SPL REPAIRS TO OVERHEAD TANKS (P-54, P-214 W, P-361, P-380, P-381, P-382, P-384) AT INS SHIVAJI LONAVLA

Amount

Excavating in trenches, n exc 1.5m wide and n exc 1.5m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5m in depth and getting out

Removing excavated material n exc. 50m and depositing where directed at a level n exc. 1.5m above the starting point

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm.

Providing and fixing double scaffolding system (cup lock type) on the exterior side of building/structure, up to 30 meter 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 meter 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.

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

Propping and Supporting the structural members and its adjoining areas with steel props (adjustable as required), bracings, steel timber runners etc. to relieve the structural member of the required load coming over it as per the standard practice and approved by Engineer-in-charge complete.

Demolitin of reinforced cement concrete as in roofs, floors (other than ground floors), beams, staircases, landing, chajjas and similar suspended work at any height.

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 Engineerin-charge.

Disposal of building rubbish / malba / similar unserviceable, dismantled 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 lift involved.

Chipping of 50mm average thickness 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.

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.

Cleaning of reinforcement 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 upto 12 mm diameter

Ditto all as per item No.12 above but bars above 12mm diameter

Providing and inserting 12mm dia galvanised steel injection nipple in honey comb area and along crack line including drilling of holes of required diameter (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..

Providing and injecting stirrer mixed Acrylic Polymer of approved make @ 2% of weight of cement used) modified Cement slurry made with non shrink compound in concrete/RCC work 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 Engineerin-Charge. (The payment shall be made on the basis of actual weight of approved grout injected.)

Ditto all as per item No.15 above but Epoxy injection grout in concrete/RCC work of approved make. (The payment shall be made on the basis of actual weight of approved grout injected.)

Providing, mixing and applying bonding coat of Epoxy bonding adhesive having coverage 2.20 sqm/kg of approved make adhesive on chipped portion of RCC as per specifications and direction of Engineer-In-charge complete in all respect.

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 but excluding the cost of reinforcement, all complete as per direction of Engineer-In-Charge. Upto and including 20 mm dia.

S & F TMT steel bars 10mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips all as specified and directed.

Providing and laying SBR Polymer modified 50mm thick in Grade M 30 (Design mix) with cement content not less than 330 kg per cum (or approved make @ minimum 2% by wt. of cement used) plain/reinforced concrete jacket for the structural members e.g. columns, pillars, piers, beams etc with concrete having the specified minimum characteristic compressive strength [with ordinary portland cement, coarse sand and graded stone aggregate of 10mm maximum size in proportion as per design criteria] with specified average thickness all-round existing core of RCC member at any height. Note: Rates shall be for finished surface area of concrete and shall include the cost of making holes in existing RCC slab, if required, for pouring concrete in shuttering mould of jacket and appropriate approved Super-Plasticiser for rendering concrete as flowable self compacting and SBR polymer but shall exclude cost of reinforcement, bond coat, Shear Keys, centering and shuttering, strutting, propping etc (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).

Ditto all as per item no.20 above but 100mm thick in grade M 30 (Design Mix) with cement content not less than 330 kg per cum.

Shotcreting R.C.C. columns, beams and slabs etc. in layers with 50mm thick in Design mix M 30 Grade with cement content not less than 330 kg per cum design mix concrete having the specified minimum characteristic compressive strength [with ordinary portland cement, coarse sand and graded stone aggregate of 10 mm maximum size in proportion as per design criteria] including the cost of centering and shuttering at edges and corners etc. as directed by Engineer-in-Charge. Note: Rates shall include the providing necessary ground wires etc. The levelling gauges, if used, shall be paid. 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.

Ditto all as per item no.22 above but 75 mm thick in Design mix M 30 Grade with cement content not less than 330 kg per cum

Providing and applying integral crystalline slurry of hydrophilic in nature for waterproofing treatment to the RCC structures like water tanks, roof slabs, podiums, reservoir, sewage & water treatment plant, tunnels/ subway and bridge deck etc., prepared by mixing in the ratio of 5 : 2 (5 parts integral crystalline slurry : 2 parts water) for vertical surfaces and 3 : 1 (3 parts integral crystalline slurry : 1 part water) for horizontal surfaces and applying the same from negative (internal) side with the help of synthetic fiber brush. The material shall meet the requirements as specified in ACI-212-3R-2010 i.e by reducing permeability of concrete by more than 90% compared with control concrete as per DIN 1048 and resistant to 16 bar hydrostatic pressure on negative side. The crystalline slurry shall be capable of self-healing of cracks up to a width of 0.50mm. The work shall be carried out all complete as per specification and the direction of the engineer-in-charge. The product performance shall carry guaranteed for 10 years against any leakage. For vertical surface two coats @0.70 kg per sqm per coat

Ditto all as per item no.24 above but For horizontal surface one coat @1.10 kg per sqm.

M & L for Reinforced cement concrete (M 30) Design mix in Foundations, including rafts, footings, foundation beams; plinth beams; bases for columns, etc.; basement slabs, under-reamed piles and mass concrete

M &L for Reinforced cement concrete (M 30)Design mix in Beams, cantilevers, bressummers, lintels over 1.5m span at any height.

M &L for Reinforced cement concrete (M 30) Design mix in Columns, pillars, piers, posts and struts at any height.

M &L for Formwork to sides of concrete foundations, footings, bases of columns, raft and raft beams, sides and soffits (if any) of foundation and plinth beams; and similar work; vertical or to batter of any height.

M & L for Formwork to sides and soffits of floor or roof beams, beam haunch ings, girders, bressummers, lintels, cantilevers, shelves including sup- ports, overhangs, etc. also splays between floors and beams, etc at any height.

M&L for Formwork to sides of pillars, posts, struts, piers, columns and stanchions of any height.

S&F of Structural steel, rolled section such as joist, beam, channel, angle, tee, in available lengths

M&L for Making plinth protection 50mm thick of cement concrete 1:3:6 (1 cemen: 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) over 75mm thick bed of dry brick ballast 40 mm nominal size, well rammed and consolidated and grouted with fine sand, including necessary excavation, levelling & dressing & finishing the top smooth.

M&L for Painting with black anti corrosive bitumastic paint of approved brand & manufacture to give an even shade. One or more coat on old work

Providing and fixing hand rail of approved size by welding etc. to steel ladder railing, balcony railing, staircase railing and similar works,including applying priming coat of approved steel primer. M.S. tube

M&L for repairs to existing rising, delivery and overflow mains of any number and any dia for each tank including cleaning replacement of necessary fittings clamps, bolts, fixtures, welding, drilling and jointing upto any height and making all operational all as directed by Engr-in-Charge.