Construction of Offshore Platform and Approach Structure for Establishment of Lighthouse tower at Rani Lakshmibai Shila in mid sea off east coast of Andaman Island

Amount

PART-I Pre-Engineering survey and Geo technical Investigation, laboratory test

Carrying out Seabed survey (Bathymetry) to establish seabed topography covering an area of 200 x 200 m around the Flat Rock of Invisible Bank with suitable survey lunch, equipment, such as multibeam Echo sounder, Sidescan sonar, Sea bed profiler, etc., and positioning system with sub meter accuracy such as SBAS or code corrected DGPS system, to obtain accurate seabed bathymetry (XYZ data) in WGS 84 reference system, to develop required 3D and 2D Digital Terrain Model (DTM), reduced to chart datum using predicted tides of Port Blair, and submission of seabed survey charts in 2D and 3D (DTM) formats, in required scale for detailed designing, planning and execution of project component, including cost of vessels, equipment, hire, charter, manpower, transportation, tools & plants, machineries, insurance, port charges, taxes, duties & levies other than goods and service tax, labour charges, POL, software & hardware, etc., complete.

Carrying out Geotechnical investigation at the site with exploratory marine bore holes of suitable size, for a depth 15 meter below the sea bed or 10 meter below the hard rock strata, whichever is higher, at suitable locations of approach structure and lighthouse tower foundation, including collection of disturbed and undisturbed samples of seabed material, core logging, in-situ strength tests etc., and conducting necessary laboratory tests to obtain design parameters for planning, designing and execution of work and submission of report, logs, charts, etc., as per International Code / IS Code provision as directed by the Engineer-in-charge, including cost of drilling barges, equipment, hire, charter, manpower, transportation, tools & plants, machineries, insurance, port charges, taxes, duties & levies other than goods and service tax, packing, labelling, transportation, software & hardware, POL, labour charges, etc., complete.

Part II - Evaluation of Detailed Engineering and vetted from govt. Institute

Collection and compilation of Meteorological and Oceanographic data, such as wind, wave, tide, current, etc., required for evaluation of Detailed Engineering and Design of Sub-structure and Superstructure of entire project components required for the work, and Evaluation of Detailed Design based on the approved metaocean data, seabed survey, Geotechnical reports including preparation & submission of Detailed Design report, Engineering Drawings, Good for Construction drawing, etc., as per IS / International Codal provision, and vetted by the reputed Government Institutes (IIT or NIT), including cost of manpower, equipment, tools & plants, machineries, software & hardware, labour charges, vetting charges, etc., complete.

Part - III - Mobilisation, Hiring and Demobilisation of Jackup Barge and Marine Spreads for the work

Mobilization of suitable Jackup Barge, of adequate capacity, as working platform and required marine spreads to the site, including equipment and machineries, of adequate capacity & capability, as per equipment plan, such as Piling Rig, mobile / fixed crane, floating barges, staging, lighting equipment, DG sets, supply vessels, work boats, batching plant, mixers, vibrators, and any other enabling structures required for execution of project, including cost of equipment, hire, running, charter, transportation, tools & plants, machineries, insurance, port charges, taxes, duties & levies other than goods and service tax, labour charges, etc., complete.

Hiring, running and operation of Jackup Barge, of adequate capacity & capability, as working platform at adequate height above high tide level, with valid statutory certificates, Insurances and required marine spreads at the site, including equipment and machineries, of adequate capacity & capability, as per equipment plan, such as piling rig, mobile / fixed crane, floating barges, staging, lighting equipment, DG sets, supply vessels, work boats, batching plant, mixers, vibrators, and any other equipment required for execution of project, including cost of manpower, equipment, hire, running, charter, POL, transportation, tools & plants, machineries, insurance, port charges, taxes, duties & levies other than goods and service tax, labour charges, etc., complete. The details of works are as below, 1. Construction of 1500 and 1200 mm Bored Cast in-Situ RCC Piles (Weightage 50%) 2. Construction of Superstructure of Approach (Weightage 30%) 3. Construction of Lighthouse Tower (Weightage 20%) The Payment will be made on pro-rata basis as per the weightage mentioned above for on completion of respective project component.

Demobilization of Jackup Barge and marine spreads from the site, including equipment and machineries, used for the project, including cost of equipment, hire, running, charter, transportation, tools & plants, machineries, insurance, port charges, taxes, duties & levies other than goods and service tax, labour charges, etc., complete.

