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 | Oct 26, 2018
Nonresidential fixed investment returns to earth in Q3
Despite the broader economic growth, fixed investment inched 0.3% lower in the third quarter.
Market Data | Oct 24, 2018
Architecture firm billings slow but remain positive in September
Billings growth slows but is stable across sectors.
Market Data | Oct 19, 2018
New York’s five-year construction spending boom could be slowing over the next two years
Nonresidential building could still add more than 90 million sf through 2020.
Market Data | Oct 8, 2018
Global construction set to rise to US$12.9 trillion by 2022, driven by Asia Pacific, Africa and the Middle East
The pace of global construction growth is set to improve slightly to 3.7% between 2019 and 2020.
Market Data | Sep 25, 2018
Contractors remain upbeat in Q2, according to ABC’s latest Construction Confidence Index
More than three in four construction firms expect that sales will continue to rise over the next six months, while three in five expect higher profit margins.
Market Data | Sep 24, 2018
Hotel construction pipeline reaches record highs
There are 5,988 projects/1,133,017 rooms currently under construction worldwide.
Market Data | Sep 21, 2018
JLL fit out report portrays a hot but tenant-favorable office market
This year’s analysis draws from 2,800 projects.
Market Data | Sep 21, 2018
Mid-year forecast: No end in sight for growth cycle
The AIA Consensus Construction Forecast is projecting 4.7% growth in nonresidential construction spending in 2018.
Market Data | Sep 19, 2018
August architecture firm billings rebound as building investment spurt continues
Southern region, multifamily residential sector lead growth.
Market Data | Sep 18, 2018
Altus Group report reveals shifts in trade policy, technology, and financing are disrupting global real estate development industry
International trade uncertainty, widespread construction skills shortage creating perfect storm for escalating project costs; property development leaders split on potential impact of emerging technologies.
