Conservation and restoration of Sher Shah Gate under Purana Qila

Material and Work

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

Providing and laying lime concrete bed with 20mm to 25mm thick brick blast mixed with 50% lime mortar in ratio of 1:1:1 (1 U/lime ,1 surkhi ,1 Sand )after compacting of loose soil, including beation and ramming for finishing the top surface and adding adhesive material comlete with in 500m lead and lift of approx 5 to 10 m

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.

Provision for underpinning in RR hard stone in superstructure above plinth level with lime mortar (1:1:1) and stone aggregate 20 to 40 mm nominal size for leveling of the coarses of masonry to match the original including supply of all material,T&P and required labour to complete the work upto lead 500 mtr and lift 5 to 10 mtr.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge. In cement mortar

Recessed pointing the R.R. stone masonry in lime surkhi mortar 1:1:1 (1 Lime, 1 Surkhi, B.P. Sand) including racking out the joints, cleaning and washing the joints with adhesive materials such as Gur, Belgiri, Gum including Carriage of Water and Materials within a lead up to 300 M approx.

Providing 50 to 70 mm thick plain/curved lime plaster on walls in 3 coats 1:1:1 (1 lime : 1 surkhi: 1 c.sand) including racking, and washing the joints very carefully including carriage of material from a distance of 500 mt lift/down of 5 to 10 mt."

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after. The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and approval of Engineer in-charge. The elevational area of the scaffolding shall be measured for payment purpose. The payment will be made once irrespective of duration of scaffolding.Note: This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done.

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil.