Request for proposal for Conservation and Restoration of Ghaziabad Municipal Corporation Towanhall, Ghaziabad

A. CONSERVATION WORK De-vegetation of small plants, bushes and rank vegetation from masonry/structures including including hing/gur/lime formulation as specified by the Architect or other patented chemical biocide treatment such as biocide (iso propylamine salt of glyphosate) or other equivalent chemical to roots to avoid further growth including disposal of rubbish to nearest Municipal dumping ground. Lead as per direction of Engineer incharge. The rate is inclusive of open the masonry area upto founded roots ends and filled the joints with lime mortar/grout. (reworking of masonry paid sepratly for this item .)

Providing and fixing double scaffolding system (cup lock type) on the exterior/interior side of building/structure, upto 25 Rmt height, above ground level, including additional rows of scaffolding in stepped manner as per requirement of site, made with 40mm dia M.S. tube, placed 1.5 Rmt centre to centre, horizontal & vertical tubes joint with cup & lock system with M.S. Tubes, M.S. tube challis, M.S. clamps and staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for execution of work of cleaning and/ or pointing and/ or applying chemical 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 etc., complete as per directions and approval of Engineer-in-charge. Note:- (1) The elevational area of the scaffolding shall be measured for payment purpose. (2) The payment will be made once only for execution of all items for such works.

Providing and fixing Scaffolding net of required width made of high density Polyethylene UV stabilized knitted on warp knitting machines having density 100grams/sqm and shading coefficient minimum 75% around the construction site/ for vertical extension as per requirement including fastening/tying with building/scaffolding pipes or with any other fixtures etc. complete as per direction of Engineer-in-Charge. (One time payment shall be made for providing Scaffolding net from start of work till completion of work including shifting if any. The Scaffolding net shall be the property of the contractor on completion of the work)

Removing of old sulphated lime wash/white or colour wash in multiple applications without causing damage to the below stone/brick/plastered surface. Scrubbing (not by scraping which leaves surfaces scarred and scratched ) with bristle brushes and hot water ( Care to be taken if the surface is weak one it will break down). Hot water should be used if the limewash has an oil or tallow binder. Gentle cleaning with air abrasive tools can be used if the wall surface is not very week.The final clean will almost invariably have to be carried out by hand scrubbing and rinsed with clean water on completion. The work should be done under supervision of a trained conservator.

Raking out joints of stone masonry surface to the required width and depth, with due care and precaution, by mechanical / manual means, including preparing and cleaning the surface for re-pointing/ refilling of joints, including disposal of rubbish to the dumping ground within 50 metre lead.

Ruled / Flush pointing on Red sand stone masonry surface with lime, surkhi and marble dust mortar in the ratio of 1:1.5:1/2 {One lime: 1.5 surkhi (50% red and 50% light yellow surkhi ) : 1/2 marble dust}. (The rate is inclusive of all materials & labours involved except scaffolding).

Flooring protection: Covering the existing historic flooring with a layer of of 30mm Plaster of Paris thickness over a layer of high density plastic sheet 150 GSM or 10mm plywood board to ensure that scaffolding/movement of machine do not damage the historic flooring.

Brick work in gauged arches in superstructure above plinth level and upto 15 meters height (or upto floor five level, whichever is lower) including centering and shuttering complete for span up to 6 metres with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in lime mortar 1:1:1 (1 lime: 1 surkhi: 1 coarse sand).

Brick work in plain arches in superstructure above plinth level and upto 15 meters height (or upto floor five level, whichever is lower) including centering and shuttering complete for span up to 6 metres with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in lime mortar 1:1:1 (1 lime: 1 surkhi: 1 coarse sand).

Brick consolidation of Bricks masonry work by removing damaged bricks or masonry along a minor non structural crack and refixing with new bricks to matching the existing masonry by tradinonal method in lime surkhi mortar (1 Lime: 1 Surkhi:1 corse sand) as per direction of Engineer incharge.