ADDN/ALTN OF MD ACCN IN OLD AMRITSAR CANTT

Dismantling of roof brick tiles fixed in cement mortar in single layer complete all as specified and directed.

Demolition mud phuska in roofs any thickness including plastering and leeping complete all as specified.

Material and labour for PCC 1:2:4 type B-1 (using 20 mm graded stone aggregate) as in bed blocks for hold fast & similar work etc complete all as specified and directed

Material and labour Cement concrete 1:2:4 type B-1 using 20mm graded crushed stone aggregate as in roof padding (average 40mm thick), roof kerbs or mud stops, rounded or chamfered on edge complete all as specified

Material and labour for APP based polymeric membrane minimum weighing 3kg/sqm and minimum 3mm thick reinforced with polyester non-woven fabric (wt. not less than 150 gms/sqm) laid on primed surface by forced application over and including a tack coat of industrial bitumen 85/25 at the rate of 1.2 kg per sqm including cleaning surfaces complete all as specified

Material and labour for cement concrete tiles 20cm x 20cm x 20mm thick, machine pressed; set, jointed and pointed in neat cement slurry in floors with grey cement and no pigment, and cut and polished over and including 15mm thick screed bed in CM 1:4 complete all as specified and directed

Demolition of cement concrete in ground floor and paving exc 15cm thickness (below or above ground level) complete all as specified

Material and labour for water proofing treatment to sunken floors of kitchen, toilets, laboratories, bath and WCs etc shall be as under:- (a) Application of two component Acrylic modified Cementitious coating:- (i) The surfaces to be applied shall be completely dry and free from containments such as dirt, dust, oil, surface treatments and old coatings. Concrete substrates must be mechanically prepared using abrasive blast cleaning or milling to remove cement laitance, existing coating and achieve a gripping profile that is clean, dry and free from laitance and dry other form of surface contamination. The installation instructions in manufacture's published literature should be strictly complied with, including but not limited to the following :- (ii) Chipping out any visible cracks in "V-Groove" pattern as applicable. Special attention on this part. Cleaning of cracks & then filling those cracks with SIKA latex SBR 100 putty/Dr Fixit 302 SBR latex/ Perma latex SBR/FOSROC Nitabond SBR latex/Asian paint latex as required. Final cleaning of surface with power grinder, wire brush, hair brush & vacuum pressure if required. (iii) Dampen all surfaces immediately ahead of application of Acrylic modified Cementitious coating of sika Top Seal-107/ Brush Bond FOSROC/ Dr Fixit/ STP/ CICO. (iv) Whilst the surface is still damp from saturation (S.S.D), apply one coat of Acrylic modified cementitious coating of SIKA Top Seal-107 /Brush Bond FOSROC/ Dr Fixit/ STP/ CICO of viscosity as per manufacturer's instructions. (v) Apply glass fabric sheet of SIKA Fab 1/FOSROC/ Dr Fixit/ STP whilst the first coat is wet. (vi) Once touch dry, apply second coat of Acrylic modified cementitious coating of SIKA Top Seal -107 /Brush Bond FOSROC/ Dr Fixit/ STP/ CICO of viscosity as per manufacturer's instructions on the entire area. (vii) Second coat shall be applied after 6-8 Hrs of application of previous coat and in the direction right angle to the previous coat. (viii) The waterproofing coating should be taken to a height minimum 300mm above the finished floor level on the vertical surfaces.

(ix) It is essential to cure Acrylic modified cementitious coating immediately after application (minimum 6-8hrs drying) for a minimum of 3 to 5 days to ensure full cement hydration and to minimize cracking. (x) A protection plaster 12-15mm thick) in CM 1:3 admixed with appropriate integral water proofing compound has to be applied on the walls. Admixture : SIKA Plastocrete Plus/ FOSROC/ DR Fixit/ STP/ CICO conforming to IS 2645.  Providing and applying a protection screed of 50mm thick 1:4, cement sand mortar admixed with SIKA Plastocrete over the applied water proofing coating on horizontal surfaces. Admixture: SIKA Plastocrete Plus/ FOSROC/ DR Fixit/ STP/ CICO conforming to IS 2645.  (xi) All the corners and joints should be pre-treated with an elastic waterproofing sealing tape with a woven bonding mesh on each surface and an elastic expansions zone in the centre of Make SIKA Seal Tape/ FOSROC/ Dr Fixit/ STP. (xii) The membrane has to be protected in accordance with the manufacturer's recommendations until placement of concrete. The membrane to be inspected for damage just prior to concrete placement and make repairs in accordance with manufacturer's recommendations. (xiii) Waterproofing treatment has to be carried out through applicators authorised. (b) All the joints of pipes and traps within the sunken portion shall be sealed properly by epoxy sealant. (c) All CI traps in sunken slab to be enclosed with PCC 1:1.5:3 (Min 15cm) all around. (d) The sunken portion shall be filled with PCC 1:5:10 type E-2 (using 40mm stone aggregate) complete all as specified. (e) Providing drainage spout pipe GI 40mm dia bore light grade upto outside of outer wall (Approx 450mm to 600mm long) including cutting to existing wall and making good the disturbed surface complete all as specified and directed. (f) Providing 25mm thick cement concrete 1:2:4 type B-0 using 12.5mm graded stone aggregate as in flooring for laying floor finish all as specified. Note : Items No. 2.08 (d), (e), (f) shall be measured and paid separately under relevant items.