Strength of Post-Tensioning

Within the reinforced concrete construction industry, it’s widely known that a 1/2-inch-diameter post-tensioning tendon can hold around 27 kips (120 kN) when in tension. 1 kip equals 1,000 pounds-force and 1 pound-force equals the gravitational force exerted on a mass of 1 pound on Earth’s surface.

In the engineering world, we deal with holding dead and service loads as opposed to “things.” Here is list of real-life “things” that 1 PT tendon can hold:

12,258,000 U.S Dollar bills

1

109,367 Apple iPhone 5s smartphones

2

67,500 Rubik Cubes

3

43,200 bags of Lays Classic potato chips (10 oz.)

4

4,376 Sony Playstation 4 sets

5

3,375 Harry Potter paperback box sets (shipped weight of books 1-7)

6

200 Fish Tanks (including a few fish and flora inside 10 gallon of water)

7

89 GE Side-by-Side 21.9 cu.ft Refrigerators
8

9 Toyota Corolla (2014 curb weight)

9

5 Tesla Model S (2014 curb weight)

10

1 Dallas Cowboys endzone Jumbotron (a sideline jumbrotron needs 7 PT tendons)
11

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SOURCES

  • ACI/PTI Code: Ultimate strength of 1/2″ 270 ksi tendon is 41.3 kips.
  • www.moneyfactory.gov/faqlibrary.html
  • http://www.apple.com/iphone-5s/specs/
  • www.businessinsider.com
  • www.amazon.com
  • www.petsmart.com
  • www.homedepot.com
  • www.toyota.com
  • www.teslamotors.com
  • http://www.engadget.com/2008/04/16/full-specs-on-the-dallas-cowboys-worlds-largest-1080p-led-scor/

Article reprinted from Neel Khosa’s LinkedIN Blog.

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