Housing Department

Housing Department has published Tender For supply installation testing and commissioning Of Lightning Conductor At 40 By1 Tangra Lig Total Block 41 Nos.- 1 S & F Lightning conductor Air-terminals made of 15 mm dia 1500 mm long GI pipe (ISI Medium) having five prongs of 4 SWG GI (Hot Dip) wire at top with 85 mm dia 6 mm thick GI base plate at bottom incl. necessary holes etc. duly grouted on the parapet etc. in CC mortar (4:2:1) 2 Supply & fixing GI (Hot Dip) strips 20 mm x 3 mm thick for horizontal run on the Parapet/Roof/ Wall with GI Saddles 1100 mm apart incl. mending good the damages to building works 3 Supply & fixing of GI (Hot Dip) strips 20 mm x 3 mm thick for vertical run on wall with GI saddles spaced not exceeding 1000 mm apart incl. mending good damages to building work 4 Cutting cornices/ steps etc. including cutting recess in buildings etc. & supply & fixing 15 mm bore (ISI-Medium) GI pipe protection as below and mending good damages to the building works:Length upto 0.5 Mtr 5 Making soldered joints between conductors and down pipes/ other metallic objects for 14 SWG GI (Hot Dip) wire including supply of necessary 4 SWG GI (Hot Dip) wire, jointing materials and painting with 2 (two) coats of bituminous paint 6 Hiring charges for scaffolding arrangement including dismantling at the end of work and carriage, for LC installation, per storey of building per vertical run 7 Supply & Fixing of Testing Jointsby 20 mm x 3 mm thick GI (Hot Dip) strip 125 mm long grouted on wall having clearance of 6 mm from wall for making connection with thimbles at the end of 7/10 SWG GI (Hot Dip) stranded Wire and 4 SWG GI (Hot Dip) wire of vertical conductor and conductor from earth electrode complete with S & F thimbles, GI bolts, nuts, check-nuts, spring washers etc. as required 8 Earthing with 50 mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1 x 4 SWG GI (Hot Dip) wire (4 Mts. long), 13 mm dia x 80 mm long GI bolts, double nuts, double washers incl. S & F 15 mm dia GI pipe protection (1 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level driven to an average depth of 3.65 Mts. below the ground level as below:By ISI-Medium GI pipe 9 Excavation of soil for installation of Earth Electrode and filling & ramming.For Soft Soil 10 Supplying & fixing medium gauge GI Pipe ( ISI-Medium) Protection with necessary fittings and jointing metarials as required 32 mm dia 11 Extra for providing masoneryenclosure on the top of the earthelectrode of overall size 86.36 cm x 86.36 cm x 46 cm deep(below Ground level) complete with cemented brick work(1:6)of 25 cm width duly plastered with cement morter (inside) CIhinged inspection cover of size 36.56 cm x 35.56 cm with lockingarrangement, GI reducer including drilling of 46 nos. 12 mm diaholes on the GI pipe 12 Extra for treatment of soil by using salt & charcoal or coke for plate electrode 13 Add. G.S.T.@ 18% (on Total from item no 1 to 12) to be calculated by bidder 14 Add. LWC.@ 1%to be calculated (on total from item no 1 to 12 + GST@18%) by bidder . Last date of submission for this tender is 2025-03-11. This is a Conductor tender in kolkata, West Bengal