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John F. Wiesel is the president of Suderman Estimating Systems Inc., and has been estimating and teaching estimating since the early 1980s. With 45 years of experience in the electrical industry – from journeyman, foreman, project manager, estimator, designer, sales to vice president of a major electrical mechanical firm – he is a qualified international construction consultant with a broad knowledge base.
John has since taught the course to over 3000 people over the past 20 years He has updated the courses to todays standards and had them registered by the Canadian Construction Association for Gold Seal Accreditation.
John published a new labour manual in 2012 with the latest updates and revisions completed in October 2021.