Improvement works to Junction Tower - 20 A and Providing approach road to Conveyor 72 Drive Floor JT - 20 A at ECHS area

Earth work excavation and depositing on bank with initial lead of 10m and initial lift of 2m in sand, silt or other loose soil wet sand or silt not under water light black cotton soil sandy loam and ordinary soil including excavated earth.

Providing, laying, Spreading and compacting graded stone aggregate to Wet mix Macadam specification including premixing the materials with water at OMC in mechanical mix plant carriage for mixed material by tipper to site laying in uniform layers with pavers in sub base/ base course on well prepared surface and compacting with vibratory roller to achieve 98% of MDD complete as per clause 406 of MORTH- Rev 5 specification. The aggregates shall confirm to the physical requirements set forth in table 400-10 grading requirements as per table 400-11 of MORTH specification and as directed by the Engineer as per Cl.406 of MORTH V - revision.

Providing two legged scaffolding for average height of 14.00 m using 10cm dia casuarina props, distance between two rows being 1.25m and spacing of posts being 2m in both rows, with two horizontal posts with 0.50m overlap on either side and braces at 2m c/c including longitudinal and transverse middle braces to step up and providing a platform with C.W.Planks of 40mm thick and 1m width etc., complete using coir and nails.

Clean removal of wornout cement plaster from walls & plastering with C.M 1:5, 12 mm thick including one coat of primer with white cement, cost of all materials, labours, lead, lift, curing, etc. complete.

Providing and fixing steel door of required size with single leaf, frame using 30x30x5mm M.S.angle shutters with 30x20x3mm M.S.angle and flat 4x5mm for door sfiffner center portion 20x5mm for shutter stiffner horizontal and 16x5mm for door stiffner outer vertical and horizontal with 2mm thick M.S.Sheet both sides made with 2 no. tower bolt, 1 no. aldrop, 2 no. handles, 3 nos. hinges with cost of all materials lead lift etc., complete including two coats of approved quantity enamel paint over the priming coat of red oxide.

Removing the spalled/ distressed RCC from the existing concrete to average thickness of 75mm disposal of debris with a lead of 1km and roughening the surface thoroughly with reebaklens fosroc acid/equivalent with all lead lift labour etc., complete.

Micro concrete for RCC column and beams a) Applying One coat of Nito Zinc/equivalent primer after thorough cleaning of rust in the reinforcement rate including cost of all materials, labour, lead, lift etc., complete as directed by the engineer at site. B) Providing fabricating and erecting slurry tight form work with plywood shutters with suitable supports, which do not deform due to micro concrete including cost of all materials, labours, lead, lift, etc., complete as directed by the engineer at site. C) Providing micro concrete Rendroc RG (or) equivalent as per manufacture's specifications. This mixed micro concrete should be placed continuously for an average thickness of 75mm including cost of all materials, labours, lead, lift, etc., complete as directed by the engineer at site. D) Applying one coat of polymer modified Acrylic Emulsion (Nito bond AR or equivalent) on the finished concrete surfaces as a curing membrane including cost of all materials, labours, lead, lift, etc., complete as directed by the engineer at site.

Supplying and providing RTS reinforcement including cutting, bending, tying and fixing in position rate including cost of all labour, materials, lead, lift, etc. complete.

Supplying and providing water proof treatment over the existing roof slab with polymeric asphalt membrane sheet (4kg/cm2) constituting 7 layers with thermo fusible HM HDFE film one at top and other of bottom layer of this polymeric mix 1 layer of fibre glass tissue, 2 layers of polymeric mix on the top and bottom of 90 microns HM HDPE film, cracks on roof slab to be filled with cement based filter, laying of PAM sheets over a coating of 90/15 hot blown bitumen with 100mm over lap sealed by LPG flame torch further coated with oxides bitumen 90/15 and finally coated with aluminium coating and also extra attention should be given in roof / drain curve portion as per instruction of site Engineer including cost of all labour,lead,lift,T& P etc. complete.

Supplying and fixing of rain water down fall pipe (4Kg/cm2) using approved quality PVC pipe of160mm dia including cost of specials, all other materials required, labour, lead, lift, etc., complete.

Providing two coats of Acrylic distemper for inner walls of first class quality paint approved colour including cost of all materials, scaffolding charges, labours, lead, lift, etc. complete.

Providing two coats with snowcem for outer walls of first class quality paint & approved colour including cost of all materials, scaffolding charges, labours, lead, lift, etc. complete.

Painting two coats with ready mixed enamel paint for the old steel surface including cost of all materials, scaffolding charges, thorough cleaning of surface, labours, lead,lift, etc. complete.

M.VELLATHURAI (BID ID -1147934)