A square box beam is made of two 20X80-mm planks and two 20X120-mm planks nailed together as shown. We know that the spacing be- tween the nails is s=50 mm and that the allowable shearing force in each nail is 300 N, calculate (a) the largest allowable vertical shear in the beam, (b) the corresponding maximum shearing stress in the beam. 20 mm 80 mm 20 mm 120 mm

A square box beam is made of two 20X80-mm planks and two 20X120-mm planks nailed together as shown. We know that the spacing be- tween the nails is s=50 mm and that the allowable shearing force in each nail is 300 N, calculate (a) the largest allowable vertical shear in the beam, (b) the corresponding maximum shearing stress in the beam. 20 mm 80 mm 20 mm 120 mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Planar Stresses

Question

A square box beam is made of two
20X80-mm planks and two
20X120-mm planks nailed together as
shown. We know that the spacing be-
tween the nails is s=50 mm and that the
allowable shearing force in each nail
is 300 N, calculate (a) the largest
allowable vertical shear in the beam,
(b) the corresponding maximum
shearing stress in the beam.
E
20 mm
80 mm
20 mm
S
120 mm
S

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