Atimber beam consists of three 50 x 200 mm planks fastenedtogether
to form an i-beam 200 mm wide x 300 mm deep. if theflexural stress
of point a of the cross section is 7.5 mpa (intension),
determine:
a) the flexural stress at point b of the cross section.
b) the flexural stress at point c of the cross section.
c) the flexural stress at point d of the cross section.