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DRAFT OF SPECIFICATIONS

Item : Providing Anti-corrosive Treatment to HYSD Reinforcement Bars withFusion Bonded Epoxy Coating (FBEC)

1.0 Reinforcing Bars

The reinforcing bars to be provided with Fusion Bonded Epoxy Coatingshall conform to the tender specifications and relevant I.S.Specifications. Inspite of producing test certificates by contractor forthe proper quality of reinforcing bars, the quality of steel could also betested by the FBE coating firm at plant site for bend test before doingcoating and that if the reinforcing bar fails in bend test, then it shall notbe provided with FBEC and in that case, cost of conveyance of suchsteel to plant and removing form plant shall be of the contractor. Therechecking quality of steel, for bend test will be done by the coating

agency in the presence of contractor provided the contractor choose toremain present.

Reinforcing bars to be coated shall be fresh from rolling mills as far aspossible. If the bars are very much rusted in quality before providingFBEC, such bars shall have a loss of weight at contractors risk.

To ascertain the loss in weight of reinforcing bars on account ofremoval of rust during coating, random weighment before and aftercoating shall be done and that loss in weight shall be borne by thecontractor.

2.0 Coating Bars with FBEC

The FBEC coating shall be done confirming to I.S. Code 13620:1993with additional stipulations as under.

2.1 The Fusion Bonded Epoxy Coating shall be carried out by anauthorised FBE coating agency approved by Department.

2.2 Patch-up materials shall be procured in sealed containers withcertificates from coating agency for supply of such patch-up materials.

2.3 The tender rate for FBE coating shall include using PVC coated G.I.

Binding Wires of 18G.

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3.0 Tests for FBE Coating on Reinforcing Bars

3.1 The contractor shall produce certificate from the FBE coating agencythat the quality of powder epoxy material and other components ofFBEC conform to I.S. 13620:1993. Such certificates shall accompanyeach delivery challan of coated bars while leaving the plant. Thecontractor may also carry out such tests at plant jointly or separately ofthe coating agency to confirm use of proper quality of coating material.

3.2 The coated reinforcement bars shall be tested at plant by thecontractor. Test reports shall be jointly signed by authorisedrepresentatives of contractor and the coating agency. The tests oncoated bars shall be as per I.S. for the following tests:

(a) Thickness(b) Continuity(c) Adhesion

The frequency of tests shall be for the thickness of coating minimum

two bars of each size from each production shifts.

Random tests shall be made for continuity of coating.

3.3 Inspite of above tests and test certificates produced by the contractorand coating agency, the Department/Owner reserves the rights to carryout independent tests at coating plant for cross checking. Thecontractors agreement with coating agency shall include the provisionsfor Departments/Owners cross checking and that if the coating qualityis not approved by the Department/Owner the decision of theDepartment/Owner to reject or repair the coating shall be final andbinding on all parties.

3.4 Thickness of Fusion Bonded Epoxy Coating shall be 200 to 250microns.

3.5 Holidays in coating shall not be more than two holidays per linear foot(six holidays per meter) of coated bar.

4.0 Handling

4.1 The coated bars shall be carefully handled in order not to drop them,not to rub them on hard surface or against another coated bar whileconveying, stacking, placing or stacking of fabricated bars and that for

this purpose, wooden packing batons shall be used at spacing of notmore than 60 cms.

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The coated bars shall be tied to make bundles with PVC bindingmaterial to avoid damages to coating.

4.2 The coated bars shall be stacked with separation gap between groundand bars with wooden batons between rows of bars or bundles of suchtied bars. Such wooden or padded contact shall be at spacing of notmore than 60 cms.

4.3 The cut ends of bars shall be touched up with special touch upmaterials of specifications as provided by coating agency. There shallbe minimum time gap to repair the cut ends and damaged portions withtouch up materials and that failure to do so may cause completerejection of the coated bars. The cut ends and damaged portions shallbe touched up with repair patch-up material within four hours time gap.All damages to coating in handling etc. shall be repaired irrespective oftheir size. This stipulation supersedes provision of I.S. Code.

4.4 No payment will be made for coated bars which are not used in thework and that if they were paid either on account of coating of the

rejectable part of bars or doing extra fabrication etc., the amount paidwill be recovered from contractor. The contractor will be paid for thesame quantity of steel bars used in the work and paid under relevantitem.

4.5 While bending the bars, the pins of workbenches shall be provided withPVC or plastic sleeves. It is preferable that contractor install barbending machines suitable for FBE coated bars and that each bendingoperation is done in a time of not less than 90 secs.

4.6 The coated steel shall not be directly exposed to sun rays and rainsand shall be protected with opaque polythene sheets or such other

approved materials.

4.7 While doing concreting, the workmen or trolleys shall not directly moveon coated bars but can move on wooden planks placed on the bars bycontractor.

4.8 Inspite of all test certificates, if the coated bars are roughly handled bycontractor either during transport, fabrication, stacking, placing andconcreting etc. or handled in such a manner as to damage the coatingfor area or portion more than reasonable, the Engineer-in-charge orDepartment/Owner reserve the right to reject the FBE coated bars andthat if rejected then such rejected bars shall be removed by contractor

from work site within three days. The decision of Engineer-in-chargewill be final as to reject the bars with damage coating or to allowrepairing the coating, or to get it recoated entirely at contractors cost.