Stage B · Stress, materials and member behaviour
Stress, materials and member behaviour: stage assessment
Modules 7 to 12: stress and strain, material behaviour, bending, shear, torsion and composite sections. Watch for questions where the obvious formula is the wrong one.
This draws on the whole stage rather than one module, and several questions need two ideas combined. Work them out properly before checking — the point is to find out what you can do unaided, and a hint taken early tells you nothing.
There is no pass mark and nothing is recorded anywhere but your own browser. If a question defeats you, the module it came from is listed alongside.
Module checkpoint
Check what you have taken in
6 questions
Question 1
A steel bar 3.00 m long with a cross-sectional area of 1500 mm² carries 210 kN in tension, with E = 205 000 N/mm². How much does it stretch, in mm?
Question 2
A rectangular beam 200 mm wide and 500 mm deep carries a bending moment of 180 kNm. What is the maximum bending stress, in N/mm²?
Question 3
That same section is made of steel with σy = 355 N/mm². What is its fully plastic moment, in kNm?
Question 4
A rectangular bar 80 mm × 20 mm is to carry a torque. Which is the right approach?
Question 5
A solid circular shaft of diameter 100 mm carries a torque of 12.0 kNm. What is the maximum shear stress, in N/mm²?
Question 6
A fully restrained steel member (E = 205 000 N/mm², α = 12 × 10⁻⁶ per °C) is heated by 35 °C. What is the magnitude of the stress, in N/mm²?