Retrofitting works to the R.C.C members and attending repairs and renovation works to the North block class room at Government Primary School, Melaoduthurai, Neravy Commune in Karaikal.

Amount

Demolishing cement concrete manually / by mechanical means including disposal of material within 50 metres lead - nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Providing and laying rectified ceramic rustic / matt finish floor tiles of size 600x600 mm or more (thickness to be specified by the manufacturer) of 1st quality conforming to IS:15622 of approved make (Somany / Nitco) in all colours shades,laid on 20mm thick cement mortar 1:4 (1 cement : 4 coarse sand) including pointing the joints with white cement and matching pigments etc., complete

Cement concrete flooring 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate) finished with a floating coat of neat cement, including cement slurry, but excluding the cost of nosing of steps etc .complete - 40mm thick with 20mm nominal size stone aggregate

Providing two legged scaffolding using 15 cm diameter blue - gum posts or casurina posts or best quality bamboo - posts of 4m over all length (3.0m height + 0.5 m projection + 0.5 into the ground) the distance between the two rows being 1.25 m and the spacing of posts with 0.5 m overlap on either side and braces to step up and providing a platform with country wood planks of 40mm thick and 1m width etc in a complete form using coir and nails 1 m run (Rate of scaffolding for a height of 3 m and lenghth of 1 m)

Chipping of unsound / weak concrete material from slabs , beams , columns etc. with manual Chisel and / or by standard power driven percussion type or of approved make including tapering of all edges , making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete - 50 mm average thickness

Chipping of unsound / weak concrete material from slabs , beams , columns etc. with manual Chisel and / or by standard power driven percussion type or of approved make including tapering of all edges , making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete - 25 mm average thickness

Cleaning of reinforcement from rust from the reinforcing bars to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry , all complete - Bars above 12mm diameter

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and complete in all respect - Epoxy bonding adhesive having coverage 2.20 sqm /kg of approved make

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and complete in all respect - SBR Polymer (@ 10% of cement weight) modified cementitious bond coat @ 2.2 kg cement per sqm of surface area mixed with specified proportion of approved polymer

Providing, mixing and applying SBR polymer (of approved make) modified Cement mortar in proportion of 1:4 (1 cement : 4 graded coarse sand with polymer minimum 2% by wt.of cement used) as per specifications . Note: Measurement and Payment : The Pre-meaurement of thickness shall be done just after the surface preparation is completed and payment under this item shall be made only after proper wet curing has been done and surface has been satisfactorily evaluated by sounding / tapping with a blunt metal instrument and / or the 75mm size cube crusing strength at the end of 28 days to be not less than 30 N / Sqmm) - 25 mm average thickness in two layers

Providing leak proof centering and shuttering using 25mm thick plywood for damage slab / beam to carrying out micro concreting work including ceiling the gaps if any with renderoc plugging compound and removal of form work.

Laying of Non shrink free flow micro concrete renderoc RG or equivalent in the proportion 1:1 (One renderoc Rg: one graded stone aggregate of 12.5mm and below through the drilled holes till the voids and damaged area are completely filled and set to an average thickness of 50mm as directed by the Engineer-In-Charge.

Steel reinforcement for R.C.C.work including straightening , cutting , bending , placing in position and binding all complete upto plinth level - Thermo -Mechanically treated bars (ISI BRAND OF APPROVED MAKE) Fe - 415 or more

Repairs to plaster of thickness 12mm to 20mm in patches of area 2.5 sq.metres and under including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete including disposal of rubbish to the dumping ground within 50 metres lead - with cement mortar 1:4 (1 cement : 4fine sand)

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead

20mm cement plaster of mix 1:4 (1 cement : 4 coarse sand)

Raking out joints in lime or cement mortar and preparing the surface for repointing or replastering , including disposal of rubbish to the dumping ground within 50 metres lead

Flush pointing with cement mortar 1:3 (1 cement : 3 fine sand) mixed with 2% of integral water proofing compound by weight of cement for flat tile bricks on top of mud phaska - with F.P.S. brick tiles

Removing white or colour wash by scrapping and sand papering and preparing the surface smooth including necessary repairs to scrarches etc.complete

White washing with lime to give an even shade - Old work (two or more coats)

Applying one coat of water thinnable cement primer of approved brand and manufacturer on wall surface - water thinnable cement primer

Wall painting with acrylic emulsion paint of approved brand and manufacturer to give an even shade - Two or more coats on new work

Applying priming coat - with ready mixed pink or grey primer of approved brand and manufacture on wood work (hard and soft wood)

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade - One or more coats on old work

SAKTHIVEL G