The tension flange of a cast iron girder is 240 mm wide and 40 mm thick. The compression flange is 120 mm wide and 20 mm thick and its web is 300 mm x 20 mm. Find the load per metre run which may be carried over a span of 4 m by a beam simply supported at its ends, if the maximum permissible stresses are 90 N/mm² in compression and 30 N/mm² in tension.

The tension flange of a cast iron girder is 240 mm wide and 40 mm thick. The compression flange is 120 mm wide and 20 mm thick and its web is 300 mm x 20 mm. Find the load per metre run which may be carried over a span of 4 m by a beam simply supported at its ends, if the maximum permissible stresses are 90 N/mm² in compression and 30 N/mm² in tension.

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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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

The tension flange of a cast iron girder is 240 mm wide and 40 mm thick. The compression flange
is 120 mm wide and 20 mm thick and its web is 300 mm x 20 mm. Find the load per metre run
which may be carried over a span of 4 m by a beam simply supported at its ends, if the maximum
permissible stresses are 90 N/mm² in compression and 30 N/mm² in tension.

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