REPAIR TO WALL, DRAINS AND OTHER STRUCTURAL REPAIR WORK IN POCKET NO. 01 AT MIL STN JAISALLMER

Amount

M&L for MS props erecting for temporary supports to the structural members like beams, slabs etc. to relieve the load on the members during breaking of damaged concrete, removal guniting, excavation or any dismantling work as per the instruction of Engineer in-charge. These supports shall be provided either in the form of props or trestles fabricated using structural steel as per the site requirements. Note :- The temporary supports/ structure, steel PROPS etc, shall be used at site for arrangement of support system shall be take back by the Contractor after requsite period of strengthening of members / strructure or completion of repair work as directed by Engineer-in-charge.

M&L for Chipping of slab/columns/ beams/chajjas /parapet /roof projection/ balcony/ staircase and removing loose mortar with chisel hammer without much impact on concrete surface, clean the surface by sand blasting the surface using river sand with minimum of 6 kg pressure at the nozzle or air blow by electric pressure blower by mechanical compressor, cleaning the exposed reinforcement with wire brushes etc and disposal of debris for all lead and lifts complete all as specified and directed by Engineer-in-charge. Note :- Scaffolding/ temporary support structure required to support the members / structure during strengthening shall be measured and paid under Ser item No.1.

M&L for Cleaning & applying rust remover (Sika rustoff100)) in two coats over rusted reinforcement surface and providing anti corrosive coating with two component epoxy based zinc rich primer/Rust passivation Inhibitor coat at the rate of 6-8 sq. mtr/ltr not less than 50 microns dft with Sika friazinc R or equivalent to reinforcement surface as per manufacturer’s instructions including all scaffolding, machinery, tools tackles and clearing of debris complete all as specified and directed by Engineer-in-charge.

Supply and fixing Embedded Sacrificial Galvanic Anode for corrosion protection of reinforcement in concrete at 500mm x500mm grid to maon reinforcement as per specification. Sacrifical galvanic anodes should have atleast a 5 year track record and pass 500 hours salt sprey test as per ASTM B418 Type II zinc alloy complete all as specified and directed by Engineer-in-charge.

M&L Mild steel TMT 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 complete all as specified and directed by Engineer-in-charge. Note : Additional Reinforcement: Check the diameter of the existing rebars and if the diameter is less than 30% of the original diameter, provide additional reinforcement. Cut 12mm dia bars as main reinforcement to the required length with proper development length. Tie them to the prefixed shear connectors so that the additional rebar acts monolithically with the existing ones and core concrete.

M&L Mild steel TMT bars 5mm dia and over upto and including 10mm dia in stirrups, spacers and binders , 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 complete all as specified and directed by Engineer-in-charge. Note : Additional Reinforcement: In the case of the shear reinforcement also, if the diameter of the rebars are reduced, provide 8mm dia stirrups in the form of 2 "U" shaped bars. Tie them properly so that it has a tight contact with the main bars.

M&L for Shear Connectors by drilling 12mm dia holes up to a depth of 75mm maximum and fixing 8mm dia L shaped anchor rods as shear connectors at every 300mm c/c on the surfaces of the columns/beams or any other structural member as the case may be. Clean the same using air or blower and make sure that there are no fine particles present in the hole and filled the holes with one or two component styrene free vinylester resin anchor or two components, styrene & cement free epoxy- acrylate fixing and anchoring compound. At this stage push the shear connector gently in to the hole and finish the excess resin which comes out of the hole and allow the shear connectors not to be disturbed for Minimum 20 minutes complete all as specified and directed by Engineer-in-charge. Note : Reinforcement shall be paid separately under item ser no 5 above.

M&L for hard drawn steel wire fabric n exc 4Kg/Sqm cut to lengths, bent to shape required and tying with and including mild steel wire (annealed) not less than 0.9mm in dia supplied and fixed in reinforcement complete all as specified and directed by Engineer-in-charge.

S&F of new steel or rebars by drilling holes with 10 mm to 20mm dia and 100 to 200mm deep as per IS code of 10D formula and filling the holes after inserting of reinforcement dia 8 to 16mm for anchoring at ends/shear connector and filled the holes with one or two component styrene free vinylester resin anchor or two components, styrene & cement free epoxy- acrylate fixing and anchoring compound (having the technical parameters mentioned in material specifications) using standard sealant applicator gun after drilling holes of required diameter at required locations, for holding / fixing / placing in position the steel mesh reinforcement at desired level/ stretching complete all as specified and directed by Engineer-in-charge. Note :- Steel/reinforcement shall be measured and paid separately.

M&L for providing leak proof shuttering in any position cut to length and providing including runners supports as per manufacturer’s instructions and including all necessary scaffolding, machinery, tools tackles and men materials complete all as specified and directed by Engineer-in-charge.

