SPECIAL REPAIRS TO SPACERS FOR LIGHTNING ARRESTOR STRIPS OF WSA BUILDING AT AFS JAISALMER

M&L for testing of existing earthing at various location in tech area as directed Engineer in Charge using four point method (wenner method) or three terminal methods (fall of potential method) with appropriate earth resitance tester, spike and wire, recording of earth test results in register as per format given by Engr-in-charge and submitting the same to Engr-in-charge after test complete all as directed at site.

M&L for reviving of old unserviceable earthing by excavating the existing earthing, checking the condition of earth electrode of any type, Water pipe, earthing strip of any type, providing of charcoal, salt in alternate layer all arround the earth electrode after cleaning it throughly if found serviceable, re- fixing of existing protection pipe, earthing strip, watering pipe, funnel etc and returning, filling in excavated soil, making of earth pit chamber PCC 1:2:4 type B-1 and earth pit chamber cover reinforced with hard drawn steel wire fabric weighing not less than 4 Kg/sqm in liew of CI cover as per earth plate No 5 of SSR complete all as specifed and directed at site. Note : 1. After excavation of existing earth, if the condition of earth electrode, GI protection pipe, watering pipe, funnel, earth strip is not satisfactory, the same shall be provided under relevent item as supply and fixing, 2. If the condition of earth electrode, GI protection pipe, earth strip, funnel, GI watering pipe is serviceable, then earth shall be revived using necessary quantity of charcoal and salt, cost of the same shall be deemed to be included in unit quoted rates, 3. Cost of excvation, R&F, removal, making of new earth pit chamber of PCC, PCC chamber cover, charcoal and salt, nuts, bolts, washers shall be deemed to be included in unit quoted rates

Supply and fixing in repair of Galvanised iron earth electrode plate of size 600x600x6mm complete all as specified and directed at site.

Supply and fixing in repair of copper earth electrode plate of size 600x600x3mm complete all as specified and directed at site

Supply and fixing in repair of watering funnel as per existing for earthing complete all as specified at site

Supply and fixing in repair GI Pipe light grade, 20mm dia , galvanized, with all fittings complete all as specified and directed

Supply and fixing in repair GI Pipe light grade, 40mm dia , galvanized, with all fittings complete all as specified and directed

Supply and fixing in repair GI Pipe light grade, 50mm dia , galvanized, with all fittings complete all as specified and directed

M&L for taking down of copper earth strip of any size and kept aside for schedule of credit or refixing at site

M&L for copper strip 20 x 3.15 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground