REPAIR AND MAINT OF HT SWITCH GEAR, VCBs, TRANSFORMER, AB SWITCHES, 2/4 POLE STRUCTURE, HT CABLES AT BARRACKPORE CANTT UNDER GE BARRACKPORE

Supply and fix in repairs 11 KV HT VCB operating mechanism with motor operated spring charged system assembly including coil assembly with 24 Volts DC auxiliary supply system works satisfactorily and testing complete all as specified and directed

Supply and fix in repairs manual charging of closing spring and emergency hand trip assembly and testing complete all as specified and directed

Supply and fix in repairs HT bus bar with insulators as suitable for existing rating current in three phase with proper moisture proof with nuts, bolts and washer and suitable lugs with proper crimping and adequate clearance between the bus bar and earth and any fabrication as required as per site conditions by the contractor at its own cost

Supply and fixing in repairs of 11 KV HT CTs( Primary and secondary) as per existing suitable ratio, whether wound ring or bar type with complete settings with relay, short circuit instrument, earth volt rating fault instrument ,metering equipment with transformer ratio adjustment with burden,accuracy and Overhauling of primary injection by artificial load through CT's & secondry injection of over current earth fault relays/release on each multiple setting readjustment and testing comlete all as specified and directed

Supply and fix in repairs of 11 KV PT's both ( Primary and secondary) and apply multi grease for mechnical parts, inspecting HT bushing male and female and apply dry graphite conductive sealant for contacts,replaced damaged insulators and testing, and assembling, allienemts of components and testing complete all as specified and directed.

Supply and fixin repairs of 11 KV HT contact assembly such as auxillary contactor(2 No+2NC) with burnt coil and all accessories and checking of electrical wiring system,and testing complete all as specified and directed.

Supply and fix in repairs phase indication 'RYB' neon lamps with all connected accessories and including LED lamp <110 volt at inside of the VCB with electrical wiring system and testing complete all as specified and directed.

Supply and fix in repairs tripping shaft assembly with coil and including springs,strips and connected accessories for functional requirement with electrical wiring system and testing complete all as specified and directed.

Supply and fix in repairs closing shaft assembly with coil and including springs, close strips and connected accessories for functional requirement with electrical wiring system and testing complete all as specified and directed.

Supply and fix in repairs vaccum interrupter bottles assembly suitable for 11 KV, 800 amps, 50Hz, single phase including connected accessories for functional requirement and checking of electrical wiring system and testing complete all as specified and directed.

Supply and fix in repairs of 110 volt DC operated numerical relay 2 o/c + E/F and connected accessories for functional requirement of 11 KV VCBs including checking of electrical wiring system and testing complete all as specified and directed.

Disconnected of 6.6KV electric supply from existing 2/4 pole structure and maintenance and servicing/ overhauling of existing indoor type, horizontal draw out type VCB, of rupturing capacity 250/350 MVA, current rating of 630-800 Amps by disconnected HT cable termination joints, checking and cleaning all the spare parts of 6.6 KV VCB to avoid any chance of flashing, loose connection sparking, any burning parts and to replace all nuts,bolts and washers, if found any damaged due to flashing,short circuit, moisture descaling(cleaning of joints/busbars),earth fault etc with new one anodiesed of existing size,testing and calibration of earth fault and over load relays complete after re-connection of all dismantled cables and again testing after re-charging the VCB and testing complete with satisfactorily of Engr-in-charge and the necessary spares i e as per original equipment manufactures as per site requirement and materials as under:- (Location BGTC :- BGTC old & MAP BGTC Power House 6.6 KV sub stn ) Make:- Yamuna & CG

All as per item No.14 here-in-before but 11 KV VCB 630 amps complete all as specified and directed:- (Location:- Nursing Mess and Power House No 2, RCTC, 11 KV Sub Stn)

All as per item No.14.00 here-in-before above but VCB 800 amps complete all as specified and directed (Location:- BH,DODA,RCTC, APS , CQB & Power House No.1 11 KV Sub Stn) Make:- Yamuna & ABB (Note for item No 14 to 16: - 1.New spare parts shall be measured & paid separetly under relevent items as supply only) 2.Cost of sleeves if replaced shall be demed to be included in unit rate only 3.Transportation requirement at site and back cost shall be included in quoted rate only

Supply and fix and in repairs connected items of 11 KV VCB Mimic display in which circuit breaker 'open' where indication light should be " Green" colour, Breaker 'Close' indication light "Red", breaker 'auto trip' indication light "White" and breaker 'Spring charged' indication light is to be "Blue" and all connected items made serviceable and testing complete all as specified and directed.

