U 400 Tunnel drier building repair works in KMML

UNSKILLED WORKER Unskilled Labour charges for attending unforeseen works

Dismantling old / weak plaster. 'Dismantling old/weak plaster over masonry or skirting, raking out joints and cleaning the surface for plaster including scaffolding upto 4 mtr height,tools and takles and disposal of rubbish to the dumping ground within 1kms lead,at all heights

Chipping unsound/weak concrete with plastering over the weak concrete. Chipping of unsound/weak concrete material with plastering 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, scaffolding upto 4 mtr height, all complete as per direction of Engineer-In-Charge. 50mm average thickness

Chemical Plastering at a level upto approx. +10 m from terrace of the building Providing, mixing and applying chemical plastering by SBR polymer (of approved make) modified Cement mortar in proportion of 1:3 (1 cement: 3 graded coarse sand with SBR polymer 10%-20% by wt. of cement used, as recommended by the manufacture) including priming with slurry coat as per manufacturer specificationsfor a height upto approx. +10m from terrace level as per specifications and directions of Engineer-in-charge including scaffoldings upto 4 mtr height. 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

Cleaning reinforcement from rust 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 including scaffolding upto 4 mtr height. Bars upto 12 mm diameter

Centering and Shuttering Centering and shuttering including strutting, etc. and removal of form for: columns,beams including attached pilasters, butteresses, plinth and string courses etc. including scaffoldings upto 4 mtr height

Applying SBR latex Bonding agent on chipped portion of RCC Providing,mixing and applying bonding coat of approved adhesive on chipped portion of RCC as per specification and direction of Engineer-in-charge complete in all respect. SBR Polymer(@ 10% of cement weight) modified cementitious bond coat @ 2.2kg cement per sqm of surface area mixed with specified proportion of approved polymer including scaffolding upto 4 mtr height etc

Drilling Holes to introduce steel bars Drilling suitable holes in reinforced or plain cement concrete with power driven drill machine to a minimum depth of 100mm upto 200mm in RCC beams, lintels, columns and slabs to introduce steel bars for sunshades/balconies including fixing the steel bars in position using epoxy resin anchor grout of approved make including scaffolding upto 4 m height but excluding the cost of reinforcement, all complete as per direction of Engineer-In-Charge. Upto and including 12mm dia.

Drilling Holes and Fixing Nipples for cement grouting Providing and fixing nipples with approved fixing compound such as Renderoc Plug/Master seal 505/Cera Plug of make M/s Fosroc/BASF/Cera Chem respectively after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement including all scaffolding upto 4 mtr height. (Cement will be supplied by the company)

Injecting of Approved Grout with cement into nipples 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.) Stirrer mixed approved chemical such as cebex 100/Flowcable 50/Cera Expan 250 of make M/s Fosroc/BASF/Cera Chem respectively @ recommended proportion of weight of cement used) modified Cement slurry made with non-shrink compound in concrete/RCC work including scaffoldings upto a height 4 mtr. (Excluding cost of Cement)

Fixing Steel reinforcement Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete .Thermo - Mechanically Treated bars of grade Fe-500D or more (TMT steel bars shall be supplied by company) including scaffolding upto 4 mtr height

SS Welded mesh Fixing departmentally supplied 16 gauge SS welded mesh having size 20x20 mm or nearest size firmly to columns and beams with concrete nails and plate washers at adequate spacing to cover the concrete surface prior to micro concreting at all levels as per the instruction of engineer in charge, including all cost of materials, scaffolding upto height 4 mtr, conveyance, labour etc. complete.

Micro Concrete Providing and applying micro concrete over the chipped and cleaned exposed areahaving sufficient thickness (average 50mm) to receive the same with fluid micro concrete product, such as Renderoc RG/MasterEmaco S 346/Cera microconcrete of M/s Fosroc/BASF/Cera Chem or Similar respectively, with potable water, mixing by heavy duty slow speed electrically operated stirrer after pouring the water in a mixing vessel, mixed material shall be poured through the feed hopper into well positioned form work for the required thickness and all works as per manufactures specifications and as directed by the Engineer in charge, including curing, cost of materials, labour, scaffolding upto a height of 4 mtr, conveyance etc, but excluding cost of form work, bonding agent, reinforcement and SS welded mesh. The work shall be carried by an agency having sufficient experience and should ensure a guarantee of 5years. Only skilled and experienced persons shall be employed for this purpose.

Thixotropic Non Shrink Repair mortar Providing and applying single component fibre reinforced thixotropic non shrink repair mortar such as BASF EMACO S48CT or FOSROC/BOSTIK product for columns, beams, slabs and other structural members with 4 ltrs of potable water per 25kg of product, mixing by heavy-duty, slow speed drill with spiral mixing paddle or a Pan type mixers etc. after pouring the water in a mixing vessel, mixed material shall be applied both by trowel or spray application and finished to get a uniform thickness and finish and all works as per manufactures specifications and as directed by the Engineer in charge, including curing, cost of materials, labour, scaffolding upto a height of 4 mtr, conveyance etc, but excluding cost of form work, bonding agent, reinforcement and SS welded mesh. The work shall be carried by an agency having sufficient experience and should ensure a guarantee of 5years. Only skilled and experienced persons shall be employed for this purpose.

Providing and Fixing Double Scaffolding System 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 . [Delete]

PCC for floor levelling Providing and laying CC 1:1 1/2:3( 1 Cement : 1 1/2 coarse sand : 3 graded stone aggregate of size 12mm to 20mm) to proper gradient lines and levels for screed concrete levelling cource for an average thickness of 65 mm including cost of conveyance, lead, lift of all materials