eTENDER FOR EXTERNAL STRUCTURAL AND CIVIL REPAIRS, EXTERNAL PAINTING AND RECONSTRUCTION OF COMPOUND WALL OF NABARD OFFICERS QUARTERS, BAZULLAH ROAD QUARTERS, TNAGAR, CHENNAI

Dismantling the existing brick or stone masonry work in cement mortar under 3m high including carefully clearing the debris etc.,complete.

Dismantling R.C.C.works,carefully clearing away the debris as directed during execution. The dismantling of concrete as per PWD guidelines are to be adopted wherein a part part of the concrete only is to be dismantled and the remaining part of the concrete has to be retained structurally safe. Pruning of trees and its roots to be done wherever necessary.

Earth work excavation for foundation in all kinds soils in varying depths including dismantling any masonry or roots met within foundation and shoring with planks, baling water if necessary and filling the sides with excavated earth including clearing and levelling site etc., complete with an initial lead of 10m.and lift of 2m

Providing and constructing hand-driven cast-in-situ concrete piles of 300 mm diameter using M25 grade concrete, by hand boring/driving, including centering, shuttering if required, placing, compacting and curing of concrete, cutting off pile head to required level, and all incidental works, but excluding steel reinforcement.

Steel reinforcement for R.C.C. work ready to use “cut and bend” rebars of approved make from factory/workshop to construction site including placing in position and binding all complete. Thermo-Mechanically Treated bars of grade Fe-550D or more of make mentioned in tender document.

Supplying and erecting shuttering including necessary supports for plane surface in foundation and basement for RCC column footings,pintol blocks, plinth beam, staircase steps, critical steps, critical piers,etc.,using mild steel sheets of size 90x60cm and 10 gauge stiffened with welded mild steel angles of size25x25x3mm for boarding laid over silver Oak (country wood) joists of size 10x6.5cm spaced at about 90cm centre to centre and supported by casuarina props of 10 to 13cm dia spaced at 75cm centre to centre etc.,complete.

Providing and laying in position ,Standardised Concrete Mix M-25 Grade in accordance with IS :456-2000,using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 325 kg/m3 and maximum water cement ration of 0.55, including admixture (Plasticiser/Superplasticier) in recommended proportions as per IS:9103 to accelerate ,retard setting of concrete, improve workability without impairing strength and durability with about (5.0 cum) 7730 kg of 20 mm machine crushed stone jelly and with about (3.3 cum) 5156 kg of 10-12mm machine crushed stone jelly and with about (4.79 cum) 7670 kg of sand, nut excluding cost of reinforcement grill and fabricating charges,centering and shuttering and also including laying,vibrating with mechanical vibrators,finishing,curing,etc and providing complying with standard specification and as directed by the departmental officers

Autoclaved Cellular Aerated Concrete (AAC) Blocks work using 600x200x200 mm size in cement mortar 1:5 (1 cement and 4 parts of crushed stone sand) with self curing AAC joint mortar 2 to 3 mm thick including curing, etc.,complete

Plastering with cement mortar 1:4 (1 cement and 4 P sand)12mm thick including curing, etc., complete

Chip and remove the damaged portion of the sunshade and the OTS beam. Wherever required grind and slope the surface. Given a bonding coat using DR. FIXIT SUPER LATEX or its equivalent. Protective plaster the surface with evening by applying with CM 1:4, 20mm thick admixed with integral WPC admixture DR.FIXIT PIDI PROOF LW or its equivalent @ 200ml bag of cement on with neat finishing with cure for 3 days. Additionally, waterproof the surface by giving 1 coat of primer followed by 1st coat of roof seal classic along with the mesh. After a drying time of 4-6 hours follow up with the 2nd and 3rd coats