Construction of Balance Civil Works Package Lot-II for Underground Power House and Transformer Cavern, Part of HRT-I and HRT-II, Surge Shafts, Pressure Shafts and Adits, TRT and other associated Structures etc of Teesta-VI HE Project, Sikkim

Amount

CURRENCY

CURRENCY

Dewatering During Construction

Dewatering of Surface Construction Sites including supply, installation and removal of pumping equipment from the site

Surface Excavation

Common excavation

Rock excavation

Control perimeter blasting

Line drilling

Dental excavation

Minor excavation

Removal of material arising from overbreak accepted due to geological conditions

Extra for haulage of excavated materials

Extra for hauling excavated materials beyond 3 km and upto 6 km

Rock stabilization and Supports

Rock Anchors 25 mm dia

Length upto 4.0 m

Length more than 4.0 m and upto 6.0 m

Rock Anchors 32 mm dia

Length upto 6.0 m

Length more than 6.0 m and upto 9.0 m

Length more than 9.0 m and upto 12.0 m

Self Drilling Hollow Core Anchor 25 mm dia

Length upto 6.0 m

Extensions for embedding into concrete where required

Mesh reinforcement

Welded wiremesh

Chain link fabric

Post tensioned Rockbolts (Tendons)

Testing of Post Tensioned Rock Bolts

Grouted Anchor bar 25 mm dia.

Length upto 6.0 m

Shotcrete

Plain Shotcrete

Cement variation in shotcrete

Superplasticiser

Embankment Construction and Backfill

Coffer dyke in TRT outlet

Zone 1 material

Zone 2 material

Zone 3A material

Zone 3B material

Riprap

Extra for transport for embankment materials beyond 3km

Backfill

Random backfill

Compacted backfill

Free-drainage backfill

Gravel fill

Sand-gravel fill

Drilling, Grouting and Pressure Relief Holes

Drilling for consolidation grouting

Drilling for grout holes 45 mm dia

Placing grout (excluding cement)

Consolidation grouting

Drilling for Pressure Relief holes

Drilling of 45 mm dia hole

Supply and installation of 36 mm dia perforated PVC pipes

Drilling of exploratory holes, check holes and holes for instrumentation

Drilling of 45 mm dia holes

Drilling of 76 mm dia holes

Drilling of 98 mm dia holes

Extra for core recovery

Grouting materials

Cement

Bentonite

Admixtures

Concrete

Concrete in surface works

Cement concrete M10/A20

Cement concrete M15/A40

Cement concrete M20/A40

Cement concrete M25/A40

Concrete in Blockouts M30/ A20

M25/A20 precast concrete including formwork for cable trenches etc.

Cement variation in concrete

Admixtures for concrete

Air-entraining agent

Superplasticizer

Formwork

Class F1

Class F2

Class F1C

Class F2C

Class F3

Class F3C

Reinforcing Steel

Deformed Reinforcing bars - Grade Fe 500

Plain reinforcing bars

Couplers

32 mm dia

36 mm dia

Waterstops and joints

P.V.C. water stops

Joint fillers

Joint Sealing Compound

Bituminous compound

Joint Sealant (Including primer)

Metalworks

Protective net on top of surge shaft

Stainless steel Railing

GI railing

Ladders

Gratings

Climbing irons

Errection hooks

Miscellaneous steel sections as edge protection, frames, bearing plates, brackets, etc. of various dimensions, including bolts, screws, anchors, and other accessories for interior and exterior purpose.

Installation of Metal works supplied by others contractor

Building and Architectural Works

Building and Architectural works in D.G. building of pothead yard

Miscellaneous and Ancillary Works

Fencing and gates

Fencing

Gates

Weep holes

PVC Pipes

50 mm dia

75 mm dia

100 mm dia

150 mm dia

200 mm dia

Slope protection

Supply of 9 mm 4-strand Polypropylene (PP) Rope Gabions (UV stabilized).

Supply and placing boulders of around 20 kg to 40 kg in weight and 150 mm to 300 mm in size in PP rope gabion box.

Supply of mechanically woven double twisted hexagonal gabions (Zn coated).

Supply and placing boulders of around 20 kg to 40 kg in weight and 150 mm to 300 mm in size in gabion box.

Random Rubble Masonary Wall

Wet R R Masonry

Dry R R Masonry

Rock paving in mortar

Concrete blocks

Wattling Trenches

Mulching / Plantation of Grass / Shrubs

Jute Geo-Textiles

Balli Benching

Bamboo Piling

Monitoring Instruments

Supply, installation and commissioning of monitoring instrument as per tech. spec.

