Section 26(3)(vii) in New Okhla Industrial Development Area Building Regulations, 2010
(vii)Rockery, well and well structures, water pool, swimming pool (if uncovered), uncovered platform around tree, tank, fountain, bench, chabutra with open top and unenclosed by side walls, compound wall, gate, slide, swing, uncovered staircase (unenclosed and uncovered on three sides except for 0.9 metre high railing/wall and open to sky), overhead tanks on top of buildings, open shafts, culverts on drains.