Supply of materials and outsourcing of labours for the work of MW(Con) for Structural Conservation of Ranai Lukai at Navratnagarh, Distt. Gumla

Amount

Supply of materials and outsourcing of labours -(As per CPWD specifications 2009 as well as approved by the Site Incharge.)

Erection and dismantling of double scaffolding system in and around the monument upto 25 metre height, above ground level, including additional rows of scaffolding in stepped manner as per requirement of site, made with bamboo, placed 1.5 metre centre to centre, horizontal & vertical joint with bamboo, coir string and staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for execution of conservation works 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 including cost of materials, labours and T&P etc. complete as per directions and approval of Engineer-in-charge.

Taking out the damaged, decayed and worn out brick structure very slowly and carefully layer by layer without damaging the adjacent structural members including stacking of serviceable materials and disposal of debris ,cost of labours, T&P etc. complete as per directions and approval of Engineer-in-charge.

Restoration of damaged, decayed and worn out of brick structure members 40% Old and 60% New using lime surkhi mortar in 1:1:1 ( 1 lime putty :1 surkhi :1 sand ) with epoxy mortar and pinning with S.S. Anchors up to the desired depth as per the site condition and matching with existing ancient texture of structures very slowly and carefully including cost of labours, materials, T&P, curing etc complete as per directions and approval of Engineer-in-charge.

Resetting of damaged, decayed worn out and missing stone structure members with lime surkhi mortar in 1:1:1 ( 1 lime putty :1 surkhi :1 sand ) matching with existing ancient texture of structures very slowly and carefully including cost of labours, materials, T&P ,curing etc complete as per directions and approval of Engineer-in-charge.

Taking out existing weathered / Damaged lime concrete from floor manual mean using small hand hammer and chisel only without damaging the structure including disposal of material within 200mtrs lead including cost of labours and T&P etc. complete as per directions and approval of Engineer-in-charge.

Laying 10 cm thick lime concrete using 50 % mortar of proportion 1:1:1 ( 1 lime putty :1 surkhi :1 sand ) with 20 mm nominal size brick aggregate including ramming, maintaining proper gradient, cost of materials, labours and T&P etc. complete as per directions and approval of Engineer-in-charge.

Recess pointing to the ancient brick structures using combination mortar 1:1:1 (1 lime putty : 1 surkhi : 1 sand) very slowly and carefully to match with the existing structure after raking out joints including curing, cost of materials, labours and T&P etc. complete as per directions and approval of Engineer-in-charge.

Grouting, saturating and consolidating the inner core of the brick masonry after proper cleaning the surface through the both gravitational and mechanical force with the help of liquid lime mortar in proportion 1:1:1:1 ( 1 lime putty :1 surkhi :1 sand: 1 brick aggregate 10mm to 20mm ) including stitching the cracks, cost of materials, labours and T&P etc. complete as per directions and approval of Engineer-in-charge.

Removal of debris/malwa such as dead lime plaster, concrete, stone block etc. from work spot to suitable dumping place by mechanical load including loading & unloading , carriage and cleaning of area , cost of labours and T&P etc. complete as per directions and approval of Engineer-in-charge.

Providing and fixing of temporary support system at critical locations of all around the structure including centering and shuttering ,strutting, propping etc. and removal of form for all heights etc. complete as per directions and approval of Engineer-in-charge.

Arbind Kumar

CHANDRA BHUSHAN SINGH