REPAIR/REPLACEMENT TO EARTHING INSTALLATIONS AND CONNECTED E/M WORKS AT AF STN GWALIOR

Amount

Disconnecting of any type of earthing strips/earth wire leads of any size, any description and in any postion from test point carefully and testing the earth resistance of any type of earthing with the help of digital earth tester of make WACO/or equivalent of suitable capacity maintaining record duly signed by users / JE E/M including carrying out periodical maintinance of joints of earthing strip, by opening, proper cleaning, rubbing the surface by sand paper/ file / tightening / replacement of nuts, bolts & washers of GI / brass and reconnecting of earthing strip/wire lead after test on original position complete all as specified and directed. NOTE :- (i). The contractor will arrange digital Earth Tester, all T&P & accessories for recording the reading.Testing shall be done as per method shown and described in instruction booklet of manufacturer of digital earth resistance tester. (ii). The record of resistance value of each earthing alongwith date of testing shall be maintained. (iii) Contractor will get the testing of earthing in such a way that each earthing shall be tested & maintenance repeately untill total qty covered on the working days. Hence contractor is advice to quote the rate accordingly. (iv)Testing of earthing shall be paid as one unit per earthing.

M&L for Reconditioning of high resistance earthing by watering in the earth pit through watering pipe mixed with common salt minimum 10 Kg for each earthing pit to improve the resistance and filled/dropped in earthing through de-watering pipe as per site condtion,de-watering pipe to be clean by means of appropriate size rod/steel wire all as directed. Note:- The water for this purpose shall be supplied by the deptt at the nearest available source but contractor shall make his own arrangement for drawing water from approved source.

Labour only for rep/maint of of existing tilted/embeded earth pit by digging not exceeding 3 feet deep around earth pit , filling by nearby soil & re-adjusting the earth pit in proper manner complete all as specified and directed.

Disconnecting & taking up or down existing unserviceable / deshaped, aluminium / GI earth strip or taking down conductors of any size and in any position, stacking properly the serviceable strips for re-use in the work including making good the distrurbed surfaces to match with the existing surfaces complete all as specified and directed.

Supply & fixing in repair light grade, 40mm dia GI tubing with all fittings fixed on walls/ poles/ in trenches as in earth lead protection pipe complete all as specified and directed.

Supply & fixing in repair test point terminal block made out of Gun metal or phosphorous bronze of size 75 mmx75 mm x25 mm drilled and screwed including 03 Nos 8 mm dia 25 mm long hexagonal head screws complete all as specified and directed. Note : - Unit rate quoted by the contractor shall include the following: (a) Taking up or down GI socket 40mm / reducer socket 50x 40mm bore including aluminium gutaka complete all as specified & directed. (b) Fixing only GI socket 40mm bore , on vertical pipe post / stand complete all as specified and directed. (c) Old retrieved GI socket obtained in serviceable condition shall be re-used in the work.

Supply & fixing in repair earth pit of internal size 300mmx300mmx300mm with wall thickness 100mm casting at site with and including PCC base 500X 500X100mm made of PCC (1:3:6) type C-1 (using 20mm graded stone aggregate) with 40 x 40 x 6mm mild steel angle iron frame for cover, pre cast 40mm thick RCC cover of (1:2:4) type B-1 (using 20mm graded stone aggregate), rainforced with 8mm dia TMT bars 3 Nos both way with 12mm dia MS round bar handle etc.including removal of old broken unserviceable earth pit from site complete all as specified & directed. Note : - Excavation, returning filling and removal of soil shall be included in quoted rate.

Supply & fixing in repair earth pit cover, pre cast RCC (1:2:4) type B-1 using 20mm graded stone aggregate, 320mm x 320mm x 40mm thick, cover reinforced with 8mm dia TMT bars 3 Nos both way with 12mm dia MS round bar handle with and including necessary form work complete all as specified & directed. Note : - Excavation, returning filling and removal of soil shall be included in quoted rate.

S&F in repair GI funnel with wire mesh for watering the earth pit made to shape and size with using PGI sheet minimum 1.0mm thick and fixed in position complete all as specified and directed.

S&F in repair marker fabricated with 14 gauge MS sheet of size 300mmx180mm rectangular with 20 mm square hollow bar 60 cm long duly painted of colour as directed for writing ER value, date of testing and due date for testing, Earth pit No etc complete all as specified and directed.

M&L for painting one coat of synthetic enamel paint on earth pit & cover complete job with approved colour complete all as specified and directed.

