IMPROVEMENT OF RING MAIN DISTRIBUTION NET WORK 11 KV UNITS IN TECHNICAL AND RESIDENTIAL AREA AT NSTL VISAKHAPATNAM

Amount

Disconnecting / removing the existing 4 pole structure of any height, PCC foundation, insulators, lightning arresters, earth strip connections, Gang operated air break switches, cross arms, channels, bracings, clamps, flats and anti climbing devices including taking down of 11 KV cable (of different sizes) alongwith end terminations carefully and connecting the same to the respective incoming / outgoing RMUs units (5/4/3 modules) alongwith necessary fixing materials complete all as specified and directed.

Disconnecting / removing the existing 2 pole structure of any height, PCC foundation, insulators, lightning arresters, earth strip connections, Gang operated air break switches, cross arms, channels, bracings, clamps, flats and anti climbing devices including taking down of 11 KV cable (of different sizes) alongwith end terminations carefully and connecting the same to the respective incoming / outgoing RMUs units (5/4/3 modules) alongwith necessary fixing materials complete all as specified and directed. Notes for Sl item Nos. 1.00 and 2.00:- (i) Cost of miscellaneous items required for satisfactory completion of job are deemed to be included in the unit rate quoted. (ii) Cost of excavation, earth work including removing of stone aggregate from the site for removal of cable are deemed to be included in the unit rate.

Supply, install, testing and commissioning of 11 KV Outdoor type 04 way RMU extensible IP54 floor mounted with internal copper bus bars, consisting of Load break switch-02 Nos as incomer and fixed type Motorised Vacuum Circuit Breakers-02 Nos as outgoing along with air insulated metering module. All live parts, bus bars of RMU should be enclosed in tank to avoid multiple inter connections & sealed for life robotically for three sides and one side manual welded non magnetic / non ferrite / stainless steel tank Grade 304 of minimum 2 mm thick having IP 67 degree of protection filled with SF6 gas to fulfill the requirement as per IEC 60376 & 60376 B (technical grade of SF6 gas) as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation. RMU should be complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications ON/OFF, Manometer as per IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. The unit shall include the following with all necessary standard fitting required at site. RMU should be tested for an internal arc fault of 21kA for 1 sec. for tank holding the HV components / cable box and paint shade and thickness should be as per AIS 632 IS -5. complete all as specified and as directed. Make: ABB / CROMPTON GREAVES / SIEMENS / SCHNEIDER

SL. ITEM NO. 3.00 CONTD... 630A Load Break Switch module for making of fault current Earth Swicth of full making capacity-2 Nos as incoming Short time withstand current - 21KA/ 3 sec Making Capacity - 52.5KA Auxiliary contacts - 1NO + 1NC Power frequency withstand voltage - 38KV Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X Cable covers - 3X Snap action mechanism for manual operation Cable box for front termination of the cable suitable 11 KV XLPE cable Right angle boots (push on type) Suitable Cable bushings for front only cable terminations Arc proof cable covers of the filling pressure 0.14mpa (absolute pressure at 20degree C with self Interlocking mechanism with earth switch Notes:- (i) Make of various accessories to be used in RMU shall be recommended by OEM. (ii) The complete enclosure with all accessories and breakers shall be of OEM only and no channel partner panel fabrication is permitted.

