Maintenance of 40 M Tower including providing and fixing missing ladder and cable tray at BTS compound Thingsai Lunglei District

Amount

Carrying out detailed and precise checking of all nuts and bolts,spring and plain washers provided at all the joints/junctions of Base-assembly,vertical leg members,face bracing members,various members of working platforms at different levels,antenna fixture assembly,lightning arrester, aviation light,earth resistance, ladder with safety cage,wave guide rack and all other fixtures etc., proper tightening of all the nuts with torque- wrenches of required size etc.complete including providing new hot galvanised nuts,bolts,spring washers and plain washers etc. of various sizes for fixing where found missing/required.The item also includes providing and applying rust-removing solution or cutting the nuts/bolts etc.The item also includes dismantling/dismembering of any deformed/bent/deshaped member/s which are required to be replaced or repaired. (The payment for supplying hot dipped galvanised nuts,spring washers and plain washers, necessary parts of lightening arrestor and aviation light, earth resistance required to make the part functional shall be made separately under relevant item.)

40.00 m heigh GBT tower

Providing hot dipped galvanised nuts,bolts,spring washers and plain washers of required size and length for fixing the same at the joints/junctions of tower wherever found required during maintenance of tower.(The materials for nuts,bolts shall be of grade 4.6 and as per 6639-1972,IS :1364(Part I to V)-2002,IS:1367(Part VIII)-1992,plain washers as per IS:6610-1972 and spring washers of Type-B as per IS:3063-1994,IS:1148-1982,IS:2015-1977).

Steel work welded in built up sections/ framed work, including cutting, hoisting, ixing in position and applying a priming coat of approved steel primer using structural steel etc. as required.

In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade :

Two or more coats on new work

Transportation of steel material including ladder, cable tray, bolts, nuts of any dia & length and connecting plates etc. all from Lunglei to BTS site at Thingsai. etc as per the directions of Engineer- in-charge.( Total steel material of weight up to 500 kg & distance up to 125 km)

Credit for damaged/corroded GI angles,flats,nut & bolts

David Zonunmawia (BID ID -752965)