DAY TO DAY MAINTENANCE OF GALLERIES AND SEA FACE WALL AT N-14 TO N-16 AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) DM VISAKHAPATNAM

Amount

M&L for chipping & removal of existing damaged, cracked, spalled & loose portion of concrete of the RCC members completely till the reinforcement is exposed and sound concrete (20mm to 50mm) is observed by using mechanical means and manual chisels and further the surface is jetted with clean water for removal of dust and loose particles and complete all as specified and directed.

M&L for preparation of exposed surafces of rusted steel reinforcement of dia 10mm and above with metal wire brush, cleaning the rusted surfaces free from loose rust and application of rust remover cum passivator painted with brush to the rusted reinforcemnet @ 2.0-2.5Ltr /Sqm surface of steel reinforcement, (Fosroc-Reebaklens RR or make approved by GE) to the surface of existing reinforcement) and removing rust with flex after 24 hours of application of rust remover with the help of wire brush, sand paper and throughly washed with water with the help of pressure jet and allowing it to dry complete all as specified and directed. (Length of reinforcement steel bar shall be measured for payment complete)

M&L aplying a coat of poymer modified cementious bonding coat on the concrete surface with one coat of styrene butadiene rubber latex emulsion (SBR latex) manufactured by M/s Fosroc chemical or equivalent chemical manufactured by Sika india india pvt Ltd/ Choksey chemicalpvt Ltd/ M/s STP/ M/s Dr Sunanada 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 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 make approved by GE having a compressive strength of M40 grade complete all as specified and directed.

M&L for 40mm thick gunniting by chemical mortar prepared by Renderoc DS40 manufactured by FOSROC (25 Kg Renderoc DS40 mixed with 12.5 Kg of 6mm downgraded crushed stone aggregate) or equivalent chemicals manufactured by Sika India Pvt. Ltd./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 on prepared concrete surface complete all as per manufactured instruction & as directed.

Supply only welded steel wire fabric fixed RCC wall/ceiling with necessary fixing arragement exc. 2 Kg/SqM weight not exc. 4 KG/SqM all as specified and directed.

M&L for laying cement based Micro-concrete, Rendroc RG 40 of Fosroc make or make as approved by GE, 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. Formwork shall be provided for placing micro concrete patch repair as required at site with steel jack system and steel props to support the form work in this application of high strength, dual shrinkage, compensated, micro concrete for placing in nominal thickness of more than 50mm for concrete repair with compresive strength of 40 Mpa at 28 days complete all as specified and directed. Note: The qouted rate deemed to be included for formwork / shuttering, if any required.

Dismantling structural steel work of any description including doors, railing, gates, trusses complete all as specified and directed.

S&F for rolled mild steel plain or chequred plates confirming to Fe-290, Gde E-165 welded, riveted, bolted attachment to supporting structure of capstan, duct covers, valve pit access platform and working in a confined area including making good the disturbed portion of concrete surfaces with 1:1 1/2 :3 type A0 using 12.5mm stone aggregate complete all as specified and directed.

S&F structural steel framed work such as angle, channel, I beams, etc cut to shape, including bending and welding angles as necessary confirming to Fe-290, Gde E-165 as in supporting structure of valley gutters, duct covers, platforms (0 to -15m level) and capstan, ladders framed balusters, walk ways, railings, cable duct covers,railtrack nosing, lifting arrengements with pulleys, nosing angle and similar works including making good the disturbed portion of concrete surfaces with 1:1 1/2 :3 type A0 using 12.5mm stone aggregate complete all as specified and directed.

M&L for preparation of new steel surfaces and applying two coats of chlorinated rubber paint over a coat of zinc chrome primer complete all as specified and directed.

Removing the accumulated / deposited sea weeds growth at jetty facia wall / columns / pillars of jetties / berths above sea level and upto the level of 45 cm below the low tide by scrapping either manually or mechanical means and collecting the same on jetty / berth floor and depositing the same outside of Naval Dockyard complete all as specified and directed.

Periodical maintenance for cleaning of cable ducts / galleries on the jetties / wharfs with required tools and plants and cleaning of debris, any other waste / garbage etc., including water accumulated in the ducts / galleries of jetties & wharfs by employing 04 Nos. of Mazdoors for 8 hours / day as per following :- a) Opening of Mild steel / RCC gallery covers of any description, size shape and placing safety cones etc., around the duct / gallery opening on jetty /wharf. b) Entering into the gallery through opening to a depth of appx 2.7m to 3.0m below the jetty / wharf and collection of silt / mud / debris and other foreign materials in the gallery to the nearest manhole of gallery for lifting the same to a height of 2.7m to 3.0m by suitable means to the jetty / wharf surfaces for further disposal. c) Re-positioning of MS / RCC duct covers. d) Loading of garbage so collected from galleries into transport vehicle of suitable capacity. Note: Transport vehicle for disposal of garbage / debris outside of ND(V) shall be measured and paid separately.

Disposal of collected garbage / debris from the galleries Including manpower for loading of garbage into transport vehicle of suitable capacity and disposed into outside Naval Dockyard all as specified and directed.

M&L for two coats of white wash on surfaces of ceiling and wall of new / old surface of gallaries including surface preparation complete all as specified and directed.

M&L for preparation of old painted steel surfaces of any description over 10cm width or girth and applying one coat coal tar epoxy paint complete all as specified and directed. Note : - The work will be carried out in every three months or as per direction of Engineer-in-Charge for enhancing its serviceablity. Every coat / work will be measured and paid separately.

Periodical maintenance for removing of vegetation growth on the jetties / wharfs wall with required tools and plants and cleaning and removing the same outside of Naval Dockyard by employing 05 Nos. of Mazdoors for 8 hours / day complete all as specified and directed.

M&L for preparation of surfaces of vertical concrete surfaces of jetty on sea side wall by mechanical scaryfying for key (partly under sea water during high tide times), removing all loose particles, laitance, oil, greese, sea weed etc., before application of levelling putty complete all as specified and directed.

M&L for application of single component, polymer modified, cementitious mortar of Rendroc FC (M/s Fosroc) or techno commercial equivalent or make as approved by GE in new/old surface imperfections of average thickness 3mm complete all as specified and as directed .

M&L for application of high performance aliphatic acrylate based protective and decorative coating on vertical concrete surfaces of jetty sea face wall with two coats of Deck guard 'S' of Fosroc or make as approved by GE over a coat of Deckguard primer or make as approved by GE complete all as specified and directed.

Supply, fix, install testing and commissioning bith ends flanged 100mm bore CI Epoxy coated non-return valve class PN 1.0 confirming to IS-5312-1(2004) with standard bolts hole, fixing wth nuts, bolts, washers, rubber gasket etc including taking down old one complete all as specified and as directed

Note :- The above items are to be executed in the galleries of the jetties ( restricted work environment). The rates quoted shall be considered for all the safety gear, scaffolding, height, lead and lift in all the items.

S RAMAKRISHNA RAJU (BID ID -3407495)

SATYAMEGHA ENGINEERS (BID ID -3416491)

UNIVERSAL ENTERPRISES (BID ID -3416104)

sai ganesh enterprises (BID ID -3408865)

GVR CONSTRUCTIONS (BID ID -3416524)

venkata sai constructions (BID ID -3408917)

SRI SIMHADRI COMPANY (BID ID -3409245)

Mahamaruti Constructions (BID ID -3416226)

eldi techs (BID ID -3409192)