Lot SSL-6- Construction of Balance Civil works of Power House Complex from HRT Intake Structures to Tail Race Channel, Subansiri Lower HE Project, Assam and Arunachal Pradesh

Amount

CURRENCY

CURRENCY

Dewatering During Construction

Dewatering of Surface Construction Sites including supply, installation and removal of pumping equipment from the Site(Fixed Rate Item)

Surface Excavation

HRT Intake and Power House

Common Excavation

Rock Excavation by chieseling or mechanised means

Dental excavation

Minor excavation work

Line drilling

Removal of material arising from accepted geological overbreak / slides

Extra for hauling excavated materials beyond 6 km upto 8 km

Extra for hauling excavated materials beyond 8 km

The inspection, monitoring and care of existing rock slopes and maintenance of drains instruments already installed.

Rock supports

Rock anchors

25 mm dia.

- Length 3.0 m

- Length 6.0 m

Extensions for embedding into concrete, where required

32 mm dia.

- Length 6.0 m

- Length 8.0 m

- Length 12.0 m

Extensions for embedding into concrete, where required

Testing & monitoring of rock reinforcing elements

Grouted anchor bar (for concrete) - 25 mm dia

Mesh reinforcement

- Chain link fabric

- Wire mesh

Shotcrete

Shotcrete in surface excavations

Cement variation in shotcrete (Fixed Rate Item)

Backfill

Random backfill/fill

Compacted backfill/fill

Sand-gravel backfill/fill of trenches

Free Draining backfill/fill

Drilling, Grouting and Pressure Relief Holes

Drilling for consolidation grouting in power house plinth

- Drilling of grout holes 45 mm dia.

Drilling of drainage holes from open

- Drilling of 76 mm dia. pressure relief holes

- Supply and installation of 50 mm dia PVC slotted 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

- Extra-over for drilling with triple tube core barrels

Water pressure testing - Simple water test

Embedded pipes and fittings for grouting left permanently in place

Placing grout (including cement)

Fill grouting

- Temporary drainage system

- Exploratory holes

Consolidation grouting

- Single stage

- Multiple stage

Grouting materials

- Bentonite

- Admixtures

Concrete

Concrete in Power house and other surface works

M25/A20 around Turbine parts, beam, column, concreting in high reinforcement density zones in Powerhouse, precast roof slab of powerhouse

M25/A40 in Substructure, Beams, Columns, Slabs & Turbine parts, HRT intake, Tail race channel etc. and backfill concrete, Cladding in Powerhouse slope

M20/A40 in Apron in Tailrace area and backfill concrete & Intake Cladding works

M15/A40 in Mass concrete, lean concrete, concrete in footings, backfill concrete & concrete blocks

Repair of old Concrete done by previous contractor

M20/A20 in levelling concrete in powerhouse roof

Treatment of construction joints of concreting done by previous contractor

Grouting of equipment bearing plates and anchors

Cement variation in concrete (Fixed Rate Item)

Admixtures

- Air-entraining agent

- HRWRA or Superplasticizers

Formwork

Class F1

Class F2

Class F3

Class F1C

Class F2C

Class F3C

Reinforcing Steel

Deformed reinforcing bars

Plain Reinforcing bars

Couplers

Couplers 32mm dia

Couplers 36mm dia

Waterstops and joints

- PVC water stops

- Joint filler

- Joint sealing compound (asphalt seal)

- Bituminous coating

- Rubber joint strip

Metalworks

Handrails and Railings

Galvanised Steel Pipe

Stainless Steel Pipe

Ladders/Steel Stairs/Climbing Irons

Gratings/Hatch covers

Water tight steel cover and frame

Erection hooks

Steel anchorings

Stainless Steel Pipe

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.

- 1000 mm dia.

Cable channels

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

Structural steel work

Supply & erection of steel roof truss

Erection of already fabricated steel roof truss including purlins and bracings

Supply and erection of rocker bearing for Power House roof truss

Building and Architectural Works

Architectural design along with construction of associated architectural works in power house complex (machine hall, auxiliary bay and service bay etc).

