank supported to the ceiling of
the basement. Also responsible for connection details design and checking of working drawings.
Project: Marina Beach Club House - Seychelles
Description: Preliminary design for a timber roof truss supported on limited columns for Marina Beach Club
House.
Project: Slab Design for Parking Garage - Seychelles
Description: The analysis and design of a flat slab using strip method.
Engineering Council Of South Africa (ECSA)
• ECSA assessor for the Civil Engineering program at University of Technology (Numerous accreditation
completed as assessor and team leader)
• Deputy Visit Leader for the ECSA accreditation visit to Cape Peninsula University of Technology –
September / October 2008
Awards
Obtained an ATLAS scholarship through USAID to pursue a Master’s Degree in Civil Engineering at Southern
Illinois University at Carbondale, USA from January 1997 to May 1999. During this period I undertook a bridging
course for entry into the Master’s degree program and also completed 3 subjects at Doctorate level.
Computer Literacy
MS Office – Excel, Word, PowerPoint
Trevor Haas’ CV Page 5 of 7
ABAQUS – Finite Element Analysis Software (used during PhD)
Prokon – Structural Engineering software
FORTRAN 90
AutoCAD R14
Courses completed since National Higher Diploma
Subjects completed towards M.S. Grade Obtained
1. Foundation Engineering A
2. Advanced Foundation Engineering A
3. Matrix Methods of Structural Analysis A
4. Structural Dynamics A
5. Seismic Design C
6. Finite Element Analysis A
7. Statically Indeterminate Structures A
8. Special Project A
After successfully completed the above courses, I successfully completed the additional courses listed
below towards my Doctorate degree
1. Non Linear Analysis A
2. Soil Dynamics A
3. Theory of Composites and Laminates B
PhD Abstract
The current codes of practice for the design of structures which were studied during this investigation do not
explicitly account for the flexibilities and interactions of the Electric Overhead Travelling Crane (EOHTC) and the
crane support structure. This leads to analysing the EOHTC and the gantry structure as a decoupled system for
ease of computation. Thus, the interaction of the various components of the EOHTC and gantry structure is
ignored, which may result in an incorrect assessment of the forces computed in the gantry structure’s members.
This led to a study to determine the effects of a EOHTC on the gantry structure. The research was conducted
through a series of limited experimental tests and extensive advanced Finite Element Analysis (FEA) simulations.
This resulted in developing a computationally efficient FEA model of the full scale experimental EOHTC testing
facility in the structural engineering laboratory at Stellenbosch University. The FEA model was developed to
conduct simulations for the various load models, namely, vertical wheel load, horizontal longitudinal load and the
horizontal lateral load models, as prescribed by the various codes. The research was then focused at determining
the maximum end buffer impact force responses when the crane runs into the end stops. The other load models
were investigated by another researcher using the same FEA model.
The results from the experimental tests were used to calibrate the FEA simulations. This proved exceptionally
challenging due to the various structural response phenomena which occur during the impact of the crane against
Trevor Haas’ CV Page 6 of 7
the end stops. A good correlation between the experimental values and the values predicted by the FEA
simulations was achieved for the first impact.
Modal analysis and modal superposition methods of analysis were used to determine the effect of the modes of
vibration on the structural response to the end buffer impact.
A FEA sensitivity analysis was conducted on a set of identified parameters which have a significant effect on the
structural response to the end buffer impact.
The maximum end buffer impact force was determined for a chosen level of reliability based on the responses
from the sensitivity analysis using the Lagrange Multiplier method.
These maximum end buffer impact forces are then compared with the forces prescribed by the codes. SABS 0160
slightly underestimates, while SANS 10160 severely overestimates the end buffer impact force obtained from the
constraint optimization technique for a target level of reliability of β =3.
Trevor Haas’ CV Page 7 of 7


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