SL. ITEM NO. 3.00 CONTD... 630A VCB module for making & breaking of fault current alongwith Earth Swicth of full making capacity as Outgoing-2 Nos. Vacuum circuit breaker shall be having spring charged stored mechanism suitable for manual / motorized operation-24V DC. Opening & Closing coils - 24VDC. Three position disconnector / earthing switch down stream vacuum circuit-breaker. Three position single spring mechanism for disconnector / earthing switch. “Live Cable” LED Indicators through Capacitor Voltage Dividers mounted on the bushings. Short time breaking current - 21KA/ 3 sec. Making Capacity - 52.5KA. Auxiliary contacts - 6NO + 6NC. Power frequency withstand voltage - 38KV. Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X. Cable covers - 3X. Green (ON)/Red (OFF) push buttons to operate the VCB. Feeder protection relay with IEC 61850 protocol REF 615 RMU tank shall be tested for an internal arc fault of 21KA for 1 sec, No of electrical operating cycles shall be 2000 cycles and short circuit cycles shall be 50. Resin cast ring core protection CT on cables 100-50/1 A, 5P10, 2.5 VA - 3 Nos. Resin cast ring core Metering CT on cables 100/1 A, Cl-1.0, 2.5 VA - 3 Nos. Mechanical ON/OFF/EARTH/Spring charge Indication. Cable boxes should be Arc Proof interlocked with respective Earthing Switches.

SL. ITEM NO. 3.00 CONTD... Bus Connected Air Insulated Metering Module consisting of following:- Three Phase PTs - 11kV/V3/110/V3, Cl-1.0, 50VA-1 No. Space Heater with thermostat, Terminal Blocks, 4 x Digital Multi Function Meter, Cl-1.0, 50VA including inbuilt battery along with battery charger and maintenance free batteries of capacity not less than 24 AH to give backup up to 05 hours with 5 open/close operations. Auxiliary relays for OTI, WTI, Bucholz - Alarm & Trip for 2 Nos. outgoing VCB module 4 x Lockout relays (86) / Transformer digital card for all VCBs, Dummy module for accomodating the necessary Auxiliaries, if required.

Supply,install, testing and commissioning of 11 KV Outdoor type 05 way RMU extensible IP54 floor mounted with internal copper bus bars, consisting of Load break switch-02 Nos as incomer and fixed type Motorised Vacuum Circuit Breakers-03 Nos as outgoing along with air insulated metering module. All live parts, bus bars of RMU should be enclosed in tank to avoid multiple inter connections & sealed for life robotically for three sides and one side manual welded non magnetic / non ferrite / stainless steel tank Grade 304 of minimum 2 mm thick having IP 67 degree of protection filled with SF6 gas to ful fill the requirement as per IEC 60376 & 60376 B (technical grade of SF6 gas) as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation. RMU should be complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications ON/OFF, Manometer as per IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120.The unit shall include the following with all necessary standard fitting required at site. RMU should be tested for an internal arc fault of 21 kA for 1 sec. for tank holding the HV components/cable box and thickness should be as per AIS 632 IS -5. complete all as specified and directed. Make: ABB / CROMPTON GREAVES / SIEMENS / SCHNEIDER

SL. ITEM NO. 4.00 CONTD... 630A Load Break Switch module for making of fault current Earth Swicth of full making capacity-2 Nos as in coming Short time withstand current - 21KA/ 3 sec Making Capacity - 52.5KA Auxiliary contacts - 1NO + 1NC Power frequency withstand voltage - 38KV Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X Cable covers - 3X Snap action mechanism for manual operation Cable box for front termination of the cable suitable 11 KV XLPE cable Right angle boots (push on type) Suitable Cable bushings for front only cable terminations Arc proof cable covers with self Interlocking mechanism with earth switch

SL. ITEM NO. 4.00 CONTD... 630A VCB module for making & breaking of fault current alongwith Earth Swicth of full making capacity as Outgoing-3 Nos. Vacuum circuit breaker having spring charged stored mechanism suitable for manual / motorized operation-24V DC. Opening & Closing coils - 24VDC. Three position disconnector / earthing switch down stream vacuum circuit-breaker. Three position single spring mechanism for disconnector / earthing switch. “Live Cable” LED Indicators through Capacitor Voltage Dividers mounted on the bushings. Short time breaking current - 21KA/ 3 sec .Making Capacity - 52.5KA. Auxiliary contacts - 6NO + 6NC. Power frequency withstand voltage - 38KV. Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X. Cable covers - 3X. Green (ON) / Red (OFF) push buttons to operate the VCB.Feeder protection relay with IEC 61850 protocol REF 615 RMU tank shall be tested for an internal arc fault of 21KA for 1 sec No of electrical operating cycles shall be 2000 cycles and short circuit cycles shall be 50. Resin cast ring core protection CT on cables 100-50/1, 5P10, 2.5 VA - 3 Nos. Resin cast ring core Metering CT on cables 100/1 A, Cl-1.0, 2.5 VA - 3 Nos. Mechanical ON/OFF/EARTH/Spring charge Indication. Cable boxes should be Arc Proof interlocked with respective Earthing Switches.

