REPLACEMENT OF WOODEN/RUBBER BEADING FENDERS AROUND LEADING JETTY AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE(I) DM VISAKHAPATNAM

S&F Rubber Square fender of size 2000mm x 300mm x 200mm depth (or in short lengths to suit the site requirements) and fixed as kerbs on the top of sea face jetty wall with four numbers M24 SS 316 bolts of length 285mm. The fender shall be fixed with a MS galvanized flat of size 100mm X 12mm covering the full length of the fender as directed by Engineer-in-charge. The Properties of the rubber used shall be as follows :- Before aging : Tensile strength not less than 17 MPa, Elongation shall not be less than 350% as per ASTM D412, Hardness Max 70 + 5º, Shore ‘A’ as per ASTM D2240.

After aging at 96 hours at 70º : The tensile strength not less than 80%, Elongation not less than 80% as per ASTM D 412 hardness + 8º shore A as per ASTM 2240, tear strength shall not be less than 70KN/m, Compression set at 70ºC for 22 hours 25% maximum- as per ASTM D 395, abrasion resistance Maximum 1.5CC as per BS 903 A9 and Ozone resistance - no cracks as per ADSTM D 1171. All the above test reports shall be provided by the manufacturer. Necessary factory inspection during manufacturing process shall be arranged by the bidder. The fender is be pre coated with the homogeneous colour with yellow and black alternately complete all as specified and directed. Note: (i) The item rate shall include the cost of SS M24 bolt, Nuts and chemical for fixing the bolt as recommended and supplied by the manufacturer of rubber fender and including removal of old fenders. (ii) All dimensions given in this schedule precede over drawings attached and drawinngs are provided for reference and placing of fenders only.

S&F in repairs Rubber arch fender of size 2000mm x 595 / 195mm width at bottom and top respectively x 300 mm depth and fixed vertically on the vertical face of jetty sea face wall with eight numbers M24 SS 316 bolts of length 285mm as directed by Engineer-in-charge. Rubber as per ASTM D-2000-12. The Properties of the rubber used shall be as follows :- Deflection - 51.5%, Reaction force - 25.3 Ton, Energy absorption - 2.95 ton / Mtr with a tolerance of - +10%. Before aging : Tensile strength not less than 17 mpa , Elongation shall not be less than 350% as per ASTM D 412, Hardness Max 70 + 5º, Shore A as per ASTM D2240

After aging at 96 hours at 70 º : The tensile strength not less than 80%, Elongation not less than 80% as per ASTM D 412 hardness +8º shore A as per ASTM 2240, tear strength shall not be less than 70 KN/m, Compression set at 70ºC for 22 hours 25% maximum- as per ASTM D 395, abrasion resistance Maximum 1.5CC as per BS 903 A9 and Ozone resistance - no cracks as per ADSTM D 1171. All the above test reports shall be provided by the manufacturer. Necessary factory inspection during manufacturing process shall be arranged by the bidder. Note: (i) The item rate shall include the cost of SS M24 bolt, Nuts and chemical for fixing the bolt as recommended and supplied by the manufacturer of rubber fender and including removal of old fenders. (ii) All dimensions given in this schedule precede over drawings attached and drawinngs are provided for reference and placing of fenders only.

M&L for laying cement based Micro-concrete, Rendroc RG 40 of Fosroc make, pre packed single component, chloride free, sulphate free, non-shrink, free flow, self compacting , ready to use after mixing water in specified proportion of approved quality. Formwork shall be provided for placing micro concrete patch repair as required at site with steel jack system and steel props to support the form work in this application of high strength, dual shrinkage, compensated, micro concrete for placing in nominal thickness of more than 50mm for concrete repair with compresive strength of 40 Mpa at 28 days complete all as specified and directed.