M&L for Spray Painting of vaccume circuit breaker 6.6/11 KV following capacity,indoor type with two coats of synthetic enamel paint over a coat of red oxide primer after cleaning, scraping, and filling of cavities and all as per specified and directed by Engineer-in-charge. (i) 6.6KV indoor type VCB 630 Amps

(ii) 6.6KV indoor type VCB 800 Amps

(iii) 11KV indoor type VCB 630 Amps

(iv) 11KV indoor type VCB 800 Amps

Testing of dielectric strength of transformer oil of indoor type transformer, 11KV/433 volt,& filteration of transformer oil by passing through filtration machine /plant to remove moisture , impurities and for improving di-electic strength to above 50 KV for 2.5 mm gap and including filling with new transformer oil for toping up & testing after filtration complete as specified. (Location:- TCP,BH,DODA,RCTC, APS & CQB ,BGTC OLD power house & BGTC Power House No.6 33 KV MRS, 11 KV Sub Stn, MAP Supply Depot) Note :- (a) Transformer oil will be measured & paid separately (b) Contractor carry out the filtration at site by on line machine filtration shall cost quoted in unit rate only

Supply and toping up /replacement of new transformer oil as per IS335 with 50KV di-electric strength complete all as specified . Make: Power /Asian /Savita/Electric as approved

Supply, fixing & replace of silica gel on existing transformers of cap 500KVA/400 KVA/315 KVA/250 KVA/200 KVA/160 KVA/100 KVA and 63 KVA, including breather assembaly suitable size complete all as specified & all as directed.

Repair and maintenance and servicing and overhauling of step down transformers and disconnecting of LT and HT cable carefully from Transformer and opening top cover by removing nuts, bolts and washers and all mounting accessories and conservator tanks,draining out transformer oil, and including of cleaning of oil tank with replacement of all gaskets,oil seals,servicing of tap chaging gears by cleaning and polishing tapping contact points, and dismantling of 4Nos LT bushing and 3Nos of HT bushing with studs and including necessary tools and plant for removal of sediments,carbon deposits at bottom of transformer tank, on core,on winding and cleaning/heating of slica gel in breather and replacing with new silica gel after to make up the reduced quantity and etc and new transformer oil if required for topping up and attending leakages problem and including re assembling and testing with HT megger at the presence of engineer-in- charge upto satishfatory level complete all as specified and directed. Note : (a) Cost of sleeves if replaced shall be deemed to be included in unit rate only. (b) Any transportation requirement at site and back cost shall be included in quoted rate only (c) New transformer oil and spare parts will be measured and paid separatley excluding oil seal at Ser No 20. (d) Filtration of transformer oil will be measured & paid seperately here in before at Ser No 19. (i) Transformer 160 KVA ,11KV/433Volt

(ii) Transformer 100 KVA ,11KV/433Volt

(iii) Transformer 160 KVA ,11KV/433Volt (Location- PH No-2)

(iv) Transformer 200KVA ,11KV/433Volt

(v) Transformer 250KVA ,11KV/433Volt

(vi) Transformer 315KVA ,11KV/433Volt

(vii) Transformer 400VA ,11KV/433Volt(Location- BH,Make:- Auto Electric Gear)

(viii) Transformer 500KVA ,11KV/433Volt(Location- SUPPLY DEPOT & BGTC)

(ix) Transformer 500KVA ,6.6 KV/433Volt(Location- BGTC old power House)

