ADDN/ALTN TO TOILET BLOCKS (04 NOS) OF PRIMARY WING OF PM SHRI KENDRIYA VIDYALAY AMC CC UNDER GE (EAST) LUCKNOW

Demolition of cement concrete (unreinforced) in ground floor and paving n.exc 15 cm thickness below and above ground level, complete all as specified and directed.

Demolition of brick work or stone/boulder masonry built in cement mortar including all quoins, arches , pillars etc but excluding ashlar facings, dressed stone work and precast concrete articles.

M & L for brick work using old size fly ash brick, straight or curved on plan exc 6m mean radius, built in CM (1:6), complete all as specified and directed.

M&L PCC 1:2:4, type B1 using 20 mm graded stone aggregate as in roof kerbs / benching / coving and roof padding over roof surfaces /sunken treatment etc rounded or chamfered on edges, complete all as specified and directed.

M&L for Screed bed or bedding layer of mortar 15 mm thick for laying floor finishes in CM 1:4 mixed with water proofing compound (ISI marked) @ 200 ml per bag cement by weight of cement or as per manufacturer’s instructions, w/o using extra cement complete all as specified. Note :- Supply only water proofing compound shall be measured and paid for separately.

M&L for providing and applying single component PU Magnum solvent base Pure polyurethane liquid membrane for the concrete roof surfaces in two coats @1.85kg/ sqm and mixing ratio of hardener and base is 95:05 and consisting of a coat of two component epoxy primer in ratio of 1:1 (one part of resin and one parts of hardner) at a consumption of 0.200kg/sqm The vital physical and chemical parameters shall be as under : Min Elongation at break of 500% as per ASTM D2370 and tensile strength of 3.0 N/mm2 as per ASTM D2370, Crack Bridging ability greater than 3mm as per C1305 ,Water Impermeability on coated concrete @7 bar as per DIN1048,Water vapor permeability 0.72 perms as EN ISO 7783-2 . The material shall be applied with brush and it should be tested according to EN 1504-2 as a coating for surface protection for concrete complete in all respect as per the direction of Engineer-in-charge.

Demolition of sunken slab floor of WC and Bath including WC trap etc upto 50cm depth incl taking down loose filling of aggregate in any type and removing where direted and providing water proofing treatment of sunken slab as follows:- (a) 15mm thick rendering on vertical sides of RCC slab in CM 1:3 mixed with chemical " PIDIPROFF LW of Dr Pidilite or equivalent " as per manufacturer instructions. (b) Cleaning the concrete surface by brushing and watering and remove all surface inperfections. (c) Fixing 40mm dia Pipe 450mm long at bottom of the sunken floor and wraping of bath seal tape on the pipes inserted through walls to floor area and seal it (Bath seal tape product of Dr fixit or equivalent and grouting around the inserted pipes by pouring Dr fixit bath seal or equivalent grout as directed (d) Make angle fillets by mixing sand cement and Dr fixit pidicrete URP or equivalenont all corners. (e) Brushing neat cement slurry two coats with high performance cementitious polymer water proofing coating of Dr fixit bath seal WPC or equivalent of thickness 1mm in combination of WPC and cement (1:1.5) by vol and giving upto height 15cm from bottom slab and allow it dry completely. (f) Providing PCC 1:4:8 type D-2 using 40mm graded stone aggregate, 150 mm thick mixed with WPC as per mnufacturer instructions in sunken slab after filling brick bats to match floor level . (g) Fill the sanitary gaps with sealing compounds complete.

Taking down cement plaster or cement lime plaster on PCC/stone surface/brick surfaces including raking out joints hacking for key scrubbing down with water etc, complete all as specified and directed.

M&L for rendering/plaster by using readymix mixture of thickness 12 mm to 15 mm on newly prepared surface and plastering the wall surface with white cement based polymer modified self curing mortar, all complete as per the direction of Engineer-in-Charge.

Repair to plaster by using readymix mixture of thickness 12 mm to 15 mm and taking down cement or cement lime plaster, raking out joints and preparing plastering the wall surface with white cement based polymer modified self curing mortar, including disposal of rubbish, all complete as per the direction of Engineer-in-Charge.