Frequently Asked Questions
The drain unblocking was organised and presumably paid for by the client and is therefore not defined cost, because it is not a cost that has been incurred by you, see clause 11.2(24) and the wording of the schedule of cost components. Defined cost is cost that you have incurred, not the client. The project manager can arrange for works like this to be carried out by others, but the costs of that do not form part of defined cost or the price for work done to date. In addition, if those works delayed or disrupted your work, that would be a compensation event under clause 60.1(5).
The only way you could be responsible for paying for these works, such that the costs formed part of the price for work done to date, is if the project manager (not supervisor) had instructed you to arrange and pay for them with the drainage department. But that instruction would be a change to the scope and therefore a compensation event under clause 60.1(1), and that in turn would increase the total of the prices. The costs for it incurred by you, plus the fee, would then be included in the price for work done to date. Therefore, it will have no effect on the calculation for the share.