(a)"Class A fire". - (a) Fire due to combustible materials such as wood, textiles, paper, rubbish and the like-(i)"Light hazard". - Occupancies like offices, assembly halls, canteens, restrooms, ambulance room and the like;(ii)"Ordinary hazard."-Occupancies like saw mills, carpentary shop, small timber yards, book binding shops engineering workshop and the like;(iii)"Extra Hazard". - Occupancies like large timber yards godowns storing fibrous materials, flour mills, cotton mills, jute mills, large wood working factories and like;