Suitable shelters for sun and rain and other atmospheric agencies affecting the health of the people shall be provided for the would be purchasers of tickets standing in queues. The shelter may be of permanent PUCCA construction or of a light type of construction with asbestos cement sheets over steel or precast reinforced concrete members. The shelter shall be so arranged that they should not affect light and ventilation and at the same time give protection against sun and rain for would be purchasers of tickets standing in queues.