Provision of interleaving circuits for PAPIs and separate circuit for runway guard lights at Mangaluru International Airport. Sh - Laying of cable and associated works

Amount

Supply of 5 KV grade plug and receptacle of type-I class "B" connector suitable for field attachment with 5 KV grade of 16 Sq.mm XLPE/PVC insulated PVC sheathed single core copper conductor airfield cable etc. complete as required. (refer technical specification)

Supplying and laying of following size ISI marked DWC HDPE pipe along with all accessories like socket, bend, couplers etc. conforming to IS 14930, Part II complete with fitting and cutting, jointing etc. in the existing trench, complete as required. - 63mm Dia (63mm OD, 50mm ID Nominal)

Supply of double holed CI isolating transformer housing box suitable for installing runway/taxiway light fittings which is water tight, round type, metal container of outside dia 330mm, height 450mm, made of 10mm thick cast iron moulding all round, except the top surface which is 15 mm thick, cast iron moulding suitable to receive light fitting base plate on the top and having two numbers of clear holes at side surfaces diametrically opposite and with centre of hole at 75mm above bottom to receive one number each of 50mm dia B class GI pipe and check nuts, two numbers of clear holes at side surfaces diametrically opposite and with centre of hole at 175 mm above bottom to receive one number each of 15mm dia B class GI pipe and check nuts as required. The box should have 2nos SS earth bolts M10*30mm tapped inside near the hole (4'' away from the hole centre) for earth connection and having a drain hole at the bottom tapped to receive 15 mm dia B class GI pipe and having clear opening of 220mm at the top surface and 6nos M10 tapped hole etc cpmplete as required (refer technical specifications).

Supply of trippled holed (three holed) CI isolating transformer housing box suitable for installing runway/taxiway light fittings which is water tight, round type, metal container of outside dia 330mm, height 450mm, made of 10mm thick cast iron moulding all round, except the top surface which is 15 mm thick, cast iron moulding suitable to receive light fitting base plate on the top and having three numbers of clear holes at side surfaces two holes diametrically opposite and other hole right angle to its axis and with centre of hole at 75mm above bottom to receive one number each of 50mm dia B class GI pipe and check nuts, three numbers of clear holes at side surfaces two holes diametrically opposite and other hole right angle to its axis and with centre of hole at 175 mm above bottom to receive one number each of 15mm dia B class GI pipe and check nuts as required. The box should have 3 nos SS earth bolts M10*30mm tapped inside near the hole (4'' away from the hole centre) for earth connection and having a drain hole at the bottom tapped to receive 15 mm dia B class GI pipe and having clear opening of 220mm at the top surface and 6nos M10 tapped hole etc complete as required (refer technical specification).

Providing, laying and fixing of 80mm dia ISI marked B class (medium class) G.l. pipe complete with G.l. fittings in the exisitng trench/above the drain etc. complete as required

Making field connections by crimping 6/16.sq.mm plug and receptacle with the existing 6/16 sq.mm single core GLF cable including filling all the gap with water sealent silicon compound, providing and wrapping with HT insulation tape and over which wrapping with PVC tape etc. as required.

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11 kV grade of following size in the existing RCC/ HUME/ METAL pipe as required. Upto 35 sq. mm (Actual size 6 sqmm - AFL Cable)

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11 kV grade of following size in the existing masonry open duct as required. Upto 35 sq. mm (Actual size 6 sqmm - AFL Cable)

Excavation of trenches for cable/pipe laying in all kind of soil with suitable width and depth (35cm width and 80cm in depth) including dressing of sides, lift upto 1.5 m, getting out the excavated soil, refilling available earth after laying of cable/ pipe etc in layers of 20 cm, ramming, watering and disposal of surplus excavated soil as directed, within a lead of 50 metres.

Excavation of trenches for cable/pipe laying in laterite rock by mechanical/manual means with suitable width and depth (minimum 35cm width and 80cm in depth), including dressing of sides, lift upto 1.5 m, getting out the excavated soil, refilling available earth after laying of cable/ pipe etc in layers of 20 cm, ramming, watering and disposal of surplus excavated soil as directed, within a lead of 50 metres.

Providing and laying of 4mm (8 SWG) dia copper wire in the exisitng trench/pipe along the route of existing cable, making all conncections using copper lugs etc complete as required.

Removal of existing cement cocrete interlocking paver blocks of any design from footpath/ central verge, including removal of rubbish etc., stacking of material within 50 metre lead as per direction of Engineer-in-Charge, laying and fixing of removed cement cocrete interlocking paver blocks of any design (after completing the pipe laying work) in required line, level, curvature, colour and pattern over and including supply and laying of upto 50 mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of Engineer-in-charge.

Dismantling of concrete/bituminous road manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level: 1:2:4 (1 Cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size)

Installation of double holed transformer housing boxes with a base concrete of 1:2:4 of size 630 x 630 x 100 mm thick, all round concrete of 1:2:4 around the housing box, 150 mm thick, the top sloped with 1:2:4 cement including providing and fixing of two nos of 300mm long 50mm dia ISI marked B class GI pipe and two numbers of 300mm long 15mm dia ISI marked B class GI pipe on each to the respective existing hole (for cable and earth wire entry) , fixing the above pipes with double check nut (one inside and one outside the box) to the box , providing and fixing 300mm long 15 mm dia. ISI marked "B" class GI pipe for drainage of water including excavation of earth alignments etc. complete as required.

Installation of triple (three) holed transformer housing boxes with a base concrete of 1:2:4 of size 630 x 630 x 100 mm thick all round concrete of 1:2:4, 150 mm thick, the top sloped with 1:2:4 cement including providing and fixing of three nos of 300mm long 50mm dia ISI marked B class GI pipe and three nos of 300mm long 15mm dia ISI marked B class GI pipe one each to the respective exisitng holes,(for cable and earth wire entry), fixing the pipes with double check nuts (one inside and one outside the box) to the box, providing and fixing 300mm long 15 mm dia. ISI marked "B" class GI pipe for drainage of water including excavation of earth, alignments etc. complete as required.

Earthing with ISI marked B class (medium class) G.l. earth pipe of 4.50 meter long, 40 mm dia including all accessories, excavation/drilling the earth for placing earth pipe, providing masonry enclosure with cover plate having locking arrangement/concrete earth chamber with concrete cover (concrete cover to fit inside the concrete chamber), lifting hooks for cover, watering funnel etc. with charcoal/coke and salt etc complete as required. (refere technical specification)

Providing and laying earth connection from earth electrode with 4.00 mm dia copper wire in 15 mm dia ISI marked B class G.I. pipe from earth electrode including connection with copper thimble, excavation and re-filling etc complete as required.

Supplying and making cable route marker with cement concrete 1:2:4 (1 cement :2 coarse sand : 4 graded stone aggregate 20mm nominal size) of size 60 cm x 60 cm at the bottom and 50 cm x 50 cm at the top with a thickness of 10 cm including inscription duly engraved on the marker, fixing the marker in ground at required locations etc complete as required.

Techno Electricals