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.
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. 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 | May 20, 2020
6 must reads for the AEC industry today: May 20, 2020
A wave 'inside' a South Korean building and architecture billings continues historic contraction.
Market Data | May 20, 2020
Architecture billings continue historic contraction
AIA’s Architecture Billings Index (ABI) score of 29.5 for April reflects a decrease in design services provided by U.S. architecture firms.
Market Data | May 19, 2020
5 must reads for the AEC industry today: May 19, 2020
Clemson's new mass timber building and empty hotels as an answer for the affordable housing shortage.
Market Data | May 18, 2020
5 must reads for the AEC industry today: May 18, 2020
California's grid can support all-electric buildings and you'll miss your office when it's gone.
Market Data | May 15, 2020
6 must reads for the AEC industry today: May 15, 2020
Nonresidential construction employment sees record loss and Twitter will keep all of its office space.
Market Data | May 15, 2020
Nonresidential construction employment sees record loss in April
The construction unemployment rate was 16.6% in April, up 11.9 percentage points from the same time last year.
Market Data | May 14, 2020
5 must reads for the AEC industry today: May 14, 2020
The good news about rent might not be so good and some hotel developers consider whether to abandon projects.
Market Data | May 13, 2020
House democrats' coronavirus measure provides some relief for contractors, but lacks other steps needed to help construction
Construction official says new highway funding, employee retention credits and pension relief will help, but lack of safe harbor measure, Eextension of unemployment bonus will undermine recovery.
Market Data | May 13, 2020
5 must reads for the AEC industry today: May 13, 2020
How to design resilient libraries in a post-covid world and vacation real-estate markets are 'toast.'
Market Data | May 12, 2020
ABC’s Construction Backlog Indicator falls in April; Contractor Confidence rebounds from historic lows
Nonresidential construction backlog is down 0.4 months compared to the March 2020 ABC survey and 1.7 months from April 2019.
