REPAIR TO ROOF PROJECTION, BALCONY, CHAJJA AND OTHER MISC WORKS POCKET NO. 1 TO 4 UNDER AGE BR-I AT JAISALMER MIL STN

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.

Dismantling wrought iron or mild steel work of any description not otherwise provided forcomplete 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 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.

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 .

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.

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

Tender Application Note :- (i) From serial No. 01 to 15 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.

MARUDHARA CONSTRUCTION COMPANY (BID ID -3211370)

G S BHADU (BID ID -3214860)