The deflection of beams may be decreased bya)Increasing the depthb)Increasing the sanc)Decreasing the depth of beamd)None of theseCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Increasing the depth of the beam:
Increasing the depth of the beam is an effective way to decrease the deflection of beams. Here's why:

Increased Moment of Inertia:
By increasing the depth of the beam, the moment of inertia of the beam section increases. Moment of inertia is a measure of an object's resistance to changes in its rotational motion. A higher moment of inertia means that the beam is stiffer and less prone to bending, resulting in reduced deflection.

Improved Section Modulus:
The section modulus of a beam is a measure of its ability to withstand bending stresses. Increasing the depth of the beam increases the section modulus, which in turn reduces the bending stresses experienced by the beam and decreases deflection.

Greater Strength:
A deeper beam has a greater cross-sectional area, which increases its strength. This increased strength helps the beam resist bending and reduces deflection under load.

In conclusion, increasing the depth of the beam is an effective solution to decrease beam deflection. It improves the beam's stiffness, section modulus, and strength, all of which contribute to reducing deflection and ensuring the structural integrity of the beam.

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