Project Summary

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Springfield Lakes - Low Level Dam
Delfin Lend Lease

Client	Delfin Lend Lease
Location	Springfield Lakes Blvd, Springfield Lakes
Contractual Completion Date	December 2009
Original Contract Value	$14.7M

McIlwain Civil were commissioned by Delfin Springfield Pty Ltd in July 2008 to construct the final of the three dams which form a vital part of the largest master planned community in Australia. The low level dam is to be the largest of the three lakes covering an area of 10 Hectares and holding an approximate volume of 282ML.
The construction of the project included a multi-medium dam embankment wall, a cascading reinforced concrete spillway approximately 36m wide and 150m long with 5 levels dropping a total of 8.5m, a two lane twin span bridge structure, architectural features, including pedestrian look out platforms as well as bulk earthworks to future residential development areas, trunk sewer diversions, street lighting and electrical works, parkland, carpark and lake floor improvements.

PROJECT SYNOPSIS

20Ha of Clearing & Grubbing
300,000m3 of Earthworks including Non-Rippable Rock Excavation
17,000m3 of Imported Clay Core
15,000 tonne of Fine & Coarse Filter Materials
8,000m2 of Rip Rap Protection
100m of 450mm Flanged DICL (Concrete Encased) Outlet Pipe
270m of 375mm Truck Sewer (DICL & PVC)
3,500m3 of Structural Concrete (S40)
500 Tonne of Reinforcing Steel
36 no Bridge Deck Unit (18.5m long)
600m of Safety Rails (Brifen Wire Rope, Bridge Rails, Pedestrian Ballustrade & W-Beam Guardrail)
900m of Concrete Footpath
5,000m2 of Asphalt Roadway including granular pavement
3,000m of Electrical Conduits for Reticulation and Street Lighting