TENDER FOR EXPANSION OF ASH POND AT NALCO's ALUMINA REFINERY AT DAMANJODI BILL OF QUANTITIES IN THREE SCHEDULES

Transcription

1 TENDER FOR EXPANSION OF ASH POND AT NALCO's ALUMINA REFINERY AT DAMANJODI BILL OF QUANTITIES IN THREE SCHEDULES 1 OF 7

2 01 Excavation for seating the dam, toe drains & appurtenant M works, devlopment of various permanent roads, ramps including clearing of jungle, trees, removal of roots, shoring, strutting, dewatering, drainage, desilting, bailing out water and including placing neatly, disposing off the excavated stuff as directed with all lifts/depth as per drawings and lead as per preamble, complete in all types of soils and boulders not exceeding 0.15 cum. in volume excluding soft/hard rock as per specification and including for all. equipments,tools & tackles, labour etc, as per direction of Engineer-In-Charge. 02 a) Excavation for seating the dam, cut off trench and M appurtenant works,devlopment of permanent roads,ramps for ash reclamation in soft rock and boulders size above 0.15 cum. in volume with or without blasting including all necessary wedging, chiseling, benching etc. and also including shoring, desilting, bailing out water and placing neatly and disposing off the excavated stuff as directed with all lifts/depth and leads as per preamble etc. complete as per specification and including all equipment,labours etc. as per direction of Engineer-in-charge. b) Excavation for seating the dam, cut off trench and M appurtenant works,devlopment of permanent roads,ramps for ash reclaimation in hard rock and boulder size above 0.15 cum. in volume with or without blasting including all necessary wedging, chiseling, benching etc. and also including shoring, desilting, bailing out water and placing neatly and disposing off the excavated stuff as directed with all lifts/depth and leads as preamble, etc. complete as per specification. C.0. Page No.1 of 6 2 OF 7

3 B.F 03 Stripping for down stream slope of dam including exca- M vating portion of the existing earth dam, berms etc., removal of turfing, drains and sumps in surface drainage system and preparing surface as per drawings and specifications for joining with proper bonding to new earthwork and stacking useful material at a distance not exceeding 500m for reuse and disposing all waste materials as directed by Engineer-in-Charge. 04 Embankment filling by excavating from borrow pits, including key joints/benching for bonding, sorting of isolated boulders and pebbles, dozing, breaking clods, transportation of homogeneous material to dam site and formation of homogeneous embankment with selected soils from specified borrow pits including watering and compaction to the required density and dressing complete as per detailed specifications with all leads and lifts as specified in the preamble of BOQ. (@@) I). Same as above but lead upto 1KM. M ii). Same as above but lead above 1 KM upto 2 KM. M iii). Same as above but lead above 2 KM upto 3 KM. M iv). Same as above but lead above 3 KM upto 4 KM. M v). Same as above but lead above 4 KM upto 5 KM. M vi). Same as above but lead above 5 KM upto 6 KM. M vii). Same as above but lead above 6 KM upto 7 KM. M viii). Same as above but lead beyond 7KM. for every. M additional one km and part there of. (@@) :- The lead quantity shown in B.O.Q are tentative and this may be varried to any extend depending on site condition and requirement as per the direction of Engineer-in-Charge. Page No.2 of 6 3 OF 7

4 05 Providing and laying of filter materials as per drawings, specifications including transportation with all leads (as per preamble) and lifts ( as per dwgs), rehandling of materials, watering and compaction, all complete as per directions of Engineer-in-charge. i) Shielding filter on dam slope, graded sand, crushed stone undemeath rip rap and riprap. a) Rip rap M b) Crushed rock M c) Sand M ii) Drainaage filter horizontal filter / inclined filter. a) Crushed rock. M b) Sand. M iii) Vertical chimney filter. a) Crushed rock. M b) Sand. M Providing and laying of rock toe/rock filling with stone as per drawings,specifications including transportation with all leads (as per preamble)and lifts(as per dwgs), rehandling of materials,watering and compaction,all complete as per direction of engineer-in-charge. M Page No.3 of6 7 4 OF 7

5 07 Providing & placing in position PCC kerb stone of M15 Nos concrete for road way on top of dam of size 200mm X 200mm X 750mm long with embedment including all material, shuttering, casting, curing, fixing etc. complete as per direction of Engineer-in-Charge. 08 Providing & laying of turfing with pad grass for slope of M dam on downstream as per drawings, preamble & specification s and directions of Engineer-in-Charge. 09 Providing and laying stone masonry in C.M. 1:6 in side RM only for 1m length in toe drains, rest in dry masonry crushed rock filter and sand filter including transportation of material with all leads and lifts complete as per specification and drawings, finished and as per directions of Engineer-in-Charge including excavation as required. 10 Excavation in D/S slope of dam, along chimney M alignment, etc. and opening the top sand cap of chimney drain and back filling the remaining area ( after placement of chimney drain in continuation ) in layers as specified for the embankment as per drawing and including pumping/ bailing out of water from all sources and reuse of excavated material as directed by Engineer-in-Charge. 11 Rabate for reutilisation of suitable excavated materials M obtained from items 1,2 & 3, for formation of earth fill section of embankment as per specifications & directions of Engineer-in-charge including transportation with all leads and lifts as specified in the preamble of BOQ Page No.4 of 6 5 OF 7

6 12 Providing and laying the horizontal drain along the inner RM edge of berm made of 230mm rubble with cement mortar in C.M. 1:6 (Size as per drg.) including transportation of materials with alll leads(as per preamble) and lifts complete as per specifications and drawings, finished as per directions of Engineer-in-Charge. 13 Providing and laying the inclined drain in D/S slope at 20m RM interval with 230mm rubble with cement mortar in C.M. 1:6 ( size as per drg) including transportation of materials with all leads (as per preamble)and lifts complete as per specifications and drawings, fished as per the directions of Engineer-in-Charge. 14 Providing and laying catch pits made of 300mm Rubble Nos with cement pointing in C.M. 1:6 ( size as per drg) at 20m interval including transportation of materials with all leads (as per preamble) and lifts complete as per specifications & drawings, furnished as per the directions of Engineer-in-Charge. 15 Providing & laying 300mm dia hume pipe of NP2 class RM the berms of dam with collars jointed with cement mortar at 20m intervals including transportation of materials with all leads( as per preamble) and lifts complete as per specifications and drawings,furnished as per the directions of Engineer-in-Charge. Page No.5 of 6 6 OF 7

7 16 Providing and laying WBM road of 110mm compacted sqm thickness on the top of the dam using 90 to 40mm down graded approved metal aggregate with moonrum blinding including watering and compaction to the required density and dressing complete as per detailed specifications and drawing. 17 Rebate for reutilisation of boulders obtained from M dismantling of drain and rip rap as per required as specification and direction of engineer-in-charge, including transportation with all leads and lifts as specified in the preamble of BOQ. 18 Providing and installing N B 200 ( medium duty) vertical RM G.I.pipes as a continuity to existing relief wells in the existing rock toe. The new pipes shall be welded to the existing vertical G.I.pipe. 19 Rebate for reutilization of following materials obtained from dismantling of toe drain,rock toe,horizontal/inclined drains a) Sand filter. M b) Crushed rock filter. M c) Rock toe. M TOTAL AMOUNT Page No.6 of 6 7 OF 7