PROVN OF RING MAIN SYSTEM FOR ELECTRICITY IN TECH AND DOMESTIC AREA AT AFS BORJHAR

Excavating in trenches n exc 1.5m wide and n exc 1.5m deep and getting out in soft / loose soil complete all as specified and directed

Returning, filling in soft/loose soil, including, spreading, levelling, watering and well ramming in layers not exc. 25 cm complete all as specified and directed.

Removing excavated materials (soils) to a distance not exc 50.00 mtr and depositing where directed at a level not exc 1.50 mtr above the starting point , complete all as specified and as directed.

Supply and laying factory made un-reinforced precast concrete cable cover, class HVP, type 1 with peak, size 300mm x 180mm x 40mm complete all as specified and directed.

Fixing only chain link fencing including line wires, any mesh, size and type to any type of standards, rails, straining bolts, etc. including provission of binding wire complete all as specified. NOTE: Round bar shall be measured and paid seperately under respective items.

S&F mild steel works such as Framed work as in doors or gates of angle or other section with gusset plates, rails,braces, etc., complete, drilled for fixing of steel sheeting or other covering. Doors, etc. to be prepared for hanging or sliding with and including either hooks and hinges or steel hanging door fittings conforming to Fe 410-W(Gde-E-250) quality b (exclusive of steel sheeting or other covering, running rails and guides) and hanging; also fastening and fixing complete all as specified and directed by Engineer-in-Charge.

Supply, jointing & testing cable jointing kit for 11KV (Earthed) grade cable, out door end termination cold shrinkable type joint with jointing material and accessories suitable for 120 Sqmm to 185 Sqmm 3 Core, XLPE armoured aluminium conductor cable complete all as specified and directed.

Supply, jointing & testing cable jointing kit for 11KV (Earthed) grade cable, indoor end termination cold shrinkable type joint with jointing material and accessories suitable for 50 Sqmm to 95 Sqmm 3 Core, XLPE armoured aluminium conductor cable complete all as specified and directed.

M&L for PCC (1:2:4), type B-1 (using 20 mm graded crushed stone aggregate) for copping of pole, as in benching including whitering slightly chamferred angles and finished exposed surfaced even and smooth including necessary form work, etc complete as specified and directed.

M&L for boring under road, pavement, hard standing, runway lines by trenchless technology using latest boring technique and necessary machine for insertion of GI pipe of 100 mm and 80 mm bore complete all as as directed.

M&L for plain cement concrete (1:3:6), Type C2, using 40 mm graded crushed stone aggregate, in foundations, filling and mass concrete etc complete all as specified and directed by Engr-in -Charge.

Design,Manufacturing,Supply, Installation,Testing and Commissioning of 4way 12kV rated Ring Main Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 02 nos load break switches as incomers & 2 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC for shunt trip arrangement and Motor and other auxiliary circuit operation, HT Copper Bus bar as per detailed description as follows: Location:- Officers mess turning. RMU Construction: The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the "sealed pressure system" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): "a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only .

HT system : 3 phase -3 wire , HT Fault level 21 kA, Power System earthing - solindly earthed at up stream source, HT Copper Bus with Short Time Curent rating 21 kA for 3Sec, Continuous current rating at least 630 A. Enclosure of RMU must be IAC rated for 21 kA for 1 Sec. HT Circuit Breaker : i) There shall be 2nos.load break switches as incomings and 2 nos 12 kV rated VCB as outgoing ( total 4 nos.) . The circuit breakers shall be horizontal isolation - horinzontal draw out type. All of the switchgear shall be capable of withstanding this current without any damage being caused, in accordance with the recommendations IEC 62271-1 and IEC 62271-200.Loss of service continuity class: LSC2A. ii) The Circuit Breaker must be rated for 12 kV ( nominal Voltage), 28 kV/75 kVp , 3 Phase, 50 Hz, Short Circuit Fault Level of 21 kA for 3 secs. Iii) No. Of Close Coils - 02 no. operable at 24 V DC/230V AC , No. of Trip Coils - 02 nos. , operabale at 24 V DC /230V DC for shunt trip Feature for series trip shall also be enabled. iv) Provision for supervision of the two indepandent Trip Circuits for the two Trip Coils to be provided. v)Switchgear classification: PM class vi) Loss of service continuity class: LSC2A vii) Duty Cycle : O – 0.3sec – CO – 3min – CO, Vacuum Circuit breaker shall be of M2, E2, C2 duty and capable for minimum 10000 short circuit breaking operation at full short circuit level. viii) STC rating 21 kA for 1 Sec (for Vacuum Interrupter). ix)Vacuum Interruptor must be hermetically sealed and must comply IEC 60056 ( along with latest amendments). x)Circuit Breaker to be equipped with Suitable tripping arrangement with push button, Mechanical counter to assess the total number of operations of the breaker, Mechanical ON / OFF indicator, Auxiliary switches, Auxiliary Contacts( at least 2 NO + 2 NC of Class 2 category), Emergency trip push button.

