Retrofitting by guniting method of special repair and rehabilitation work of external portion of Micro Wave Building at Main T E Campus, Ranchi

Amount

SH: MASONRY WORK

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 5.0 in superstructure above plinth level up to floor V level in all shapes and sizes in :

Cement mortar 1:6 (1 cement : 6 coarse sand)

Half brick masonry with common burnt clay F.P.S. (non modular) bricks of class designation 5.0 in superstructure above plinth level up to floor V level.

Cement mortar 1:4 (1 cement :4 coarse sand)

Extra for providing and placing in position 2 Nos. 6mm dia. M.S. bars at every third course of half brick masonry.

SH: FINISHING

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.

SH: REPAIRS TO BUILDING

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40mm dia. M.S. tube 1.5m 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. staircase 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 locations 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.

Providing and fixing single scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40mm dia. M.S. tube 1.5m centre to centre horizontal & vertical tubes joining with cup & lock system with M.S. tubes and M.S. clamps 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 locations 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.

SH: DISMANTLING & DEMOLISHING

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Extra for cutting reinforcement bars manually/ by mechanical means in R.C.C. or R.B. work (Payment shall be made on the cross sectional area of R.C.C. or R.B. work) as per direction of Engineer-in-charge.

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.

75 mm average thickness

50 mm average thickness

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.

Providing, erecting, maintaining and removing temporary protective screens made out of specified fabric with all necessary fixing arrangement to ensure that it remains in position for the work duration as required by the Engineer-in-charge.

Wooven PVC cloth

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.

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.

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).

Plastering in cement mortar 1:3 (1 cement:3 fine sand) of 6 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)

Extra for mixing Recron 3S of reliance or equivalent in Cement mortar plaster of all thickness in the proportion of 1 packet (125 gm) in 50 Kg of cement complete as directed by E-I-C.

Credit for old dismantled tor steel.