Scripture Union v Prime Industrial
[2005] NSWSC 736
At a glance
Source factsCourt
Supreme Court of NSW
Decision date
2005-06-28
Before
McDougall J, Rolfe J
Source
Original judgment source is linked above.
Judgment (18 paragraphs)
The application of the referee's methodology 120 I have described the referee's methodology in paras [108] and [109] above. The referee considered that Rooney & Bye should have designed a slab to accommodate movement in the pad beneath of 20 mm. This followed from his finding, based on the conclave of the geotechnical experts, that movement of about 20 mm could have been expected having regard to the classification of the soil and normal weather patterns. The outcome of the conclave is set out in appendix 4.1. The conclusion as to weather patterns is found in R128. The conclusion (or assumption) as to likely settlement is not explicitly drawn, but would appear to follow from the application of the consensus view of weather patterns (R128) to the experts' views on range of movement summarised in the answer to question 6 in appendix 4.1. It may also follow from the referee's apportionment of the overall shrinkage in R312(iii) where he found that over-wet fill and over-wet sub-grade contributed 42 mm of the 62 mm of observed settlement, and "balance of sub-grade" - ie, as I understand it, the nature of the clay soil itself - contributed the remaining 20 mm. This is certainly the basis propounded in para 58(vi) of the Prime companies written submissions dated 8 March 2005, and I think that it is a correct analysis of the referee's findings. 121 Because the Rooney & Bye design did not accommodate the 20 mm of shrinkage that might have been expected having regard to the soil type and normal weather patterns, the referee concluded that Rooney & Bye was responsible for 20/62 of the damage caused by shrinkage. Because the balance of the shrinkage was caused by improperly prepared fill or sub-grade, the referee concluded that the Prime companies were responsible for 42/62 of that damage. 122 The Prime companies attacked the referee's reasoning because it is based, in their submission, on an assumed fill depth of 600 mm. The referee certainly referred to calculations performed by one of the experts, Dr Burman, which were based on that assumption: see R311. However, that is directed to showing the relative contributions of fill and sub-grade to the calculated overall settlement of 62 mm below the slab. That is not of itself fundamental to the reasoning process set out in R312 which, as I have noted, assessed the relative contributions of the improperly prepared fill and sub-grade on the one hand and the natural properties of the sub-grade on the other to the overall calculated settlement of 62 mm. It does not appear from R312 that the calculations carried out therein - in particular, the critical calculation that I have just described, which appears in sub-para (iii) - is based on the assumed fill depth. 123 In any event, I think, it was open to the referee to come to the conclusion that he did in relation to fill depth. I discuss this below, in relation to the challenge to the referee's finding on that point. For present purposes, it is sufficient to say that, it having been open (as I conclude) to the referee to make that finding, then if (contrary to my present understanding) the assumed fill depth were fundamental to his allocation of responsibility, it was an assumption that was open to him on the facts. 124 The referee's approach to the apportionment of responsibility seems to me to show a thorough, analytic and scientific approach to the topic, informed to a considerable degree by his undoubted expertise. It does not seem to me to be vitiated by errors of the kind referred to in para [4(6)] above. I see no reason to interfere with it.