xi) The Operating mechanism shall be spring charged motor operated type with Spring Charge Universal motor operable on 24 V DC / 230 V AC. xii) Voltage Presence Indicator shall be provided against each HT circuit ( against each VCB) on line side for knowing the presence of line enerzisation status. HT CT /PT :- (Seperate cubical for metering) i) One set of 03 nos. ( for 3 phases) dual core Cast Resin CTs for Each VCB complying with IEC:60185 & IS 2705 ( along with latest amendments) , Core -1 - 200-100/1 A , 15 VA, Cl 0.5 for metering ; Core-2 -

Each JOB

Design,Manufacturing,Supply, Installation,Testing and Commissioning of 5 way 12kV rated Ring Main Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 02 nos load break switches as incomers & 3 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC

for shunt trip arrangement and Motor and other auxiliary circuit operation, HT Copper Bus bar as per detailed description as follows: Location:- Base Ops. RMU Construction: The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the "sealed pressure system" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): "a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only .

HT system : 3 phase -3 wire , HT Fault level 21 kA, Power System earthing - solindly earthed at up stream source, HT Copper Bus with Short Time Curent rating 21 kA for 3Sec, Continuous current rating at least 630 A. Enclosure of RMU must be IAC rated for 21 kA for 1 Sec. HT Circuit Breaker : i) There shall be 2 nos.load break switches as incomings and 3 nos 12 kV rated VCB as outgoing ( total 5 nos.) . The circuit breakers shall be horizontal isolation - horinzontal draw out type. All of the switchgear shall be capable of withstanding this current without any damage being caused, in accordance with the recommendations IEC 62271-1 and IEC 62271-200.Loss of service continuity class: LSC2A.

ii) The Circuit Breaker must be rated for 12 kV ( nominal Voltage), 28 kV/75 kVp , 3 Phase, 50 Hz, Short Circuit Fault Level of 21 kA for 3 secs. Iii) No. Of Close Coils - 02 no. operable at 24 V DC / 230 V AC , No. of Trip Coils - 02 nos. , operabale at 24 V DC / 230V AC for shunt trip Feature for series trip shall also be enabled. iv) Provision for supervision of the two indepandent Trip Circuits for the two Trip Coils to be provided. v)Switchgear classification: PM class vi) Loss of service continuity class: LSC2A vii) Duty Cycle : O – 0.3sec – CO – 3min – CO, Vacuum Circuit breaker shall be of M2, E2, C2 duty and capable for minimum 10000 short circuit breaking operation at full short circuit level. viii) STC rating 21 kA for 1 Sec (for Vacuum Interrupter). ix)Vacuum Interruptor must be hermetically sealed and must comply IEC 60056 ( along with latest amendments). x)Circuit Breaker to be equipped with Suitable tripping arrangement with push button, Mechanical counter to assess the total number of operations of the breaker, Mechanical ON / OFF indicator, Auxiliary switches, Auxiliary Contacts( at least 2 NO + 2 NC of Class 2 category), Emergency trip push button. xi) The Operating mechanism shall be spring charged motor operated type with Spring Charge Universal motor operable on 24 V DC / 230 V AC. xii) Voltage Presence Indicator shall be provided against each HT circuit ( against each VCB) on line side for knowing the presence of line enerzisation status.

Design,Manufacturing,Supply, Installation,Testing and Commissioning of 5 way 12kV rated Ring Main Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 02 nos load break switches as incomers & 3 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC

HT CT /PT :- (Seperate cubical for metering) i) One set of 03 nos. ( for 3 phases) dual core Cast Resin CTs for Each VCB complying with IEC:60185 & IS 2705 ( along with latest amendments) , Core -1 - 200-100/1 A , 15 VA, Cl 0.5 for metering ; Core-2 - 200-100/1 A, 15 VA , 5P10 for Protection. ii) 01 no. of 03 phase Dual Core PT for HT bus ( 11 kV) with protection HRC fuse Core 11kV /√3 / 110V/√3, Cl 0.5, 100VA Core 2- 11kV-/√3 / 110V/3√3 Cl 3P, 100VA. Multifunction Meter:- 3) 2 Nos. 3 phase Digital Multifunction Meter with Voltage, Amps, kWh, kW, P.F., Active, reactive, apparent energy , disturbance direction detection, Individual harmonic up to the 63rd harmonic. at least 256 samples/cycle with ethernet Port with inbuilt webserver and complying to IEC 61557-12, IEC 62053-22 certified by third party laboratory.for each VCB panel ( 96 mm x 96 mm) , Flush mounted, Class 0.2s conforming to IEC 62053-22 ( along with latest amendments) . Protection Relay:- i) 2 Nos. of Numerical Type IDMT Relay (50/51, 50N/5IN) with two element

