Bharat Sanchar Nigam Limited-BSNL has published Erection Of 15.0 Mtrrooftopmast Atroof Top Of Te Amini Including Transportation Of Mast Materials From Kadamath Te Compound, Earthing And Painting. Submission Date for this Tender is 03-04-2023. Electrical Maintenance Tenders in amini Lakshadweep. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 30-Mar-2023 | change in date of opening and closing | Date | 03-04-2023 |
| Sl. No. | Item Description |
| 1 | Transportation of three ( 3)nos of mastmaterials made of angular section,each of size up to5.00metres x 0.80mx0.80m from Kadamath Telephone Exchange/Satellite Compound, to the site atAminiincluding transporting by tractor/truck to Kadamath Jetty, by boat / barge from Kadamath Jetty to Amini Jetty , again by tractor / truck from Amini Jettyto Amini TE compound ,loading and unloading at all transit points andstacking etcofas per direction of Engineer-in-charge. |
| 2 | Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement : |
| 3 | a) 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) : 3 graded stone aggregate 20 mm nominal size) |
| 4 | Centering and shuttering including strutting, propping etc. and removal of form for : |
| 5 | a)Columns, Pillars, Piers, Abutments, Posts and Struts |
| 6 | Steel reinforcement for R.C.C. work including straightening, cutting,bending, placing in position and binding all complete above plinth level. |
| 7 | Thermo-Mechanically Treated bars of grade Fe-500D or more |
| 8 | Labour charges for erection of mast upto a height of 15M over roof top terrace of height up to 10 metre fromground level etc without causing damage to the mast materials as well as the building including straightening /replacementofmast members,MS hot dipped galvanized nuts, bolts and washersif any required which shall be separately paid with necessary tools and plants required and all as directed by the Engineer-in-charge |
| 9 | Supplying |
| 10 | MSfoundation bolts, bolts and nuts for mast all complete etc at site. |
| 11 | good quality MS hot dipped galvanised bolts, nuts, plain and spring washers etc. of different diameter size specified for tower works at site. |
| 12 | Placing of anchor bolts in sets corresponding to the requirement of mast erection including all labours and handling charges and checking with templatemade of 2 mm thickMS sheet of size 1meter x1 metreofthe lay out of foundation boltsin line, level, plumb etc complete including all cost oflabour and materialsas per direction of Engineer - in- charge. |
| 13 | Providingand fixing Stainless steelwire ropes of 6mm dia for anchoring and tightening the mast with necessarystainless steel fastners, SS "D" Shackle,SSturn buckle ,SS tighteningclip, nut bolts etc.complete |
| 14 | Drilling holes of 16mm dia holes on roofing slab/beam upto 10-15cm depth and fixing 12mm anchor bars bent torequired shape and length up to 60cm which shall be paid separatelywith high strength polyester resin anchor grout (Fosroc Lockfix-S) or equivalentas per the direction of engineer in charge |
| 15 | PaintingMastwith synthetic enamel paint or equivalent in two or more coats over and including base coats of etching primer or equivalent of required shade and colour as directed by engineer in charge. |
| 16 | Providing G.I bus bar of 25 X 5 mm connected to thetinned bottom portion oflightning conductor and to the ring earth/plate earth with 2 Nos of 10 mm dia GI nuts & bolts [with lead sheath in between]at each connection.The bus barshall be drawn through heat shrink sleeve and shall be shrunk properly.The bus bar shall be clamped to the tower/ building walls atuniform interval of 1.5 Mt.. using proper GI clamps and ceramic insulators such that the bus bar shall be well insulated from the tower building walls all complete as directed by the Engineer-in-charge.(All joints should be covered by Shalimar or equivalent water proof tape and made air tight) |
| 17 | Providing GI strips of size 25 X5 mm one endconnected to the tower leg with GI bolt and nuts (with lead sheath in between) including providing and connectingthe legs at the bottom oftower and the other end shall be connected to the GI plate earth/ring earth with GI bots and nuts [with lead sheath in between] including clamping the down lead flat to walls/stems without any sharp bends usingnecessary clamps and screws as directed by the Engineer -in-charge.(All joints should be covered by Shalimar or equivalent water proof tape and made air tight) |
| 18 | Providing and fixingcopper lightening arresterwith necessary fixtures at thetop of the mast. The spike shall be insulated from tower by using proper GI clamps and ceramic insulatorsand shall be connected to G.I plate earthing by GI bus bar of 25x5mmwhich shall be paid seperately. |
| 19 | Supply of maintenance free earthing system consisting of UL listed copperbonded steel electrode withminimum254micron coppercoating all through with ground enhancement material(GEM) tested for leaching & TCLP as per IEC62561-7 with heavy duty inspection pit with green cover made on polyamide material which can handle minimum 5 ton staticload. The systems shall be conforming to IS3043,lS/IEC 62305, IEC 61643-5-54,UL467 and the rod tested for dimention, marking, tensilestrength,salt mist,coating thickness, electrical resistivity test before and after corresion test etc as per IEC 62561-2. Each set shall consists of following BOM (1)17.2mm dia,3metre rod,minimum 254 micron copper bonding steel electrode-1No. (2) Ground enhancrnent material of 22Kg-(2bagof11.3Kg/each) (3)Earth inspection pit with green cover having a minimum load bearing capacity of 5 ton staticload. |
| 20 | Providing and fixing PVCpipes of pressure class of 4 Kg/Sq.cm complete fittings and clamps including cutting and making good the walls etc complete |
| 21 | a) 65 mm outer dia |
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