69Inclusion of incidental expenses

69 Inclusion of incidental expenses

The corporation may include in the estimate of the cost of the execution of a scheme –

(a) the cost (computed according to a usual method of costing) of the provision by the corporation of any materials, plant, and labour, including a reasonable amount for the use and depreciation of any plant so provided; and

(b) such sum (not exceeding 12·5 per cent of the estimated cost of the works) as the corporation thinks proper in respect of –

(i) the making of searches and the preparation of specifications, maps, plans, sections, and elevations in connection with the works;

(ii) the preparation of the scheme;

(iii) the supervision and inspection of the works during construction; and

(iv) printing and posting in connection with the scheme.