COMPREHENSIVE MAINTENANCE FOR CONVERSION OF EXTERNAL FINISHES AND PERIODICAL SERVICES IN OTM ACCN OF ENGR REGT KLP INCL REPAIRS/REPLACEMENT OF ROOF TREATMENT AND SEEPAGE, DAMPNESS, EFFLORESCENCE ETC OBSERVED DURING MONSOON IN CERTAIN MD OTM ACCN AT

Amount

Material and labour for preparation of old plastered ceiling surfaces by brooming down or steel wire brushing, scrapping down smoke soot, mould, moss and efflorescent salts and trading oil and greasy spots and applying one coat of white wash complete all as directed by the Engr-in-Charge. (Make : Rajasthan/ Surya cem/ Star or equivalent as approved by GE)

All as per item No 1.00 here-in-before but for wall surfaces (Make : Rajasthan/ Surya cem/ Star or equivalent as approved by GE).

Material & labour for preparation of old painted surfaces of wood & wood based materials over 10 cm width or girth and applying one coat of synthetic enamel paint complete all as directed by the Engr-in-Charge. (Make : Asian Paints/ Berger/ Dulux/ Nerolac).

All as per item No 3.00 here-in-before but on steel and iron surfaces complete all as specified and as directed by the Engr-in-Charge.

Material & labour for preparation of old surfaces and applying 01 coats of cement base paint complete all as specified and as directed by the Engr-in-Charge. (Make : Snowcem/ Birla cem/ Jhonson Paints or equivalent as approved by GE). Note : Application shall be through Smart Painting tools as per Contract Conditions.

Taking down cement plaster on brick or stone walls, including racking out joints, hacking for key, scrubbing down with water etc complete all as specified and directed by the Engr-in-Charge.

Material and labour for rendering 15mm thick on fair face of brick or concrete surfaces in CM (1:6) finished even and fair without using extra cement etc complete all as specified and directed by the Engr-in-Charge.

Material and labour for rendering 5mm thick in CM (1:3) on concrete surfaces in ceiling including finishing even and smooth without using extra cement etc complete all as specified and directed by the Engr-in-Charge.

Removing the plant/growth of any description size, any location of external surfaces of walls shafts by cutting & remvoing the roots completely spraying the suitable chemical (each plant 100 ML) in the removed portion to avoid re-growth & making good damaged portion to match the existing surfaces by PCC type B0 (1:2:4) 12.5 mm graded aggregate complete all as directed by Engr In Charge. (Chemicals : Gramzone/Roundup or equivalent suitable to remove/destroy the plants/roots)

Complete removal of existing treatment & levelling of wall/ceiling surface using MECHANICAL / ELECTRICAL OPERATED SANDING / SCRAPING MACHINE WITH INBUILT VACCUM SUCTION system to suck the existing treatment as retrieved by scrapping/sanding etc for obtaining smooth paintable surface complete all as specified and directed by Engr-in-Charge.

Material and Labour for applying 02 coats of 100% Premium acrylic emulsion paint, as per specified TINT (using AIR-LESS PAINT SPRAYER) having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, Alkali & fungal resistance, dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/ 10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/ 10sqm over wall surfaces by using AIR-LESS PAINT PRIMER SPRAYER including preparation / levelling of old surface of wall using manual sand papers (where reqd) of approved grade complete all as specified and directed by Engr-in-Charge.

Material and Labour for 01 coats of Oil Bound Distemper on prepared surface of wall & ceiling over a coat of approved primer (primer shall be of similar make as per OBD) using AUTO-ROLLER and AIR-LESS PAINT SPRAYER complete all as specified and dircted by Engr-in-Charge.

Material and labour for Cleaning vertical and horizontal surfaces of unplastered masonry wall and concrete surfaces for loose materials/dust and applying two coats of epoxy resin component (Dr. Fixit DAMPGUARD or equivalent) solution/mix using nylon brush pouring Base part in appropriate container followed by the Hardner part and mix thoroughly to attain homogeneous smooth paste and dilute the mixed compound with water in ratio 1 part Base: 1 part Hardner: 1 part water by slow addition and mix thoroughly until a brushable consistency is obtained, first coat will be allowed to dry for 6 to 8 hrs before application of second/final coat) incl curing treated surface for 24 hrs complete

Dismantling of existing water storage tank 500 ltr capacity and removing to store complete all as directed.

Disconnecting existing tanks 500 ltr, setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position incl cleaning and removing all scale and dirt, etc, from tanks and from mouths of circulating pipes, etc complete all as specified and as directed.

Supply and fix Rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I, 500 ltr capacity etc complete all as specified and directed by the Engr-in-Charge.

Taking down all existing roof treatment and demolition of cement concrete padding/levelling course (any thickness as available in site) incl wire brushing and cleaning loose dust etc from surfaces of RCC roof incl flashing and juntion of parapet complete all as specified and directed.

Materials and labour for preparation of RCC roof surface by cleaning the entire roof with Pressure water jet to remove the unwanted dust, loose material or any other material which may impair adhesion of the material. Surface must be cleaned and dried properly so that any cracks on the substrate can be visible. Concrete substrate to be cleaned up to exposed sound concrete cover, remove dust, laitance etc, which may impair adhesion of the material. All the visible surface cracks up to 1-2 mm wide should be filled with single component cold applied elastomeric waterproofing coating (Dr. Fixit RoofSeal Ultra or equivalent) using a brush and adding a coat on the slab on both sides of the crack, up to a distance of 100 mm around it. Cracks more than 1-2 mm wide should be widen by making V-groove and repaired with PMM (Polymer Modified Mortar) using Dr. Fixit Pidicrete URP or equivalent 10% by weight of cement. Note : 1. Finished surface shall be as per satisfaction of Engr-in-Charge. 2. All cracks shall be checked by Engr-in-Charge before and after treatment with satisfaction and rates quoted shall be included the quantum of cracks, except the cracks more than 1-2 mm wide, in proposed surfaces which shall be checked on ground by the contractor before quoting bid. 3. The cracks more than 1-2 mm wide shall be measured and paid separately under Serial item no 19 here-in-after. 4. No addl amount shall be claimed further for repairing the cracks and quoted rates shall be deemed to be included accordingly. 5. Entire application shall be carried out by trained certified manufacturer applicator only as approved by GE.

