One-plus-five

One-plus-five, also known as five-over-one, or a podium building[1], is a type of multi-family residential building commonly found in urban areas of North America.[2][3] The mid-rise buildings are normally constructed with four or five wood frame stories above a concrete podium (usually housing retail or resident amenity space). The one-plus-five style of buildings exploded in popularity in the 2010s, following a 2009 revision to the International Building Code which allowed up to five stories of wood-framed construction.[4]

For the smartphone, see OnePlus 5.
One-plus-five style apartment buildings in Austin, Texas

Description
Apartment buildings in Long Branch, New Jersey featuring three wood-frame stories over a concrete podium

The first recorded example of one-plus-five construction is an affordable housing apartment building in Los Angeles built in 1996.[5] The wood-framed one-plus-five style is popular due to their high density and relatively lower construction costs compared to steel and concrete.[6] One-plus-five buildings often feature secure-access interior hallways with residential units on both sides, which favors a U, E, C, or right-angle building shape.[5] The exteriors of one-plus-fives often contain flat windows, rainscreen cladding, and Hardie board cement fiber panels.[2]

These buildings are also sometimes called a Wrap or Texas Doughnut, which describes a multifamily building that's wrapped around a parking garage in the center.[7][8] This style is common in areas with higher minimum parking requirements.[5]

Criticism

One-plus-five buildings are often criticized for their high fire risk[9] as well as their blandness.[2][5][10] Some cities and jurisdictions have considered additional regulations for multi-story wood-framed structures. The city of Waltham, Massachusetts called for legislation to prevent the construction of multi-story wood-framed buildings, which was introduced following a fire at an under-construction wood-framed condominium in the city[11] The borough of Edgewater, New Jersey introduced a resolution calling on the state of New Jersey to enact stricter fire safety regulations for wood-framed buildings, following a large fire that occurred in the wood-framed Avalon at Edgewater apartments in 2015.[12]

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See also

References
  1. WoodWorks Wood Products Council. "What is the code compliance path that allows podium-style stacked buildings? Are there limitations on the number of podium stories?". Retrieved August 12, 2019.
  2. Sissom, Patrick (December 4, 2018). "Why do all new apartment buildings look the same?". Curbed. Retrieved February 23, 2019.
  3. Fesler, Stephen (2018-05-23). "City Council Allows Taller Wood Buildings, Reforms Street Vacation Process and Advances Waterfront LID". The Urbanist. Retrieved 2019-05-04.
  4. "Multi-Story Wood Construction" (PDF). Engineering News-Record. March 26, 2012. Retrieved February 23, 2019.
  5. Fox, Justin (February 13, 2019). "Why America's New Apartment Buildings All Look the Same". Bloomberg Businessweek. Retrieved February 23, 2019.
  6. Azoff, Rachel A. (July 1, 2009). "Multifamily Developers Turn to Wood-Frame Construction to Cut Costs". Multifamily Executive. Retrieved February 23, 2019.
  7. Kostelni, Natalia (June 27, 2014). "Developer to break ground on apartment complex in King of Prussia". Philadelphia Business Journal. Retrieved February 23, 2019.
  8. Holstein, Amara. "A Fresh Flavor of the Texas Doughnut". Build A Better Burb. Retrieved February 23, 2019.
  9. Sperance, Cameron (August 3, 2017). "CRE Hypes Safety Of Wood-Frame Construction In Wake Of National Fires". Bisnow Boston. Retrieved February 23, 2019.
  10. Portillo, Ely (December 19, 2015). "Why so many of Charlotte's new apartments look alike (and why some are calling for change)". Charlotte Observer. Retrieved February 23, 2019.
  11. Laidler, John (August 1, 2017). "Waltham fire spurs call for tighter state building code". Boston Globe. Retrieved February 23, 2019.
  12. Curley, Michael W. (March 23, 2018). "Edgewater wants law to prevent fires like Avalon". Bergen Record. Retrieved February 23, 2019.
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