463. Drawings and specifications.

A breach of duty by an architect or engineer in respect of drawings and specifications may arise either through the drawings or specifications being defective or incomplete, or through their not being supplied to the contractor either in proper time or at all1.

The design of a building or of works may be defective or incomplete, for example: (1) as not being in accordance with the art and science of architecture, or as being opposed to sound principles of building or engineering2; (2) as not being in accordance with the instructions of the employer; (3) as contravening statutes and byelaws3;