outer external sides 2dG (height in mm) x dG (width in mm), and thickness tG (in mm). You should assume all corners are

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outer external
sides 2dG (height
in mm)
x dG (width
in mm), and
thickness tG (in
mm).
You should assume all corners are perfectly square.
The RHS is made from steel (Es = 200000
MPa), and is filled with concrete (Ec =
25000 MPa). You should assume both materials exhibit linear elastic
behaviour. The concrete cracks in tension at 5.75 MPa.
The RHS is used as a beam, bending about
the horizontal axis.
Part G
dG = 140 mm
tG = 4 mm
What is the maximum tension stress in the steel (in MPa) when
the concrete cracks?