REPAIR/ MAINT/ REPLACEMENT OF EARTHING INFRASTRUCTURE OF 505 SU AF STN MAMAURA.

Amount

Material and labour for earthing complete with galvanised steel earth plate electrode 600 mm x 600 mm x 6 mm thick burried directly in ground (earth pit not less than 2.25 metres deep below normal ground level) with top edge of plate not less than 1.5 metre below normal ground level connected to galvanised earth lead wire 4 mm dia by means of steel bolts, nuts, check nuts and washers etc connected to earthing point and testing on completion with and including 15 mm bore light grade G.I. protection pipe (upto 7.5 metre beyond outer edge of earth pit) PCC pit in mix 1:3:6 type C1 (using 20 mm graded stone aggregate) with RCC 1:2:4 type B-1(using 20 mm graded stone aggregate) 40 mm thick cover reinforced with 6 mm dia ms bars 3 nos both ways with lifting hook made out of 6 mm dia bar, watering arrangement with funnel and wire mesh and 20 mm bore light grade G.I. watering pipe, common salt and charcoal filling, necessary excavation and earth work complete all as shown in electrical plate no 3 of MES Schedule Part-I 2009

Same as Item No-1 above but using galvanised iron strip 32X6mm as earth lead

Same as Item No-1 above but using Copper plate 600X600X3.15 mm thick electrode and 20x3mm copper strip as earthing lead

M&L for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or burried in ground or drawn in conduit /pipe or fixed to poles or any other indicated situation for loop earthing etc of following Size.

galvanised iron strip of size 32x6 mm

copper earth strip of size 20X3mm

Repair/replacement of earthing PCC pit made in mix 1:3:6 type C1 ( using 20 mm graded stone aggregate) with 40 mm thick RCC cover made with MIX 1:2;4 type B1 ( using 20 mm graded stone aggregate and reinforced with 6 mm dia M.S bars 3 nos both ways with lifting hook made out of 6 mm dia bar, replacement of watering arrangement with funnel and wire mesh.complete all specified and directed.

Supply and fixing of earth strip insulator of suitable size and material complete all as specified and directed.

Supply and fixing Test point terminals for earthing infrastruture for proper checking of earth resistance value complete all specified and directed.

DUWELL CONTROL PANELS

M/s Hanspal Enterprises

m/s pal associates