BARCT/NRB /GSO/EMCC/CMT172/ 2023/05 Dt. 25/09/2023

Amount

Removal of old 2 to 3 mm thick APP sheet and clean the surface including labour, tools & tackles, scafoolding and material charges to complete this work etc. complete as per specifications and as directed by engineers.

Surface Preparation: All loose and de-bonded concrete/ screed shall be removed and proper repairing tobe carried with polymer modified mortar. Terrace water proofing: Clean the receiving roof surface with pressure water. All looseparticles, dirt & rub down to original hard surface.

Repair to screed cracks: Inspect for cracks over roof screed, roof wall junction, water drain inlets / outlets if any, and clean and moisten them. Crack’s width more than 0.5 mm having shrinkage crack up to 5mm width should be wide up to 5-6 mm with mechanical cutting machine and should be filled with Polymer Modified Mortar admixed with (volume) Styrene Butadiene co-polymer latex liquid 10 % by weight of cement. Fill all larger cracks more than 5 mm with polyurethane flexible sealant. Through and through cracks on the slab must be identified visually or by ponding which are more than 1mm and are visible on the RCC ceiling as well on the screed top and having drip leakages should be treated with PU sealant. Cut open the crack in square or U - groove manner up to minimum 6 mm size by mechanical cutter. Clean the groove with air blower to remove dust, dirt etc. Fill the cracks with PU Sealant after necessary cleaning.

Providing and laying integral cement based water proofing treatment including preparation of surface as required for treatment of roofs, balconies, terraces, chajjas etc. consisting of flowing operations (i) Injecting the top slab as required with cement and approved water proof compound solution to fill up all inherent holes, voids, honey combs etc.in the concrete slab, (ii) apply a polymer based cement bond coat by mixing Styrene Butadiene co-polymer latex liquid 10 % by weight of cement (iii) Setting "brick bats" coba in waterproof mortar with necessary gradient for easy flow of water & continue the treatment along the inner faces of parapet or other adjoining wall up to a height of 300 mm in the shape of vatas, (iv) finishing the surface with 20 mm thick jointless cement mortar of mix 1:4 (using washed crushed sand) admixed with Integral water proofing compound conforming to IS 2645 and approved by Engineer-in-charge including mixing 'polyester fibre of approved make' at the rate of 125 grams per 50 kg of cement in top layer of plaster including laying a fibre glass mesh as a reinforcing material (v) final finishing the surface with trowel with neat cement slurry and making pattern of 300 X 300 mm square, 3 mm deep (vi) The whole terrace so finished shall be flooded with water for a minimum period of 2 weeks for curing and for final test. All above operations to be done in order and as directed and as specified by the Engineer-in-charge 60 mm Average thickness for terraces using washed crushed sand

Waterproofing: Apply one coat of primer composed of acrylic emulsion polymer as per manufacturers recommendation in SSD condition. Apply 1st coat of polyurethane dispersant based waterproofing coating of approved make without dilution spreading at the rate of 0.70/litre/Sq.mt/Coat until all surface is covered. Lay a 45 GSM Fibre glass mesh as a reinforcing material which is incorporated in the coating when the first coat is still in wet condition. Allow the first coat to dry for approximately 4 - 6 hours before applying the 2nd coat at 90° to the first coat. Ensure there are no pinholes or air bubbles on the membrane surface. Apply second coat of polyurethane dispersant based waterproofing coating without dilution spreading at the rate of 0.70 litre / Sq.mt /Coat to achieve total dry film thickness of 850 to 1000 microns at forced coverage at the rate of 1.40 litre / Sq.mt in 2 coats. Air cure the coating for 7 days. System shall have 12 years waterproofing warranty. Note – Coating should be terminated below the drip mould on the vertical surface

Providing and fixing double tubular scaffolding system using Hframes with cup lock type on the exterior side upto seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre horizontal and vertical tubes joining with cup and lock system with M.S. tubes, M.S. tube challies, M.S clamps and M.S staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connection with building etc. wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and as approved by the Engineer -in charge. The elevational area of the scaffolding shall be measured for payment purposes. The payment shall be made once irrespective of duration of scaffolding

