Extra over item 10.1 to 10.12 when work is done in situ in small quantities not exceeding 0.30 cum per block in situ such as staggered block arrows, concrete block over inverted filters, bed plates arches etc.
Extra over item 10.1 to 10.12 when work is done in situ in small quantities not exceeding 0.30 cum per block in situ such as staggered block arrows, concrete block over inverted filters, bed plates arches etc.