SPECIAL REPAIRS TO CHAJJAS, FINS, PLINTH PROTECTION AND PARAPET WALLS OF BUILDING NO. P-25B, 25D, 25E AND P-150 AT WECORS, NAVAL DOCKYARD VISAKHAPATNAM UDER GE(I) DM VISAKHAPATNAM

Amount

Taking down cement plaster on brick or concrete wall etc including racking out joint hacking for key, scrubbing down with water etc. complete all as directed

Material & labour for chipping (20mm to 50mm) of existing damaged, crakced, spalled & loose portion of concrete of the RCC members completely till the reinforcement is exposed and sound concrete is observed by using mechanical means and manual chisels and further the surface is cleaned with water jet, again clean the surface with blower to remove all loose fine particles present in the surfaces and making good the corrogated reinforcement by providing reinforcement / welded steel wire fabric for strenthening the structure by welding or tying with MS wire (anealled ) not less than 0.90mm dia where required and removing of dust and loose particles complete all as specified and as directed. (Note: Reinforcement / welded steel wire fabric shall be measured and paid seperately as "supply only rate" under respective items in this schedule.

Material & labour applying a coat of Polymer modified cementious bonding coat on the concrete surfaces with one part of Styrene Butadiene Rubber latex emulsion (SBR latex) manufactured by M/s Fosroc chemicals or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch with four parts of water and six parts of cement by weight. Coverage of SBR latex-0.25Ltr / sqm for one coat complete all as specified and directed.

M&L for Pre cast cement concrete type 1:3:6 type C-1 (20mm graded crushed stone aggregate) block masonry with solid blocks exc 10 cm in width and setting in cement mortar 1:4 complete all as specified and as directed.

M&L for rendering 15 mm thick plaster in CM (1:4) using SBR latex emulsion @ 4% by weight of cement on brick or concrete surfaces of walls the surfaces even and smooth without using extra cement complete all as specified and directed. (Note:- Cost of SBR latex emulsion is included in quoted rate)

M&L for preparation of rusted surafaces of steel reinforcement with metal wire brush for cleaning the surfaces free from loose rust and applying of rust remover cum passivator with brush to the rusted reinforcement, and removing rust as flex after 24 hours of application of rust remover with the help of wire brush / sand paper and thoroughly washed the surfaces with the help of water pressure jet and allowing the cleaned surfaces completely to dry completeiy, applyingtwo coats of zinc anti-rust agent as per manufacturer's method of application to reinforcement bar corrosion protection system to old reinforcement of make Fosroc or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch as per manufacturer's instruction complete all as specified and directed.( Area of cleaned reinforcement steel bar shall only be measured for payment).

Supply only welded steel wire fabric exc 3 Kg / Sqm not exceeding 4 Kg/Sqm complete all as specified and as directed.

Supply only deformed or twtisted reinforcement bar of any dia complete all as specified and as directed.

Material & laobur for application of polymer modified reinstatement mortar 20mm thick in isolated places of repair works of RCC members with Rendroc S2 of M/s Fosroc make or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch having a compressive strength of 40 MPa complete all as specified and directed.

Material & labour for providing Shear connectors and Anchoring by drilling 16 mm dia holes up to depth of 100mm in concrete surfaces and fixing 10 mm dia TMT bars L shaped anchor rods as shear connectors by using Lokfix chemical manufactured by Fosroc or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch (Mix of base and hardener of the polyester resin) in defective concrete area of the slab / column / beams / chajjas / lintel etc or any other structural member as per site requirement after cleaning the drilled hole by using water jet and after drying clean the surface with blower to remove all loose & fine particles present in the hole. The Mix of base and hardener of the polyester resin shall be prepared by thorough mixing of base & hardener by the help of spatula. After preparing the mix the holes shall be filled to a minimum depth of 1/3rd of the hole with the prepared polyester resin and the reinforced bar shall be inserted to full depth of hole and extra length of the reinforcement bar shall be bent into the concrete to maintain proper cover to the reinforcement complete.

Material & labour for 40 mm thick gunniting by chemical mortar prepared by Renderoc DS40 manufactured by Fosroc or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch mixed with 6 mm down graded crushed stone aggregate on prepared concrete surfaces complete all as per manufacture's instruction & as directed.. ( Note :- 25 kg Renderoc DS40 mixed with 12.5 kg of 6 mm downgraded crushed stone aggregate shall be mixed)

Material & labour for 20 mm thick gunniting by chemical mortar prepared by Renderoc DS40 manufactured by Fosroc or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch mixed with 6 mm down graded crushed stone aggregate on prepared concrete surfaces complete all as per manufacture's instruction & as directed.. ( Note :- 25 kg Renderoc DS40 mixed with 12.5 kg of 6 mm downgraded crushed stone aggregate shall be mixed)

Demolition of RCC work of any description (reinforcement cut as required to facilitate demolition) complete all as specified and directed.

