Civilwork

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 fixing of new hot dipped galvanised nuts,bolts,spring washers and plain washers etc. of various sizes where found missing/required.The item also includes providing and applying rust-removing solution and cutting the nuts/bolts etc. wherever required to be replaced. 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, required to make the part functional shall be made separately under relevant item.)

GROUND BASE TOWERS 40m high GBT tower (4L-NB)

Note: (1) Necessary safety precautions to protect the human lives,insurance-coverage etc.shall be the sole responsibility of the agency. (2) All the safety measures shall be taken by the agency as per the relevant IS codes. (3)The painting shall be done carefully so that all the corners and crevices of the tower receive the paint. (4) No driers such as litharge or turpentine are to be used.The practice of mixing kerosene-oil with paint is strictly forbidden.

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).

Supplying & Fixing of hot-dipped galvanised steel members for tower to fix the same wherever found missing or replace any damaged/bent tower members (The material to be used for tower -member shall be galvanised M.S. of grade 'A' as per IS:2062-1999 & IS:808-1989 and satisfy the relevant tests as per IS codes.The fabrication shall be done in accordance with IS:800-1984 and also in accordance with the approved drawings for the tower under maintenance.The galvanising shall conform to IS:4759 & 2629.The total mass of galvanising coating shall not be less than 610 gms/sqm.i.e. 85 microns thickness.)