M and R to Barvi Water Works...Strengthening and Special Repairs to HSR -II and III at Jambhul.

Amount

Sub Estiamte 1 :- Strengthening and special repairs to HSR No. 2 & 3

Providing and fixing double scaffolding system (cup lock type) on the exterior side of building/structure, including additional rows of scaffolding in stepped manner as per requirement of site, made with 40mm dia M.S. tube, placed 1.5 metre centre to centre, horizontal & vertical tubes joint with cup & lock system with M.S. Tubes, M.S. tube challis, M.S. clamps and staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for execution of work of cleaning and/ or pointing and/ or applying chemical and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connecting with the building etc, wherever required, if feasible, for inspection of work at required locations with essential safety features for the workmen etc., complete as per directions and approval of Engineer-in-charge. Note:- (1) The elevational area of the scaffolding shall be measured for payment purpose. (2) The payment will be made once only for execution of all items for such works.

Chipping of all loose and Spalling of concrete to bottom of slab, beams etc.(wherever required), cleaning of reinforcement, carrying out thorough sand blasting, application of anti-corrosive zinc rich epoxy primer to exposed reinforcement including cost of material, labour, equipment, tools, scaffolding etc. complete.

Corrosion protection of unexposed old reinforcement on non-spalled concrete by Insertion of sustained release Corrosion inhibiting caplets like Powrthrow which protect both anodic & cathodic sites and reduces Corrosion potential Ecorr by minimum 80 mV in conductive medium, by drilling 20-22 mm dia holes into the concrete at a depth of 30-40 mm and inserts to be filled by epoxy sealant EPCO-1010. Caplets shall inhibit corrosion inhibition efficiency of 98% (when added 0.03 % by weight) against control sample evaluated by Tafel polarization method. Depth of penetration for effective corrosion protection shall be 120mm & film formation of 20 Microns as evaluated by CSIR-CECRI Karaikudi.Spacing of Powrthrow shall be- a) For RCC Columns- 1 Units in a single drilled hole at a spacing of 1m c/c from two opposite faces in staggered fashion b) For RCC Beams- 1 Units in a single drilled hole at a spacing of 1m c/c from two opposite faces in staggered fashion C) RCC Slab- 4 Units in a single drilled hole in 1 sqm area in a grid pattern

Providing and applying one pack bonding coat between concrete members like RCC slabs, columns, beams, chajjas, pardis etc and cement mortar plaster using Hack Aid Plast of approved make & approved by Engineer in charge. Clean the concrete surface thoroughly to remove dust, dirt, grime, deshuttering oils and rub down to a clean surface. Apply Hack Aid Plast of approved make & approved by Engineer in charge by spray on the entire concrete surface. Provide a lean cement - sand dash coat over the same. Allow the dash coat to set for around 24 hours. Further plastering as per specifications can continue.

Making up lost section of concrete/ mortar with thixotropic repair mortar is one component thixotropic dual shrinkage compensated fibre r/f formulation for structural members build up section by hand packing as per manufactures specification applied by mean of hand gloves / by expert applicator. The rehabilitees surface should be free from air gaps, avoids sld be in line with existing required line. Line with existing surface includes curing, cleaning complete area etc complete. Work sld be carried out with all safety measures like helmets, safety belts and adequate labour insurance under qualified supervisor etc complete. Material should be used as per following specification- a) Compressive strength should be ~65MPa for 7 days and ~85MPa for 28 days according to EN12190 and C70 according to EN 13892-2. b) Modulus Elasticity in compression should be >20GPa according to EN 13412. c) Tensile Strength in Flexure should be ~8,5MPa for 7 days and ~11MPa for 28 days according to EN 12190 and F10 according to EN 13892-2. d) Tensile Adhesion Strength should be >2,0MPa according to EN 1542. e) Shrinkage should be ~500m at +20c 65% relative humidity after 28 days according to EN 12617-4. f) Abrasion Resistance should be <6cm3/50cm2 according to EN 13893 and wear resistance should be A6 according to EN13892-3. g) Thermal Compatibility should be >2,0 MPa according to EN 12687-1. h) Capillary absorption should be <0,5 kg.m.h according to EN 13057. i) Water Penetration under Pressure should be 5 mm according to EN 12390-8. h) Carbonation Resistance should be dk< control concrete MC (0,45) according EN 13295-3.

