DAY TO DAY MAINTENANCE FOR CLEANING OF GALLERIES, REMOVING OF SEA WEEDS, VEGETATION GROWTH AND PERIODICALS TO THE GALLERIES AT N-24 TO N-26 AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM

Amount

Taking down cement plaster on brick walls, racking out joints locking for key, scrubbing down with water etc., complete all as specified and directed.

M&L for rendering 15 mm thick plaster in CM (1:4) using SBR latex emulsion @ 4% by weight of cement on fair face of brick or concrete surfaces of walls/cillings finished even and smooth without using extra cement complete all as specified and directed. Make of SBR emulsion/latex: Sika, Fosroc, STP,Dr Sunanada, BASF, star coatings Note: The unit rate quoted bu the contractor is inclusive of SBR Latex.

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 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.

Supply only deformed or twisted reinforcement bar of any dia 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

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.

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 Naval Dockyard Visakhapatnam shall be measured and paid separately.

Disposal of collected garbage / debris from the galleries outside Naval Dockyard all as specified and directed.

Removing the accumulated / deposited sea 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 jetty area complete all as specified and directed

M&L for two coat of white wash on surface to ceilings and walls of new and old surface of gallaries including surface preparation complete all as specified and directed

Periodical maintenance to removal of vegetation growth on the jetties /wharfs/dock/building wall irrespective of heights and location of grown plants with required tools to cut plants and cleaning of debris, any other waste/garbage complete all as specified and directed

sai ganesh enterprises (BID ID -3144720)

SATYAMEGHA ENGINEERS (BID ID -3146221)

venkata sai constructions (BID ID -3145332)

M/s Sai Venkata Durga Constructions (BID ID -3147238)

GVR CONSTRUCTIONS (BID ID -3147136)

JAI BHARAT BUILDERS (BID ID -3146780)

P VENKATAPATHI RAJU (BID ID -3146846)

prasad constructions (BID ID -3147086)

RAGHU RAMA PANDA (BID ID -3147056)