3 The further amended statement of claim, filed 30 August 2007, pleads the case essentially in two ways. First, it is alleged that the first to fifth defendants, who were involved in the design and/or construction of a 1200mm Circulation Drain running immediately adjacent to the western boundary of the property (this work being part of the Patterson Lakes Development which included filling land, constructing dwellings, and developing the Patterson Lakes tidal waterways system to ensure adequate circulation of water), breached duties of care owed to the plaintiffs (as subsequent owners of the property) to perform their works relating to the Circulation Drain with reasonable care and skill. The consequence of their breach was the damage to the dwelling referred to above, which they claim from each defendant. Secondly, it is alleged that Timelink Pacific Pty Ltd and Wharington (the sixth and seventh defendants, who I will call "the builders" wherever convenient) breached duties of care owed to the plaintiffs (as subsequent owners of the property) and breached warranties implied by s 8 of the Domestic Building Contracts Act 1995. The consequence of their breaches was the damage to the dwelling referred to above. The builders' alleged breaches fall into two categories, first a failure to properly carry out site preparation works, and secondly a failure to properly build the dwelling. More specifically, the particulars allege that the builders failed to ensure that the tops of two pre-existing concrete piles on the land were cut down to achieve a 300mm clearance between the top of those piles and the underside of the footing beams to allow settlement of the slab, and the builders failed to place 300mm of compacted sand between the cut-down piles and the footing beams, as prescribed by the design drawing.