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Structural Engineering & Construction Situation 67 (PH)
PAST BOARD EXAM PROBLEMS
Structural Engineering & Construction
Situation 67
The flooring of a warehouse is made up of DT Joists as shown. The joists are simply supported on a span of 7.5m.
Give: A = 2x105 mm2
I = 1.88 x 109 mm4
The initial prestressed force is 745 kN located at 192 mm below the neutral axis. Loads: DL = 2.3 kPa, DL = 6.0 kPa
1. Determine the tensile stress due to the initial prestress force. (33.18)
2. Determine the maximum compressive stress at midspan of the beam due to the given loads and the prestress force based on the following conditions:
Loss of prestress = 18%
Beam unit weight is 24 kN/m3 (14.75)
3. Determine the additional superimposed load that the DT can carry such that the resulting tensile stress at the bottom fiber is zero. Consider 18% of stress. (14.77)
PRESTRESSED CONCRETE DESIGN
SUBJECT PLAYLIST: https://tinyurl.com/ybaf4xct
Playlist Per Chapter/Per Topic:
Chapter 1 Introduction to Prestressed Concrete
Principles of Prestressed Concrete: https://tinyurl.com/3x6mse7w
Elastic Flexural Stress: https://tinyurl.com/3s4jzbrh
Credits:
1. Intro Template: https://youtu.be/D_UOajdPf-c
2. Music:
2.1 Driven to Success by Scott Holmes, Source: http://www.freemusicarchive.org
2.2 Instrumental (Guitar) by Carl Ernest Tayag, check his channel: https://www.youtube.com/channel/UC5jevz5Hgkv86NmLyGubzWA
3. Reference for the problem:
Comment your suggestions or questions here.
Thanks for watching!
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God bless! :)
#SEC #CEBox #CivilEngineering #PatternLoadings #Engineering #ceboardexam #boardexam #prc #review #CivilEngineeringLicensureExam #structuralengineering #stem #engineeringlife #stemlife
...
https://www.youtube.com/watch?v=NN2cRRhzrRA
Structural Engineering & Construction
Situation 67
The flooring of a warehouse is made up of DT Joists as shown. The joists are simply supported on a span of 7.5m.
Give: A = 2x105 mm2
I = 1.88 x 109 mm4
The initial prestressed force is 745 kN located at 192 mm below the neutral axis. Loads: DL = 2.3 kPa, DL = 6.0 kPa
1. Determine the tensile stress due to the initial prestress force. (33.18)
2. Determine the maximum compressive stress at midspan of the beam due to the given loads and the prestress force based on the following conditions:
Loss of prestress = 18%
Beam unit weight is 24 kN/m3 (14.75)
3. Determine the additional superimposed load that the DT can carry such that the resulting tensile stress at the bottom fiber is zero. Consider 18% of stress. (14.77)
PRESTRESSED CONCRETE DESIGN
SUBJECT PLAYLIST: https://tinyurl.com/ybaf4xct
Playlist Per Chapter/Per Topic:
Chapter 1 Introduction to Prestressed Concrete
Principles of Prestressed Concrete: https://tinyurl.com/3x6mse7w
Elastic Flexural Stress: https://tinyurl.com/3s4jzbrh
Credits:
1. Intro Template: https://youtu.be/D_UOajdPf-c
2. Music:
2.1 Driven to Success by Scott Holmes, Source: http://www.freemusicarchive.org
2.2 Instrumental (Guitar) by Carl Ernest Tayag, check his channel: https://www.youtube.com/channel/UC5jevz5Hgkv86NmLyGubzWA
3. Reference for the problem:
Comment your suggestions or questions here.
Thanks for watching!
Subscribe now for more videos and click the bell icon for notifications.
God bless! :)
#SEC #CEBox #CivilEngineering #PatternLoadings #Engineering #ceboardexam #boardexam #prc #review #CivilEngineeringLicensureExam #structuralengineering #stem #engineeringlife #stemlife
...
https://www.youtube.com/watch?v=NN2cRRhzrRA
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