Crack Filling: Opening non structural hairline cracks in plaster surface and fill the cracks up to 5mm with high quality weather durable acrylic emulsion polymer paste in following steps. Apply primer coat prepared with high quality weather durable acrylic emulsion polymer Paste and water in 1:1 proportion over the crack. Fill high quality weather durable acrylic emulsion polymer Paste when the surface is tacky and not dried completely with a spatula. Allow it set for 24 hours and then apply another coat of high quality weather durable acrylic emulsion polymer Paste. Large and separation cracks should be filled with Polymer Modified Mortar in SSD condition

Removing & Repair of external loose plaster: Tapping the surface with a small hammer, check if the areas of existing plaster from RCC, Chajja, and Pardi etc are not bonded firmly to the surface with a hollow sound. Mark and remove with mechanical devices or manually at any height including raking out joints of Brick work without causing nuisance and cleaning the surface and carting away from the and location. Repair the area with cement polymer modified mortar in the ratio of 1:4 (washed crush sand) by adding Styrene Butadiene co-polymer latex liquid @ 10% by weight of the cement with rough finish, curing etc complete

Priming Coat: Providing, and applying single coat of exterior penetrating water-based primer composed of acrylic emulsion polymer primer for superior bonding after thorough cleaning of all laitance, loose material, oil, grease, etc. Allow the primer to cure according its technical instructions.

Making holes/ grooves with suitable tools as per requirement up to 75 mm and fixing 12mm NSM threaded nozzles in th hole/ grooves fixing witth cement with quick setting admixture including and scaffolding, material and labour as per specification and as directed by the Engineer- in-Charge

Providing and injecting cement slurry with non shrink polymer grout of aproved make through the existing nozzles using hand opreated grouting pump which should capable of delvery a pressure of 2.5 kg/sqcm when the fill of slurry completed. Including cost of all materials and labour charges as per specification and as directed by the Engineer-in-charge.

Providing and fixing welded steel wire febric of required width for structural repair in old damage concrete structure/surface having reactangular mesh painted with two or more coat of enmal paint of approved shade over a coat of primer as per direction by Eng-Incharge) (primer and painting tobe paid seperatly)

Providing structural repairs in old damaged concrete structures / surfaces with approved Polymer with following operations 1) Removal of loose/Spalled or damaged concrete by chipping and cleaning the concrete surface and reinforcement steel with wire brush and with water 2) Cleaning the re bars with Acetone for complete rust removal and washing with water to make the surface clean. 3) Applying protective coat / bond coat using polymer and cement in the proportion of 1; 1.5 (1 part of polymer and 1.5 parts of cement in synthetic enamal paint like consistancy with brush 4) Reinstate the area with polymer modified mortar in layers of maximum 20 mm with the proportion of Cement 50 Kg : washed and dried river sand 87.50 kg ; silica sand 37.50 Kg. mixed with 10 litres of Polymer (or 1 Kg cement : 1.75 kg washed and dried river sand ; 0.75 Kg silica sand : 200 ml polymer) 5) If thickness of repair exceeds 20mm , after every 20 mm thick repair, bond coat as per 2 above to be applied and further thick of repair to be continued for each layer. This work is inclusive of all materials, labour, complete all as directed at site using approved polymer suitable for structural repair shall be used) including scaffolding charges.

Providing, painting, finishing walls with two coats of anti-algae, weather proof acrylic smooth emulsion paint of approved make with silicon additives on sand face plaster/ plain plaster & concrete surfaces of required shade over new work over a base coat of exterior cement primer including preparation of the surfaces, scaffolding complete. as per specifications and as directed by the Engineer-in-charge..

Providing and fixing G.I. chicken mesh in the junctions of concrete & brick work / masonry or as directed by the Engineer in charge including cutting, fixing with nails in position before plastering complete all as directed by the Engineer-in-charge. (only area of the chicken mesh used alone will be measured)

Shivkrupa Enterprises