Single point borehole extensometer

Mechanical type

Electrical type

Multi point borehole extensometer

Mechanical type

Electrical type

Optical Targets

Load Cells

Water Supply & Sewerage

Laying of water G.I. Pipe line with complete fittings, fixing valves, testing and commissioning

150 mm nominal dia

100 mm nominal dia

75 mm nominal dia

50 mm nominal dia

25 mm nominal dia

Supply & installation of pumps 3 H.P capacity for water supply including all electric panels, cables, level switches etc

No. of Operational units

No. of Standby units

Design, supply & installation of Water treatment plant including Sodium hypochlorite dosing unit with complete accessories as specified in Technical specification.

Design, supply & installation of FIBR reactor based sewerage tratment plant including pumps and necessary fitting etc.as specified in Technical specification.

Laying of HDPE sewage Pipe line including fittings and fixtures

150 mm nominal dia

100 mm nominal dia

Design, supply & installation of Pumping unit for sewage system

Roadworks

Earth work in excavation by mechanical means (Hydraulic Excavator)/manual means in foundation trenches or drains (not exceeding 1.5m in width or 10 sqm on plan),including dressing of sides and ramming of bottoms, lift upto 1.5m including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50m.All kind of soil.

Extra for lead beyond 50 m upto 1 Km for Item No-21.1

Excavation work by mechanical means (Hydraulic Excavator)/manual means in foundation trenches or drains (not exceeding 1.5m in width or 10 sqm on plan),including dressing of sides and ramming of bottoms, lift upto 1.5m including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50m.: Ordinary Rock/Hard Rock (Blasting Prohibited)

Extra for lead beyond 50 m upto 1 Km for Item No-21.3

Surface Excavation

Common Excavation

Rock Excavation

Providing & making Gabion structure with Mechanically woven Double Twisted Hexagonal shaped wire mesh gabion boxes as per IS 16014:2012,MORTH clause 2500,of required size,Mesh type 10x12(D=100mm with tolerance of + 2%) Zinc coated,Mesh wire dia 3.0mm, mechanically edged /selveged with partitionsat every with partitions at every 1m interval and shall have minimum 10 numbers of openings per meter of mesh perpendicular to twist ,tying with lacing wire of diameter 2.2mm, supplied@3% by weight of Gabion boxes, filled with boulder with least dimensions of 200mm, as per direction of Engineer- in-charge.

Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20 mm nominal size) upto plinth level with Cement mortar 1:6 (1 cement : 6 coarse sand)

Providing and Laying Plum concrete in 1:4:8 c.c.(1cement, 4 coarse sand, 8 clean hard graded stone chips of 40 mm down nominal gauge) with 50% clean hard stone of sizes not exceeding 15 cm including shuttering, compacting and curing complete, as per the direction of Engineer in Charge.

Lined Drain

Preparation and consolidation of sub grade with power road roller of 8 to 12 tonne capacity after excavating earth to an average of 22.5 cm depth, dressing to camber and consolidating with road roller including making good the undulations etc. and re-rolling the sub grade and disposal of surplus earth with lead upto 50 metres.

Dry stone pitching 22.5 cm thick including supply of stones and preparing surface complete.

Supplying and stacking at site

90 mm to 45 mm size stone aggregate

63 mm to 45 mm size stone aggregate

53 mm to 22.4 mm size stone aggregate

Stone screening

Stone screening 13.2 mm nominal size (Type A)

Stone screening 11.2 mm nominal size (Type B)

Laying, spreading and compacting stone aggregate of specified sizes to WBM specifications in uniform thickness, hand picking, rolling with 3 wheeled road/vibratory roller 8-10 tonne capacity in stages to proper grade and camber, applying and brooming requisite type of screening / binding material to fill up interstices of coarse aggregate, watering and compacting to the required density .

Providing and applying tack coat using hot straight run bitumen of grade VG - 10, including heating the bitumen, spraying the bitumen with mechanically operated spray unit fitted on bitumen boiler, cleaning and preparing the existing road surface as per specifications :On W.B.M. @ 0.75 Kg / sqm .

4 cm thick bitumastic sheet with hot bitumen of approved quality, using stone chippings (60% with 12.5 mm nominal size and 40% with 10 mm nominal size) @ 2.60 cum per 100 sqm and coarse sand @ 2.60 cum per 100 sqm of road surface and with bitumen @56 kg/cum of stone chippings and @ 128 kg/cum of sand over a tack coat with hot straight run bitumen, including consolidation with road roller of 8 to 10 tonne etc. complete. (tack coat to be paid separately) : With paving Asphalt grade VG - 10 heated and then mixed with solvent at the rate of 70 grams per kg of asphalt.

