State the term - constant eccentricity, Civil Engineering

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State the term - constant eccentricity

A pre-stressed concrete beam has a width of 300 mm and an overall depth of 450 mm. The permissible stresses in tension and compression due to pre-stressing alone are 5 N/mm² and 30 N/mm², respectively. Find the required pre-stressing force in the tendon and the eccentricity of the tendon, if a straight tendon with a constant eccentricity is to be provided in the beam.

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