HT system : 3 phase -3 wire , HT Fault level 21 kA, Power System earthing - solindly earthed at up stream source, HT Copper Bus with Short Time Curent rating 21 kA for 3Sec, Continuous current rating at least 630 A. Enclosure of RMU must be IAC rated for 21 kA for 1 Sec. HT Circuit Breaker : i) There shall be 2 nos.load break switches as incomings and 3 nos 12 kV rated VCB as outgoing ( total 5 nos.) . The circuit breakers shall be horizontal isolation - horinzontal draw out type. All of the switchgear shall be capable of withstanding this current without any damage being caused, in accordance with the recommendations IEC 62271-1 and IEC 62271-200.Loss of service continuity class: LSC2A.

Design,Manufacturing,Supply, Installation,Testing and Commissioning of 5 way 12kV rated Ring Main Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 02 nos load break switches as incomers & 3 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC

for shunt trip arrangement and Motor and other auxiliary circuit operation, HT Copper Bus bar as per detailed description as follows: Location:- Base Ops. RMU Construction: The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the "sealed pressure system" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): "a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only .

HT system : 3 phase -3 wire , HT Fault level 21 kA, Power System earthing - solindly earthed at up stream source, HT Copper Bus with Short Time Curent rating 21 kA for 3Sec, Continuous current rating at least 630 A. Enclosure of RMU must be IAC rated for 21 kA for 1 Sec. HT Circuit Breaker : i) There shall be 2 nos.load break switches as incomings and 3 nos 12 kV rated VCB as outgoing ( total 5 nos.) . The circuit breakers shall be horizontal isolation - horinzontal draw out type. All of the switchgear shall be capable of withstanding this current without any damage being caused, in accordance with the recommendations IEC 62271-1 and IEC 62271-200.Loss of service continuity class: LSC2A.

M&L for preparation of newly plastered surfaces of walls and applying two coats of cement based paint over a coat of primer etc complete all as specified and as directed.

RMU Bushing & Cable termination:- It is preferable to have all bushings accessible from the front of the RMU. Bushings along the sides or the rear of the RMU are not acceptable. For each cable compartment, the bushing shall be at the same height in order to facilitate a possible reversal of the cables The bushing should be conveniently located for working with cables specified and allow for the termination of these cables: -630 A M16 bolted connectors for switch-disconnectors and vacuum circuit breakers functions.The profiles of the cable connection bushings shall be in compliance with IEC-60137 standard. Cable clamps:A cable clamp arrangement must be provided for all network cables terminated on the RMU. Provision for Cable Entry: There shall be suitable provsion for Cable entry from bottom through 3 mm thick CRCA steel thick detachable gland plate along with provision for termination of 2 runs of 3 c X 300 Sq mm 11 kV (E ) , XLPE insulated Aluminium Cables ( for HT side) and at LT side runs of cables matching with outgoing MCCB current rating. Note:-i) Suitable foundation work is included in the quoted rate as per manufacturer's recommendation. ii) Configuration and schematics arrangement of panel shall be got approved from GE before fabrication. iii) Any other parts/ items not specified above but have been required essential for smooth and safe functioning of panel system shall be quoted rate. iv) The VCB/RMU will be tested as site as primerary injector system and relay will not be set as per load requirement. v) Panel should have heating element with thermostat to avoid moisture condensation in the panel. vi) After installation of RMU at site,the pre-commisioning test shall be carried out by SEI/EI. vii) Pre-dispatch inspection at OEM factory premises shall be carried out Rep of Accepting officer.The rate shall be deemed to be included in the quoted rate

M&L for preparation of new or previously untreated steel surfaces of any description, exc 10 cm width or girth, not otherwise described and applying two coats of Synthetic enamel paint over a coat of red oxide primer etc complete all as specified and as directed

M&L for mild steel round bar upto & including 8 mm dia cut to length bent to shape required including bending, hookings as in chain link fencing fixed with bent to shape required including bending, hookings as in chain link fencing fixed with nut &bolt or securing with clips quality conforming to Fe-410-W (Gde-E-250) etc complete all as specified and as directed.

