FABRICATION, SAND BLASTING, METALIZING, PAINTING, TRIAL ASSEMBLING, DISMANTLING, STACKING OF STEEL TRUSS/ PLATE GIRDERS AS PER RDSO DRAWING AT LC- 448 AND LC NO.184

Fabrication, trial assembly of 1X42 M bow String girder for LC No.448 and 1X48m bow string girder +1X18 m span composite Girder for LC no. 184 as per drawing, and or approved fabrication drawings, complete with steel conforming to IS:2062:2011, which will be supplied by BBJ. With agency's all materials , machineries tools tackles consumables ( from RDSO approved manufactures) , energy/ power all leads lifts, labour, etc. at RDSO approved agency's owned premises complete in all respect as per approved drawing and specifications, relevant clause of the contract and RDSO guidelines. The fabrication cost also include all type of stiffeners, packing, diaphragm, steel drift, shop welds, all type of gases, shop rivets/ service bolts , templates, jigs, fixtures, back up supports accessories etc. to complete the job. The rate shall include testing charges of all materials preparation of QAP, WPSS, WPQR and getting it approved by RDSO or any other agency as decided by BBJ /Railway. No part of the work shall be painted or coated , packed or despatch until it has been finally inspected and approved by the inspecting officer as per QAP. The rate shall also include the cost of approval by RDSO / any other agency as decided by BBJ.

BOW String Girder 42 m span and 48 m span (Fabrication of Steel Work)

Plate Girder Semi Through Girder/Composite Girder (Fabrication of Steel Work)

Erection / trial assembly and launching of BOW string girder with manpower, consumable, electrode, testing of weld joints, machinery, crane etc as complete the whole Job. BBJ will provide only trestle for erection and launching of the girder at site on returnable basis.

BOW String Girder 42 m span and 48 m span (Erection / Launching including Site welding of Steel Work)

Plate Girder Semi Through Girder/Composite Girder (Erection / Launching of Steel Work)

Grit/ sand blasting, Aluminium metalized (as per cl.:39.2.1 of RDSO:B1 and as per the RDSO stipulation vide letter No. CBS/MPP/Meeting; dt. 10/04/2014) preceded by surface preparation by compressed air blasting/ centrifugal blasting with suitable abrasive material (as per cl.: 39.201 Appendix VII of RDSO: B1) The metalizing shall be followed by one coat of etch primer to IS:5666, one coat of zinc chrome yellow primer to IS:104 with the additional provision that zinc chrome to be used in the manufacture of primer shall confirm to type -II of IS:51 followed by one coat of aluminium paint to IS:2339. The above Painting/ Metalizing scheme is a brief outline – but these will be guided by all the provisions as detailed in cl. 39.2 and 39.2.1 of RDSO:B-1 along with relevant appendices and other codes mentioned therein. The rate shall include all consumables, metalizing wire, all kind of gases, abrasive materials, paints, diesel plant machinery, labour lead lift with proper stacking as complete the job. The rate shall also include testing charges of all material like metalizing wire and 3 (three) types of paints . It also include scratch test and measuring of DFT thickness as per provision of QAP and RDSO guideline. The final coat of Aluminium paint to be applied after all works are completed clearance by Railway /BBJ

Transportation of painted girder from fabrication work shop to site with truck / trailer including loading with proper wooden packing in-between members and marking of individual member. Material should be sent span wise, in a proper sequence. During transportation proper care should be taken to avoid distortion in painted girder. Any dent in painted girder to be rectified at site by the agency.

Transportation to LC no.448 site

Transportation to LC no 184 Site

Stud shear connector - supplying. 5000 Nos manufacturing, fabrication testing and welding with welded by STUD welding machine (with all contractor consumable) compatible with type of STUD on composite steel girder, conforming to IS:3935-1966 of diameter 25 mm and height 200mm and as per RDSO drawing no. RDSO/B-11754/R3& 11751/R3 with all alteration and as per approved drawing of railway and as per direction of Engineer-in charge inclusive all. The stud should pass the test prescribed in above mentioned drawing and relevent specification before and after welding in the girder.

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