REPAIR TO FLEXIBLE RIGID SURFACES OF RUNWAY INCLUDING APPLICATION OF PME ETC AT AFS JODHPUR

Material and Labour Chipping and/or neatly Cutting of existing loose concrete at cracks on Runway/Taxi track/ pavement by using diamond cutter. Cutting of cracked portion shall not be less than 100 mm wide and 45 mm deep. Cleaning the dirt and all loose material fanned with air blower and air blasting the cleaned surface applying proprietary primer on surfaces to obtained tack and finally filling in Elastomeric Concrete, (Mix shall be prepared as per manufacturer) to obtained a true surface and finally tooling the set surface with hand tools complete all as specified and directed. Note :- (i) The rate shall be include for providing masking tape at joints and formwork required if any at spalled joints edges. (ii) The quoted rate deemed to be included for making good to disturbed joint filling around the area where material is applied. (iii) All material shall only be procured directly from manufacturer.

Material and Labour Cutting existing loose patches / spalled edges of concrete pavement in square / rectangular/ triangular shape to a depth not less than 25mm removing debris out side MD land sweeping the patches with broom, cleaning with compressed air and applying epoxy resin mortar (proportion as specified) incl necessary form work for sides of joints, sprinkle , a thin layer of dust free fine sand (QUARTS SAND 10 No) and applying a coat on top of surface with epoxy resin primer @ 0.45 Kg/Sqm and finally filling the joints with sealing compound complete all as spd and as directed by Engr-in-Charge (Sealing of joint shall be measured under respective item separately).

M&L for repair to potholes/patches on runway operating surface up to 100mm deep including cutting of existing flexible concrete surface in vertical to making the potholes in square/rectangle shape & size. Remove debris outside MD land and cleaning the dust with air blower, the cleaned and dry surface making good by applying cold emulsion and filled with instant road repairing bituminous premix in hot condition including well rolled and compacted with 8 to 12 tonne power roller to required camber and gradient including necessary arrangement for working in night conditions and all required T&Ps complete all as specified and directed.

M&L for raking out sealing compound from existing expansion joints of dimension 25 mm to 30 mm wide and 45 mm deep, removing the debris from site by sweeping the concrete surface with brooms, cleaning with compressed air, treating sides and bottom of the joints with primer as per manufacturer's directions and filled with preformed closed cell polyethylene backup rod/strip of 25-32 mm dia, sealing with pitch free polyurethane grey sealant (minimum depth of sealant above backup rod shall be 10 mm) conforming to BS-5212 (Type FB) and applying masking tape on edges of joints to prevent accidental spillage of sealant and removing the masking tape after application of sealant complete all as specified and directed.

Ditto all as per item No 4 above but construction/dummy joints of dimension 16 to 24 mm wide and 40 mm deep and backup rod/strip of 16-25 mm complete all as specified and directed.

Ditto all as per item No 4 above but construction/dummy joints of dimension 10 to 15 mm wide and 30 mm deep and backup rod/strip of 13-18 mm complete all as specified and directed. Note for Srl item No 4 to 6 :- Incase of any variation in width or depth of joint, the same is deemed to be included in quoted rates by the contractor as in Sch 'A'/BOQ items as above. The contractor shall not be entitled for any extra claim on this account.

M&L for cutting out flexible surface from existing joints of dimension 12mm wide and 25 mm deep, removing the debris from site by sweeping wire brushing, cleaning and applying a coat of bitumen primer to the sides and bottom of the joints and sealing with PU bitumen based sealant including backup rod conforming to IS 1834-1984, complete all as specified and directed.

M&L for clearing/cutting bushes, scrubs, grass, vegitation from side/berms/shoulders of Runway/PTT/Taxi/Dispersal and adjoining area by manual / mechanical means (by using jungle jim or petrol grass cutter machine in adequate numbers) as per site requirment including transport for removing all the debries out side MoD land complete all as specified and as directed.

Demolition of cement concrete (unreinforced) in ground floors and pavings not exceeding 15 cm thickness (below or above ground level) complete all as specified & directed by the Engineer-in-Charge.

