Package C-1 CONSTRUCTION OF CIVIL WORKS OF ITHAI BARRAGE AND POWER CHANNEL FOR RENOVATION AND MODERNIZATION OF LOKTAK POWER STATION

Amount

ITHAI BARRAGE

Dewatering During Construction

Dewatering of surface construction sites including supply, installation and removal of pumping equipment from the site

Surface Excavation (for concrete blocks, wire crates, bank protection works, etc.)

Common Excavation

Embankment Construction & Backfill

Providing and laying earthfill obtained from excavation including the cost of all materials, carriages, labour, placing and spreading, compaction and sprinkling with water as needed for the materials, etc. as per drawing and as per technical specifications or as directed by Engineer-in-Charge.(including all leads and lifts)

Backfill

Concrete & Cementitious Mortar

Concrete Works

Reinforced Cement Concrete (M20/A20) including formwork, etc.

Repair & Protection in exposed condition with high performance cementitious repair mortar. [Based on EN 1504-3-R4]

Surface preparation of old concrete by cleaning methods like compressed air/ high pressure water blast/ sand blast, chipping, wire brush or other means for laying of repair mortar as per technical specification including all stages and scaffolding etc. (Complete finished item with all leads and lifts).

Providing and applying high performance cementitious mortar on exposed/ eroded concrete surface as per technical specification. Minimum thickness of the layer shall be kept 12.5mm. (Complete finished item with all leads and lifts). (Repair of Spillway Glacis & Stilling Basin Floor including downstream weir, Piers & Abutments)

Reinforcing Steel

Deformed Reinforcement Bars Grade Fe 500

Slope Protection

Supply of mechanically woven double twisted hexagonal gabions (Zn coated) of size 2mx1mx1m with one diaphragm having mesh opening 100mm x 120 mm, mesh wire diameter 3.0mm, edge/ selvedge wire diameter 3.9mm and lacing wire diameter 2.2mm conforming to IS:16014and as per technical specification.

Supply and placing boulders of around 20 kg to 40 kg in weight and 150 mm to 300 mm in size in mechanically woven double twisted hexagonal wire mesh gabion box including cost of supply of lacing wire / rings for tying, cost of tying the lid of gabions with lacing wire / rings and cost of placing the gabion box at desired locations as per the specification.

Spawls 600mm thick below CC blocks/ gabions in river bed

Sand bags for local repair

Providing and laying CC block (M20/A20) as per drawings and specifications

Laying of geotextile including cost of supply, storage and transportation upto site as per specification

Power channel, Emergency Gate & Zero shaft gate

Surface Excavation

Minor excavation

Concrete

Plain Concrete Ribs (M20A20) for stone pitching

Slope Protection

Stone/ Boulder Pitching

Providing & Laying Shingle (20-50mm thick) below pitching

Providing & Laying Gravel (5-20mm thick) below pitching

Providing and filling the voids of stone pitching with earth (backfill)

ALPHA PACIFIC SYSTEMS PVT. LTD.