Part - IV - Construction of Bored In-situ RCC Piles, Pre-cast and Cast in-situ RCC Platforms of Approach Structure and Lighthouse Tower

Positioning, shifting and setting up of Jack-up Barge, piling plant and suitable equipment, tripods, winch / Pile driving rig, bailers, chiselers, Reverse Circulation Drilling (RCD), floating barges, cranes of adequate capacity, accessories, etc. (as per the methodology of work) at each location for providing of 1500 / 1200 mm. dia. bored cast in-situ RCC piles, including positioning of Vertical structural steel liner for boring work, pile reinforcement cage and concreting the pile, including the cost of fabrication and erection of pile driving plant, staging with various steel plates, girders, angles, channels , steel items, welding charges, strutting and fixing in position at each location , transportation charges of all materials to worksite, all labour charges and minor tools etc. complete.

Fabrication Position and Erection of 8mm thick structural steel cylindrical liner with stiffeners of 8 mm thick at bottom of piles and joints etc for 1500/1200 mm dia Bored cast-in-situ RCC pile, including cost of structural steel plates confirming to IS: 2062, Grade E250, manpower, transporting to the pile location, placing in position, aligning, staging, welding and driving the liner below existing sea bed level, cost of all other materials, transportation charges , all labour charges, hire charges, minor tools, rolling, cutting, welding etc., complete. Note:Payment shall be made upto cutoff level.

Boring / drilling/chiseling and bailing out through all types of soil/rock strata for 1500 /1200 mm. dia vertical pile, from the top of flat rock /existing sea bed level to founding level (hard rock)with the help of jack-up barge and suitable equipment, tripods, winch / Pile driving rig, bailers, chiselers, Reverse Circulation Drilling (RCD), floating barges, cranes of adequate capacity, accessories, etc. (as per the methodology of work) at each location including cost of manpower, POL, all labour charges, minor tools and plant etc. complete. (Note: The sample of bored materials at regular interval shall be collected and produced for verification at no extra cost and in case of any dispute the samples so collected shall be referred to an authorized / registered laboratory by the DGLL or his representative and the decision of such authorized laboratory is final and binding on both the parties, however the cost of testing shall be borne by the contractor).

Light House tower Foundation Platform Pile (1500 dia)

Hard rock

Approach Structure Piles(1200 dia)

Soil/soft strata

Hard rock

Providing and laying design mix concrete of M40 grade for RCC works in accordance with IS 456 (Latest Edition) using coarse aggregate from mainland quarry, mainland river sand /M-sand and 53 grade Ordinary Portland cement confirming to IS 12269, adding silica fume and approved plasticizer as per design mix bored in cast-in-situ RCC piles by using tremie with hopper arrangements, excluding cost of fabrication, fixing of reinforcement , but including cost of cement, stone chips, mainland river sand/Msand, Silica fume & Plasticizer, cost of all labour charges, mixing, conveying, placing, compacting, screening and washing of coarse aggregate and mainland river sand/M-sand, transportation charges of all materials to the Work Site, hire charges and running charges of batching plant, vibrator, consumables and all other equipment, cost of all tools & plants etc. complete. (The design mix shall be provided by the contractor from the approved Govt. laboratory). [Only concrete quantity between founding level and specified Pile cut off level will be measured & paid for. The concrete cast 0.6 m (min) above specified pile cut off level including overflow concrete will not be payable]..

Dressing / chipping of the RCC pile head of 1500/1200 mm dia including cutting of steel liners & trimming of extra concreted pile above the designed cut off level and exposing the reinforcement to receive fresh concrete for beams, bracing, pile caps etc., bending the reinforcement for new works, staging including cost of all equipments, scaffolding, all labour charges, minor tools etc. complete.

Fabrication, Supply and transportation of ribbed tor steel reinforcement with a minimum yield strength of 500N/mm2 and minimum elongation of 16% or equivalent confirming to IS 1786 with corrosion resistant element for Fabrication and fixing of reinforcement cages as per drawing for bored cast-in-situ piles as per approved drawing/as per the direction of Engineer-in-Charge, including cost of fabrication, fixing dowels, shear ties, straightening, cutting, bending, binding, tying, lapping and welding in position, lowering of reinforcement cage in position, wherever necessary with black 18 SWG annealed binding wire, all labour charges, transportation charges of all materials to Work Site, cost of binding wires, all T&P required for the work and minor tools etc. complete.

Providing pre-cast reinforced cement concrete of design mix grade M40 in accordance with IS 456 (Latest Edition) using coarse aggregate from mainland quarry, mainland river sand/M-sand and 53 grade Ordinary portland cement confirming to IS 12269, adding silica fume and approved plasticizer as per design mix in pre-cast beams, pile muff etc. as indicated in the approved drawing and as directed by Engineer-in Charge excluding cost of fabrication, fixing of reinforcement, ,but including cost of cement, stone chips, mainland river sand, silica fumes & plasticizer, cost of centering and steel shuttering, cost of all labour charges, mixing, conveying, placing, compacting, screening and washing of coarse aggregate and mainland river sand, transportation charges of all materials to the Work Site including shifting and positioning of precast members, hire charges and running charges of batching plant, vibrator, consumables and all other equipments, curing, cost of minor tools etc. complete. (The design mix shall be provided by the contractor from the approved Govt. laboratory).

