Section 67(3)(b) in Assam Notified Urban Areas (Other than Guwahati) Building Rules, 2014
(b)side and rear setback should be increased by 0.3 m for every 1.5 m of additional height of the building in addition to the set backs already prescribed for a building of 15 m height up to a maximum of 1.5 m of additional set backs on both rear and sides.