Conservation and restoration of city wall daryaganj new delhi

Work

Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish up to a distance of 50 m outside the periphery of the area cleared..

Felling trees of the girth (measured at a height of 1 m above ground level), including cutting of trunks and branches, removing the roots and stacking of serviceable material and disposal of unserviceable material. Beyond 30 cm girth upto and including 60 cm girth

Removal of debris and cleaning of the base of the fallen wall including sorting of serviceable material staking of unsable stone at a designated location and disposal of unserviceable malba from the site to stacking area within a lead of 50 mtr

Demolishing lime concrete manually/ by mechanical means and disposal of material within 50 metres lead as per direction of Engineer- in-charge

Provision for RR and cut stone masonry work, including underpinning in arches, pillars, kangura, walls, etc., executed with lime-surkhi mortar in the proportion of 1:1:1 (1 part lime: 1 part surkhi: 1 part coarse sand), admixed with traditional additives such as gur, belgiri, gum, and sunn, including carriage of all materials and water for a lead of 50 to 200 meters and a lift up to 10 meters.

Provision for core masonry filling with RR stone in wall with lime-surkhi mortar in the proportion of 1:1:1 (1 part lime: 1 part surkhi: 1 part coarse sand), admixed with traditional additives such as gur, belgiri, gum, and sunn, including carriage of all materials and water for a lead of 50 to 200 meters and a lift up to 10 meters

Centering and shuttering including strutting, propping etc. and removal of form for Arches, domes, vaults up to 6 m span

Laying of lime concrete in floors/aprons using brick aggregate of 20–40 mm nominal size, with 50% lime surkhi mortar in the proportion of 1:1:1 (1 part lime: 1 part surkhi: 1 part coarse sand), including thorough ramming, beating, and finishing, admixed with traditional additives such as belgiri, gur, gum, and sunn, and including carriage of all materials within a lead of 50 to 200 meters.

Laying of lime concrete on terrace for water-tightening, using brick aggregate of 10–20 mm nominal size, with 50% lime surkhi mortar in the proportion of 1:1:1 (1 part lime: 1 part surkhi: 1 part coarse sand), including thorough ramming and finishing of the top surface, admixed with traditional additives such as belgiri, gur, gum, and sunn, and including carriage of all materials within a lead of 50 to 200 meters and lift up to 10 meters.