Providing and laying design mix concrete of RCC M40 grade in accordance with IS 456 (Latest Edition) using coarse aggregate from mainland quarry, mainland river sand /M-sand and 53 grade Ordinary portland cement confirming to IS 12269, adding silica fume and approved plasticizer as per design mix in cast-in-situ for beams, slab, Columns, stitching concrete of approach structure, cast-in-situ muff/raft, intermediate landing slabs, roof slab of Light house tower etc. as indicated in the approved drawing and as directed by Engineer-in Charge , excluding cost of fabrication, fixing of reinforcement, but including cost of cement, stone chips, mainland river/M-sand sand, Silica fumes & plasticizer, centering and shuttering, cost of all labour charges, mixing, conveying, placing, consolidation, screening and washing of coarse aggregate and mainland river sand/M-sand, transportation charges of all materials to the Work Site, hire charges and running charges of batching plant, vibrator, consumables and all other equipments, cost of minor tools etc. complete. (The design mix shall be provided by the contractor from the approved Govt. laboratory).

Fabrication, Supply and transportation of steel with a minimum yield strength of 500N/mm2 and minimum elongation of 16% or equivalent confirming to IS 1786 with corrosion resistant element for Fabrication and fixing of reinforcement in cast-in situ and pre-cast concrete for superstructure works of approach and lighthouse tower as per the direction of Engineer-in-Charge, including cost of fabrication, fixing dowels, shear ties, cutting, bending, tying, lapping and welding in position wherever necessary with black 18 SWG annealed binding wire, all labour charges, transportation charges of all materials to Work Site, cost of binding wires, all T&P required for the work and minor tools etc. complete, fixing dowels, shear ties, straightening, cutting, bending, binding, tying, lapping and welding in position, lowering of reinforcement cage in position, wherever necessary with black 18 SWG annealed binding wire, all labour charges, transportation charges of all materials to Work Site, cost of binding wires, all T&P required for the work and minor tools etc. complete.

Providing and laying Plain Cement Concrete 1:1:2 grade for in-situ PCC works in accordance with IS 456 (Latest Edition) using 20mm coarse aggregate from mainland quarry, mainland river sand /M-sand and 53 grade Ordinary Portland cement confirming to IS 12269, in under water concrete works by using tremie with hopper arrangements, including cost of cement, stone chips, mainland river sand/Msand, cost of all labour charges, mixing, conveying, placing, compacting, screening and washing of coarse aggregate and mainland river sand/M-sand, transportation charges of all materials to the Work Site, hire charges and running charges of batching plant, vibrator, consumables and all other equipment, cost of all tools & plants etc. complete.

Providing and laying Plain Cement Concrete 1:1:2 grade for in-situ PCC works in accordance with IS 456 (Latest Edition) using 20mm coarse aggregate from mainland quarry, mainland river sand /M-sand and 53 grade Ordinary Portland cement confirming to IS 12269, in concrete works at Foundation Platform of Lighthouse tower, etc including cost of cement, stone chips, mainland river sand/Msand, cost of centering and steel shuttering, cost of all labour charges, mixing, conveying, placing, compacting, screening and washing of coarse aggregate and mainland river sand/M-sand, transportation charges of all materials to the Work Site, hire charges and running charges of batching plant, vibrator, consumables and all other equipment, cost of all tools & plants etc. complete.

Supplying, Installation and Testing of Cast Iron bollards of 30 T pull capacity confirming to relevant IS specifications with all fixtures such as anchor bolts, nuts and washers, painting including fixing the bollards in position on the proposed structure, fixing the anchor bolts with template arrangements at the required locations at desired level and alignment as directed by Engineer-in Charge, including cost of bollards, anchor bolts, nuts & washers etc, painting with anticorrosive paints (02 coats), cost of transportation charges of bollards and bolts to worksite, Welding charges, testing and certification, all labour charges and minor tools, etc. complete.

Design, Supplying, Testing and fixing of suitable fenders of having Energy absorption capacity of 50 kN-m with Not to exceed reaction of 50 kN as approved by DGLL including cost of fender with all its accessories, fixing charges, all labour charges, transportation charges up to site, testing and certification and all tools etc., complete.

