Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 6 (Q.No. 1)
1.
A prestressed concrete rectangular beam of size 300 mm x 900 mm is prestressed with an initial prestressing force of 700 kN at an eccentricity of 350 mm at midspan. Stress at top of the beam due to prestress alone, in N/mm2 is
Discussion:
14 comments Page 2 of 2.
Abhay singh said:
5 years ago
3.46 tension.
Angelica A. said:
5 years ago
8.64 (Compression).
Top Stress= - (P/A) - (Pey/I).
=-(700, 000 N /(300mm * 900mm)) - ((700,000 N * 350mm * 450mm * 12)/(300mm * 900 mm ^3)).
Top Stress= - (P/A) - (Pey/I).
=-(700, 000 N /(300mm * 900mm)) - ((700,000 N * 350mm * 450mm * 12)/(300mm * 900 mm ^3)).
Prabhakar Maurya said:
4 years ago
Top stress = -3.5.
Bottom stress = +8.6.
Bottom stress = +8.6.
Balram said:
3 years ago
It should be 3.46.
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