Posted: September 28th, 2016

Design one way slab (Critical Grid) • Design column • Design footing

This project will introduce you to the aspects of the structural design process of a building made from reinforced concrete. As part of a structural design team you have been engaged by an architect to design a three storey building. Your design team will be in groups of 4. The specifications of the building are as follows: SPECIFICATION • Loading: Floor Finishes 0.9 kPa Ceiling and services 0.3 kPa Partitions 1.0 kPa Live Load 1.5 kPa roof Live Load 3.0 kPa internal floors • Characteristic concrete strength f’c = 32MPa • Aggregate size = 20mm. • Cold worked high yield reinforcement for longitudinal steel, hot rolled mild steel for shear reinforcement. Yield Strength fsy = 500MPa – Maximum bar length = 6m – 10mm < bar diameter < 40mm • Slab thickness = 200mm. (the slabs run one-way over the beams) • Beam width = 350mm. The overall beam depth is 500mm. • The beams run along grid line A, B and C (see figure 1) • Column section to be 350 x 350mm square • Foundations 1.0 m below ground level. Permissible soil-bearing pressure = 150 Kpa. • The structure has a 1st to 2nd floor, plus a roof, and the ground floor slab is not supported by the columns but rests on the ground. The frame can be considered as braced against lateral load (ie. do not need to consider wind loads in this project) Figure 1 Typical floor plan dimensions Figure 2 Building Frame Elevation (eg.gridline B) SCOPE OF WORK Each group will be required to: • Develop preliminary sketches for your structure • Estimate primary loads (DL and LL) on the one-way slabs, beam element, slab element and columns and determine load combinations for strength and serviceability • Summarise design actions (M*,V*,N*) for critical load combinations • Prepare final sketch drawings of selected elements of the structure including reinforcement detailing • Design the beam for shear, serviceability and deflection (Critical Grid) A 5m 6m 5m 5m B C 1 2 3 5m 6m 1 2 R 4m 4m 4m • Design one way slab (Critical Grid) • Design column • Design footing