Design, Fabrication and Erection of Grid type Mesh Earthing suitable for rocky area at 33 kv/11kv Main Sub Station at DhoriArea

Amount

Earthing with copper earth plate 600 mm X 600 mm x 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement ad watering pipe 2.7 meter long etc with excavation and refilling as required 600 mm X 600 mm X 3 mm thick Copper plate (10.5 kg each) 20 mm G.I rod of length 7 mtr

Erthing with Providing of 80 mm copper bond Chemical filled earthing electrode with backfill compound and necessary arrangement including masanory enclosure with excavation and refiling as required

Providing Fixing of Earth bus of 50 mm X 5 mmcopper strip on surface for connection etc as required

Supply and laying 25 X 5 mm copper strip at 0.5 m meter below the ground as strip earth electrode , including connection /terminating with nut , bolts , spring wsher etc as required

Providing and fixing of 25mm X 5 mm G.I. Strip after excavation upto 1.5 mtr and forming a grid mesh with a gap of 1 mtr in each strip and connecting with electrode etc

Providing fixing of polyvinyl Chloride (CPVC) pipes having thermal stability all CPVC brass and straight fitting , including fixing the pipe with clamp , this include jointing the pipe & fitting with solvent including laying of pipe and excavation and refilling. 50 mm dia pipe

Providing and placing on terrace ( at all floor levels ) polyethylene water storage tank IS:12701 marked ,with cover and suitable locking arrangement and making necessary holes for inlet , outlet and over flow pipes but without fittings and the base support for tank.

Constructing masonry Chamber 30x30x50 cm inside ,in brick work incement mortar 1:4 (1cement:4coarsesand) for stop cock , with C.I. surface box 100 x 100 x 75mm (inside) with hinged cover fixed in reinforced cement concrete slab 1:1.5:3 mix ( 1cement : 1.5 coarses and : 3 graded stone aggregate 20 mm nominal size ),i/c necessary excavation, foundation concrete 1:5:10)1cement:5fine sand : 10 graded stone aggregate 40 mm nominal size ) and inside plastering with cement mortar 1:3 ( 1 cement : 3 coarses and ) 12 mm thick , finished with a floating coat of neat cement complete as per standard design :

Shifting cleaning and laying of gravels after proper erection of earthing system

Rehandiling of ht cables

Supply and Providing of drip watering system suitable for mesh earthing .

Supervision and contactor profit on M.R items

Total impact of GST for the purpose of CTC