Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 34)
34.
The deflection of any rectangular beam simply supported, is
Discussion:
45 comments Page 1 of 5.
Taba Tallum said:
2 months ago
Option A, B & C are correct in the case of a rectangular beam.
Deflection = 5wl4 ÷ 384EI for uploading,
= Wl^3÷48EI for point load etc.
Where I = bd^3/12.
Deflection is directly proportional to weight or load & length.
Deflection is inversely proportional to width and the cube of depth.
Deflection = 5wl4 ÷ 384EI for uploading,
= Wl^3÷48EI for point load etc.
Where I = bd^3/12.
Deflection is directly proportional to weight or load & length.
Deflection is inversely proportional to width and the cube of depth.
Arsalan gul said:
2 years ago
I think all of them are correct because in the deflation formula wL3/48EI where I= bh3/12.
Abdullah said:
2 years ago
Both B and C are correct see the moment of inertia formula.
(1)
Rajpal said:
3 years ago
Yes, option E is the right answer.
Mohit said:
4 years ago
D should be the correct answer, width and depth will change about the axis you are considering that is Ixx or Iyy but the length will be the same, so the answer should be option D.
(2)
Shahab Mehsood said:
4 years ago
B and C both are correct as I=bh^3/12.
Hence deflection is inversely proportional to the width and cube of the depth of the beam.
Hence deflection is inversely proportional to the width and cube of the depth of the beam.
(2)
Rahim Sayyed said:
4 years ago
Between B &D, D is Power 3 therefore it's a major factor dominating the deflection compare to B. So, D should be the right one.
Dipunku said:
5 years ago
It should be all of these.
(3)
VIPIN SAINATH said:
5 years ago
Option C &D is correct because Deflection is inversely proportional to Depth & Moment of Inertia. Deflection is directly proportional to Width and length. When we increase the width area Moment of Inertia reduces and Deflection may also be increased and In case of length, longer spans have high deflection ratio.
U.S.lakshmi said:
6 years ago
The deflection of the beam is directly proportional to (wl^3) and inversely proportional to EIso why is the option choose 'c' and actually option e is all the above I think there is some printing mistake done.
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