M&L for Burnt out Studs and Busshing with nuts of any material by providing new copper alloy stud with nut,washers and bushing on HT/LT Side and all as directed for following capacity : (i) Transformer 160KVA ,11KV/433Volt (Location- Sainik Cinema Hall ,Make:- Indian Transformer )

(ii) Transformer 100KVA ,11KV/433Volt (Location-P.H. No-4 Make:- Auto Electric Gear)

(iii) Transformer 200KVA ,11KV/433Volt (Location- DODA & APS, Make:- Auto Electric Gear)

(iv) Transformer 315KVA ,11KV/433Volt (Location- DODA,P/H NO. CQB & RCTC Make:- Auto Electric Gear)

(v) Transformer 400VA ,11KV/433Volt(Location- BH & RCTCMake:- Auto Electric Gear)

All as per item No 23.1 here-in-before but 6.6 KV Transformers complete all as specified and directed (i) Transformer 100KVA, 6.6KV/433Volt (Location-BGTC old power House,Make:- Voltamp)

(ii) Transformer 500 KVA ,6.6KV/433Volt (Location-Power House No.6,Make:- Voltamp)

Supply & fix in repair of thermo meter(oil temperature gauge) for indoor type transformer installed at varius Sub stations all as specified & all as directed. (i) Transformer 160 KVA ,11KV/433Volt (Location- Sainik Cinema Hall ,Make:- Bhart Electric )

(ii) Transformer 100KVA ,11KV/433Volt (Location- P. H. No-4 Make:- Auto Electric Gear)

(iii) Transformer 200KVA ,11KV/433Volt (Location- DODA & APS,Make:- Auto Electric Gear)

(iv) Transformer 315KVA ,11KV/433Volt (Location- DODA,P/H No.1 & CQB,Make:- Auto Electric Gear/ Voltamp)

(v) Transformer 400VA ,11KV/433Volt(Location- BH & RCTCMake:- Auto Electric Gear)

Supply & fix in repair of thermometer(winding temperature gauge) for indoor type transformer installed at varius Sub stations all as specified and directed. (i) Transformer 100KVA ,6.6KV/433Volt (Location-BGTC old power House,Make:- Voltamp)

(ii) Transformer 500 KVA ,6.6KV/433Volt (Location-Power House No.6,Make:- Voltamp)

Material and labour for rewiring of unserviceable HT 11 KV VCB motor coils with copper wire/strips wound LT coil,re-strectching,including rewinding the same after providing new necessary insulting packing material, by using the same old strip/wire complete of existing guage alongwith allied materials complete for upto functional requirement of capacity 11 KV VCB complete all as specified and directed.

Disconnected all electrical connections and earth strip at existing Distribution Transformer of Capacity 500 KVA all connected accessories/cables and shifting and transportation safely by hydra/ lifting vehicle and including providing suitable carrying vehicle from existing power house to MES yard and once again shifted from MES Yard to required power houses and making all electrical connections properly with earth strip etc and re connected with the shifted distribution transformer after servicing /overhauling of transformer and testing and including providing functional accessories such as nuts,bolts,washers, lugs, sleevs etc and megger testing and complete all as specified and directed

Materila and labour for rewinding of step down transformer HT coils with copper wire of existing guage alongwith allied materials complete for upto functional requirement of capacity 300 KVA to 500 KVA complete all as specified and directed.

Materila and labour for rewinding of step down transformer LT coils with copper wire of existing guage alongwith allied materials complete for upto functional requirement of capacity 300 KVA to 400 KVA complete all as specified and directed.

Material and labour for fault finding on 11 KV HT cables in trenches of any size and any length with fault detective(fault finding) machine by thumbing method and injection suitable high voltage proper fault finding equipment and all as manufactures instructions and including necessary excavation,returning filling,removing surplus soil,sand, existing bricks etc where find the location of cable faulty complete all as directed. Note: Cost of joints, additional cable etc will be measured and paid separately.

