Design Brief
Figure 1 represents the floor plan of an office building to be constructed in the Central Business District of Sydney. The building is to be eight storeys in height with each level being used as an office and with one levels of car park below the street level. Your team is assigned to design all the columns below both the level 1 and the street level, the floor slab, the primary and secondary beams including a transfer beam so that one column is terminated at the level above the street as shown in Figure 2.
Design Information and Requirements
- Beam concrete compressive strength, f'c = 32 MPa (You are allowed to increase f'c if needed)
- Reinforcing steel strength, fy = 500 MPa (Use N Class bar)
- Slab live load = 3.0 kPa (Imposed load)
- Superimposed dead load = 1.0 kPa (Provision for partitions)
- Concrete density = 24 kN/m3
- Columns are 500 mm x 500 mm
- Beam widths are fixed at 500 mm
- Maximum beam depths should not exceed 1000 mm
- Slab depth is 200 mm
- Reinforced concrete service core is 500 mm in wall thickness
- Concrete slabs are supposed to be built monolithically with the supporting beams therefore the beams have to be designed as L or T-beams
- All the outer beams have to be designed as continuous beams
- All the calculations have to be presented in the report
- Report submitted has to be the original copy (No scanned copy allowed)
Part 1: Load Combinations:
a) Determine the load combinations for the permanent, imposed and superimposed loads using AS/NZS 1170.0 and 1170.1 (2002).
b) Determine the required design actions such as M*, V* and N* for slab, column and beam designs for both serviceability and strength limit states.
c) Provide the required bending moment, shear and axial force diagrams for the beams, slabs and columns using the software package such as Microstran or other forms of calculation.
Please take notes that wind loads will be resisted by the service and lift core of the structure which is subcontracted out. (Not required to design by your team)
Part 2: Analysis and Design:
Design all the required members such as the floor slabs, columns and beams and provide adequate drawings or sketches showing elevations and cross-sections for the each members.
a) Floor slabs
b) Columns
c) Primary and secondary beams
d) Detailing, report presentation and group management