PROVN OF PU FLOORING FOR TTCLE HANGER AT AFS KANPUR

Amount

M & L 5mm thick PU based anti static flooring complete all as specified and directed or as per manufacturer instructions consisting of following steps / stages :- Make: CIPY/SIKA/BASF/ASIAN/APURVA

(a) Surface cleaning:- Cleaning of surfaces free from dust, dirt, moisture & all foreign material from the floor. All floor is to be cleanned by means of scrubber and shot blasting/diamond grinding machine. Acid itching and water wash is done. Then the oil/ grease is removed from the floor using Hot compressed air blasting machine. For floor cleaning all meachanized equipments are to be used like scrubbers, sanders, hot blowers, vaccum cleaners, moisture test machine etc. The damage and distorted concrete shall be repaired by polymeric screed.

(b) Cutting & filling cracks:- Cutting of existing cracks in ' V- shape' groove (minmum 5cm) by use of diamond cutter to have perfect plane surface without breaking the edges, removing dust by power blower/ compressed air and removing rubbish material as directed by Engr-in-charge and filling the grooves with epoxy mortar or polyurethane sealant as per manufacturers instructions.

(c) Joint Filling : Racking out existing sealing compound completely from all existing joints (Constructions/Expansion/Dummy Joints) and cleaning the joints throughly by removing dust, dirt, loose and foreign material etc by appropriate hand tools and scrapping out joints, grinding or cutting the inner sides of joints by diamond cutter to have perfect plane sealent free surface without breaking the edges, removing dust by power blower/compressed air and removing rubbish out side MoD land and making good the existing demaged joints by using epoxy mortar. Once the preparation of all existing joints has been done as described above, applying a coat of epoxy primer on sides and bottom of joints and fill the joints with using polyuretheane sealent (single component) of approved make with colour matching to PU flooring compelte all as specified and as directed Note: When the depth of joints deeper, closed cell polythene back up rod of appropriate dia with 2mm debonding tap shall be inserted in joints as tight fitting seal as per direction of Engineer-in-charge so as to prevent over consumption of sealent. The unit rate quoted by the contractor is deemed to include supply and fixing of back up rod of appropriate dia with 2mm debonding tap as per required at stie.

(d) Primer: Providing and applying low viscous epoxy primer consisting of mixing of Resin and Hardner in a ratio as per manufacturer's instrutions to provide a DFT of 200 micron. Primer shall be allowed to cure as per manufacrure's instructions.

(e) Screed: Providing and applying self levelling screed (epoxy modified mortar) consisting of mixing of Resin, Hardner and aggregate in a ratio as per manufacturer's instructions to achieve desired thickness of 2700 microns. The layer is de-aerated by spike roller or by any means to dislodge air pockets. Screed layer shall be allowed to cure as per manufacturer instructions.

(f) Copper tape GRID : Providing and fixing of 100 microns thick, self adhesive (conductive grade) copper tape to ensure quick transfer of charge (Make: 3M or equivalent) including connecting copper wire / tape and earthing etc required to get the desired result. The spacing of copper tape Grid shall be approximately 5 m x 5m C/C both ways or as per manufacturer instructions. Any division in the floor by way of expansion joints is joined by copper tap along the sides of the expansion joints .

(g)Conductive primer: Providing and applying PU (polyurethane) based conductive coat consisting of mixing of Resin, Hardner in a ratio as per manufacturer's instructions to yield a DFT of 100 microns. Ensure that entire area is covered evenly. Allow the conductive primer for curing as per manufacturer instructions.

(h) Self leveling course of PU (polyurethane) top coat : Providing and applying PU based conductive self leveling top coat (It is a mixture of pre weighted pack (set) which is ready to use. it consist of Resin+Hardner+EPI (Pigment)+Formulated aggregatge+Carbon fiber) containing antistats to yield a thickness of 2000 microns and surfaces resistivity which will not exc 10⁹ Ohms. The cured surface shall be tested with Megohm meter as per ASTM F-150 to check the readings as per the design.

(j) Applicator : The entire work/ application shall be done through qualified applicators of manufacturer only. Make: CIPY /SIKA /BASF /ASIAN / APURVA NOTE: (i) Contractor will submit details of all epoxy,primer & PU with their make and manufacturers specifications for application to GE for approval before commencement. (ii) Colour of PU floor and line markings / symbols with colour other than PU floor, shall be as approved by GE and deemed included in rates quoted. Unit rate quoted shall be deemed included for the provisions of any type of marking/ symbols. (iii) Contractor will carry out a 50 Sqmtr trial patch of PU flooring at place under scope of work as directed by GE. Trial patch will be approved for quality by GE, only then further PU flooring work will be permitted to be carried out. This trial patch of PU flooring work shall be get entered in MB duly signed by all concerned and counter signed by GE in token of acceptance of quality of work and will be paid to contractor under this item. Incase trial patch not approved for quality by GE, then the same shall be reconstructed & relaid by contractor at his own arrangement & cost, till approval of quality by GE. No payment will be made to contractor for failed trial patch of PU flooring. (iv) Before comencement of work the contractor will submit (through manufacturer) per Sqm consumption rate of various ingradient seperatly for each stages for 5mm thick antistatic PU flooring. (v) The unit rate quoted by contrqactor is deemed to included any other civil/electrical work rquired to make the PU floor antistatic.

M&L preparation of PU antistatic floor surface/old painted steel surfaces of any description and marking of lines, dashes, arrows, letters etc by applying two coats of polyurethane based paint of approved shade with surface primer by using epoxy based solvent free compound all as per manufacrure's instructions complete all as specified and directed.

MITHILA BUILDERS AND ENGINEERS

RAVINDRA SALES

NEW GURBINDER INDUSTRIES

MD BUILDER

BRITE INDUSTRIES

SAKSHAM BUILDERS AND ENGINEERS