Chrome $22$:$12430$

Lecture $8$ handout

Lecture $7$ handout

Assignment NO$.3$

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Tutorial $4$

AMA$2131$Ch$6$Vecto...

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CSE$20201-$ Structural Mechanics

Tutorial No$.5$

Problem $4.$

In a small gantry for unloading goods from a railway wagon, it is proposed to carry the lifting tackle on a steel joist $(240mm$ by $100mm,$ as shown in Figure $1($b$))$ weighing $0\mathrm{.}32k\frac{N}{m},$ supported on a $5m$ span. The equivalent dead load on the joist due to the load to be raised is $P=30kN$ and this may act at any point of the middle $4m$ as shown in Figure $1($a$).$ The allowable bending stress and the allowable shear stress for the steel are $115$MPa and $75$MPa, respectively. Show by appropriate calculation whether the joist is suitable for the job.

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