Maintenance contract of civil works from ip extension to shiv vihar metro stations including viaduct and rss of line-7.&#x0d

Installation of two passenger lifts capacity of each 680 kg and one goods lift capacity 2000 kg for g plus5 storied sdf1 building including dismantling existing lifts civil repair electrical installation and all other ancillary works at sdf1 in shilp

1)forged heat treated rough machined and ultrasonically tested retaining ring to drg. no. 34028042012#01, rev.04, size- 4661,-0 mm o/d x 4250,-2 mm i/d x 220 mm height, and spcn. no. bp19383. alternatively bp19381 or x4 crnimnmo n 19165 is also acceptable. qty: 8 no 2)forged heat treated rough machined and ultrasonically tested retaining ring to drg. no. 34028042016#01, rev. 04, size- 4901,-0 mm o/d x 4500,-2 mm i/d x 230 mm height, and spcn. no. bp19383. alternatively, bp19381 or x4 crnimnmo n19165 is also acceptable. qty: 11 no 3)forged heat treated rough machined and ultrasonically tested retaining ring to drg. no. 34028042020#01, rev. 04, size- 4241,-0 mm o/d x 3880,-2 mm i/d x190 mm height, and spcn. no. bp19383. alternatively, bp19381 or x4 crnimnmo n19165 is also acceptable. qty: 4 no 4)forged heat treated rough machined and ultrasonically tested retaining ring to drg. no. 34028042033#01, rev. 03, size- 5401,-0 mm o/d x 5040,-2 mm i/d x140 mm height, and spcn. no. bp19383. alternatively, bp19383 or x4 crnimnmo n19165 is also acceptable. qty: 4 no 5)forged heat treated rough machined and ultrasonically tested retaining ring to drg. no. 44028042035#01, rev. 08, size- 5900,-2 mm o/d x 5450,-2 mm i/d x 200 mm height, and spcn. no. bp19383. alternatively, bp19381 or x4 crnimnmo n19165 is also acceptable. qty: 2 no

Installation of fire detection and sprinkler system at common facility building (cfb), repair of leakage in ring main and wet riser, connection of wet riser with ohr in each block (all sdfs) through non- valve, provision of smoke extraction sys