SL. ITEM NO. 4.00 CONTD... Bus Connected Air Insulated Metering Module consisting of following:- Three Phase PTs - 11kV/V3/110/V3, Cl-1.0, 50VA-1 No. Space Heater with thermostat, Terminal Blocks, 4 x Digital Multi Function Meter, Cl-1.0, 50VA including inbuilt battery along with battery charger and maintenance free batteries of capacity not less than 24 AH to give backup up to 05 hours with 5 open/close operations. Auxiliary relays for OTI, WTI, Bucholz -Alarm & Trip for 2 Nos. outgoing VCB module 4 x Lockout relays (86) / Transformer digital card for all VCBs, Dummy module for accomodating the necessary Auxiliaries, if required.

Supply, install, testing and commissioning of 11 KV Outdoor type 05 way RMU extensible IP54 floor mounted with internal copper bus bars, consisting of Load break switch-01 No as incomer and fixed type Motorised Vacuum Circuit Breakers-04 Nos. as outgoing along with air insulated metering module. All live parts, bus bars of RMU should be enclosed in tank to avoid multiple inter connections & sealed for life robotically for three sides and one side manual welded non magnetic / non ferrite / stainless steel tank Grade 304 of minimum 2 mm thick having IP67 degree of protection filled SF6 gas to fulfill the requirement as per IEC 60376 & 60376 B (technical grade of SF6 gas) as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation. RMU should be complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications ON/OFF, Manometer as per IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. Bushings bolted type as per OEM design. The unit shall include the following with all necessary standard fitting required at site. RMU should be tested for an internal arc fault of 21kA for 1 sec. for tank holding the HV components / cable box and paint shade and thickness should be as per AIS 632 IS -5. complete all as specified and directed. Make: ABB / CROMPTON GREAVES / SIEMENS / SCHNEIDER

SL. ITEM NO. 5.00 CONTD... 630A Load Break Switch module for making of fault current Earth Swicth of full making capacity-1 Nos as in coming Short time withstand current - 21KA/ 3 sec Making Capacity - 52.5KA Auxiliary contacts - 1NO + 1NC Power frequency withstand voltage - 38KV Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X Cable covers - 3X Snap action mechanism for manual operation Cable box for front termination of the cable suitable 11 KV XLPE cable Right angle boots (push on type) Suitable Cable bushings for front only cable terminations Arc proof cable covers with self Interlocking mechanism with earth switch

SL. ITEM NO. 5.00 CONTD... 630A VCB module for making & breaking of fault current alongwith Earth Swicth of full making capacity as Outgoing-4 Nos. Vacuum circuit breaker having spring charged stored mechanism suitable for manual/motorized operation-24VDC. Opening & Closing coils - 24VDC. Three position disconnector/earthing switch downstream vacuum circuit-breaker. Three position single spring mechanism for disconnector/earthing switch. “Live Cable” LED Indicators through Capacitor Voltage Dividers mounted on the bushings. Short time breaking current - 21KA/ 3 sec .Making Capacity - 52.5KA. Auxiliary contacts - 6NO + 6NC. Power frequency withstand voltage - 38KV. Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X. Cable covers - 3X. Green (ON) / Red (OFF) push buttons to operate the VCB. 3O/C + 1E/F self powered numerical protection relay as per IEC 61850 REF 615 with Low and High set for Over current and Earth Fault. RMU tank shall be tested for an internal arc fault of 21KA for 1 sec .No of electrical operating cycles shall be 2000 cycles and short circuit cycles shall be 50. Resin cast ring core protection CT on cables 100-50/1 , 5P10, 2.5 VA - 3 Nos. Resin cast ring core Metering CT on cables 100/1 A, Cl-1.0, 2.5 VA - 3 Nos. Mechanical ON/OFF/EARTH/Spring charge Indication. Cable boxes should be Arc Proof interlocked with respective Earthing Switches.

