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Question 2 The built –up beam shown in figure 2 below is made up of an I-section and flat bar. It is simply supported and carries a uniformly distributed load of 5 kN/m over the whole span of 4 m. 2.1 Calculate the position of the centroid and second moment of area about the horizontal and vertical axes through the centroid for this built up section. /6/ 2.2 Find the Section modulus Z or Zx at the outer fibres (i.e. Top & Bottom positions). /3/ 2.3 Calculate the maximum bending stress in the beam. /5/ 2.4 Plot a bending stress distribution diagram for this built-up section. /1/ 203x152x52, I-Section (Taper flange) 200x20 rectangular block Figure 2 [15]

          Question 2
The built –up beam shown in figure 2 below is made up of an I-section and flat bar. It is simply supported and carries a uniformly distributed load of 5 kN/m over the whole span of 4 m.
2.1 Calculate the position of the centroid and second moment of area about the horizontal and vertical axes through the centroid for this built up section. /6/
2.2 Find the Section modulus Z or Zx at the outer fibres (i.e. Top & Bottom positions). /3/
2.3 Calculate the maximum bending stress in the beam. /5/
2.4 Plot a bending stress distribution diagram for this built-up section. /1/
203x152x52, I-Section (Taper flange)
200x20 rectangular block
Figure 2
[15]

Question 2
The built –up beam shown in figure 2 below is made up of an I-section and flat bar. It is simply supported and carries a uniformly distributed load of 5 kN/m over the whole span of 4 m.
2.1 Calculate the position of the centroid and second moment of area about the horizontal and vertical axes through the centroid for this built up section. /6/
2.2 Find the Section modulus Z or Zx at the outer fibres (i.e. Top Bottom positions). /3/
2.3 Calculate the maximum bending stress in the beam. /5/
2.4 Plot a bending stress distribution diagram for this built-up section. /1/
203x152x52, I-Section (Taper flange)
200x20 rectangular block
Figure 2
[15]

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