5.—(1) A relevant authority to which a plan and section of work is required to be submitted or furnished may accept as, or in lieu, of, a plan and section any description of the works whether in diagram form or not, which appears to it to be sufficient.
(2) References in this Schedule to a plan and section include any such description so submitted or furnished to the form of which the relevant authority has not objected within the time allowed under paragraph 7(2).