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In an industrial structure, four vertical identical steel beams are used to supporta platform of mass M = 120 tons. The beams have "I - type" profile, type HE -120

A, with the cross-sectional profile being represented in the following diagram: Each beam is 3 m long, while the dimensions of the cross - sectional profile of I- type family of steel beams are listed in the table below: Determine: a) The compression of each beam under the load (ignore the inner rounded corners): b) If the initial beams are replaced by two beams of HE- 160 A type, what would be the deformation of each new beam under the same load? c) Considering that the Compressive Strength of the later, HE - 160 A type is CS = 280 MPa, determine what extra mass the beams (together) can support before failing?

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