Providing and laying seal coat of premixed fine aggregate ( passing 2.36 mm and retained on 180 micron sieve) with bitumen using 128 kg of bitumen of grade VG - 10 bitumen per cum of fine aggregate and 0.60 cum of fine aggregate per 100 sqm of road surface, including rolling and finishing with road roller all complete.

Repair & Maintenance of Internal/access road & other roads

Double Lane (F.W.)

Intermediate Lane (F.W)

Single Lane (F.W.)

Repair & Maintenance of WBM & Bituminous Carpeting ordered by Engineer-in-Charge

Supplying and stacking at site

90 mm to 45 mm size stone aggregate

63 mm to 45 mm size stone aggregate

53 mm to 22.4 mm size stone aggregate

Stone screening

Stone screening 13.2 mm nominal size (Type A)

Stone screening 11.2 mm nominal size (Type B)

Laying, spreading and compacting stone aggregate of specified sizes to WBM specifications in uniform thickness, hand picking, rolling with 3 wheeled road/vibratory roller 8-10 tonne capacity in stages to proper grade and camber, applying and brooming requisite type of screening / binding material to fill up interstices of coarse aggregate, watering and compacting to the required density .

Providing and applying tack coat using hot straight run bitumen of grade VG - 10, including heating the bitumen, spraying the bitumen with mechanically operated spray unit fitted on bitumen boiler, cleaning and preparing the existing road surface as per specifications :On W.B.M. @ 0.75 Kg / sqm .

4 cm thick bitumastic sheet with hot bitumen of approved quality, using stone chippings (60% with 12.5 mm nominal size and 40% with 10 mm nominal size) @ 2.60 cum per 100 sqm and coarse sand @ 2.60 cum per 100 sqm of road surface and with bitumen @56 kg/cum of stone chippings and @ 128 kg/cum of sand over a tack coat with hot straight run bitumen, including consolidation with road roller of 8 to 10 tonne etc. complete. (tack coat to be paid separately) : With paving Asphalt grade VG - 10 heated and then mixed with solvent at the rate of 70 grams per kg of asphalt.

Providing and laying seal coat of premixed fine aggregate ( passing 2.36 mm and retained on 180 micron sieve) with bitumen using 128 kg of bitumen of grade VG - 10 bitumen per cum of fine aggregate and 0.60 cum of fine aggregate per 100 sqm of road surface, including rolling and finishing with road roller all complete.

Providing and laying non-pressure NP2 class (light duty) R.C.C. pipes with collars jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete : 1000 mm dia. R.C.C. Pipe

Description of Work / Item(s)

Amount

CURRENCY

CURRENCY

Dewatering During Construction

Dewatering of Underground Construction sites including supply, installation and removal of pumping equipment from the site

Underground Excavation

Excavation of all Tunnels i.e HRT and its construction Adits, Upstream/Doswnstrean surge galleries & its adits, TRTs , Draft tubes, Bus ducts, Escape tunnel, Access tunnels, Ventilation tunnel, Cable tunnel, drainage gallery & other Adits etc.

Class I, II, & III

Class IV and V

By Multiple drifting due to geological reasons

Excavation of Power house & Transformer caverns, MIV chamber in all classes of rock

Removal of material arising from overbreak accepted due to geological conditions

Common Excavation

Extra for haulage of excavated materials

Beyond 3 km and up to 6 km

Line drilling

Dental excavation

Dismanteling of Exisiting Concrete Structure

Rock stabilization and Supports

Resin grouted rockbolts 25 mm dia

Length up to 4.0 m

Length more than 4.0 m and up to 6.0 m

Resin grouted rockbolts 32 mm dia

Length up to 6.0 m

Length more than 6.0 m and up to 9.0 m

Length more than 9.0 m and up to 12.0 m

Resin grouted rockbolts 36 mm dia

Length up to 6.0 m

Length more than 6.0 m and up to 9.0 m

Length more than 9.0 m and up to 12.0 m

Rockbolt testing

Rockbolts 25 mm dia

Rockbolts 32 mm dia

Rockbolts 36 mm dia

Extension for embedding into concrete where required

Grouted anchor bar

25 mm dia

32 mm dia

Water expandable friction anchor

Length up to 6.0 m

Self Drilling Hollow Core Anchor

25 mm dia

32 mm dia

Self Drilling Fibre Glass rockbolt 25 mm dia

Length up to 6.0 m

Mesh reinforcement

Welded wiremesh

Lattice Girder

Steel ribs, supply and installation (including accessories)

