REPAIR AND MAINTENANCE WORKS OF DIRETORATE BUILDING AT MINES AND GEOLOGY DEPARTMENT UDAIPUR

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge.

Carriage:-Building Rubbish Stone metal (Grit and ballast etc.): 10 Kms

Centering & shuttering with plywood or steel sheets including strutting, propping bracing both ways with steel props and removal of formwork for upto floor five level for :Suspended floors, roofs, landings, staircases, balconies, girders, cantilevers, bands, coping bed plates, anchor blocks, sills, chhajjas, lintel, beam, plinth beam etc.

Providing and fabricating reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding (including cost of binding wire) all complete up to floor five level. :- Thermo-mechanically Treated bars (Conforming of relevent IS code)

Providing and laying in position Ready mix concrete manufactured in fully automatic Batching Plant and transported to site in transit mixer for having continous agitated mixer, manufactured as per approved mix design of specified grade of RCC work including pumping of R.M.C. from transit mixer to site of laying , exculding the cost of centering, shuttering and reinforcement with all lead and lift including cost of admixtures in recommended portion as per IS 9103 to accelerate/ retard setting of concrete, improve workability without impairing strength and durability as per direction of Engineer in charge. Add extra for providing richer mixes respectively at all floor levels:Providing M-25 grade concrete by using cement as per codal provision instead of M-20 grade design mix.

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 m lead With cement mortar 1 :4 ( 1 cement : 4 coarse sand)

Repair to damaged RCC slabs, beams and columns etc for strengthening with cement mortar 1 : 2 in following steps :- (i)Choping losse and cracked concrete to required depth, cleaning the exposed surface of steel and concrete with wire brush and sand papering , cleaning of concrete surface with water as necessary and getting dried. (ii)Applying Epoxy primer on the exposed steel bars.(iii)Applying Epoxy hardener and resin mix (as per manufectured's specification) on concrete and steel bars with brush.(iv)Speading dry cement mortar 1 : 2 mix over epoxy treated wet surface and allow it to dry for one day.(v)Plastering the surface with cement sand mortar 1 : 3 upto depth of 30mm complete.(vi)Cure the plastered surface for 15 days, All work including scaffolding etc. complete in all respect.

Providing and laying six courses water proofing treatment with bitumen felt over roofs consisting of first, third and fifth courses of blown or/and residual bitumen applied hot at 1.45, 1.20 and 1.70 Kg. per Sqm. of area respectively second and fourth courses of roofing felt type 2 grade-I (fiber base self finished bitumen felt) and sixth and final course of stone grit 6mm and down size or pea sized gravel spread at 8cu.dm per sqm including preparation of surface excluding grading complete confirming to IS : 1322 and 1346.

Grading roof for water proofing treatment with water proffing compound :Cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)

Providing gola 75x75 mm in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 10mm and down gauge) including finishing with cement mortar 1:3 (1 cement : 3 fine sand) as per standard design :