SL. ITEM NO. 5.00 CONTD... Bus Connected Air Insulated Metering Module consisting of following:- three Phase PTs - 11kV/V3/110/V3 ,Cl-1.0 ,50VA-1 No. Space Heater with thermostat, Terminal Blocks, 4 x Digital Multi Function Meter, Cl-1.0, 50VA including inbuilt battery along with battery charger and maintenance free batteries of capacity not less than 24 AH to give backup up to 05 hours with 5 open / close operations. Auxiliary relays for OTI,WTI,Bucholz -Alarm & Trip for 2 Nos. outgoing VCB module 4 x Lockout relays (86) / Transformer digital card for all VCBs, Dummy module for accomodating the necessary Auxiliaries, if required.

Supply, install, testing and commissioning of 11 KV Outdoor type 03 way RMU extensible IP54 floor mounted with internal copper bus bars, consisting of Load break switch-02 Nos as incomer and fixed type Motorised Vacuum Circuit Breakers-01 No. as outgoing along with air insulated metering module. All live parts, bus bars of RMU should be enclosed in tank to avoid multiple inter connections & sealed for life robotically for three sides and one side manual welded non magnetic/non ferrite /stainless steel tank Grade 304 of minimum 2 mm thick having IP67 degree of protection filled with SF6 gas to fulfill the requirement as per IEC 60376 & 60376 B (technical grade of SF6 gas) as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation. RMU should complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications ON/OFF, Manometer as per IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120.The unit shall include the following with all necessary standard fitting required at site. RMU should be tested for an internal arc fault of 21kA for 1 sec. for tank holding the HV components/cable box and paint shade and thickness should be as per AIS 632 IS -5. complete all as specified and directed. Make: ABB / CROMPTON GREAVES / SIEMENS / SCHNEIDER

SL. ITEM NO. 6.00 CONTD... 630A Load Break Switch module for making of fault current Earth Swicth of full making capacity-2 Nos as in coming Short time withstand current - 21KA/ 3 sec Making Capacity - 52.5KA Auxiliary contacts - 1NO + 1NC Power frequency withstand voltage - 38KV Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X Cable covers - 3X Snap action mechanism for manual operation Cable box for front termination of the cable suitable 11 KV XLPE cable Right angle boots (push on type) Suitable Cable bushings for front only cable terminations Arc proof cable covers with self Interlocking mechanism with earth switch

SL. ITEM NO. 6.00 CONTD... 630A VCB module for making & breaking of fault current alongwith Earth Swicth of full making capacity as Outgoing-1 No. Vacuum circuit breaker shall be having spring charged stored mechanism suitable for manual/motorized operation-24VDC. Opening & Closing coils - 24VDC. Three position disconnector/earthing switch downstream vacuum circuit-breaker. Three position single spring mechanism for disconnector/earthing switch. “Live Cable” LED Indicators through Capacitor Voltage Dividers mounted on the bushings. Short time breaking current - 21KA/ 3 sec .Making Capacity - 52.5KA. Auxiliary contacts - 6NO + 6NC. Power frequency withstand voltage - 38KV. Impulse withstand voltage - 95KV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X. Cable covers - 3X. Green (ON) / Red (OFF) push buttons to operate the VCB. 3O/C + 1E/F self powered numerical protection relay as per IEC 61850 REF 615 with Low and High set for Over current and Earth Fault. RMU tank shall be tested for an internal arc fault of 21KA for 1 secNo of electrical operating cycles shall be 2000 cycles and short circuit cycles shall be 50 Resin cast ring core protection CT on cables 100-50/1 , 5P10, 2.5 VA - 3 Nos. Resin cast ring core Metering CT on cables 100/1 A, Cl-1.0, 2.5 VA - 3 Nos. Mechanical ON/OFF/EARTH/Spring charge Indication. Cable boxes should be Arc Proof interlocked with respective Earthing Switches.

