GENERAL-PSM 2025-26 - Rectification works-Rectification works to Peechi dam and providing water level reading scale-General Civil Work

Rectification works

OD15861/2025-2026:Surface preparation of dry or oil bound distemper/cement paint/rust by scrapping, sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete

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)

13.50.3:Applying priming coat:With ready mixed red oxide zinc chromate primer of approved brand and manufacture on steel galvanised iron /steel works

OD37712/2025-2026:Total station surveying and marking of points from the nearest BM i/c all T&P, labour, incidentals etc.

13.52.1:Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer's specifications including appropriate priming coat, preparation of surface, etc. complete.On steel work

13.52.2:Finishing with Epoxy paint (two or more coats) at all locations prepared and applied as per manufacturer's specifications including appropriate priming coat, preparation of surface, etc. complete.On concrete work

13.61.1:Painting with synthetic enamel paint of approved brand and manufacture to give an even shade:Two or more coats on new work

OD37591/2025-2026:Providing and fixing of retro-reflectorized scale with atleast 10 years warranty manufactured as per IRC:67 High Intensity Micro-Prismatic (Type XI) Grade Sheeting fixed over aluminium sheeting, aluminium composite material sheeting 1.5 mm thick(or nearest available size) with suitable supporting frame made of SS316 flats of size 50x10mm(or nearest approved size) and connecting them using SS316 threaded M12 rods/bolts(or nearest approved size) drilled into masonry using a suitable bit so as to get a minimum hole diameter of 14 mm and 150 mm minimum embedment, cleaning the hole by oil-free air blowing and anchoring the assembly using epoxy/polyster chemical anchor and approved washers and nuts ensuring a minimum stand-off of 15 mm from the wall i/c of all incidentals including erecting the scaffolding as per the site condition. The scale assembly shall be fabricated in separate 2-meter sections, with no allowance for dimensional deviation. The Scale should be fixed based on the reduced level at each 1 m vertical interval or lesser as required at site of the dam body after surveying total station (to be paid for separately)as per the direction of engineer in charge.

OD15833/2025-2026:Lettering with enamel paint of approved brand and manufacture in all sizes and at all elevations as directed by engineer in charge

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 .

26.37:Cleaning of exposed concrete surface of sticking material including loose and foreign material by sand blasting with coarse sand followed by and including cleaning with oil free air blast as per direction of Engineer in charge.

26.29.2: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 as per direction of Engineer-In-Charge.Bars above 12 mm diameter

26.39:Providing and inserting 12mm dia galvanised steel injection nipple in honey comb area and along crack line including drilling of holes of required diametre (20mm to 30mm) up to depth from 30mm to 80mm at required spacing and making the hole & crack dust free by blowing compressed air, sealing the distance between injection nipple with adhesive chemical of approved make and allow it to cure complete as per direction of Engineer-In-Charge.

26.35.3:Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey-comb area of concrete/masonry by suitable gun/pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-in-Charge. (The payment shall be made on the basis of actual weight of approved grout injected.)Epoxy injection grout in concrete/RCC work of approved make

26.31.2: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

26.40:Providing and 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 as approved by Engineer-in-charge.

26.32.3: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).50 mm average thickness in 3 layers.

OD15839/2025-2026:Removing calcination deposits in the gallery drains, walls and floors by grinding and washing out loose materials, debris etc. by pressure washing from concrete surfaces and rubble masonry joints by manual/mechanical means and smoothening the surface as directed by departmental officers at site

24.1:Raking out joints of stone masonry surface to the required width and depth, with due care and precaution, by mechanical / manual means, including preparing and cleaning the surface for re pointing / refilling of joints, including disposal of rubbish to the dumping ground with in 50 metre lead.

13.33.2:Pointing on stone work with cement mortar 1:3 ( 1 cement : 3 fine sand):Raised and cut pointing