PROVISION OF NEW EARTHING INFRASTRUCTURE AND IMPROVEMENTTO EXISTING EARTHING INFRASTRUCTURE AT AF STN JAISALMER

Amount

M&L for Chemical Earthing complete with CPRI tested 50mm bore pure copper earth electrode pipe with wall thickness of copper pipe not less than 20 gauge, of length 3000mm, pipe in copper strip Technology with NABL tested, RoHS compliant earth enhancement compound 50 Kg in each bore hole in tripod configuration (three numbers of 50mm dia pure copper electrode pipe) interconnected with 20x3mm size copper strip and connected by means of exothermic brazing & porected by GI pipe light grade 32mm bore and PCC (1:2:4) type B1 earth chamber & cast iron earth pit cover 300x300x3mm connecting to test point & testing on ground complete includingexcavation, earth work, boring in any type of soil strata & cleaning of site complete all as specified and directed. Note :- (i) Cost of 20x3mm size copper strip and 32mm bore GI pipe light grade required for interconnection of three numbers of pure copper 50mm dia earth electrode is deemed to be included in unit quoted rates. Copper strip of suitable size from earth pit to test point/equipment shall be measured and paid seperately. (ii) Cost of earth work, boring, PCC earth pit, CI cover, testing of earth after completion, connecting and commissioning is deemed to be included in unit quoted rates. (iii) Marking & painting of earth pit with iron plate of suitable size is deemed to be included in unit quoted rates (iv) The boring will take place for 350mm dia and 3m depth for three numbers of pure copper earth electrode pipe to form tripod configuration. Earth enhance compound to be filled around the earth electrode in 100mm dia in 3 layers of 1m each by means of PVC pipe of 100mm dia as casing/formwork. The remaining volume of bore shall be filled with clay soil available in vicinity in 3 layers of 1m each. The PVC pipe shall be removed sinultaneously. The cost of all this is deemed to be included in the quoted rate. (v) Minimum distance between each earthing is not less than 3m. (vi) Testing of earthing shall be conducted and result should be less than 1.00 Ohms. (vii) On testing after completion if the desired earth resistance is not obtained the earthing will be redone at no extra cost.

All as per Item No. 1 here-in -before but Chemical Earthing complete in replacement. (Note:- It shall be entirely a new provision against existing defunct Chemical Earthing of any type)

M&L for Conventional Earthing complete with Galvanised Iron earth plate electrode 60cmx60cmx6mm thick buried directly in ground vertically at (Earth pit not less than 2.25m deep below ground level) a depth not less than 2.25m below normal ground level with top edge of earth plate at depth not less than 1.5m below normal ground level surrounded from all sides by 15cm thick packed layer of charcoal dust and common salt filling in alternate layers and electrode connection by using 32x6mm size galvanised iron strip by means of bolts, nuts, check nuts and washers of galvanized iron and protected by 40mm bore GI pipe medium grade connected to main switch board or main control board and 20mm bore GI pipe light grade for watering and including funnel, wire mesh, 80mm thick pre-cast RCC (1:2:4) type B-1 cover reinforced with hard drawn steel wire fabric weighing not less than 4Kg/Sqm in lieu of CI cover, PCC (1:2:4) type B-1 pit/chamber including all necessary excavation: and earth work, form work, disposal of surplus soil to a distance not exceeding 50m all as specified and al shown in Electrical Plate No.3 of MES Standard Schedule of Rates 2009 Part-I complete all as specified and directed. Note:- (i) The unit rate shall deemed to include for Test point, PCC pit, 32x6mm size galvanised iron strip from top of the earth plate up to 7.5m above ground level. In case 40mm bore GI pipe medium gradeI protection pipe required is less than 7.5m, no price adjustment shall be made. (ii) PCC pit shall be provided at least 500mm away from the earth pit and not just on the earth pit and extra cost of additional length of water pipes and fittings, junctions, elbow etc shall be deemed to be included in the unit rate. (iii) On testing after completion if the desired earth resistance is not obtained the earthing will be redone at no extra cost.

All as per Item No. 3 here-in -before but Conventional Earthing complete in replacement. (Note:- It shall be entirely a new provision against existing defunct Conventional Earthing of any type)

S&F 32 X 6mm size copper strip earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe pr fixed to poles or any other indicated situation for loop earthing etc completion complete all as specified and directed.

S&F in replacement 32 X 6mm size copper strip earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe pr fixed to poles or any other indicated situation for loop earthing etc completion complete all as specified and directed.

S&F 20x3mm size copper strip earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe pr fixed to poles or any other indicated situation for loop earthing etc completion complete all as specified and directed.

S&F in replacement 20x3mm size copper strip earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe pr fixed to poles or any other indicated situation for loop earthing etc completion complete all as specified and directed.

S&F 32 X 6mm size galvanised iron strip earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe pr fixed to poles or any other indicated situation for loop earthing etc completion complete all as specified and directed.

S&F in replacement 32 X 6mm size galvanised iron strip earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe pr fixed to poles or any other indicated situation for loop earthing etc completion complete all as specified and directed.

Supply, lay and fix 50mm bore galvanised iron pipe light grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix in replacement 50mm bore galvanised iron pipe light grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix 32mm bore galvanised iron pipe light grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix in replacement 32mm bore galvanised iron pipe light grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix 20mm bore galvanised iron pipe medium grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix in replacement 20mm bore galvanised iron pipe medium grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix 15mm bore galvanised iron pipe medium grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

Supply, lay and fix in replacement 15mm bore galvanised iron pipe medium grade with all fittings as protection pipe for earth strips, laid in trenches, fixed on poles, walls and ceilings or laid in floors, laid in road crossing /hard standing/pole protection fixed with clamps of size 25x3mm mild steel flat iron as welded to pipe as per site requirement etc complete all as specified and as directed.

S&F 20mm bore gun metal gate or globe valve with iron wheel head screwed both ends completion complete all as specified and directed.

S&F in replacement 20mm bore gun metal gate or globe valve with iron wheel head screwed both ends completion complete all as specified and directed.

S&F 15mm bore bib taps cast copper alloy with crutch or butter fly handle, screwed down high pressure complete all as specified and directed.

S&F in replacement 15mm bore bib taps cast copper alloy with crutch or butter fly handle, screwed down high pressure complete all as specified and directed.

S&F Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw complete all as specified and directed.

S&F in replacement Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hexagonal head screw complete all as specified and directed.

Excavating in trenches in soft/loose soil., n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits,manholes, pier holes, for pipes and electric cables etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out complete all as speified and as directed.

Excavating in trenches in hard/dense soil., n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits,manholes, pier holes, for pipes and electric cables etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out complete all as speified and as directed.

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

Removal of surplus soil to a distance not exceeding 50mr away and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

M&L for providing cement concrete (1:2:4) type B-1, using 20 mm graded crushed stone aggregate as in coping, surface channel of manholes/ drains, cills, hold fasts, in any position, benching for manholes,water stand post, plateform, path and the like; including weathering, slightly rounded or chamfered angles and throating including necessary form work as complete all as specified and directed.

Note :- Unit rate(s) qouted by the contractor for Item(s) "in replacement or in repairs" shall be deemed to be included for dismantling / taking down or up carefully existing item(s) and removing the old unserviceable or serviceable or partly serviceable materials from site, which shall be sold to the contractor as per "Schedule of credit' and shall be the properity of the contractor. No claim whatsoever as to the quality of old retrieved material shall be entertained on this account.

S.D. And Company

HUMERS INFRATECH

SHOBHIT BUILDERS

Anil Builders

SANJOLI CONSTRUCTION COMPANY