Big On Quality, Big On advice, Big On Service!
Call us today
1300 244 364


Biggenden Engineering was established by Glen and Julie Chapman in 1995. The business outgrew the original premises in George Street, Biggenden and the company relocated to larger premises at the butter factory building in 2006. The company has grown steadily and expanded to provide a unique combination of products and services that it offers to the region.

The company plans further expansion in 2013 at the current location with the construction of a new workshop to cater specifically for steel processing services in one section and Heavy Vehicle Services. The addition of the new building will give the company room to fully cater to the needs of their clients with the provision of these specialist services.

What We Do

We have fabrication and machining capabilities that allow us to manufacture a range of products including stock crates, truck bodies, tipper bodies, portable livestock yards and feeding equipment. We can also custom fabricate mild steel, aluminium and stainless steel products and structures to meet client specifications and drawings.

Our extensive range of services allows us to offer our clients the complete package. You can rely on our knowledge and experience to provide the highest quality work and outstanding customer service. We have strong company values and place a great deal of importance on honesty, ethics, safety and quality and these values are reflected in our processes and our people.

In addition to our manufacturing and servicing capability, we carry a large range of steel sections and plate which we can process in-house. Our spare parts department offer a range of engineering supplies including cutting tools, safety gear, welding supplies and gas. We also have a range of bearings, transmission components, seals, hydraulics, windmill parts and fasteners as well as replacement parts for tractor, trucks and trailer parts to meet almost any needs.

What It Means For You

The range of products and services we offer means for customers in the region, there is no need to look outside the local area for fabrication, welding, general engineering services and engineering supplies.

When you contact us, you can talk directly to an expert who will provide you with accurate technical advice and work with you throughout the production process to ensure that your job is delivered on time and to your satisfaction.

Our Key People

JULIE CHAPMAN – Business Development Manager

Graduating from the University of Queensland with a Bachelor of Arts with majors in business, Julie has been with the company since it was established in 1995 and oversees the Financial and Business Management operations. She has over 30years experience and knowledge in business and management and also holds diplomas in business, business administration and management. She plays an important role in maintaining the smooth and efficient operations of the business and is responsible for all aspects of the company’s operations.

In addition to her role in the company, Julie is also a Justice of the Peace having completed 29years service to her community. She has also spent 3years on the Business Advisory Group to the North Burnett Regional Council from 2008 to 2010. In 2013 Julie completed a Graduate Certificate in Small Business Management at Charles Sturt University and in 2015 a Graduate Diploma of Commerce to further develop her management skills.


Since establishing the company in 1995, Glen has played a pivotal role in the company’s operations. He is a qualified Fitter, Turner and Machinist by trade and holds a Diploma of Mechanical Engineering. With over 30years industry experience, Glen is well positioned to ensure that the BigEng name remains synonymous with quality and adaptability and that both clients and staff continue to thrive and grow. Glen plays an important role in overseeing and managing the company’s production process and is responsible for the day to day running of the business and is always available to share his extensive knowledge to answer your technical queries.

Following in the family footsteps, Glen and Julie, his partner in business and wife of 29years have two adult sons with a Bachelor of Engineering from the University of Queensland. Benjamin the oldest is a Mechanical Engineer and the youngest son Darcy is a Civil Engineer.

Glen continually gives of his time and knowledge to the local community and the company sponsors Engineering Trade Awards through the local high school. In addition to this he has also taken on a mentoring role for the Biggenden State School for the establishment and running of the Trade Training and Hospitality Centre opened in 2013.

The BigEng Commitment


“Our company is committed to providing and maintaining a safe working environment which complies with Work Health and Safety Legislation. Although not formally accredited all work is performed to AS4801 standards. We will provide as far as is reasonable practicable, the necessary leadership and resources required to maintain health and safety.”


“BigEng is totally committed to understanding and meeting the quality needs and expectations of all our clients. Our company has a proud reputation for delivering quality products and services. We have established a comprehensive quality assurance system that allows our company to meet all of the requirements of the ISO 9001:2008 quality assurance standard, although we are not formally accredited. The entire BigEng team will adhere to the spirit and intent of our quality policy, as well as the directives of this quality assurance manual and its supporting quality system documentation. We will continue to aggressively strive to ensure that customer satisfaction is achieved at all times, and in all things.”


“Our company is committed to ensuring the future of our planet through environmental sustainability measures and is continually improving its current practices to reduce energy, greenhouse gas emissions, water usage, waste and operating costs. We recognise that concern for the environment is fundamental to the way in which we conduct business and are committed to promoting awareness and responsibility amongst our employees and our company.”