Design,Manufacturing,Supply, Installation,Testing and Commissioning of 3 way 12kV rated Ring Main Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 01 nos load break switches as incomers & 2 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC for shunt trip arrangement and Motor and other auxiliary circuit operation, HT Copper Bus bar as per detailed description as follows: Location:- Near Main Guard Room & Technical. RMU Construction: The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the "sealed pressure system" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): "a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall

confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only .

iii) Each VCB must have separate Anti Pumping Relay. Earthing :- The cables shall be earthed by an earthing switch with short-circuit making capacity, in compliance with IEC 62271-102 standard. The earthing switch can only be operated when the switch is open. The switch and earthing switch operating mechanism shall have a mechanical endurance of at least 10000 operations. Separate line side Earth switches shall be provided in each HT Circuit ( against each VCB).

Design,Manufacturing,Supply, Installation,Testing and Commissioning of 4 way 12kV rated Ring Main Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 01 nos load break switches as incomers & 3 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC for shunt trip arrangement and Motor and other auxiliary circuit operation, HT Copper Bus bar as per detailed description as follows: Location:- Near Main Guard Room, MT Area & Technical. RMU Construction: The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the "sealed pressure system" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): "a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only .

Supply and spreading dry sand of approved quality for cushioning of UG cable laid in trenches 8 cm deep before laying the cable and 15 cm thick after laying & streching the cable complete all as specified and directed. (NOTE : For the purpose of Payment, Punned thickness of Sand Cushioning only shall be Measured and Paid for).

M&L for dismantling of old ACSR conductors of any sizes or tyoes ect complete, setting aside for taking credit and replacement with new conductor complete all as specified and directed.

Supply, laying, jointing and testing of electric power cable, heavy duty 11KV (E) grade, XLPE insulated, screened, bedded, galvanised steel strip or wire armoured with aluminium conductor of cross sectional area of 150 sqmm, 3 core, laid in trenches/cable duct complete all as specified and directed. (NOTE : Earth work, cable cover and sand cushioning shall be Measured and Paid separately under respective items).

Dismantling old unserviceable bending/ broken RCC/steel tubular pole of any size with necessary disconnection of electric wire, demolition of concrete foundation including excavation and earth work as required and removing the same from site complete all as specified and directed.

Supply, laying, jointing and testing of electric power cable, heavy duty 11KV (E) grade, XLPE insulated, screened, bedded, galvanised steel strip or wire armoured with aluminium conductor of cross sectional area of 95 sqmm, 3 core, laid in trenches/cable duct complete all as specified and directed. (NOTE : Earth work, cable cover and sand cushioning shall be Measured and Paid separately under respective items).

S&F danger notice plate of 1.6 mm thick mild steel sheet, vitreous enameled white with letter, figures and conventional skull & bones in signal red colour & fixed with MS clamps, bolts, nuts of size 25 x 20cm for HT 11KV complete all as specified and directed.

Excavation in post holes not exceeding 0.5 cum, getting out in soft / loose soil , returning, filling in and ramming earth and broken hard core/rubble mixed with earth with around the layers not exceeding 25 cm each layers watering and removing surplus soil to a distance not exceeding 50 m and making good to disturbed surface etc complete all as specified and as directed by Engineer in Charge.

M&L for cable route indicator made out of Plain cement concrete (1:2:4), type B1, of size 15 cm x 15cm x 15 cm, with one end of angle iron of size 25mm x 25 mm x 4 mm duly embedded in cement concrete and the other end of angle iron duly welded with chequered ms plate of 120 mm dia engraved with "MES HT Cable", angle iron of approx lenght 45 cm, complete all as specified and all as directed for HT Cable route indicator.

M&L for 75 mm thick PCC(1:4:8), type D-2 , ( using 40 mm graded stone aggregates) as in sub base of floor , finishing the cement concrete surfaces even etc complete all as specified and directed by Engineer-in-Charge.

Per Qtl

Per RM

M&L for Coloured chequred cement concrete tiles of size not less than 300 X 300 X 20-25 mm thick of approved design set jointed and pointed in neat cement slurry with grey cement and pigment in floors etc complete all as specified as directed.

M&L for brick work with sub- class 'B' bricks, straight or curved on plan exc 6m mean radious , built in CM(1:6) etc complete all as specified and as directed.

M&L for Copper strip 20 x 3.15mm buried in ground complete all as specified and directed by Engr-in-charge.