Orlit Pty Ltd v J F & P Consulting Engineers Pty Ltd

Orlit Pty Ltd, the appellant, brought an action against J F & P Consulting Engineers Pty Ltd, the respondent, in the Supreme Court of New South Wales, seeking damages for alleged negligence in the design of foundations for residential units. The respondent had designed floating slabs, rather than stiffened rafts, for the foundations of the respondent/developer’s units, which were built in moderately reactive clay soil. The foundations subsequently moved, leading to significant damage to the buildings. The central issue before the court was whether the respondent had breached its duty of care in designing the foundations for the units.

The court examined whether the respondent had exercised the requisite standard of care and skill expected of a professional engineer. The court considered the technical evidence presented by both parties, including expert testimony, and the relevant industry standards at the time of the design. The court also assessed whether the respondent’s design was reasonable and appropriate for the specific soil conditions and building requirements. The court found that the respondent had failed to adequately consider the reactive nature of the clay soil and the potential for movement, which was critical given the design of the foundations. This oversight constituted a breach of the duty of care owed by the respondent to the appellant.

The court concluded that the respondent was liable for the damages caused by the movement of the foundations. The court found that the respondent's design did not adequately account for the reactive nature of the soil, which was a foreseeable risk. The court held that the respondent should have recommended a stiffened raft foundation, given the soil conditions and the potential for movement. As a result, the court found that the respondent was liable for the damages incurred by the appellant due to the failure to exercise the appropriate standard of care. The court ordered the respondent to pay damages to the appellant, reflecting the costs associated with the foundation movement and the subsequent damage to the buildings.