Construction of fully underground cavern at Khab, Distt.- Kinnaur, Himachal Pradesh (Package No.C-645)

Amount

Survey and surface investigation

Topographical Survey for contour map at 2-5 m interval

Surface excavation at portals

Common Excavation

Rock Excavation

Underground Excavation

Excavation of Access Tunnel and Cavern-Very good, Good, Fair rock

Rock Stabilization & Supports

Rock Anchors 25 mm dia in surface work including accessories and testing of anchors -upto 2.5 m long

Rock Bolt 25 mm dia in Underground including accessories and testing of anchors - -upto 2.5 m in adit and 3 m in cavern

Wiremesh-Welded wiremesh

Steel ribs, supply & installation (including accessories)

Steel lagging: Supply & Installation

Precast concrete lagging (M25/A20)

Shotcrete

Plain Shotcrete -At portals

Plain Shotcrete -In Access Tunnels & Cavern

Extra for providing and mixing of Waterproofing material in shotcrete

Cement Variation

Backfill

Filling fine sand below invert concrete

Gravel filling around perforated PVC pipe

Drilling & Grouting for consolidation

Drilling of 45 mm dia. holes for consolidation grouting

Grouting operation for consolidation grouting

Cement for grouting

Concrete

Concrete lining including formwork in Tunnel & Cavern- M25A20 PCC in invert lining in access tunnel & Cavern

Concrete lining including formwork in Tunnel & Cavern- M25A20 Reinforced concrete in cavern in overt lining in access tunnel and cavern

M30 A40 Reinforced concrete in Portals

M15A40 Backfill Concrete access tunnel and Cavern

Extra for providing & mixing of Waterproofing material in concrete work

Cement Variation

Reinforcing Steel

Deformed Reinforcing bars Grade Fe 500

WATER PROOFING

Drainage board 500 gsm with 8 mm Dimple with prefixed Geotextile 100 gsm

Providing, laying & fixing of waterproofing Geo-Membrane PVC-P Type 2.0 mm thick

Providing, laying & fixing of protection sheet- Geo Textile 500 gsm

Providing, laying & fixing of protection sheet- PVC- 2 mm thick

Perforated PVC 75 mm Dia. Pipes

MISCELLANEOUS

Providing and fixing 2 mm thick M. S. sheet door with frame of 75 x 75 x 6 mm angle iron and 3 mm M. S. gusset plates at the junctions and corners, all necessary fittings complete, including applying a priming coat of approved steel primer. Using M. S. angels 75 x 75 x 6 mm for diagonal braces. With complete fittings and fixtures.

ELECTRICAL ITEMS

Flame proof Led Light Surface mounted/wall mounted 2x20 watt

Installation, testing & commissioning of lighting fixtures Fully enclosed

Underground Point wiring for Lighting fixtures with 2x2.5 mm copper cable + 1x2.5 cu earth wire & steel conduit

Supplying and fixing 12 way, single pole and neutral, sheet steel, MCB distribution board, double door 240 V, on surface/ recess, complete with tinned copper bus bar, neutral bus bar, earth bar, din bar, interconnections, powder painted including earthing etc. as required. (But without CB/RCCB/Isolator)

Supplying & fixing of ELCB in the existing MCB DB complete with connections, testing and commissioning etc. as required.

Supplying and fixing 5 A to 32 A rating, 240/415 V, 10 kVA, "C" curve, miniature circuit breaker suitable for inductive load of 2 poles in the existing MCB DB complete with connections, testing and commissioning etc. as required.

Supplying & Fixing of 2P surge protection/ Lightning device in the existing MCB DB complete with connections, testing and commissioning etc. as required.

Earthing with copper earth plate 600 mm X 600 mm X 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal/ coke and salt as required.

Providing and fixing 25 mm X 5 mm copper strip on surface or in recess for connections etc. as required.

Single stage axial fan and motor with suitable capacity to deliver at least 20 cum/sec maintaining minimum 200 mm static pressure for supply of air

Supply installation balancing and commissioning of GSS sheet metal rectangular/ round ducting complete with neoprene rubber gasket, elbows, splitter dampers, vanes, hangers, supports etc. with suitable cross sectional area graded with reducing size to maintain uniform pressure as per approved drawings and specifications of suitable sheet thickness (not less than 1.25 mm sheet) for seperate supply for eturn line to complete the system as required

MCC Panel suitable for axial fans & Motors with all necessary protection arrangements

Power Cables and Control Cables of suitable rating for ventillation system

Installation, erection and commissioning of complete ventillation system

H K S Construction

ALPHA PACIFIC SYSTEMS PVT. LTD.