SL. ITEM NO. 6.00 CONTD... Bus Connected Air Insulated Metering Module consisting of following:- three Phase PTs - 11kV/V3/110/V3 ,Cl-1.0 ,50VA-1 no. Space Heater with thermostat, Terminal Blocks, 4 x Digital Multi Function Meter ,Cl-1.0,50VA including inbuilt battery along with battery charger and maintenance free batteries of capacity not less than 24 AH to give backup up to 05 hours with 5 open/close operations. Auxiliary relays for OTI,WTI,Bucholz -Alarm & Trip for 2 Nos. outgoing VCB module 4 x Lockout relays (86) / Transformer digital card for all VCBs, Dummy module for accomodating the necessary Auxiliaries , if required. Notes for Sl item Nos. 03 to 06:- (i) Make of various accessories to be used in RMU shall be recommended by OEM. (ii) The complete enclosure with all accessories and breakers shall be of OEM only and no channel partner panel fabrication is permitted. (iii) Pre-Inspection test of RMUs and VCBs shall be conducted at the factory premises in the presence of the Representative nominated by the Accepting Officer. (iv) The auxiliary supply required (230V AC PT) shall be an integral feature in the RMU

Supply, lay, test and commissioning of 11 KV XLPE HT UG cable of size 3 core 120 sq.mm , Insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 11000 Volts grade (earthed) ISI marked, IS: 7098 Part-II, triple extruded and with dry nitrogen curing with stranded aluminium conductor complete all as specified and directed.

Cable route indicator made out of PCC (1:2:4) type B1 of size length - 20cm, width/thickness - 20cm and Height - 100cm for HT cable 0.5 m depth grouted in the ground with suitable PCC work with writing MES HT cable size / joint complete all as directed including necessary earthwork, PCC 1:3:6 type C1 bed block etc, complete all as specified and directed.

Cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sq.mm complete all as specified and directed.

Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sq.mm to 185 sq.mm complete all as specified and directed.

Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240 sq.mm to 300 sq.mm complete all as specified and directed.

Earthing complete with GI earth plate electrode 600mm x 600mm x 6.0mm thick buried directly in ground vertically to a depth of not less than 2.25m deep below ground level with the top edge of earth plate at a depth of not less than 1.5m below ground level connected to GI earth strip of size 25mm x 4mm by means of bolts, nuts, washers of galvanised iron or steel, GI earth strip shall be protected by 40mm bore GI pipe 'medium grade', watering pipe 20mm bore GI pipe 'light grade', GI wire meshed funnel, alternate layer of charcoal and salt on all side to earth plate upto a thickness of 150mm, filling of black cotton soil in earth pit upto GL, and connected to earth plate including necessary excavation & earthwork, PCC (1:3:6) type C-1 earth chamber having internal size 30cm x 30cm x 30cm and outer size 60cm x 60cm x 60cm with 50mm thick RCC cover (1:2:4) type B1 mix with 8mm dia nominal reinforcement @ 100mm c/c both ways etc complete all as shown in electrical plate No. 3 of SSR Part - I (2009) connected to earthing test point, including testing on completion, complete all as speciified and as directed. Notes:- (i) Rate quoted shall deemed to include cost of excavation in any type of strata, RFR and removal upto 50metre, PCC pit, funnel and RCC cover plate. (ii) Earth continuity conductor beyond 7.5m length, GI protection pipe as applicable shall be measured and paid separately under respective item of this Schedule.