Masonry work

Stone masonry

Brick masonry

Concrete blocks

Plastering

Interior wall plastering 12/15 mm

Ceiling plastering 6 mm

Exterior Wall Plastering 25 mm

Flooring and Floor Finishes

Cement Concrete Flooring

Granolithic Concrete Flooring

Epoxy Flooring

Kota Stone Flooring

Acid Proof Tile Flooring

Ceramic Vitrified Tiles

Glazed Tiles on Floor & Walls

Pre- Policed Granite Tiles

Damp Proofing of Walls and Floors

Water Proofing on Roofs

Suspended Ceiling

Moulded aluminium ceiling

Mineral board ceiling

Miscellaneous and Ancillary Works

Fencing and gates

Fencing

Gates (3m x3m)

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

-200 mm dia

-300 mm dia

SWG pipes

-100 mm dia

-150mm dia half round pipes

Weep holes

Concrete cable channels

Septic Tank including pneumatic pump

Straightening, cleaning of existing exposed reinforcement work from the partially done reinforcement with binding wire, chairs, spacers etc. complete in all respects.

Chipping of concrete in gate groves for 2nd stage concreting for embedment parts.

Restoration of the existing service lines such as water pipe lines, power cables as is where is basis in the existing works.

Slope protection works

Wire crates / Polyprelene Gabions

- Wire crates

- Boulder filling in wire crates

Polyproplene rope Gabions

Size 1m x 1m x 1m (In-situ)

Size 2m x 2m x 1.5m (In-situ)

Size 2m x 2m x 1.5m (assembling, prefilling and placement at specified location)

Random rubble masonry

Rock paving in mortar

Rock pitching with profile wall

Concrete blocks

Monitoring Instruments

Water Level Measuring Gauge

-Mechanical Type

-Automatic Type (Electronic)

Seepage measuring system (mechinical type)

Data acquisition system and web based data monitoring service including sensor networking systems

Supply & Installation of Inclinometer & probe

Supply & Installation of 3 point MPBX

Supply & Installation of 100 T load cell

Supply & Installation of 25 T load cell

Supply & Installation of pore pressure meter

Supply & Installation of Topographical markers

Water Supply and Sewerage

Development works for tapping water source

Pipe work - Laying of water Pipe line

-150 mm nomimal dia

-100 mm nomimal dia

-75 mm nomimal dia

-50 mm nomimal dia

-25 mm nomimal dia

Supply & installation of pump & filter for water supply

Supply and installation of water treament plant

Supply and installation of sewage treament plant

Pipe work - Laying of sewage pipe lines

-100 mm nomimal dia

-150 mm nomimal dia

Road Works

Common excavation

Rock excavation

Construction of subgrade

Random ruble masonry

M15/A40- Lean concrete

Wirecrates and Boulder filling

- Wirecrates

- Boulder filling in wirecrates

Maintenance of Access roads

Concrete M20/A40

Deformed reinforcing bar

Rock anchors, 25 mm dia upto 6 m

Shotcrete

Removal of slided material/debries

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 (Fixed Rate Item)

UNDERGROUND EXCAVATION

Excavation of HRT, Surge tunnels and Adits etc

- Class I, II, IIIA, IIIB

- Class IV, V

- Excavation by multidrifting due to geological reasons

- Removal of undercuts/ humps including above benching line from already excavated portion of heading excavation by others which was left by previous contractors works.

Excavation of Pressure Shaft & Surge Shafts

Excavation in Horizontal portion of Pressure Shaft in all classes of rock

Excavation in Vertical portion of Pressure Shaft & Surge Shafts

Excavation by Slashing

Dental Excavation

Line drilling

Removal of material arising from accepted geological overbreak

Extra for hauling excavated materials beyond 5 km upto 8 km

Extra for hauling excavated materials beyond 8 km

Inspection and monitoring of rock surface and maintenance of drains and instrumentation in tunnels, shafts and adits and care thereof.

Restoration of the existing service lines such as ventilation duct pipes, air/water pipe lines, power cables on as is where is basis in the existing works.

ROCK STABILISATION AND SUPPORTS

Rock Anchors

25 mm dia.

- Length up to 6 m

Extensions for embedding into concrete,where required

32 mm dia.

- Length 3.0 m

- Length above 3.0 m up to 5.0m

- Length above 5.0 m up to 6.0m

- Length above 6.0 m up to 9.0m

Extensions for embedding into concrete,where required

36 mm dia.