Steel lagging supply and installation

Precast concrete lagging

Pregrouting

Drilling for Pregrouting

45 mm dia holes

57 mm dia holes

Grouting Operations

45 mm dia holes

57 mm dia holes

Fore poling

Fore poling (Drilling & Installation)

Grouting Operations

Pipe Roofing

Pre-drainage holes 45 mm dia

Shotcrete

SFR Shotcrete excluding steel fibre

Plain Shotcrete

Cement variation in shotcrete

Superplasticizer

Steel fibre

Micro silica

Backfill

Gravel fill in Transformer floor

Drilling, Grouting and Pressure Relief Holes

Contact Grouting

Drilling of 45 mm dia holes for contact grouting

In the Tunnels

For tunnel plug

In Surge shaft

In Pressure shaft

Grouting Operations

In the Tunnels

For tunnel plug

In Surge shaft

In Pressure shaft

Drilling of 45 dia holes for Consolidation grouting

In tunnels & tunnel plug

In Surge shaft

In Pressure shaft

In power House, Transformer & MIV Cavern

Redrilling of holes

In the Tunnels (50% of rate in 7.1.1.1)

For tunnel plug (50% of rate in 7.1.1.2)

In Surge shaft (50% of rate in 7.1.1.3)

In Pressure shaft (50% of rate in 7.1.1.4)

Drilling for curtain grouting for tunnel plugs

Grouting operations

Redrilling for Curtain Grouting (50% of rate in 7.3)

45 mm dia pressure relief holes in the tunnels and caverns

Drilling of 45 mm dia hole

Supply and installation of 36 mm dia perforated PVC pipes

Supply and installation of drain outlet devices

Non Return Valves (NRV)

Drilling of exploratory holes, check holes and holes for instrumentation in tunnels and caverns

Drilling of 45 dia holes

Drilling of 76 dia holes

Drilling of 98 dia holes

Extra for core recovery

Water pressure testing - simple water test

Embedded pipes and fittings for grouting left permanently in place

Placing grout (Excluding cement)

Contact grouting ordered by the Engineer-in-Charge

Fill grouting

In Temporary drainage system

In exploratory holes

Consolidation grouting including grouting for tunnel plug

-Single stage grouting

-Multiple stage grouting

Grouting materials

Cement

Bentonite

Admixtures

Microfine cement

Colloidal Silica

Concrete

Plain Cement Concrete lining in Invert including formwork in all tunnels

Plain Cement Concrete lining in Overt including formwork in all tunnels

-M25/A40 in Geological Approved Overbreaks (75% of rate in 9.2.1)

-M20/A40 in Geological Approved Overbreaks (75% of rate in 9.2.3)

Reinforced Cement Concrete in Tunnels

-M25/ A40 in Geological Approved Overbreaks (75% of rate in 9.3.1)

Tunnel plugs - M20/ A40

Concrete in Shafts including formwork

Cement concrete lining M25/A40 in Surge Shaft

-M25/ A40 in Geological Approved Overbreaks (75% of rate in 9.5.1)

Backfill concrete M20/A40 behind steel liner in Pressure shaft

-M20/ A40 in Geological Approved Overbreaks (75% of rate in 9.5.2)

Cement concrete M25/A40 in Draft Tube gate shaft

Concrete in Blockouts M30/ A20

Concrete in Power house, Transformer cavern & MIV chamber

Cement Concrete around spiral casing, Draft tube (first & second stage concrete) etc up to Turbine Floor EL.± 238.25

Cement concrete M30/A20 for Generator barrel in power house (Up to EL 248.34 m)

Cement concrete M30/A20 in beams, columns, slabs, walls, raft etc. of Machine hall, control building, service bay, Transformer hall & MIV Chamber

Cement concrete M15/A40

Lean Concrete M10/A20

M15/A40 backfill concrete behind steel ribs in geologically approved overbreaks in tunnels, shafts & caverns

M25/A20 precast concrete including formwork

Cement variation in concrete

Admixtures for concrete

Air-entraining agent

Superplasticizer

Grouting of equipment foundations/ Bearing plates and anchors

Non Shrink cement based grout

Non Shrink epoxy based grout

High performance concrete excluding silica fume - M70/A20

Silica Fume

Providing and applying high performance cementitious mortar complying with EN 1504-3 (R4)

For closure of grout holes

For structural repair works

Providing and applying integral crystalline slurry conforming to DSR Item code no. 22.23 to the concrete structures like retaining walls, water tank, tunnels, surge shaft, etc.

