About Us

Stonecrest Engineering provides professional engineering services which originally catered specifically to the agricultural industry but has now expanded into the bioenergy, commercial and residential sectors. Our staff works with business owners and/or their builders to develop practical, environmentally sound site plans and on-farm structures that address current and future regulations.

Stonecrest Engineering is dedicated to engineering excellence for the agricultural industry. Our designs can be found all across Canada and the United States, and have now expanded into Eastern Europe.

Our engineering experience spans the entire agricultural industry, including: dairy, swine, poultry, beef, duck, goat, horse and sheep facilities as well as accessory buildings. Stonecrest Engineering works closely with our clients, to ensure that our drawings are structurally sound, and that layout accommodates animal traffic flow and comfort. We pride ourselves so that our clients experience successful projects that work for them today and in the future.


Wayne Blenkhorn, P.Eng.

Wayne is a graduate of McGill University in Agricultural Engineering and later returned there to gain a Master’s in Agricultural Engineering and complete his studies in Mechanical Engineering. Following graduation, Wayne joined Ontario's OMAFRA organization at Kemptville Agricultural College where he taught Engineering courses and assisted in college research and design projects.

Wayne joined a worldwide ventilation company—Nordisk Ventilator, with head quarters in Denmark, during the 70’s. Later, he acquired their Canadian subsidiary which specialized in ventilation systems dedicated to the agricultural market. For the next decade Wayne switched the product line from largely powered systems to energy saving natural ventilation systems. Being an owner and operator of his own family hog farm during this period permitted contribution of some practical experience and observations to the design process.

Today, Wayne is President of Faromor Ltd, a Stonecrest Engineering sister company, and continues to support the development and marketing of their ventilation products throughout North America, Eastern & Western Europe, and Asia

Steve Miller, P.Eng., President 

Steve joined Stonecrest Engineering in 2000 and is a graduate of Civil Engineering at the University of Waterloo. His previous experience included technical writing for an engineering software firm and performing computer modeling simulations for an energy conservation consulting company.

Steve has proven the ability to lead Stonecrest Engineering during the past years with steady and continued growth of business supported by a loyal following of farm owners and their progressive Agricultural Builders. Steve provides the professional engineering and technical guidance needed to support our strong contingent of capable design persons. His responsibility, acting as Chief Engineer, also includes overseeing the daily operations of Stonecrest and keeping his staff informed of continued changing regulations that impact the farming industry.

Rob Pol, Senior Dairy Designer

Rob is a graduate of Sheridan College in Brampton, Ontario and is our most experienced dairy design specialist. Rob joined Stonecrest in 1999 and immediately applied his extensive knowledge of dairy operations and construction to our projects. Raised on a local dairy farm and having family members heavily involved in construction has given Rob the background to design practical dairy facilities to suit our customers. In addition to his lead role in dairy design Rob is available to other staff members to assist them in making construction or dairy planning decisions.

Tammy Kollman, Project Designer

Tammy is a graduate of Fanshawe College in London, Ontario. Tammy has quickly become our in-house expert on poultry and swine facilities as well as accessory structures. Her previous experience as a computer support consultant for a building design software firm has proven valuable in supporting and trouble shooting our IT within the company.

Bram Van Den Heuvel, Project Designer/Site Inspections

Bram joined Stonecrest Engineering in 2005 after graduating from Conestoga College in Kitchener, Ontario. Bram was raised on a family poultry operation.

Bram is our in-house Ontario Building Code expert. Bram is actively involved in designing various agricultural buildings when not out on a construction site. Additionally, Bram is our in house expert for rendering and animation and this continues to play a growing role in our ability to assist clients to present projects to other business partners such as banks or permitting authorities.

Kate Mc Gregor , Project Designer

Kate is a graduate of Conestoga College in Kitchener and has become one of our leading Dairy Project Designers for the company. Kate was raised on a dairy farm and this is immediately apparent from her confidence and ability in creating a dairy project design. She is a self start individual who has demonstrated her ability to briefly dialogue with a client and turn their comments into an accurate and detailed facility plan.

Rhea Rajack, M.Eng., EIT, Structural Specialist

Rhea joins us after completing a Master's degree in structural engineering from the University of Western Ontario. Her focus at Stonecrest is on computer modeling and engineering of steel framed structures.

Pat Ducharme, B.A.Sc., Project Manager

Pat graduated from the University of Waterloo with a degree in civil engineering and has over fifteen years experience in engineering design and drafting. Pat has kept busy as Project Manager for one of our large clients and doing a number of our site inspections. So, if you see him on your job site, be sure to say hello.

Liana Iveson Marr, Office Manager

Liana, a graduate of Sheridan College in Oakville, has over 25+ years of administrative management and marketing experience in the construction and engineering industries. Liana is responsible for the overall flow of all our documentation and communications within the company, is Assistant to the President, coordinates all our projects and oversees our office operations, marketing, social media and web design for the company.

Josh Wagler, Project Designer

Josh is the newest addition to our Stonecrest team. Josh is a recent graduate from Conestoga College with background knowledge in construction and design methods bringing experience in CAD and Building Information Modelling (BIM).  Josh grew up on a dairy farm and recently a chicken (broiler) operation locally. He will be working with a variety of projects as well as joining Bram and Pat with completing site inspections in the area.

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