Problem 1: A simply supported slab carries a superimposed dead load of 2 kPa and live load of 3kPa. Length of the slab is 5m and width of the slab is 4 m. exposure classification is A1. Design the slab as per AS3600 (design includes strength and serviceability check). Use welded wire fabric.
Problem 2: A column 400x400 mm plan dimensional is reinforced with 4N24 bars and R10ties@150c/c. Grade 32 concrete is used. A cover of 25mm is provided. The column is subjected to an axial force of 600kN and a bending moment of 25 kNm. The column is pinned at the bottom and is restricted at the top. The length of the column is 4.5m. check whether the provided reinforcement comply the AS3600 requirement and if not re-design the column.
Problem3: A temporary bridge of 10m span is used in a construction site and it is constructed using a number of 610UB101 steel beams spaced at 2m with a 100mm height timber deck on top. During construction this bridge will be subjected to a slowly moving live load of 10 kN/m. the density of hardwood timber used can be taken as 12 kN/m3. Determine adequacy of the section to carry the load combination of dead and live load. Assume the ends of the beam are fully restrained.
Problem 4:
1. Explain the terminologies 'short and long columns"
2. Why the "cover to reinforcement and bar spacing" measurements are important in the design of structural elements.