DAY TO DAY MAINTENANCE FOR 10 BERTH INCLUDING GALLERIES, COY JETTY, N 14A JETTY AND CONNECTED WORKS AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM

Amount

Taking down cement plaster on brick / concrete surfaces raking out joints locking for key, scrubbing down with water etc. complete all as specified and directed.

M&L for polymer modified plaster in CM 1:6, 15mm thick on fair faces of brick / concrete surfaces of walls, finished even and smooth without using extra cement and using Nitobond SBR at the rate of 4% of weight of cement complete all as specified and directed. Note:- SBR shall be measured and paid separately

M&L for polymer modified plastering in CM 1:3, 10mm thick on fair faces of concrete surfaces of ceilings finished even and smooth without using extra cement and using Nitobond SBR at the rate of 4% of weight of cement complete all as specified and directed. Note:- SBR shall be measured and paid separately

Supply only SBR chemical for mixing in polymer modified plastering complete all as specified and directed.

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 providing shear connectors and anchoring : Drilling 12mm dia holes upto depth of 100mm and fix 10mm dia TMT bars L shaped anchor rods as shear connectors in defective concrete area of the slab, column, beams etc. or any other structural member as the case may be. Clean the same using water and make sure that there is no fine particle present in the hole. Mix the base and hardener of the polyester resin Fosroc Lokfix or techno commercially equivalent or make as approved by GE with the spatula thoroughly. Fill the drilled and cleaned holes to a minimum depth of 3/4th 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 all as specified and directed.

M&L for removing and cleaning of existing peeled off portions of RCC walls / columns / ceilings of galleries, sea side facia walls, cope point chambers etc. including chipping, wire brushing and making good the corroded / rusted reinforcement with new reinforcement for binding reinforcement as required to existing reinforcement by welding / tying with mild steel wire (annealed) not less than 0.9 mm dia and gunniting the area with minimum pressure of 5 Kg/cm2 to an average thickness of 40 mm in CM (1:2) and finish the surfaces fair and even complete all as specified and directed. Note:- Supply only reinforcement and welded wire fabric will be measured and paid separately.

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)

Supply only welded steel wire fabric fixed to RCC wall/ceiling with necessary fixing arrangement weight exc 2 kg/sqm butt not exc 4 Kg/Sqm 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 application of polymer modified reinstatement mortar 40mm 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.

Dismantling of mild steel work or wrought iron of any description in any position complete all as specified and directed.

M&L for structural steel framed work such as angle, channel, grills, gratings etc with ends of bars, shouldered and / as riveted or forged into spikes for ladders framed balusters, walk ways, railings and similar works conforming to Fe-290, Gde E-165 all as in supporting structure of duct 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 for rolled mild steel chequred plates confirming to Fe-290, Gde E-165 welded, riveted, bolted attachment to supporting structure of duct covers complete all as specified and directed.

M&L for framed work such as grills, gratings, etc. with ends of bars shouldered and / or riveted or forged into spikes, framed guard bars, barred iron doors, ladders, framed balusters, nosing angles, walk ways, MS ladder, railing and similar work conforming to Fe-290.Gde E -165 complete all as specified and directed.

M&L painting of new steel surfaces of any description over 10cm width or girth with two coats of coal tar epoxy paint over a coat of zinc chromate primer complete all as specified and directed.

M&L for cleaning of oil spilled flooring surfaces of jetties with soap water and fresh water jet, pressurized application to get clean surfaces prior to the application of traffic guard renewal coat on the flooring of jetties complete all as specified and directed.

M&L for application of renewal coat of two component wearing coat, Traffic guard Wearing coarse of Fosroc make or make approved by GE mixed with mechanical mixer and applied on the anti-skid surface by using sponge based epoxy roller and allow it to dry for 16-24 hours complete all as specified and directed.

M&L for preparation of existing sea face wall surface of dry / oil / damp by means of mechanical grinding to achieve a rough, coherent substrate having an excellent anchor profile removing all the loose material, rust, dirt etc., clean and dry the surface by using vaccuming equipment, water jet and compressed air. If required surface shall be lightly grit blasting or detergent washed to get PH value neutrality complete all as specified and directed.

M&L for providing two coats of carbonation resistant film chemical "Deck gaurd S" of M/s FOSROC or make approved by GE not less than 150 micron (dry film) per coat over treated area / plaster complete including a coat of "Deck gaurd S primer or make approved by GE" of 150 microns complete all as specified and directed.

M&L for complete removal of existing finishes from the steel surfaces of bollard base & head and applying two coats of coal tar epoxy paint over a coat of zinc chromate 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 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.

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 05 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 outside Naval Dockyard all as specified and directed.

M&L for two coat 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 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.

Note : The following items are to be executed in the gallaries 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.

BHASKARA INFRA (BID ID -3181620)

TANEESH CONSTRUCTIONS (BID ID -3180528)

sai ganesh enterprises (BID ID -3181472)

bhavani constructions (BID ID -3180933)

venkata sai constructions (BID ID -3181613)

RAGHU RAMA PANDA (BID ID -3180763)

aswitha engineering works (BID ID -3181971)

SREE VIGNESWARA CONSTRUCTIONS (BID ID -3181636)