Retrofitting by guiniting method of special repair and rehabilitation work including painting of Back side of toilet and balance portion of Stair Case in Trainees hostel in ARTTC Campus at Ranchi

Amount

S.H. RCC WORK

Centering and shuttering including strutting, propping etc. and removal of form for :

Columns, Pillars, Piers, Abutments, Posts and Struts

SH: Finishing Work

Finishing walls with Acrylic Smooth exterior paint of required shade :

New work (Two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm).

Finishing walls with Acrylic Smooth exterior paint of required shade :

Old work (One or more coat applied @ 0.90 ltr/10 sqm).

SH: Repairs to building

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)

Providing and fixing double scaffolding system (cup lock type) on the exterior side of building/structure, upto 25 metre height, above ground level, including additional rows of scaffolding in stepped manner as per requirement of site, made with 40mm dia M.S. tube, placed 1.5 metre centre to centre, horizontal & vertical tubes joint with cup & lock system with M.S. Tubes, M.S. tube challis, M.S. clamps and staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for execution of work of cleaning and/ or pointing and/ or applying chemical and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connecting with the building etc, wherever required, if feasible, for inspection of work at required locations with essential safety features for the workmen etc., complete as per directions and approval of Engineer-in-charge. Note :-

(1) The elevational area of the scaffolding shall be measured for payment purpose.

(2) The payment will be made once only for execution of all items for such works.

SH: REPAIR AND REHABILITATION

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-Charge.(work is to be executed upto 20 m heights above G.L).

50 mm average thickness

25 mm average thickness

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.(work is to be executed upto 20 m heights above G.L).

Providing ,mixing and applying SIKA TOP ARMATEC ® 108 or equivalent @ 0.70 Kg/Sqm (Single coat) as approved by Engineer-in-charge and as per manufacturer's specification for anti- corrosive treatment of reinforcement and adjacent concrete (considering 40% of the dismantled concrete surface) all complete as per direction of Engineer-in-charge.(work is to be executed upto 20 m heights above G.L).

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.(work is to be executed upto 20 m heights above G.L).

Epoxy bonding adhesive (Sika high bond or equivalent) having coverage 2.20 sqm/kg of approved make.

Plastering in cement mortar 1:3 (1 cement:3 fine sand) of 12 mm thick admixed with water proofing compound of approved make such as plastocrete super or equivalent confirming to IS 9103-1999,IS 2645-1975 and ASTM C-494-86 Type A @ 0.2% by weight of cement and as per manufacturer specification complete to improve water tightness and workability without increased water content and as per direction of Engineer in Charge. (work is to be executed upto 20 m heights above G.L).

Replacement of sufficiently damaged reinforcements or providing additional reinforcements with the damaged reinforcements by welding etc. including cost of reinforcement (TMT bar of required dia ),mobilization etc. complete as per direction of Engineer-in-Charge. (work is to be executed upto 20 m heights above G.L).

Guiniting the damaged R.C.C. columns, beams and slab after applying a bonding coat when it is taking (cement : coarse sand) = 1:3 and ‘SIGUNIT’ powder or equivalent as approved admixure as Additive set accelerator @ 2% to 4% by weight of cement and SIGUNITE powder: water = 1:4 to 10 (by volume) as per manufacturer’s specification including other cost like mobilization etc. complete . (Bond coat shall be paid separately). (works is to be executed upto 20 m heights above G.L)

Credit for old dismantled tor steel.

Providing & applying micro concrete for badly damaged beam & columns, RCC portion etc.

K C SARDAR (BID ID -767846)