CONSERVATION AND REPAIRS OF SINHGAD FORT, TAL. HAVELI, DIST. PUNE- PART 3

Providing and fixing double scaffolding system (cup lock type) on the exterior side of building/structure, including additional rows of scaffolding in stepped manner as per requirement of site, made with 40mm dia M.S. tube, placed 1.5 metre 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.

Removing lime or lean cement concrete including stacking the spoils as directed with all leads, lifts etc, complete.

Dismantling stone masonry in lime or cement mortar including stacking the materials as directed with all leads, lifts etc.

Dismantling the R.C.C. Work 1:2:4 and sorting out the materials such as steel etc. as directed and stacking them

Removal of plants / ficus grown by pulling out root system embedded in masnory, cutting stem and application of high/gur/lime formulation as specified by the Architect or other patented chemical biocide treatment such as biocide 'Glycel' (iso proplamine salt of glyphosate) or other chemical as specified by the Engineer in charge etc. complete.

Cutting down trees including trunks and branches with girths above 30cm to 60cm and stacking the materials neatly with all lifts and lead of 1000m as directed and earth filling in the depression / pit if any.

Rake out loose pointing mortar material from the joints of the heritage stone masonry atleast upto 50 mm in depth and clean the same by using a nylon brush or low-pressure compressed air. It may sometimes require more depth depending upon the loss of integrity of existing mortar. Care is to be taken that the adjacent good and sound matrix is not disturbed. Provide anti-rooting treatment to entire recessed pointed area. Clean the joint. area properly and pointing shall be filled with a special mix of lime base hydraulic mortar and water for masonry with highly sulphate resistant cement and silica aggregates as approved by Engineer in charge. This lime based mortar is based on special limes with thixotropic agents, aldehyde based polymer and selected sands having high abrasion resistance. Hand press this mortar in the joint and finish the surface and allow the mortar to set for minimum 24 hours. Mortar should have Compression Strength of Appr. 10 N/mm2. (If scaffolding is required, same shall be provided and will be paid under relevant item)

Lowering down carefully existing brick masonry of the monument manually in proper order including shifting the bricks up to a distance of 50 meter beyond the monument area and stacking them as directed by Engineer in-charge, removing building rubbish and cleaning the site etc. complete.

Excavation for foundation in hard murum including removing the excavated material upto distance of 50 metres beyond the building area and stacking and spreading as directed, dewatering, preparing the bed for the foundation and necessary back filling, ramming, watering including shoring and strutting etc. complete. (Lift upto 1.50 m) By Manual Means

Conveying the excavated materials, debris of brick or stone masonary, R.C.C. slab, water proofing, stone