The Authority may presen, a line on one or both sides of any public street, provided a public notice!
the proposal has been issued by the Authority in the prescribed manner. Nl person shall construct or reconstruct any portion of any building on lani within the prescribed new street line.
24. S ettin g back b u ild in g s to th e p rescr ib ed stree t l in e —(1 If any building or any part of a building abutting on a public .streets within such line of the street, the Authority may require such building t be set back to the prescribed line, whenever it is proposed—
(a) to re-build such building or to take down such building,
(b) to remove, reconstruct or make any addition to or struct!^ alteration in any portion of such building which is within the regular linef the street.
(2) When any building or any part thereof within the prescribed 111 of the street falls down or is burnt down or is taken down, und the provisions of this Act or otherwise, the Authority may at once ta possession of the portion of land within the prescribed line o f t street previously occupied by the said building and if necessary, cle the same.
(T) Land acquired under the foregoing sub-sections shall, henceforwa be deemed to be a part of the public street.