M&L for rendering 15 mm thick on concrete surface in cement mortar 1:4 including water proofing compound and finished even & smooth without using extra cement complete all as specified & directed. Note : Supply only WPC will be measured and paid separately.

M&L for rendering 20 mm thick on concrete surface, roof top surfaces in cement mortar 1:4 including water proofing compound and finished even & smooth without using extra cement complete all as specified & directed by Engineer-in-charge . Note : Supply only WPC will be measured and paid separately.

Supply only liquid integral waterproofing compound @ 100ml/per 50kg cement used complete all as specified & directed by Engineer-in-charge .

M&L for applying to the damaged concrete portion of slab/columns/beams/chajjas/parapet /roof projection/balcony/staircase with single component, fiber reinforced, dual shrinkage- compensated thixotropic, cementitious patch repair mortar Sika monotop 122F (having the technical parameters mentioned in material specifications) capable of applying up to 20-25mm thick in double layer initially by hand and finishing with troweled carefully compacting the same around the rebar and finishing to bring it in line with existing concrete surface with an average specified thickness complete all as specified & directed by Engineer-in-charge .

M&L for applying bond coat on the prepared old surface of concrete/ masonry to receive micro concrete with two coats of Sika-Latex Super SBR or equivalent make of brand & as per manufacturer specifications. Laying of reinstatement polymer mortar or micro concrete shall be completed within the overlay time of bonding coat. This bond coat act as bonding agent between old and new concrete complete all as specified & directed by Engineer-in-charge .

M&L for applying injection grouting through the nozzles, Drilling the holes of 12mm dia up to 100mm deep and fixing of nozzle of 10mm with using Bostik NO.3 hardener chemicals. Inject the polymer based cement grout Bostik NSPGC grout with cement to RCC wall/ceiling in adequate pressure and seal the nozzle complete as per manufacturer instruction complete all as specified & directed by Engineer-in-charge .

M&L for the surfaces which are to receive the coating or treatment, must be free from oil, laitance, grease, wax, dirt or any other form of foreign material adhering on it before the waterproofing job started. Dust free the surface, including removing of existing treatment/ old felt / loose plaster / concrete etc. and repair with polymer mortar by adding bonding agent (SBR). Repairing of slab, parapet wall junction, cracks and other large blowholes by open in “V” shapes & filling by polymer mortar or putty followed by fiber mash tape with SBR in conjunction with cement complete all as specified & directed by Engineer-in-charge .

M & L for water proofing treatment on roofs of slabs by complete removal/taking down of existing treatement, by applying acrylic based polymer modified cementitious elastomeric flexible composite coating system consisting of applying: First coat applying with Bostik TAPECRETE-P151 or equivalent mixed with neat fresh cement in the ratio of 1:1 by weight after dust free and moist the surface. Laying second layer of Fiber glass cloth of 45 GSM when the first layer is still green. Overlaps of joints of fiber cloth should not be less than 10 cm. Applying final layer of cementitious elastomeric flexible composite coating system. The whole terrace so finished shall be flooded with water for a minimum period of 24 hours for curing and for final test. “All above operations to be done in order by the manufacturer's authorised applicator only complete all as specified & directed by Engineer-in-charge .

M & L For applying of polyurethane based tar extended seamless elastomeric protective coating system, conforming to ASTM C-836-03 and ASTM C 898-09 ideally suited for water proofing of roof, walls and foundation Master seal HLM5000. The single component solvent based polyurethane compound CORCHEM 2P recommended to be used as a primer before application of coating complete all as specified & directed by Engineer-in-charge .

BONDING COAT: Providing, mixing and applying bonding coat of approved adhesive on chipped portion of RCC roof as per specifications and direction of Engineer-In-charge complete in all respect. SBR Polymer (@10% of cement weight) modified cementitious bond coat @ 2.2 kg cement per sqm of surface area mixed with specified proportion of approved polymer complete all as specified & directed by Engineer-in-charge .

M&L for prepration of new surfaces and applying two coats of distempering with distemper oil emulsion complete all as specified and directed by Engineer-in-charge.

Demolition of unreinforced cement Concrete of any description and in any position not otherwise specifically provided for complete all as specified and directed by Engineer-in-charge.

M&L for PCC (1:2:4) B-0 (using 12.5 mm graded stone aggregate) as in levelling padding course over RCC roof surface including rounded or chamferred on edges etc., with approved water proofing compound all as per manufacturer's instructuions on the roof surface to achieve requisite slope all as specified and directed. (Note :- Supply only water proofing compound shall be measured & paid separately).

Dismantling floor, hearth or wall tiling including cement mortar bedding (but not backing), removing serviceable tiles to store and rubbish off the premises complete all as specified and directed by Engineer-in-charge.

M&L for ceramic tiles exterior grade 300 x 300 x 10mm set and jointed in neat cement slurry and pointed in coloured cement to match all as specified and roughening of exc concrete surfaces complete all as specified and directed by Engineer-in-charge.

