The latest Passive House Institute U.S. (PHIUS) standard, expected to be released early next year, contains a prescriptive path option that could reduce the cost of certification.Ā
Passive House 2021+ is expected to include the ability to achieve certification without a requirement for a Passive House consultant and the attendant modeling that goes with it. The Prescriptive Design Review checklist is four pages plus footnotes. It is similar to ENERGY STAR rater checklists.
The new Prescriptive Path provides an online calculator that requires a few entries to determine minimum R-values and maximum window U factor.Ā These provisions include a window U factor maximum of .25, R-31 for cantilevered floors, R-61 for roof or ceiling insulation, and R-20 for slabs and floors over unconditioned space. Alternatively, one can provide a calculation that meets the same overall UA as the prescriptive requirements. This allows for tradeoffs.
Related Stories
Market Data | Nov 3, 2017
New construction starts in 2018 to increase 3% to $765 billion: Dodge report
Dodge Outlook Report predicts deceleration but still growth, reflecting a mixed pattern by project type.
Market Data | Nov 2, 2017
Construction spending up in September; Down on a YOY basis
Nonresidential construction spending is down 2.9% on a year-over-year basis.
Market Data | Oct 19, 2017
Architecture Billings Index backslides slightly
Business conditions easing in the West.
Industry Research | Oct 3, 2017
Nonresidential construction spending stabilizes in August
Spending on nonresidential construction services is still down on a YOY basis.
Market Data | Sep 21, 2017
Architecture Billings Index continues growth streak
Design services remain in high demand across all regions and in all major sectors.
Market Data | Sep 21, 2017
How brand research delivers competitive advantage
Brand research is a process that firms can use to measure their reputation and visibility in the marketplace.
Contractors | Sep 19, 2017
Commercial Construction Index finds high optimism in U.S. commercial construction industry
Hurricane recovery efforts expected to heighten concerns about labor scarcities in the south, where two-thirds of contractors already face worker shortages.
Multifamily Housing | Sep 15, 2017
Hurricane Harvey damaged fewer apartments in greater Houston than estimated
As of Sept. 14, 166 properties reported damage to 8,956 units, about 1.4% of the total supply of apartments, according to ApartmentData.com.
Hotel Facilities | Sep 6, 2017
Marriott has the largest construction pipeline of any franchise company in the U.S.
Marriott has the most rooms currently under construction with 482 Projects/67,434 Rooms.
Market Data | Sep 5, 2017
Nonresidential construction declines again, public and private sector down in July
Weakness in spending was widespread.