16 Contract costs shall comprise:

(a) costs that relate directly to the specific contract;

(b) costs that are attributable to contract activity in general and can be allocated to the contract; and

(c) such other costs as are specifically chargeable to the customer under the terms of the contract.

17 Costs that relate directly to a specific contract include:

(a) site labour costs, including site supervision;

(b) costs of materials used in construction;

(c) depreciation of plant and equipment used on the contract;

(d) costs of moving plant, equipment and materials to and from the contract site;

(e) costs of hiring plant and equipment;

(f) costs of design and technical assistance that is directly related to the contract;

(g) the estimated costs of rectification and guarantee work, including expected warranty costs; and