REPAIR/REPLACEMENT OF NON RETURNING VALVE FROM BOLLARD NO 91 TO 128 AND SEA FACE WALL STEEL GRILL WINDOW FROM BOLLARD NO 101 TO 128 AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM

Amount

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

All as per item No. 1.00 above, but 50mm bore . Note for item Nos. 1 & 2 :- The unit rate quoted shall be deemed to be included for dismantling of RCC and making good the disturbed portion of concrete with PCC (1: 1 1/2:3) type A1 (Using 20mm graded stone aggregate)

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 / debries from the galleries outside Naval Dockyard all as directed.

S&F for aluminium alloy grills, made out of flat of (size 50 x 6mm) and angle of (50 x 50 x 6mm) in sea face wall, including takng down existing grill/window and making good the disturbed portion of concrete with PCC (1:1 1/2 :3) type A1 (using 20mm graded stone aggregate) 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 complete all as specified and directed.

M&L for application of bonding coat on the prepared old concrete surfaces of the RCC Members with two component epoxy based bonding agent Nitobond AR standard of Fosroc make or make approved by GE for the surfaces of the concrete to be rehabilated by Rendroc RG (above 50mm thick), Rendroc DS40 (upto 40mm thick), Rendroc SP 40 (upto 30mm thick), Rendroc S2 (upto 20mm thick) of repair old demolished concrete member 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" of 150 microns complete all as specified and directed.

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

AARAV POWER CONTROLS

SPAAN Infratech

P VENKATAPATHI RAJU

SREE HANUMAN ENTERPRISES

CIVILEC ENGINEERING WORKS

sagar infra