Supply, fabricate, transport, handle and erect in position stainless steel handrails for approach structure and Lighthouse tower using 50mm dia pipes and toe plates using stainless steel conforming to SS316L including profile cutting, assembling, hoisting, fixing in position, welding, inspection and applying a priming coat of approved steel primer and top coat of minimum thickness as specified in the specifications made of approved paint all as per specifications and drawings including cost of all materials, fitting charges, all labour charges, transportation charges and tools etc. complete. The cost shall include all fabrication, transportation of the steel structure assembly in part or as a whole, lifting using floating crafts and cranes, erection and fixing on the concrete structure with appropriate supporting arrangement, base plates and anchor bolts etc. complete.

Providing and fixing up to floor five level precast cement concrete Solid block of cement concrete grade 1:1½:3 (1 Cement: 1½ coarse sand (zone-III): 3 graded stone aggregate 20 mm nominal size) of size 40x20x20cm for lighthouse Tower, including hoisting and setting in position with cement mortar 1:3 (1 cement : 3 coarse sand), including supply of all materials, labours, tools & plants, transportation charges of all materials and cost of required centering, shuttering, scaffolding, curing etc. complete as directed by the engineer

Providing and fixing approved first quality padak wood for frames of Doors & Windows with approved first quality and size of hold fast fixing in Cement concrete 1:3:6 (1 Cement, 3 Coarse river sand, 6 graded Stone aggregate of 20 mm nominal size of approved first quality) as per standard drawing at all heights including cost of all materials, labours, transportation charges of all materials to worksite, tools and plants and all other charges etc., complete.

Providing and fixing approved first quality padak wood shutters of 50 mm thick for Lighthouse tower main entrance door with providing & fixing all required approved first quality Brass fittings/fixtures as per standard drawing etc., Supply of all materials, labours, tools and plants, transportation charges and all other charges etc., complete.

Providing and fixing approved first quality padak wood paneled Glazed shutters of 50mm thick for Windows at all heights and directed with providing & fixing all required approved first quality Aluminum fittings/fixtures and Brass Screws as per standard drawing including cost of all materials, labours, tools and plants, transportation and all other charges etc., complete. Lighthouse tower 35 mm thick fully glazed window shutter.

Supplying and fixing G.I ladder with hand railing as per drawing with all fittings and fixtures Of approved first quality at all heights including painting two coats of Synthetic enamel paint over a coat of Zinc Chromate primer of approved quality and colour ( Both Paint & primer same brand ) etc., including cutting walls, floor slab as required. Supply of all labours, materials, tools & plants, transportation charges and all other charges etc., complete.

20mm thick Plastering to the exposed concrete surfaces of RCC platform and to the walls of Lighthouse tower at all heights with cement mortar 1 : 3 ( 1 Cement, 3 Coarse river sand of approved first quality) in one layer including making rough the smooth surface etc., including of all projections inside and outside of lighthouse Tower ,etc., at all heights including cost of supply of all materials, labours, tools and plants, Scaffolding, Curing, transportation charges and all other charges etc., complete.

Supplying and fixing in position of aluminum Trap door of size (700 mm x 850 mm) with all fittings and fixtures of approved first quality as per drawing including grouting the frame in service room top slab R.C.C M40 grade concrete and painting two coats with synthetic enamel paint over a coat of Zinc Chromate Primer of approved first quality and colour (Both Paint & primer same brand) as directed. Supply of all labours, materials, required fittings, tools & plants, transportation charges and all other charges etc., complete.

Providing and laying matt finished Vitrified tiles in floor of size 600 mm X 600 mm (thickness to be specified by the manufacturer) with water absorption less than 0.08% and conforming to IS: 15622, of approved brand & manufacturer, in all colours and shade, laid on 20 mm thick cement mortar 1:4 (1 cement: 4 coarse sand) jointing with grey cement slurry @3.3 kg/sqm including grouting the joints with white cement and matching pigments etc. The tiles must be cut with the zero chipping diamond cutter only. Laying of tiles will be done with the notch trowel, plier, wedge, clips of required thickness, leveling system and rubber mallet for placing the tiles gently and easily. Including cost of all materials, labours, transportation charges of all materials to worksite, tools and plants and all other charges etc., complete.

Painting on interior & exterior surfaces of Lighthouse tower and Doors & windows at all heights with three Coats of approved Marine Grade Paint over a coat of suitable primer of approved first quality and colour ( Both Paint & primer same brand ) to give an even shade including applying for smooth finishing etc, cleaning the surface of all dirt, dust and foreign matters, sand papering, etc., Supply of all labours, materials, scaffoldings, Jhula/ Rope, Bosum chair etc ,tools and plants, transportation charges and all other charges etc., complete.