18 During the approval process, the Council retained an independent town-planning consultant, Robert Chambers of Briggs Brindle & Chambers, to assist with its assessment of the application and assist with the drafting of conditions of approval pertaining to the development. The consultant prepared a draft set of conditions which included a condition requiring compliance with Part E 1 of the BCA, adding a note to the following effect:
"This will require the sprinklering of the entire building and provision of additional essential services as it exceeds 25 m in the effective height as defined by the Building Code of Australia. Alternatively, reduce the effective height to under 25 m" [letter from Briggs Brindle and Chambers]
19 An initial assessment of a development application approved on 2 October 1996 by the relevant officer of the Council, expressly noted that the building appeared to be in excess of 25 metres with a sprinkler system required. This assessment is to be found on page 5 of the letter from the Council to the developer of 20 August 1996 which includes the following:
"It appears that the building height exceeds an effective height of 25 metres. In this regard, the whole building is to be provided with a suitable sprinkler system in accordance with clause E15 of the Building Code of Australia "
20 Condition 73(j) of the Development Approval required the applicant to comply with Part E1 of the BCA. While it was not expressly stated on the Development Approval, a key element of compliance with Part E1 of the BCA was the calculation of the effective height of the building. Part E.1.5 provided that buildings with an effective height of more than 25 metres were required to include, inter alia, a suitable sprinkler system, as well as other fire safety systems.
The third development application - DA 31/97
21 At some point around about the end of 1996 there was an amendment to the local environment plan which meant that development consents that had been granted became void: hence the developer had to effectively relodge the application. A further Development Application (DA 31/97) was lodged with RCC in January 1997 and approved by RCC on 4 June 1997. Council's records state that the later application was 'identical in form and substance to that which had been earlier approved'.
22 It was also a term and condition of the development approval relating to DA 31/97, being Condition 71(j), that the building comply with Part E1 of the BCA with respect to (inter alia) fire safety. Again, the DA conditions contained no express notation as to the draft Conditions of Consent (drafted by Robert Chambers) in relation to DA 226/96 that made explicitly clear that compliance with Part E1 of the BCA would require the sprinklering of the entire building.
Building Application 390/97
23 On 27 June 1997 a Building Application was lodged for the residential component of the building. This BA, known as "BA 390/97" was approved on 25 July 1997.
24 Plans dated June 1997, and received by the Council on either 15 or 25 July 1997 [Ex JPD4 E], purport to show that the building has an "effective height" of 24.995m. This was marked on the building plans. In fact, as the Council admits, by reference to the BCA definition, the effective height on the approved plans was in fact greater than 25 metres. This was due, at least in part, to the fact that the effective height recorded on the plans was calculated from the floor of the top story to a level representing the top of a set of fire stairs, rather than, as required, from the floor of the top story to the floor of the lowest story providing direct egress to a road or open space.
25 Despite the advice it had received from Robert Chambers in August 1996 to the contrary, the Council, in approving the Building Application, imposed no condition on the developer to install any sprinkler system and provided no reason as to why no such condition was imposed. The inference to be drawn is that RCC either did not direct its mind to the issue at all, or that it (mistakenly) considered that the effective height of the building was less than 25 metres [Rockdale City Council Building Approval dated 25 July 1997].