Excavation in trenches in hard/dense soil not exceeding 1.5m wide and not exceeding 1.5 m in depth for laying of cable and not exceeding 10 Sqm on plan for poles, struts, stays etc., and not exceeding 1.5 m in depth and getting out complete all as specified and directed.

Excavation in trenches in soft/disintigrated rock not exceeding 1.5m wide and not exceeding 1.5 m in depth for laying of cable and not exceeding 10 Sqm on plan for poles, struts, stays etc., and not exceeding 1.5 m in depth and getting out complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers n.exc. 25 cm in hard / dense soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers n.exc. 25 cm in soft/disintigrated rock soil complete all as specified and directed.

Removing excavated material to a distance n.exc 50m and depositing where directed at a level n.exc 1.5 m above the starting point in soil complete all as specified and directed.

Un-reinforced precast concrete cable covers, class HV, type 1, flat, size 300mm x 180mm x 40mm complete for cable protection complete all as specified and directed.

Supply and spread duly riddled earth soil obtained from Sl item No. 13 above in trenches for cable cushioning, all as specified and as directed. Note :- Prior to laying / spreading the Riddled earth should be tested as per IS 1255 and the testing parameters should be submitted to the dept by the contractor and the cost deemed to be included in the rate quoted by him..

Galvanised iron tubing 80mm bore, light grade with all fittings laid in trenches / wall / floor / pole for protection of cable including fixing clamps, bolts and nuts of suitable size complete all as specified and directed.

Galvanised iron tubing 50mm bore, medium grade with all fittings laid in trenches / wall / floor / pole for protection of cable including fixing clamps, bolts and nuts of suitable size complete all as specified and directed.

Cutting the existing road of 6.00 m length x 0.25 m width x 0.90 m depth for laying of HT XLPE cable through the GI pipe 80mm dia light grade as mechanical protection to HT Cable including excavation in any type of soil, returning, filling in, removal and PCC (1:2:4) type B1, 15 cm below the ground level for making the the road cut portion good all as specified and directed. Notes :- (i) GI pipe light grade 80mm bore shall be measured under the respective item of this schedule. (ii) Rate quoted is deemed to be include the rate for necessary PCC work and making good the disturbed surface to match the existing finish.

Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled red & white with words "DANGER 11 KV" written in English, Hindi & local language, compulsory figures and conventional skull and bones in signal red colour and fixed with MS clamps bolts and nuts of approved size for HT of size 25x20 cm complete all as specified and directed.

GI strip 25 mm x 4 mm burried in ground for making grid and used as extension of earthing lead beyond to 7.5 m from earth plate to test point (up to 7.5 m shall be measured against the earthing) and all air tight joint by welding or bolting by at lest three bolt with washers complete all as speified and directed.

Plain cement concrete (1:2:4), type B1 (using 20mm graded stone aggregate) as in coping including necessary form work, exposed surfaces of concrete shall be finished even and smooth without using extra cement complete all as specified and directed.

Plain cement concrete (1:3:6), type C2 (using 40mm graded stone aggregate) as in foundations complete all as specified and directed.

Galvanised iron tubing 40mm bore, light grade with all fittings laid in trenches / wall / floor / pole for protection of GI earth strip complete all as specified and directed.

GAGANSRI INFRA

B DURGA REDDY INFRASTRUCTURES PRIVATE LIMITED

N K BUILDERS

VTC ENGINEERING P LIMITED

CHAVA CONSTRUCTIONS AND ELECTRICAL PROJECTS

Venkateswara Electricals

M P TYAGI ENGINEERS AND CONTRACTORS

Rajan Traders

M/s Prem Associates

SUPREET CONSTRUCTIONS

Sai Ram Builders

Mavee Syndicate

CIVILEC ENGINEERING WORKS

Prasur Electricals & Engineering Co.

Velox Engineering Solutions Pvt Ltd

KB PROJECTS

RASAM ENGINEERING COMPANY