Material and labour for cutting out the cracks more than 1-2 mm wide to V- section in existing roofs or terraces, cleaning out and filling with PMM (Polymer Modified Mortar) using Dr. Fixit Pidicrete URP or equivalent as approved by GE @10% by weight of cement as per manufacturer's instruction complete all as specified and directed..

Material and labour for 25mm thick PCC (1:2:4), type B0 (using 12.5mm size stone aggregate) as levelling course, padding on chajjas, etc incl angular moulding at junction upto 10cm height complete all as specified with WPC as per manufacturer's instruction, applied over prepared surfaces as per Serial item No. 18 above. Note : (i) WPC shall be measured and paid extra as supply only. (ii) PCC shall be laid to acheive true slope towards the drain/weep holes.

Supply only Integral liquid waterproofing compound complete all as specified.

Material and labour for single component cold applied elastomeric waterproofing coating (Dr. Fixit RoofSeal Ultra or equivalent) on in-accessible roof based on synthetic resin emulsion, tough yet extremely flexible coating that can be efficiently applied by roller or squeegee having fwg important features : (i) High film build up provides excellent water resistance. (ii) Excellent flexibility and elongation properties - can easily accommodate all normal building movements. (iii) Can be applied to complex shapes to form a seamless and highly durable water proofing coating. (iv) Adheres firmly to most of building surfaces incl both horizontal and vertical surfaces of parapet, etcs. (v) Suitable consistency for easy application by brush, roller or squeegee. Single component cold applied elastomeric waterproofing coating (Dr. Fixit RoofSeal Ultra or equivalent) shall be applied by sprinkling some water over the roof just before application of 1st coat @ 0.75 ltrs/Sqm uniformaly over the entire flat surface incl vertical parapets including reinforcing fibre (45 gsm Glass fiber mesh) and allow for drying for 12 hrs and 2nd coat @ 0.75 ltrs/Sqm shall be apllied (perpendicular direction of 1st coat as per manufacturer's instruction) on dried 1st coat complete all as specified. Note : (i) Entire application shall be carried out by TRAINED CERTIFIED MANUFACTURER'S APPLICATOR only as approved by GE. (ii) Waterproofing treatment shall cover min 10 yrs WARRENTY by the applicator and Contractor. (iii) Quoted rates shall include WATER PONDING TEST : After full drying of second coat for at least 72 hrs, a water ponding test can be performed by filling water on the terrace by carefully blocking all the down take drain outlets without damaging the coating. The test shall be carried out for 48 hrs by filling water up to 50 mm level. Observe for leakages, if any, and then remove the water and allow the coating to dry completely for handingover of site. (iv) Application shall be restricted in open sunlight having temperature above 35°C.

Demolition of brickwork/stone masonry built in cement mortar or cement lime mortar and removal of rubbish off the site etc complete all as specified and directed by the Engr-in-Charge.

Material and labour for Brickwork with subclass ‘B’ bricks, straight or curved on plan exc 6m mean radius built in Cement mortar (1:6) etc complete all as specified and directed by the Engr-in-Charge.

Material and labour for removal of all loose/unsound/damaged concrete/plaster from existing RCC structure of by using chiesel/hammar/mechanical and cut/remove unsound reinforcement bars, wires etc without damaging the sound reinforcement, clean loose rust from bars manually with brush, fixing new supplymentary bars (if required), either by tying it with existing bars or by welding, core of concrete shall be firm, dust free and clean, laitance should be remove by wire brush/mechanically. The surface shall be washed throughly with water and dryed before the application of bonding agent. Bonding agent shall be applied by the brush on the core of concrete structure as per manufacturars instruction. The bonding agent shall be Nitobound EP of FOSROC or equalent chemical from SICA/MC BAUCHEMIE/DOCTOR BECK. The coverage area for the bonding agent shall not be less than 2.6 Sqm/Litrs, and making good with Cement Concrete (1:1.5:3), type B0 (using 12.5mm graded stone aggregate incl waterproofing compound as per manufacturer instruction) as required thickness and match the finishing of the existing surface.The thickness of damaged portion should not exc 200mm and more than 75mm in width and thickness including scafolding and formwork as required complete. Note : TMT bar shall be measured and paid extra as supply only.

Supply only TMT bars for reinforcement, in available lengths complete as specified.

Demolition and breaking up drain pipes (Salt glazed ware, AC or Reinforced concrete) set in cement mortar, fixed to wall, etc complete all as specified and directed by the Engr-in-Charge.

Supply and fix 110mm dia PVC (SWR) pipes single socketed in any length with rubber ring joints fixed to walls etc complete all as specified and directed by the Engr-in-Charge. Note : PVC pipe shall be of SILENT grade of Make : SUPREME or equivalent as approved by GE.

Supply and fix 110mm dia PVC (SWR) bends etc complete all as specified and directed by the Engr-in-Charge. Note : PVC bend shall be of SILENT grade of Make : SUPREME or equivalent as approved by GE

BANERJEE CONSTRUCTION

SHRI MILAN CHANDRA DAS

ROY CONSTRUCTION