M&F for fixing injection grouting nozzle of suitable size for Injection grouting for structural cracks with low viscous epoxy resin grouting chemical like Conbextra EP10 manufactured by M/s Fosroc Chemicals or equivalent product manufactured by M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch and grouting by injecting the chemical by using an electrically operated pressure grouting machines until the nipple refuses the grout or the grout comes out from a nearby nipples and after grouting, all the nipples shall be cut and the surface shall be finished to match the nearly surface complete all as per manufacturer's instruction and as directed. (Note :- 1. Work shall be executed as per manufacturer's instruction.2. The chemicals are available in two components - base and the hardener. The components of a pack shall be mixed at a time by mechanical means using a slow speed heavy duty drilling machine fixed with mixing paddles. Part mixing of a pack is not accepted. 3. Cost of grouting chemical is is included in quoted rate. 4. Injecting grouting Chemical shall be low viscosity epoxy based like Conbextra EP10 manufactured by M/s Fosroc Chemicals manufactured by M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch.)

Material & labour cement based Micro-concrete of compresive strength 40 Mpa at 28 days, manufactured by construction chemicals manufacturer like Fosroc brand name RG 40 or equivalent in M/S Sika India Pvt. Ltd. / M / S Choksey Chemicals Pvt. Ltd. / M/S Mapei Const Product India Pvt Ltd. / M/S THermax Ltd / M/S STP / M/S Dr Sunanada / M/S BASF or any other approved manufacturer of E-in-C's branch including necessary form work with steel jack system and steel props to support the form work for palcing & holding of micro concrete as required at site complete all as specified and directed (Note :- 1. Cement based Micro-concrete shall be of pre packed single component, chloride free, sulphate free, non-shrink, free flow, self compacting, ready to use after mixing water in specified proportion of approved quality.to achive high strength, dual shrinkage, compensated. 2, Micro concrete shall be used when thickness of reapir work is within 50 mm to 200 mm. 3 . Form work shall be provided for palcing micro concrete patch reapir as required at site with steel jack sysytem and steel props to support the form work. 4 cost of Form work is included in the quoted rates)

M & L preparation of newly plastered surfaces of walls and applying two coats of exterior emulsion paint (weather coat) over a coat of alkali resistance primer over a coat of wall putty minimun thickness 1.5mm and cutting to smooth surfaces by sand paper complete all as specified and directed.

Demolition of cement concrete (un reinforced) in ground floors and paving n exc 15 cm thickness (below or above ground level) including removal of debris out side from the Dockyard permises complete all as specified a

M&L 75 mm thick cement concrete 1:3:6 Type C2 (using 40 mm graded crushed stone aggregate) in floors (plinth protection) finishing cement concrete surface even and smooth without using extra cement complete all as specified and directed.

M&L for forming Contraction (Dummy) joints 30mm deep x 10mm wide, filled with sealing compound Grade ‘A’ complete all as specified and directed.

M&L cutting chases, pinning in, making good to facings where required and pointing in cement mortar (1:3) to ends or edges of landings, steps cills, sunshades, shelves, lintels etc. in brick walls and cutting chases for concealed water tubing or concealed conduit wiring, etc., and making good, cutting not exc. 10 cm girth complete all as specified & directed.

M&L for Pre-painted Crimp Curved Galvalume aluminium zink coating GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550Mpa as in sunshades of openings (Curved drop surface exc 150mm but n exc 300mm), fixed with self taping screws including chipping of surface upto 50mm projection from wall and levelling of surfaces by applying concrete/cement mortar complete all as specified and directed.

S & F for framed brackets of angles or tees with web and flanges cut to shape, drilled and countersunk for screw, including bending and welding angles, as necessary gusset plates, riveting, etc. not exc 10 kg each brackets, conforming to Fe.290, Gde-E-165 complete all as specified and directed.

M&L for Preparation of new steel surfaces of any descriptions over 10cm in width or girth and applying two coat of synthetic enamel paint over a coat of red oxide/zinc chromite primer complete all as specified and directed.

Dismantling floor hearth or wall tiling including cement mortar bedding (but not backing)and removing the debries outside of the Dockyard premises complete all as specified and directed.

M&L for Coloured Non skid ceramic tiles 600 x 600 x 7 to 8 mm thick as in floors etc. set and jointed in neat cement slurry and pointed in white or coloured cement to match laid over 15mm thick cement mortar (1:6) screed bed complete all as specified and directed.

M&L for Coloured glazed ceramic tiles 300 X 450 X 7 to 8 mm thick in dado set and jointed in neat cement slurry and pointed in coloured cement to match fixed over incl rendering in CM 1:4, 10mm thick complete all as specified.

Taking out PVC (SWR) soil waste and vent pipe of any size including all fittings etc complete all as specified and directed

S&F 160 mm dia PVC (SWR) pipes single, socketed, in any length with rubber ring joints fixed to wall complete all as specified and directed

S&F 110 mm dia PVC (SWR) pipes single, socketed, in any length with rubber ring joints fixed to wall complete all as specified and directed

S&F 160 mm bore PVC (SWR) bends (any radius) with oval access door complete all as specified and directed.

S&F 110 mm bore PVC (SWR) bends (any radius) with oval access door complete all as specified and directed.

Note : The BOQ items are to be executed for multi storied building of three floors height / work shop buildings of similar height and requires double scaffolding to carry out the work. The rates quoted shall be accordingly considered for all the safety gear, scaffolding, height, lead and lift in the items.

M/s Sai Venkata Durga Constructions

sai ganesh enterprises

SRI SIMHADRI COMPANY

RAGHU RAMA PANDA