Southern Railway Tender

Provision of inspection platform in Major Bridges at various locations in DEN/East/TPJ Jurisdiction.(List of bridges attached under 'Document tab')

Supply, Providing and fixing Glass fiber reinforced polymer (GRP) Walk way Refugee Platform on the out side of Ballast retainer slab of existing Bridges including Supply and fixing of GRP platform (1000mm width) structure connecting trolley refugees, with mounting brackets to Bridge proper at 1500 mm c/c distance (or) as per approved drawing using SS 316 anchor fasteners as per drawing duly drilling the bridge structure in the sides, without affecting its design considerations by removing/scooping the ballast under traffic conditions during day or night as per the availability of traffic block and providing steel bolts of approved size as per drawing through the holes provided in the bridge with stainless steel plates on both sides of the holes and fixing the GRP Hand rails of 1m height with the mounting brackets provided, Laying the GRP walk way over the frame in the specific arrangements provided and fixing the same to the frame with suitable locking arrangements/ brackets, etc. Complete as directed by the Engineer in charge of the work. The rate quoted is including all costs for lighting, scaffolding, temporary platform arrangements for the safety of workers/supervisors, cost of drilling, cost of SS bolts & nuts of approved diameter, length, etc. and 1 cleaning, laying net covering the span in work to act as a catch for accidently falling labor, hirecharges for power supply arrangements required for the site, leading of materials from factory to site of work and leading the same to work spot etc. complete the work. The material supply should confirm the specification mentioned in the Railway's approved Drawing and other GADs and also technical specification mentioned in ANNEXURE-I. The work to be executed as per the Railway approved Drawing of the particular bridge. Special conditions: 1) The detailed drawings with design calculations and specifications for anchors, support brackets, GRP Platform, Hand railing, etc shall be submitted by the firm and shall be got approved by CBE's office before execution of the work. 2) A model platform with two brackets in the middle of the span shall be erected and load tested and certified in all aspects by the Engineer-in- charge before carrying out the work. 3) The PSC Structure shall not be disturbed during execution and this shall be ensured in the design and working methodology. 4) The working platform arrangements shall not infringe SOD and the same shall be got approved by the Engineer-in-charge. 5) The strength and stability of the existing RCC ballast retainer available in the bridge is to be checked and certified by the Engineer-in-charge before carrying out the work. If required, appropriate strengthening works to the existing RCC Ballast retainer is to be done ( Sepertate payment will be made under relevant item for strengthening works) , before carrying out the provision of GRP Keyman's pathway work.

Dumping of cleaned ballast (after attending the works for drainage arrangements) from the edge of PSC sleepers up to side walls to the required depth of 450mm in stages duly removing the wooden supports wherever provided and as directed by the Engineer-in-charge.

Supply and fixing of anchor bolts of suitable sizes conforming to relevant 3 Codes/Specification in pier/abutments with proper nuts,washers etc.,drilling holes of required size, grouting of holes by epoxy mortar after fixing anchor bolts with all material, labour,tools and plants,consumables etc., complete by the contractor and as directed by the Engineer's representative

Providing and fixing railing used in rows for footpath or anti-crash barrier railing with B class G.I. pipe 25 mm nominal dia including cost of M.S. angle and channels in vertical posts, welding 4 / bolting, priming painting with one coat ready mix Zinc Chromate conforming to IS:104 with DFT of 25-30Microns, followed by one coat of Zinc Chrome red oxide conforming to IS:2074 with DFT of 25 Microns with all material, labour, T&P as a complete job. Note: Cost of painting shall be paid extra under relevant item

Supply and fixing of galvanised 6 mm thick M.S CHEQUERED GANGWAY / PATHWAY PLATE of 500mm wide as per requirement with neccessary bolts and nuts or by tack welding, drilling 5 holes in the pathway plates if required, fixing with galvanised bolts without causing any damage to the fabricated members / frames with all labour, materials, galvanised bolt & nuts/welding, tools and plant, consumables etc., complete by the contractor and as directed by the Engineer's representative. Note: The thickness of galvanising should be 100+/-5 microns.

Rebar scanning of Existing Bridge Pier, Wing wall, Abutment, trestle beam and etc., Identification of reinforcement in existing concrete structures in depth of 300mm using an 6 electromagnetic method is developed to locate the position of the steel rebar with scanning machine to make Bosch, Stanlay, etc., having the range of 250 to 300mm.The works includes all labour, material, lead, lift, transportation, tools and plants, scaffolding, scanning and Power supply Complete by the contractor and also as directed by the engineer-in-charge.