f) For ventilators of height greater than 900 mm, brackets or alternative means of support shall be fitted according to the arrangement acceptable to the Society. See also Pt B, Ch 8, Sec 10, [9]. Pipe thickness is not to be taken less than as indicated in [9.1.8].
g) All component parts and connections of the air pipe or ventilator are to be capable of withstanding the loads defined in item i).