M&L for Spray Painting of Transformer following capacity,indoor type with two coats of synthetic enamel paint over a coat of red oxide primer after cleaning, scraping, and filling of cavities and all as per specified and directed. (i) Transformer 63 KVA ,11KV/433Volt (Location- Sainik Cinema Hall ,Make:- Bhart Electric )

(ii) Transformer 100KVA ,11KV/433Volt (Location-TCP& Nursing Mess,Make:- Auto Electric Gear)

(iii) Transformer 200KVA ,11KV/433Volt (Location- DODA & APS,Make:- Auto Electric Gear)

(iv) Transformer 315KVA ,11KV/433Volt (Location- DODA,P/H No.1 & CQB,Make:- Auto Electric Gear & Voltamp)

(v) Transformer 400VA ,11KV/433Volt(Location- BH & RCTCMake:- Auto Electric Gear)

(vi) Transformer 500 KVA ,11KV/433Volt(Location- MAP SUP DEPOT)

(vii) Transformer 100KVA ,6.6KV/433Volt (Location-BGTC old power House,Make:- Voltamp)

(viii) Transformer 500 KVA ,6.6KV/433Volt (Location-Power House No.6,Make:- Voltamp)

Disconnected all electrical connections and earth strip at existing transformer all connected accessories/cables and shifting of 11 KV/0.433 Volts up to 100 KVA to 500 KVA capacity transformer and transportation safely by hydra/ lifting vehicle and including providing suitable carrying vehicle from existing power house to MES yard and once again shifted from MES Yard to required power houses and making all electrical connections properly with earth strip etc and re connected with the shifted transformer after servicing /overhauling of transformer and testing and including providing functional accessories such as nuts,bolts,washers, lugs, sleevs etc and megger testing and complete all as specified and directed

Material and labour for tree branches/vegitation cutting around the 2/4 polestructure and HT lines and installations from line conductor to tree distance up to 4 mtrs and cutted wood pieces/vegitation materials disposal upto distance not exc 100 mtr at defence land location where as directed and including providing safety eqpts & cutting tools,ladders etc will be own arrangement by the contractor and complete all as specified and directed.Note:- (i) Safety measures will be fully responsible by tenderer (ii) During tree /branches/vegitation cutting any damages on OH lines/installation should be reuniform responsible fully by the tenderer with out any extracost.(iii) Approximately distance covered both side for the HT lines/installatons not exc 100 mtr measured as a one Job only

Material and labour for earthing complete with galvanised steel earth plate electrode 600mmX 600mmX 6mm thick buried directely in ground vertically ( earth pit not less than 2.25 metres deep below ground level) with top edge of plate not less than 1.5 metres below ground level, connected to and including galvanised iron strip of size 32 X 6 mm from earth electrode to test point or up to 7.5mtr whichever is less by means of GI bolts, nuts, check nuts and washers all as per electrical plate no 3 of SSR Pt-I and GI watering pipe of 20 mm dia medium grade,GI funnel with wire mesh,including char coal, salt packed all around the earth electrode plate in layers,PCC earth pit chamber 1:3:6 type C1,RCC cover 1:2:4 type B1, including all excavation,earth work in any strata and returning filling, removal of surplus soil and testing for required value complete all as specified and directed.

Material and labour for paintng of 4 pole structure of any type/size/length and removing from existing pole painting by using wire brush and using with emary paper and cleaning with chemical agents after cleaning of steel tubular pole and GI brackets and cross arms in two coats of red oxide primer and two coats of silver oil painting upto smooth finishining and painting to satisfactorly by Engr-in-charge and painting work carryout at any height and including marking of pole numers as directed and safety eqpts & tools will be own arrangement and complete all as specified and directed. Note:- Cost of painting materials are deemed to be included in quoted rate only.

All as per item No.37 here-in-before but 2 pole structure and complete all as specified and directed.

