06-11-2019 30N-18-0252-TNT-6753921-2 Commercial-In-Confidence Page 1 of 15 Vipac Engineers and Scientists Limited 279 Normanby Rd, Port Melbourne, VIC 3207, Australia Private Bag 16, Port Melbourne, VIC 3207, Australia t. +61 3 9647 9700 | f. +61 3 9646 4370 | e. [email protected]w. www.vipac.com.au | A.B.N. 33 005 453 627 | A.C.N. 005 453 627 Caydon Cremorne No 2 Development Pty Ltd 06-11-2019 Level 2, 436 Johnston Street Ref: 30N-18-0252-TNT-6753921-2 Abbortsford, 3067, Attention: Giuditta De Santis Dear Giuditta, 2 Gough Street, Cremorne - Stage 2 Vipac Engineers & Scientists Ltd was commissioned by Caydon Cremorne No 2 Development Pty Ltd to carry out wind tunnel testing to determine the likely pedestrian level wind conditions for the proposed development at 2 Gough Street, Cremorne - Stage 2. Wind tunnel testing was conducted in 2016. Section 72 Amended Application Plans (December 2018) were provided to Vipac in October 2019 and compared to the original 2016 design and wind tunnel test results. The building was tested in 2016 using scale model wind tunnel testing of the proposed development and surroundings to determine a quantitative description of the wind environment adjacent to the building. By comparing the amended scheme to the design that underwent wind tunnel testing, we can determine the effect of these changes on the pedestrian wind environment adjacent to the development. The massing of the design has changed since the wind tunnel testing was undertaken; however, based on our experience as a wind engineering consultancy and the results of the testing, we can determine the likely wind environment with the updated design. The main points to note from a wind environment perspective are: The massing of the development has changed significantly. The development now presents a wider mass to the west up to Level 14, whereas the tested design had a higher 20 level tower to the south and lower 6-level tower to the north (refer Figure 1 - Figure 10). The increase in mass facing to the west would be expected to result in an increase in vortex shedding effects into Gough Street. However, the reduction in height would be beneficial from a wind environment perspective, as would the openings between the buildings allowing northerly winds to pass through, rather than be directed to building corners. As such, we expect that the overall wind environment would be similar to that measured in the original test. The south tower form has changed with the silos retained and a separation introduced between the tower and the silos (refer Figure 5 - Figure 10). The openings between the buildings allowing northerly winds to pass through, rather than be directed to building corners would be expected to be beneficial from a wind environment perspective.
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Attention: Giuditta De Santis · Attention: Giuditta De Santis Dear Giuditta, 2 Gough Street, Cremorne - Stage 2 ... 30N-18-0252-TNT-6753921-2 Commercial-In-Confidence Page 9 of 15
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06-11-2019
30N-18-0252-TNT-6753921-2 Commercial-In-Confidence Page 1 of 15
Vipac Engineers and Scientists Limited
279 Normanby Rd, Port Melbourne, VIC 3207, Australia
Private Bag 16, Port Melbourne, VIC 3207, Australia