Assignment 5: Transverse loading

Due date: Monday Feb 6, 2012

1. (Midterm 2/53)

The figure shows the cross section of the beam made of

three identical steel plates welded together by four welding

lines as shown. If allowable shear along each weld line is 18

kN/m, determine the maximum vertical shear that can be

safely carried by this beam. (20 marks)

2. (Midterm 1/53) The beam is fabricated from four steel plates, and it is subjected to a shear force of V = 200 kN. (a) Show that ̅ = 0.080196 m from the bottom and INA = 4.8646(10-6) m4. (b) Determine the shear stress at point A, B, C and maximum

shear stress max in the beam. (20 marks)

Weld line 120 mm

30 mm

30 mm

120 mm

30 mm