Physics, asked by FelishiaARMY, 3 months ago

Answer this correctly plz​

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Answered by samuel46
1

Answer:

for joining steel welding the metal with another metal is done.

Answered by Swoyamshree10
2

Answer:

They consist of plates and angles riveted together. Plates and angles form an I-section. They are used in building construction and also in bridges. Plate girders are economically used for spans upto 30m.

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