Question

if depth of a beam is doubled then changes in its section modulus is​

Answer 1

Answer:

If depth of a beam is doubled then changes in its section modulus will remain same O Will decrease o will be doubled O Will increase by 4 times O What is the moment of inertia acting on a rectangle of width 15 mm and ?depth 40 mm about the base by using theorem of parallel axes mm 320,000 O mm 300,000 O mm 240,000 O mm4 80,000 O When the bending moment is parabolic curve between two points. It indicates that there is No loading between the two points

Answer 2

Answer:

If depth of a beam is doubled then section modulus will become 4 times.

Explanation:

• Beam: Beam is an element which is used to support any structure or building.
• The depth of beam is represented by 'H'.
• Section Modulus:  Section modulus is an important property for the cross section in the beam. Section modulus determines the bending strength of a beam.
• Section modulus can be elastic or plastic type.
• The shape of cross section can be of different types- circular, rectangular, diamond etc.
• Section modulus is represented by S.
• The relation between Section Modulus and Beam depth:

                         S ∝ H²

• The depth of beam becomes double ⇒ H' = 2H

                                                                          S' ∝ H'²

• The ratio:  $\frac{S}{S'}$ = $\frac{H^2}{H'^2}$ = $\frac{H^2}{4H^2}$ = 1/4

                        S' = 4S

∴The section modulus will become four-times.