S&F in repair HDPE DWC flexible pipe of Size 40mm external & 33 mm internal dia (ISI marked) including required clamps/couplers to be fix at 1.5 mtr interval on wall to fix the pipe properly and smooth suitable for insulation & protection of GI strip of any size complete all as specified and directed.

M&L for earthing complete with galvanized steel earth plate electrode 600mm x 600mm x 6mm buried directly in ground vertically to a depth not less than 2.25 metre below normal ground level (with top edge of earth plate not less than 1.5 metre below ground level) connected to galvanized iron earth strip 32 x 6 mm (main earthing lead) by means of galvanized bolts, nuts and washers all as shown in electrical plate No 3 of MES Schedule Part-I (2009) connected to earth test point & to main switch board with & including adequate quantity of charcoal dust and common salt alround earth plate & 40 mm dia GI pipe medium grade for earth lead protection pipe for suitable length and GI pipe 20 mm dia medium grade for watering pipe with funnel & wire mesh including necessary earth work and PCC (1: 3 : 6) type C-1 for earth pit , internal surface of concrete shall be given 10mm thick plaster in CM 1:4 and 40 mm thick precast RCC cover 1 : 2 : 4 ,type B-1( using 20 mm graded crushed stone aggregare ) reinforced with 8 mm dia TMT bars @ 75 mm c/c both ways with 12mm dia round bar as in handle including taking down of existing earthing complete all as specified & directed. NOTE : (i) The cost of earth lead and its protection pipe upto and including 7.5 mtr only from the top of earth electrode are deemed to be included under this item and additional earth lead , if any, required at site shall be measured and paid for separately under appropriate item of Schedule `A’/BOQ. (ii) Any joint in earth lead from earth electrode to test point shall not be allowed/permitted.

~Ditto~ All as per Item No 13 but earth strip 25 x 4 mm (main earthing lead) all as specified and directed.

~Ditto~ All as per Item No 13 but earth wire 4 mm dia (main earthing wire) all as specified and directed.

Material & Labour for copper Earthing complete with 60×60cm ×3.15mm thick electrode, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to 20×3mm copper strip as earthing lead by means of bolts, nuts, check nuts and washers of copper all as shown in electrical plate No. 3 connected to earth test point & to main switch board with & including adequate quantity of charcoal dust and common salt alround earth plate & 40 mm dia GI pipe medium grade for earth lead protection pipe for suitable length and GI pipe 20 mm dia medium grade for watering pipe with funnel & wire mesh including necessary earth work and PCC (1: 3 : 6) type C-1 for earth pit , internal surface of concrete shall be given 10mm thick plaster in CM 1:4 and 40 mm thick precast RCC cover 1 : 2 : 4 ,type B-1( using 20 mm graded crushed stone aggregare ) reinforced with 8 mm dia TMT bars @ 75 mm c/c both ways with 12mm dia round bar as in handle including taking down of existing earthing complete all as specified & directed. NOTE : (i) The cost of earth lead and its protection pipe upto and including 7.5 mtr only from the top of earth electrode are deemed to be included under this item and additional earth lead , if any, required at site shall be measured and paid for separately under appropriate item of Schedule `A’/BOQ. (ii) Any joint in earth lead from earth electrode to test point shall not be allowed/permitted.

Supply & fixing in repair aluminium gutka 40mm dia having internal thread of 12mm dia and external thread of 40mm dia and fixed on GI socket with air termination rod 300/1200 mm long of suitable size complete all as specified and directed.

S & F in repair 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 or fixed to poles or any other indicated situation for loop earthing etc. as required 4 mm dia galvanised iron or steel wire all as specified and direcetd.

S & F in repair 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 or fixed to poles or any other indicated situation for loop earthing etc. as required 25x4mm galvanised iron strip all as specified and direcetd.

S & F Earth continuity strip or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 32 x 6 copper strip all as specified and direcetd.

S & F Earth continuity strip or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 25 x 3 Aluminium strip with apoxy insulator of suitable size of fixing on walls/floors all as specified and direcetd.

M & L for PCC 1:2:4 type B2 (using 40 mm graded stone aggregate) as in hardstanding finishing even and making good the disturbed surface complete all as specified and directed.

m/s varsha traders

M/s KKPARASHAR

Kumar Sales Corporation

DIJY CONSTRUCTION

JAI SHITLA CONSTRUCTION COMPANY

Mukesh Enterprises