Section 14(1) in The Chennai City Corporation Building Rules, 1972
(1)No reinforcing steel or structural frame work of any part of any building of structure shall be covered or concealed in any manner whatever without first notifying the Engineer and obtaining his permission therefor at three stages, namely:-(a)after the foundations are laid and before the trenches are closed;(b)after the framing, fire blocking and bracing are in place and all pipes, chimneys and vents are complete; and(c)after the building is completed and is ready for occupancy.