M&L for glazed ceramic coloured tiles 450x300x7mm thick (Jointless) in vertical surfaces etc set and jointed in neat cement slurry and pointed in white or coloured cement to match laid over and including 10mm thick backing coat in CM (1:4) complete all as specified and directed by the Engineer in charge.

M&L non skid ceramic coloured tiles 7 to 8 mm thick (square/rectangular) area of each tile exceeding 0.18 sqm but not exceeding 0.38 sqm, in floors etc. set and jointed in neat cement slurry and pointed in white or coloured cement to match with the colour of tiles laid over and including 15mm thick screed bed or bedding layer in cement mortar (1:6) complete all as specified and directed by the Engineer-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 articles etc complete all as specified and directed by the Engineer-in-charge.

M&L for squared rubble walling, Jodhpur type, brought upto courses, well bonded, bedded and solidly hearted, built in cement mortar (1:6) complete all as specified & directed by Engineer-in-charge.

M&L for squared rubble walling, Jodhpur type, brought upto courses, well bonded, bedded and solidly hearted, built in cement mortar (1:6) but except stone complete all as specified & directed by Engineer-in-charge. Note :- Serviceable stone obtained from demolition shall be used.

Extra over stone walling for hammer dressing to face stones with maximum depression on face from a straight edge not exceeding 20mm & dressing face beds and joints as specified to squared rubble walling Jodhpur type brought up to courses complete all as specified & directed by Engineer-in-charge.

M&L for keyed pointing in cement mortar (1:4) to squared rubble masonry, Jodhpur type, coursed or un coursed all as specified & directed by Engineer-in-charge.

M&L for precast cement concrete (1:3:6) type C-1 (using 20mm graded stone aggregate) as in block masonry with solid blocks exceeding 10cm width and setting in cement mortar (1:6) including demolition of existing precast cement concrete block masonry wall built in cement mortar complete all as specified & directed by Engineer-in-charge.

Material and labour for 15 mm thick rendering in cement mortar 1:6 on fair faces brick work /Stone Masonry or concrete surfaces finished even and smooth without using extra cement complete all as specified & directed by Engineer-in-charge.

M&L for preparation of newly plastered surfaces and applying two coats of cement based paint over a coat of alkali resistant paint complete all as specified & directed by Engineer-in-charge.

Extra for forming fair finished channel or drain 30cm inner girth in cement concrete using extra cement including mitred/stopped ends, forms mould etc, complete all as specified & directed by Engineer-in-charge.

Taking down cement plaster on brick or stone wall surfaces, etc including raking out joints, hacking for key, scrubbing down with water complete all as specified & directed by Engineer-in-charge.

Material and labour for 05 mm thick rendering in ceiling in cement mortar 1:3 on fair faces of brick work or concrete surfaces finished even and smooth without using extra cement complete all as specified & directed by Engineer-in-charge.

M&L for preparation of newly plastered ceiling surfaces and applying three coat of white wash on plastered surface complete all as specified & directed by Engineer-in-charge.

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

M&L for 100 mm thick cement concrete (1:4:8) type D-2 using 40 mm graded stone aggregate as in sub base of flooring/ hard standing path & finishing the surface even & fair without using extra cement all as specified & directed.

M&L for 25mm thick PCC (1:2:4) type B-0 using 12.5mm graded stone aggregate as in floors & finishing the surface even & fair without using extra cement all as specified & directed by Engineer-in-charge.

M&L Machine pressed precast concrete interlocking paver block any shape and size confirming to IS 15658-2006 of 60 mm thickness, M-35 Grade with grey cement and pigment laid over and including 25mm thick sand cushioning complete all as specified & directed by Engineer-in-charge. Note :- (i) Pattern of interlocking tile to be rubber moulded or equivalent as approved by GE. (ii) Rate quoted by the contractor shall deemed inclusive of PCC (1:2:4) type B-1 (using 20 mm graded stone aggregate) packing and finished even and fair to the sides of pavement.

Tender Application Note :- (i) From serial No. 01 to 21 for the structural rapair and strengthening and rehabilitation and roof treatment shall be applied by the company’s authorized applicator firm only. (ii) Contractor have to get prior approval of applicator or authorized agency by submitting its authorization letter to this office for approval prior to commencement of work. Department will conduct an official varification from manufacturer of its authorised agency. (iii) Submission of 10 year warranty certificate for structural repair and roof waterproofing treatment work over roof is mandatory after completion of work. (iv) The cost of Scaffolding work required at certain places is including in the respective items catered for repairs itself. No extra shall be paid for the same.

KHUSBU CONSTRUCTION COMPANY (BID ID -3183697)

SHIVA CONSTRUCTION COMPANY (BID ID -3186992)

M/S R.K. Builders & Developer (BID ID -3187915)