“Developing our capability, delivering value to our clients on a national basis and securing long-term profitable growth is founded on releasing the potential of our employees. We actively support the development of our employees in a number of ways including formalised employee development programs and in-house training. As a national company we embrace diversity and respect for different cultures and local requirements.”


BigEng recognises the obligations it has toward its employees, clients, suppliers, competitors and the community as a whole. We believe our reputation, together with the trust and confidence of those with whom we deal, to be one of the most valuable assets. In order to keep this reputation and trust, we demand and maintain the highest ethical standards in carrying out our business activities.


BigEng recognises the significance of local communities and through our Community Support Policy we strive to be a responsible partner in the communities in which we operate. We strive to actively support the particular needs of our community by contributing to local charities and community initiatives. Support takes the form of employee time and skills, gifts in kind and cash donations.

Prestige Projects

Imhoff Tank for North Burnett Regional Council

Imhoff tanks are named after the German engineer who first designed them, Karl Imhoff. They are used in sewage treatment works. They consist of two chambers or effectively a tank within a tank. The sewage passes through the upper chamber allowing solids to settle out into the lower chamber where anaerobic digestion occurs. The tank is designed such that biogases generated through the digestion process are trapped within the lower chamber and can be vented off in a controlled manner.

When the time came to replace the existing aluminium tank at the North Burnett Council’s treatment plant, BigEng completed the design, fabrication and installation of a new one.

A major challenge with the project was that there were no drawings available of the existing tank, so the design could not be completed until the old one was pulled out and cleaned. It was only then that it became evident that, because of the shape of the bottom, the tank could not be supported from underneath so it was necessary to devise a means of supporting it by hanging it from the surrounding walkway.

“We were very happy with the way that BigEng handled the whole project” said Mr Graham Cole, who manages the treatment plant. “They not only had the technical expertise and fabrication capability required to do the job, but were also very professional and easy to deal with.”



Paradise Dam Project

The 37m high, 300 000 ML Burnett Dam project in Queensland was officially named Paradise Dam when it was opened in December 2005. Paradise Dam became Australia’s largest RCC (rolled compacted concrete) dam, winning the 2006 Queensland CASE Earth awards in the categories of environmental and construction excellence. The dam was designed to provide irrigation and environmental water for the Wide-Bay Burnett region.

The dam was built on a dry river bed after two diversion culverts carrying 420m3/s of diversion water and a temporary fish way were installed. The dam wall was constructed using a RCC-mix of cement and aggregate. The RCC was spread in 310mm layers and compacted with a combination of 18t vibratory drum rollers and plate compactors. Reinforced RCC was applied to the primary and secondary spillway dissapators aprons, with the last RCC apron layer containing high cement content (150 kg/m3).

The upstream face of Paradise Dam was constructed from precast panels welded together and a Capri PVC membrane embedded in the panels’ downstream side. Steel steps and RCC formed the dam’s downstream face. The inlet tower is comprised of fine screens and a shutter system while the outlet structure contains a gate house control room, valve room and valve pits, the downstream weir and the fish way control pipework.

Noteworthy and unique features of Paradise Dam include:

  • First high dam in Australia with dedicated upstream and downstream fish ways for all migratory fish species and fish sizes
  • First lean mix RCC dam in Australia with an upstream PVC membrane providing the waterproof barrier
  • Largest volume RCC dam in Australia

BigEng was the major contractor to Burnett Dam Alliance for supply of steel work, onsite installation as well as onsite maintenance of machinery and equipment for the construction of Paradise Dam from 2003 to 2006;

Other Projects include

  • Major contractors to Burnett Dam Alliance for supply of steel work, onsite installation as well as onsite maintenance of machinery and equipment for the construction of the Paradise Dam from 2003 to 2006;
  • Stainless Steel Culvit Security Grills for Head Walls at Brisbane Airport - client BMD Constructions 2012Principal contractor for manufacture and installation of the Biggenden Sewerage Treatment Plant upgrades in 2013;
  • Major contractor for the Biggenden Meat Works Premises upgrades; First upgrades during 1997; a second major upgrade involving a whole new complex during 2002;
  • Engineering Drawings for Steel Columns for Jilalan Bridge Project – client MacMahons Constructions 2008MacMahon Contractor’s;
  • BMD Constructions;
  • Ergon Energy – preferred supplier throughout Queensland for Fabricated Brackets and steel structures supplying Cairns, Townsville, Rockhampton, Maryborough and Toowoomba Depots from 1997 to present.
  • Manufacture and Installation of the monorail system – client Biggenden Meat Works 2010.North Burnett Regional Council;
  • Road Tek;
  • SG Fleet Maintenance for Ergon Energy;
  • Commercial Minerals – primary supplier for general engineering services and onsite maintenance from 1995 – 2001;
  • Parkside Group;