Central Scientific Instruments Organisation Tender

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 and directions of Engineer-in-charge. Note: Measurement and payment: The pre-measurement 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 crushing strength at the end of 28 days to be not less than 30 N/Sqmm2) 25 mm average thickness in 2 layers. Including with fixing hard drawn steel wire fabric of size 75 x25 mm mesh or other suitable size wire mesh to be fixed & firmly anchored to the concrete surface by means of “L” shaped mild steel shear key welded with existing reinforcement including the cost of materials, labour, tool & plants.Including Chipping loose concrte,cleaning of rust from Steel bars,applying slury eproxy. (excluding the cost of epoxy) make :- Sika /Pidilite The rate includes cost of material,labour,scaffolding and all incidnetal charges

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : Two coats on old work Make:- Asian/Nerolac/Dulux. The rate includes cost of material,labour,scaffolding and all incidnetal charges

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq.meters 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, all complete as per direction of Engineer-in-Charge. With cement mortar 1:4 (1cement: 4 coarse sand) including with Epoxy Grout The rate includes cost of material,labour,scaffolding and all incidnetal charges

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within CSIO. The rate includes cost of material,labour,scaffolding and all incidnetal charges

Providing and fixing soil, waste and vent pipes : 100 mm dia Sand cast iron S&S pipe as per IS: 1729

Providing and fixing M.S. holder-bat clamps of approved design to Sand Cast iron/cast iron (spun) pipe embedded in and including cement concrete blocks 10x10x10 cm of 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), including cost of cutting holes and making good the walls etc. : For 100 mm dia pipe

Providing and fixing plain bend of required degree. 100 mm dia Sand cast iron S&S as per IS - 1729 make :- DIC/NECO/HIF

Providing and fixing collar : 100 mm Sand cast iron S&S as per IS - 1729 make :- DIC/NECO/HIF

Providing lead caulked joints to sand cast iron/centrifugally cast (spun) iron pipes and fittings of diameter : 100 mm

Cutting holes up to 30x30 cm in walls including making good the same:With common burnt clay F.P.S. (non modular) bricks

Cutting holes up to 15x15 cm in R.C.C. Walls/floors and roofs for passing drain pipe etc. and repairing the hole after insertion of drain pipe etc. with cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), including finishing complete so as to make it leak proof.

Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make The rate includes cost of material,labour,scaffolding and all incidnetal charges make :- Sika /Pidilite

Plugging the C.I Pipe for dia 75 mm to 100 mm with Concetre 1:2:4 as per direction of engineer in- incharge