For vertical surface two coats @0.70 kg per sqm per coat

For horizontal surface one coat @1.10 kg per sqm

Providing and applying crystalline mortar conforming to DSR Item code no. 22.25 for the treatment of construction joints, cracks, tie rod holes and spalled & honeycombed surface of PCC/RCC underground structures like basement, water tanks, surge shafts, tunnels etc. to ensure water tightness.

Epoxy Mortar for repair of concrete

Providing and applying two-components epoxy binder (resin & hardener) conforming to ASTM C881 Type-IV, Class C as per technical specification

Providing and applying well graded quartz sand/filler for use in epoxy mortar as per technical specification

Formwork

Class F1

Class F2

Class F3

Class F1C

Class F2C

Class F3C

Reinforcement Steel

Deformed Reinforcing bars - Grade Fe 500

Plain reinforcing bars

Couplers

32 mm dia

36 mm dia

Waterstops and joints

P.V.C. water stops

Joint fillers

Joint Sealing Compound

Bituminous compound

Joint Sealant (Including primer)

Metalworks

Railing

Steel pipe handrail

Ladders

Gratings

Steel cover, Frames

Climbing irons

Erection hooks

Steel anchorings

Steel pipes

100 mm dia

150 mm dia

200 mm dia

300 mm dia

Cast iron pipes

100 mm dia

150 mm dia

200 mm dia

300 mm dia

500 mm dia

Cable Channels

Miscellaneous steel sectins as edge protection, frames, bearing plates, brackets, etc. of various dimensions, including bolts, screws, anchors and other accessories for interior and exterior purpose.

Installation of metalworks supplied by others

Steel lining in surge shaft orifice

Structural Steel Work

Supply and erection of supporting steel structure

Building and Architectural Works

Building and Architectural works in Power house including Service Bay & Control Block, MIV and Transformer cavern including GIS.

Suspended ceiling in Power House, MIV and Transformer Cavern.

Wall panelling in Power house machine hall (including service bay), Transformer cavern and Main access tunnel towards Power house

Miscellaneous and Ancillary Works

Concrete pipes

Drain pipes on concrete or sand base

100 mm dia

200 mm dia

300 mm dia

Pipes fully embedded in concrete

200 mm dia

300 mm dia

400 mm dia

PVC Pipes

50 mm dia

75 mm dia

100 mm dia

150 mm dia

200 mm dia

300 mm dia

150 mm dia half round pipes

SWG Pipes

100 mm dia

150 mm dia half round pipes

Monitoring Instruments

Supply, installation and commissioning of monitoring instrument as per technical specification.

Load cells

Tape convergence points

Optical targets

Single point borehole extensometer

Mechanical type

Electrical type

Multi point borehole extensometer

Mechanical type

Electrical type

Total pressure cell

Piezometers

Water level measuring gauge

Read out units

Read out units for Electrical load cells

Read out units for other electrical instruments like extensometer, piezometers etc.

Data acquisition system and web based data monitoring

Calibrate, test, survey, maintain and monitoring of already existing instruments as per technical specifications

Load cells

Single point borehole extensometer

Multi point borehole extensometer

Piezometers

3D - TSP (Tunnel Seismic Prediction) Test

Water Supply & Sewerage

Laying of water G.I. Pipe line with complete fittings, fixing valves, testing and commissioning

150 mm nominal dia

100 mm nominal dia

75 mm nominal dia

50 mm nominal dia

25 mm nominal dia

Supply & installation of pumps 3 H.P capacity for water supply including all electric panels, cables, level switches etc

No. of Operational units

No. of Standby units

Design, supply & installation of Water treatment plant including Sodium hypochlorite dosing unit with complete accessories as specified in Technical specification.

Design, supply & installation of FIBR reactor based sewerage tratment plant including pumps and necessary fitting etc.as specified in Technical specification.

Laying of HDPE sewage Pipe line including fittings and fixtures

150 mm nominal dia

100 mm nominal dia

Design, supply & installation of Pumping unit for sewage system

Description of Work / Item(s)

Amount

Group A surface works - Item rate (BoQ1)

Group B underground works - Item rate (BoQ2)

Patel Engineering Limited

Larsen and Toubro Limited

Patel Engineering Limited

Larsen and Toubro Limited

Patel Engineering Limited

Larsen and Toubro Limited

Bidder Name

Patel Engineering Limited

Larsen and Toubro Limited

Gammon Engineers and Contractors Pvt.Ltd