Removing the demolished material or debries out side MoD land complete all as specified & directed by the Engineer-in-Charge.

M&L for cement concrete 1:2:4 type B2 (using 40 mm graded aggragate) in foundation, filling and mass concrete complete all as specified and as directed

M&L for cement concrete 1:4:8 type D2 (using 40mm graded crushed stone aggregate) in foundation, filling and mass concrete complete all as specified and as directed by the Engineer-in-Charge.

Fixed in repair for 80mm thick factory made chamfered edge cement concrete paver block of M-30 grade with approved colour, design & pattern as in footpath, parks, lawns, drive ways or light traffic parking etc., of required strength, thickness & size/ shape, made by table vibratory method using PU mould, laid in required colour & pattern over and including 50mm thick compacted bed of coarse sand, compacting and proper embedding/ laying of inter locking paver blocks into the sand bedding layer through vibratory co mpaction by using plate vibrator, filling the joints with fine sand and cutting of paver block as per required size and pattern, finishing and sweeping extra sand; complete

Demolition of Reinforced Cement Concrete of any description and in any position not otherwise specifically provided for, separation of serviceable materials from the unserviceable, stacking the serviceable materials within 100 M and disposal of unserviceable materials, debris and rubbish to a distance not exceeding 100 M complete all as specified and as directed by the Engr-in - Charge.

M & L for RCC (Desgin Mix M-30) using 20 mm grade stone aggregate in Slabs supported on walls,beams and columns in floors,roofs, landings, conies,canopies, deck slabs and in shelves and the like etc complete all as specified and directed by the Engr-in - Charge.

M&L Mild steel TMT bars 10mm dia & over,cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends & binding with & including mild steel wire (annealed) not less than 0.9mmdia or securing with clips quality complete all as specified and as directed by the Engr-in - Charge.

M&L fo Formwork to soffits of suspended slabs such as roof slabs, floor slabs, landings and similar work; not exceeding 200mm thick (Horizontal or sloping) Rough finished surfaces of concrete complete all as specified and as directed by the Engr-in - Charge.

Demolition of Brickwork or stone/boulder masonry, built in cement mortar including all quoins, arches, pillars,etc, but excluding ashlar facings, dressed stonework and precast concrete precast concrete block walling complete all as specified and as directed.

M&L for squared rubble walling, Jodhpur type, brought up to courses, well bonded, bedded and solidly hearted, built in CM 1:4 complete all as specified and as directed by Engr-in-Charge.

All as per item No. 19 above but except stone complete all as specified and as directed by Engr-in-Charge . Note:- Old stones obtained from demolition shall be reused under this item.

M&L Rendering 15mm thick on fair faces of stone work or concrete surfaces in CM (1:4) and finishing the surface even and smooth complete all as specified and as directed by the Engr-in - Charge.

M&L for cleaning the surface by brushing with wire brushes for removing caked mud etc, sweeping with compressor air blower to remove all loose dust and dirt etc/taking out dust/ existing material with compressed air and making the surface free from dust, drying the surface and applying Two coats of polymeric modified emulsion (PME) by using self propelled emulsion distribution uniformly or towed emulsion pressure sprayer , equipped for spraying the PME uniformly and mopping the total undiluted PME @ 1.00 litre per sqm in two coats in ratio 1:1 (PME: water) and ensure uniform finish of total area complete all as specified and directed. Note: The tenderer shall take into consideration the following points while quoting rate for the above item:- (i) No price adjustment shall be applicable if excess quantity of polymer modified emulsion (PME) shall be used, depending upon condition of existing flexible surface. (ii) Special care shall be taken to fill gaps/cracks up to 6mm wide with 2.36 mm size coarse sand mixed with PME as per manufacturers instructins and quoted rate shall be included for same. Note for all items The work will be carried out as per user requirement from 1830 hrs to 0600 Hrs. The deployment of labour and T&P arrangement on the Runway shall be intimated to the contractor lby 0800 Hrs each day in the moring. The contractor has to provide necessary arrangement such as lights etc and quote the rate accordingly for considering late working hours at night. Nothing extra will be paid on this account.