for Repair and Conservation of Bangli and Other Associated Structures

Providing labour for carefully removing existing weathered, damaged, or loose plaster from the surface of walls/structure at all heights and levels, including raking out joints, cleaning the exposed surface thoroughly of dust, loose mortar, laitance, vegetation, and other foreign materials by brushing and washing, and preparing the surface to receive new plaster, scaffolding for the work and disposing debris 100m from the site.

Providing and applying 20 mm thick traditional lime plaster in three coats over prepared masonry/structural surfaces, using matured fat lime putty, sand, surkhi, and marble dust, incorporating traditional organic admixtures, complete in all respects as per conservation specifications. First Coat (Scratch/Base Coat): Applying 10 mm thick base coat in lime mortar of proportion 1:1.5:1.5 (lime:sand:surkhi) using coarse sand, well compacted and finished rough with suitable scratching to provide a mechanical key for the subsequent coat. Second Coat (Brown/Intermediate Coat): Applying 8 mm thick intermediate coat in lime mortar of proportion 1:2:1 (lime:sand:surkhi), properly levelled and finished to receive the final coat. Third Coat (Finish Coat): Applying 2–5 mm thick finishing coat in lime mortar of proportion 1:1 (lime:marble dust) using fine materials, finished to a smooth and even surface as specified. The lime mortar shall be prepared using traditional organic admixtures, including Jaggery (gur), Bael fruit pulp, Fenugreek (methi), Natural fibres (jute/coconut), Pulses (where specified). These shall be incorporated in appropriate proportions to enhance workability, cohesion, crack resistance, and durability, as per traditional conservation practices. All materials, labour (including skilled heritage masons), mixing, application, curing, complete scaffolding, tools and plants (T&P), and all incidental works necessary to complete the plastering work and as directed by the Engineer-in-Charge. Lime shall be properly slaked and matured (lime putty) prior to use. Each coat shall be applied with adequate curing and surface preparation before application of the next coat. Surfaces shall be cleaned, wetted, and properly keyed, final surface shall be true to line, level, and plumb.

Providing labour for carefully removing loose, cracked bulged or structurally unsound masonry from the wall portions and stacking the usable material for reconstruction at all heights and levels, including raking out joints, removing deteriorated material without disturbing sound portions of the original fabric and cleaning the exposed surface thoroughly of dust, loose mortar, vegetation, salts and other foreign materials by brushing and preparing the surface in connection for subsequent repair rebuilding in matching masonry, complete scaffolding for the work, disposing debris 100m from the site and conservation as directed by Engineer-in-Charge.

Provision for labor and materials for rebuilding of wall masonry in approved as per original, in place of deteriorated masonry at all heights and levels, including dressing of stones to required shapes and sizes, laying in proper courses with through stones and bonding stones, maintaining alignment, levels and plumb and ensuring proper interlocking of masonry, including preparation of lime mortar in specified proportion (1:1) (lime:surkhi:sand), using matured lime putty, sand and approved traditional additives where required, filling joints, where necessary, curing and finishing to match the existing historic fabric, in connection with conservation and reconstruction works associated with the proposed works, complete as per direction of Engineer-in-Charge.

Carefully dismantling the decayed or damaged limestone flooring/lime concrete flooring at designated locations within the bangli at Diu, including sorting and stacking the useful materials, without damaging the original heritage work. The rate will include all labour, tools, plants, lead and lift, complete scaffolding required for the work, and disposal of unserviceable debris up to a lead distance of 4.0 km via manual conveyance, complete as per the specifications and instructions of Engineer-in-Charge.

Providing and laying lime concrete in the base flooring, using a design mix ratio of 1:2:4 (1 part lime : 2 parts coarse sand : 4 parts graded brick aggregate of 20 mm nominal size). The scope of work includes machine mixing, laying in uniform layers, compaction, consolidation to the required slope and level, and controlled curing for a minimum specified period. Rate shall be inclusive of all materials, lead and lift (conveyance), specialized labor, tools, plant, and incidental charges necessary to complete the work as per engineering specifications.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering – All work up to plinth level: 1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources).

40mm thick fine dressed stone flooring work laid over 20mm thick (average) cement mortar 1:5 (1 cement : 5 coarse sand) including pointing with cement mortar 1:2 (1 white cement : 2 stone dust) with an admixture of pigment matching the stone shade.