Providing Repairing of honeycombs and minor damages with Polymer Modified Morter including material,labour complete in all respect.

Providing and applying 15 mm thick polymer mortar to load carrying R.C.C member in two layers in proportion of 1:5:15 by weight Polymer of approved quality and make, cement and wash quartz sand with required W.C. ratio for desired consistency and applying and finishing by floating, curing after initial setting time etc. as per manufactures specification etc. complete.

Providing and applying of elastomeric (450%elongation), thermoplastic, fire retardant, coating skin tensile strength 18 to 21 kg/cm2 , antifungal, antibacterial, anticorrosive, graft co-polymer Coating on smooth plastered surface. 100 Micron dyufilm thickness of self bonding with plastered surface and 100 Micron of top cost. For sewage treatment plant (R. C. C. Tank inside coating) and water treatment plant.

Providing water proofing treatment as per IS : 1346-1966 to generally inaccessible sloping Reinforced Cement Concrete Terrace slab with bitumen felts in all positions in five course, consisting of applying cold bitumen primer coat at the rate of 2.5 litre per 10 Sq.m., hot bitumen layer at the rate of 14.50Kilogramper 10 Sq.m. and over the same layer of bitumen felt of type III grade (I) as per IS: 1332-1965 across the slope with 10 cm overlap commencing at lowest level and again applying hot bitumen course at the rate of 14.50Kilogramper 10 Square Metre. and finally spreading over it grit at the rate of 14.50Kilogramper 10 Square Metre. including all lifts, leads and scaffolding whenever necessary complete as directed with four years guarantee on requisite stamp paper etc. complete.

Providing and applying Elastomeric, Anti carbonation, Anti corrosive, UV resistant, Solvent based Pure Aliphatic Acrylate System- MONOPOL 456 on the exterior faces of Buildings Protection against ION penetration, carbonation,UV radiations and wethering effect conforming to ASTM D 4541-02 having Electrochemical impedance of 107 O and achieving dry film thickness of minimum 200 microns in a primer coat followed by two top coats using brush or spray after complete cleaning & removal of oil, grease or loose particles from the surface etc. complete.

Sub Estiamte 2 :- Removal of sludge and construction of compartment wall in HSR II & III at WTP Jambhul.

Providing, constructing coffer dam in river basin / dam storages as per type design including excavation, filling the middle portion with B.C. soil (in gunny bags if required). Providing impervious / semipervious materials on both sides of B.C. soil (in gunny bags if required) including ramming, compacting to the satisfaction of Engineer-in-charge till the completion of work including dismantling coffer dam after completion of works and disposing off the material as directed by the Engineer-in-charge. Note : Pay line maximum. Top width payable shall be 2 Mtr. and maximum payable side slopes shall be 1.5 horizontal to 1 vertical, if the constructed top width of the side slopes are less, then the measurements at actual are payable. Extra top width or flat slopes are not payable. Contractor is free to use ballies, plastic sheets, piles, pipes, CGI sheets for supporting hearting materials instead of impervious/ semi-pervious hearting materials for which no extra payments shall be payable. 30% payment shall be withheld for dismantling of coffer dam. This foot note shall appear in tender condition. (Type section is shown on last page of type design section of CSR).

Removing the sludge from effluent sump or from any other ancillary structure such as screen and grit chambers, by mechanical means or manually for all depths. Lift and lead upto 100 m from the edge of sump or structure including stacking the sludge as directed. Item includes cost of all mechanical equipments, labour, fuel, safety devices, tools and plants. (Rates Excluding GST)

Providing second class Burnt Brick masonry with conventional/ I.S. type bricks in cement mortar 1:6 in superstructure including striking joints, raking out joints, watering and scaffolding etc. Complete

Providing internal / external 20 mm thick Ready Mix plaster confirming to IS:4031(Part-4) 1988 and IS 383-1970 in a single coat using Cement mortar of proportion 1:4 containing special type of polymer additives about 0.4%, to all type of surfaces in all positions including scaffolding and curing complete

AV AND COMPANY (BID ID -6802927)