André Vézina, ITA, La Pocatière Campus Planning a Shelterbelt April 2006

André Vézina, ITA, La Pocatière Campus Site selection  Odour reduction  Snow accumulation  Building visibility  Other factors:  Heating costs  Type of ventilation

André Vézina, ITA, La Pocatière Campus W/H = 8 26% reduction W/H = % reduction Odour reduction varies with W/H ratio (Liu et al., 1996) Odour source

André Vézina, ITA, La Pocatière Campus Snow accumulation attributable to shelterbelt  A 30-metre distance is recommended (from prevailing winds) between the shelterbelt and the installations to be protected in order to allow snow to accumulate.

André Vézina, ITA, La Pocatière Campus Remove from sight… complaints will drop  Origin of complaints should be taken into account.

André Vézina, ITA, La Pocatière Campus Reducing heating costs  Building should be located at 2-4 H of the hedge to be in the optimal wind speed reduction area.

André Vézina, ITA, La Pocatière Campus Type of ventilation  With natural ventilation: allow sufficient space (8 H) between the hedge and the building to allow air streams to flow back down.

André Vézina, ITA, La Pocatière Campus Height  Hedge height target is 15 m, especially in cases where heating costs reduction is an added protection objective.  Shrubs and small trees can also do well when the key objective is to remove buildings from sight.

André Vézina, ITA, La Pocatière Campus 25 N Prevailing winds 25

André Vézina, ITA, La Pocatière Campus Prevailing winds Property lines