- Length up to 9.0 m

Extensions for embedding into concrete,where required

Post-Tensioned Rock Bolts(Tendons)

600 KN upto 20m long post tensioned rock bolts ( Tendons)

Number of heads

Test rock bolts ( Tendons)

Grouted anchor bars 25 mm dia.

- Length up to 6.0 m

Miscellaneous steel profiles used in conjuction with rock support installation

Testing of rock reinforcing elements

Welded wire mesh

Steel ribs,supply and installation

Steel lagging supply and installation including all accessories

Repair/Re-erection of disoriented ribs at appropriate position

Precast concrete lagging

Drilling for Pre grouting

- 45mm dia

Grouting operations for Pre grouting

Fore poling including grouting operations

Pipe Roofing including grouting operations

SHOTCRETE

Shotcrete

Steel fibre reinforced shotcrete (SFRS)

Cement variation in shotcrete (Fixed Rate Item)

Micro Silica/Silica fume

Steel Fibres

DRILLING, GROUTING AND PRESSURE RELIEF HOLES

Drilling for contact grouting

- In tunnels and plugs

- In shafts

Grouting Operations for contact grouting

- In tunnels and plugs

- In shafts

Drilling of 45 mm dia. holes for consolidation grouting

- In Tunnels and plugs

- In Shafts and adits

Grouting Operations for consolidation grouting

- Single stage grouting

- Multi stage grouting

Drilling of 45 mm dia holes for curtain grouting in tunnel plugs

- Drilling for curtain grouting

Grouting Operations for curtain grouting

- Multi stage grouting

Drilling of drainage holes in the tunnels

- Drilling of 50 mm dia Holes

- Drilling of 45 mm dia. holes

- Supply & installation of PVC pipe 36 mm dia.

- Supply and installation of drain outlet devices

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

- Drilling of 45 mm dia. holes

- Drilling of 76 mm dia. holes

- Extra for core recovery

Water pressure testing -Simple water test

Embedded steel pipes and fittings for grouting left permanently in place

Cement for Contact grouting ordered by the Engineer-in-Charge

Fill grouting

- In temporary drainage system

- In exploratory holes

Grouting materials

- Cement

- Bentonite

- Admixtures

Microfine/ Ultrafine cement

Chemicals (polyurethane or other resin based)

CONCRETE

Concrete lining (PCC/RCC) including formwork in all Hydraulic Tunnels (HRT & Surge Tunnels), Shafts and Adits

M25/A20 in overt of hydraulic tunnel

M25/A20 in overbreak of previous contractor works and geologically approved overbreak

M25/A40 in invert of hydraulic tunnel

M25/A40 around pressure shaft steel liner

M20/A40 in invert of Adit tunnel

High performance Concrete (PCC/RCC) in Tunnels/shaft

M60/A20 in overt of hydraulic tunnel

M60/A20 in invert of hydraulic tunnel

M60/A20 in vertical shaft

Miscellaneous Concrete Work

M15 / A40 backfill concrete in underground excavations in geologically approved overbreaks including formworks and at non specified place

M20/A40 Concrete in plug in adits of HRTs and Pressure Shafts

Repair of old concrete, removal of shutters and cutting of left out reinforcement in the existing structure and finishing the same.

Treatment of constrcution joints of previous contractors works

Admixtures

- Air-entraining agent

- HRWRA or Superplasticizers

- Silica Fumes

Cement variaton in concrete (Fixed Rate Item)

Reinforcing Steel

Deformed reinforcing bars

Couplers

- 32 mm dia.

- 36 mm dia.

MONITORING INSTRUMENTS

Supply , installation and commisioning of monitoring instruments

Load Cells

Measuring Tape

Tape convergence points

Tape convergence points including optical techniques

Single point borehole extensometer

Multiple point borehole extensometer

Read Out Units

Cables

CLEAN UP WORKS

Washing and Cleaning of Invert of Water Conductor system before initial filling

Description of Work / Item(s)

Amount

Group A surface works - Item rate (BoQ1)

Group B underground works - Item rate (BoQ2)

Larsen and Toubro Limited

Patel Engineering Limited

Larsen and Toubro Limited

Bidder Name

Patel Engineering Limited

Larsen and Toubro Limited