University of Canberra Faculty of Arts & Design Assignment 1 Design Report – Loadings A typical floor plan of a 23-storey office building is as shown in Figure 1 (next page). The storey height, top-of-slab to top-of-slab is 3.8m. The concrete slabs are of thickness 130mm and supported on secondary beams (Beam “B1” in the plan). The secondary beams are supported by the girders (Beam “B2” in the plan). See section A-A, B-B and C-C for beam sizes. The key geometric properties of the floor are marked on the plan. The physical properties require the density of reinforced concrete which is 2,400 kg/m3. Assume all other reasonable sizes by way of scaling as needed. FLOOR & WIND LOAD ESTIMATION Showing all working which must be neat and clearly set out, answer the following: (a) Estimate the total volume of concrete contained in the typical floor represented. (b) Estimate permanent and imposed actions on the floor, as distributed loads (pressures) in kPa. Assume the self-weight of the floor finish, ceiling, mechanical/electrical service pipes and partitions is 2.0kPa. (c) Calculate permanent and imposed actions on a typical secondary beam (Beam “B1” in the plan) in kN/m. (d) Calculate permanent and imposed actions on a typical girder (Beam “B2” in the plan) in kN/m. (e) Calculate permanent and imposed actions on a typical edge beam (Beam “B3” in the plan) in kN/m. (f) Calculate permanent and imposed actions on the edge column “C1”, as concentrated load kN. Assume its diameter is 900mm. (g) For the 23-storey stacking model, Estimate the total load in kN on a typical footing corresponding to the foundation of column line C1. (h) Estimate the likely Wind Pressure qz if the building is located in waterfront Sydney CBD on a flat site. The above shall be undertaken in accordance with AS/NZS1170.1 – 2002 Permanent, imposed and other actions, and AS1170.2 – 2002 Wind Actions. PRESENTATION OF FINDINGS Present your computations and estimates in a coherent, professional practitioner style design report. Include all assumptions made and an explanatory interpretation of your findings.Figure 1