January 2016 Monthly Meeting

Meeting Title
Below Grade Water Management and Waterproofing Design

Aceh Community Room
Mercy Corps, 45 SW Ankeny St
Portland, OR 97204

David Fookes, Morrison Hershfield

Below grade waterproofing is becoming increasingly important as occupants, owners and warranty providers are less tolerant to water ingress into below grade structures and local jurisdictions are increasingly limiting rain and storm water discharge. There are various water management methodologies and waterproofing systems available to provide protection against water ingress of foundations. This presentation provides insight into various waterproofing strategies and systems for below grade foundations. Factors that contribute to the performance of a dry below grade foundation will discussed including soil retention, ground and surface water flow rates, hydrostatic pressure, dewatering and drainage, foundation forming, concrete mix design, steel reinforcement, waterproofing membrane and accessories, weather during installation, contractor experience, design, details, field review and cost.

David brings over 25 years’ experience in engineering and construction. His career as a Professional Engineer has provided him with extensive knowledge in design, forensic analysis and construction of buildings with a focus in material and building science. David is the Technical Director of the Building Science division within MH working out of the Vancouver office. David has a depth of practical experience in product evaluation and specification combined with academic training in material science and engineering. His engineering experience includes various glazing, cladding and roofing systems with a specific expertise in above and below grade moisture, air and thermal barriers and systems. He has been involved in all levels of the material and building science occupation having previously worked in product research, development, construction and manufacturing.