M&L for steel tubular swaged type poles 11 metrs long,pole weight approximately 175 to183 kgs, pole should be in one piece only and smooth finishing,ISI marked complete with all accessories such as cast iron base plate, finial taper plug,bolts, nuts, screws,washers and drilling of holes for continious GI earth wire as specified type 410 SP-53 including applying two coats of aluminium paint over one coat of red oxide zinc chrome primer and embedded portion shall be painted with two coats of black paint after preparation of surface complete all as specified and directed make as approved

Material and labour for pole painting of 9.00/11.00 mtr long steel tubular type and before removing existing paint by using wire brush and using with emary paper and cleaning with chemical agents after cleaning of steel tubular pole, GI brackets and cross arms in two coats of Red oxide primar and two coats of Silver Oil paint upto smooth finishining to satisfactorly by Engr-in-charge and painting work carryout at any height, including safety eqpts & tools will be own arrangement and complete all as specified and directed

Material and labour for PCC pole painting of any type /size/length and removing from existing pole painting by using wire brush and cleaning with with cotton waste after cleaning of PCC pole in two coats water proof cement based paint in two coats and GI brackets and cross arms in two coats of red oxide primar and two coats of silver oil paint upto smooth finishining to satisfactorly by engr-in-charge and painting work carryout at any height, including safety eqpts & tools will be own arrangement and complete all as specified and directed

M&L for in repair cross arms, bracings, supports, clamps and back plates fabricated in structural GI sections including nuts, bolts,washers, welding, bending, fabrication, cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat one under coat and one finishing coat of paint and including removing old unserviceable item complete all as specified and directed

Material and labour for PCC 1:4:8 type, D2 (using 40 mm graded stone aggregate) for making good cutting portion, mass concrete, filling of foundations etc including necessary use and waste of form work complete all as specified and directed

Material and labour for PCC (1:3:6) type C2 using(40 mm graded stone aggregate ) for making good distrubed road surfaces with necessary use and waste of form work including demolition complete all as specified and directed.

Supply and fix in repair 11 KV out door type Air Break gang operated device of rating 400 Amps, triple pole, vertical type,mechanically operated, mounted on HT insulators and steel channel frame with operating machanism worked from ground level with GI tubing 25 mm dia medium grade with operating handle and locking arrangement including seven lever navtal lock and providing ACSR conductor jumpers duly crimped with lugs, connecting to existing 11 KV supply and testing complete all as specified and directed.

Supply and fix and in repair 11 KV out door type Air Break gang operated device of rating 200 Amps, triple pole, vertical type,mechanically operated, mounted on HT insulators and steel channel frame with operating machanism worked from ground level with GI tubing 25 mm dia medium grade with operating handle and locking arrangement including seven lever navtal lock and providing ACSR conductor jumpers duly crimped with lugs, connecting to existing 11 KV supply and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 sqmm and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 sqmm and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 sqmm and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm and testing complete all as specified and directed.

Supply and fix for cable jointing kit for 11KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm and testing complete all as specified and directed.

Supply and fix for HT 11 KV out door expulsion type lightning arrestor of transmission class having discharge capacity 65 kilo Amps including mounting accessories complete fixed on cross arms of 2 or 4 pole structure and connected with ACSR conductor & earthing connections and testing complete all as specified and directed.

Supply, laying, in trenches/ducts/along wall /through pipes etc testing and commisssioning HT cable, XLPE insulated (Earthed),11 KV, screened PVC bedded, galvanized steel strip armoured, with stranded aluminium conductor of cross sectional area 185 sqmm,3 core conforming to IS:7098 part-II with latest ammendments up to date including suitable aluminium lugs with proper crimping and laid in trenches/ducts/wall/through pipes etc all as specified and directed. (Note:-(i) Excavation,Earth work,sand cushioning,cable covers and cable protection pipes shall be measured and paid separately.) (ii) The cable shall be in one length unless otherwise directed by GE.

Supplying and laying for reinforce precast concrete cable cover class HT , Type 1 , flat size 300mmx180mmx40mm for protection under ground HT cable complete all as specified and directed.

Material and labour for GI pipe 100mm bore "light grade" laid in trenches floors/on , pole/road for cable protection with all fittings complete all as specified and directed .

