FavoritePlease sign in to add this to your favorites. Topic: Safe Work Practices Subtopic: Basements and Crawl Spaces Desired Outcome: Contaminants prevented from entering house during work process Single-Family HomesPrintCopy to ExcelEmail TitleSpecification(s)Objective(s) 2.0111.4c Pressure A negative pressure will be maintained in the crawl space with reference to the house while work is being performed in the crawl space Prevent contaminants from entering house Previous Detail Next Detail Back to 2.0111 Basements and Crawl Spaces Back to Top