344/26-27-REPAIR WORK OF BUDS SCHOOL

26.28.3: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 as per direction of Engineer-In-Charge25 mm average thickness

OD163784/2026-2027:Rust remover/Rust Converter Cleaning of rust /scales/corrosion from reinforcement bars should be carried out using acid based rust remover, Reebakleens RR of Fosroc or equivalent, or using alkalibased rust converters such as Feovert of Krishna Conchem. The materials is to be applied to the rusted metal bar, using brush and leaving it to dry for 30min. washing the surface with fresh water as required to exposed reinforcement bar at all height, including all material, labours, tools, temporary supports for structures, electricity, plant and machineries complete as per detail specification and as directed by engineer-in –charge and/or consultant. The Concrete surface area containing the cleaned rebars shall be measured for payment.

OD163790/2026-2027:Anti corrosive treatment to steel Providing and applying inhibition coats/system to exposed reinforcement bar also new bars, after cleaning, removing scales and rust completely as specified in 1.4, two component inhibitor Nitozinc primer std. of Fosroc or Master Emmaco P 130 of BASF or equivalent having specific gravity of 1.75 and solid content 57(+/- 3).Adhesive bond strenth1.5n/mm2, 40 microns DFT per coat as approved by Enginner- in – charge and/or consultant shall be used as per manufacturers specification in two coats at all height, including all material, labour,tools, temporary support for structures, electricity plant and machineries, necessary surface preparation and necessary protection after and during work. The concrete surface area containing the rebars where the treatment is carried out shall be considered for measurement.

14.1.1: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 within 50 meters lead:With cement mortar 1:4 ( 1 cement : fine sand)

13.43.1:Applying one coat of water thinnable cement primer of approved brand and manufacture on wall surface:Water thinnable cement primer

13.80:Providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete.

14.72:Providing and fixing double scaffolding system (cup lock type) on the exterior side, upto seven story hight made with 40 mm dia. M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staricase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after. The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required location with essential safety features for the workmen etc. complete as per directions and approval of Engineer- in Charge. The elevational area of the scaffolding shall be measured for payment purpose. The payment will be made once irrespective of duration of scaffolding. Note:- This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done .

50.18.7.3.2:Providing and fixing PVC pipes, fittings including fixing the pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step PVC solvent cement and testing of joints complete as per direction of Engineer-in-Charge 25 mm dia 10Kgf/ cm2- Internal work- Exposed on wall

8.31:Providing and fixing Ist quality ceramic glazed wall tiles conforming to IS: 15622 (thickness to be specified by the manufacturer), of approved make, in all colours, shades except burgundy, bottle green, black of any size as approved by Engineer-in- Charge, in skirting, risers of steps and dados, over 12 mm thick bed of cement mortar 1:3 (1 cement : 3 coarse sand) and jointing with grey cement slurry @ 3.3kg per sqm, including pointing in white cement mixed with pigment of matching shade complete.