Material and labour for GI pipe 80 mm bore "light grade" laid in trenches floors/on , pole/road for cable protection with all fittings complete all as specified and directed .

Supply and filling in and speading unwashed river sand for cushioning and covering the under ground cables in trenches and punning to provide required cover complete all as specified in SSR Part-I and as directed.

Excavation in trenches , not exceeding 1.5 mtr wide and not exc 1.5 mtr depth for laying of cables, pipe lines, protection pipes and foundations etc and getting out in soft /loose soil complete all as specified and directed.

Returning filling in soil including spreading leveling watering and well rammimg in layer n exc 25 cm complete all as specified and directed

Removing excavated soil not exc 50 mtr ant depositing where directed at a level not exc 1.5 mtr above the starting point all as specified and directed

Supply and fix drop out fuse unit expulsion type for air break gange operated switch single pole mounted on and including insulators for 11KV working pressure fixed to and including MS channel with nut,bolts and washers etc, synthetic bounded fuse carrying tube complete with line taps and suitable for current carrying capacity upto 50Amps and testing complete all as specified and directed. Note:- The cable shall be in one length unless otherwise directed by GE.

M&L for cleaning the vegitation ,grass,bushes etc with tools and spreding of chemicals where required inside and outside the 11 KV/ 33KV installation perimeter on incl necessary cleaning works and surface excavation in all repect to maintain the installation premises in inspection mode and also cleaning of installation,panel room,verandah ,labour rest room,toilets etc and allied rooms. (i) Neccessary tools like cutting,digging,cleaning cane brooms with bamboo handle and chemical etc providing by contractors for including for area cleaning purpose. (ii) The cost of all items mentioned are including in qtd item rate no extra payment will be paid.

M & L for hardcore of gauge n.exc. 40mm, deposited ,spread and levelled in layers n exc. 15cm thick, watered and rammed to a true surface complete all as specified and directed by Engr-in-charge.

M & L for calibration and testing of protection relays of any make or type fitted on 11 KV RMU's/CSS as per IS and code of practice to ensure NO ERROR including setting for earth fault, over current, phase over current with trip time delay in accordance to feeder load and other parameters of site, settings to ensure that fault shall not travel to nearest source feeder including minor repair, replacement of wiring etc, if required all as directed by Engr-in-Charge. Note : (i) The setting shall be carried out by only qualified engineers. (ii) Caliberation shall be carried out as per load and site conditions to avoid any fault.

S & F for Relay of RMU upto 800Amps, complete all as specified and directed.

S & F for HT bushing of RMU upto 800 Amps, complete all as specified and directed.

Supply and fixing for HT Bus-Bar panel Box type 3 phase 11KV 400Amp rated air insulated busbar with one incoming and one outgoing four leg and base support 3.15mm thick CRCA sheet thick cross arm used standing on floor/on ground including fixiing/grouting with PCC 1:3:6 and HT cable end joint heat shrinkable electric connection complete all as specified and directed.

Surface dressing n.exc 15 cm in deep soft/loose soil complete all as specified and directed.

Supply, laying, in trenches/ducts/along wall /through pipes etc testing and commisssioning HT cable, XLPE insulated (Earthed),11 KV, screened PVC bedded, galvanized steel strip armoured, with stranded aluminium conductor of cross sectional area 95 sqmm,3 core conforming to IS:7098 part-II with latest ammendments up to date including suitable aluminium lugs with proper crimping and laid in trenches/ducts/wall/through pipes etc all as specified and directed (Note:-(i) Excavation,Earth work,sand cushioning,cable covers and cable protection pipes shall be measured and paid separately.) (ii) The cable shall be in one length unless otherwise directed by GE.

M & L for brick work with subclass `B' bricks, straight or curved on plan exc 6 m mean radius built in Cement Mortar 1 : 6 complete all as specified and directed by Engr-in-charge.

Supply and spreading for stone aggregate of size not exceeding 40 mm spread and leveled in layers not exceeding 15 cm to a true surface of broken stones for transformer and pole structure area complete all as specified and directed.