This case study of a residential apartment building is applied using the NCC provision A2.2(4). This four-step process demonstrates a sanitary drainage Performance Solution.
[Music plays and the Australian Building Codes Board (ABCB) logo appears with a photo of the Manhattan apartments in the background. Followed by the heading; Performance Solution Case Study PLUMBING. The heading then transitions to; Manhattan on the Park Apartments]
[The ABCB logo fades off the screen, the image holds in the background and the text box transitions to cover majority of the screen showing the heading; SITUATION OVERVIEW and the text; The 17 storey Manhattan Apartments are a mixed-use residential apartment complex containing 330 residences and ground floor retail.]
[The heading holds; SITUATION OVERVIEW and the text changes to two columns. The text in the left column; apartments located on a block with 150 mm sewer tie, and the text in the right column; DtS provisions (AS/NZS 3500.2) required 225 mm Main drain]
[The image holds in the background and the text box holds covering majority of the screen. The heading holds; SITUATION OVERVIEW and the text transitions to; Would have required 80m of utility main to be replaced at an average depth of 4m. The text box 4m transitions in late followed by a transition of text; Early calculations indicated this would have come at a huge cost.]
[The heading transitions to; PERFORMANCE SOLUTION and the text transitions to; The design team produced a solution that ultimately reduced costs associated with the construction of the building.]
[The heading holds; PERFORMANCE SOLUTION and the text transitions to two columns, the text in the right column; The Performance Solution was based on the equivalent population (EP) method outlined in the ActewAGL Water Supply and Sewerage Standard. The text in the right column; It was further verified by the Probably Simultaneous Demand (PSD) solution detailed through the Plumbing Code of Australia (PCA) 2012, which yield a main horizontal collection drain diameter of 150 mm.]
[The heading holds; PERFORMANCE SOLUTION and the text transitions to; A mix of Assessment Methods, including Expert Judgement were used to evaluate the design, backed by extensive research findings conducted at the Heriot-Watt University in Scotland.]
[The heading holds; PERFORMANCE SOLUTION and the text transitions to; Modelling demonstrated that when the drainage system operated during peak periods, the size of the main drain would be capable of removing all waste water.]
[The heading transitions to; THE FINAL DESIGN and the text transitions to two columns, the text in the right column; suspended internal drainage system in the basement connecting 32 vertical stacks. The text in the right column;150 mm elevated drainage system with estimated peak flow rates of 6 l/s – 7 l/s.]
[The heading holds; THE FINAL DESIGN and the text transitions to; Flow rates that correspond with depths of 70 mm – 77.6 mm allowing adequate free air flow across the top of the drainage system.]
[The heading transitions to; BENEFITS and three text boxes appear with white ticks in a yellow circle. The text box on the left; Delivered a drainage solution that did not adversely affect residential or commercial amenity. The text box in the middle; Reduced costs associated with the construction of the building. The text box on the right; Additional research into the flow characteristics within a drainage system.]
[The text transitions to; Name: Manhattan Apartments, Location: Canberra, ACT, Project Type: New Construction, Building Type: Multi-unit residential, Performance Solution: Plumbing, Architect: May + Russell Architects, Engineering consultant: Sellicks Consultants, Hydraulic consultancy: Heriot Watt University (Scotland).]
End of video.