RK INFRASTRUCTURE Add-RTC- = ind Fir REF. DATE:18/02/25 Ropeway Project -Varanasi Uttar Pradesh, 221002,CLIENT-VSEPL(Vishwa Samudra Engineering Private Limited) irjaghar Ropeway Sti fabri rection methodology Client -NHA 3 hs thority of India)NHLML-National Highways Logistics Managements Limit 1. Pre-Construction Phase: Design Review: Thoroughly review structural drawings and specifications to understand the project requirements. Material Procurement:Source and order necessary steel sections, fasteners, and other materials according to project specifications. Site Preparation: Ensure foundation construction is complete and ready for steel erection. Safety Planning: Develop comprehensive safety protocols and training procedures for all site personnel. Third party inspection: TPi all tools, tackles and machines 2. Fabrication Phase: Material Inspection: Check all delivered materials for quality and compliance with design specifications. Surface cleaning: Structural sections from the grinder machine may require surface cleaning to remove surface prior to fabrication. Hand preparation, such as wire brushing, does normally conform to the requirementsof surface protection system. In some applications manual cleaning is used and depending on the quality of the cleaned surface they are categorised into Grade St-2 and Grade St-3. Cutting and Shaping: PUG machines and gas cutters, or other methods to precisely cut and shape steel members as per the drawings the steel is heated locally by a pressurised mixture of oxygen and a combustible gas such as LPG, which passes through a ring of small holes in a cutting nozzle. The heat is focussed on to a very narrow band and the steel melts at 1500° C when a jet of high-pressure oxygen is released through a separate hole in the centre of the nozzle to blast away the molten metal in globules. The desired cuts are obtained quicklyby this process. However due to a rapid thermal cycle of heating and cooling, residual stresses and distortion are induced and hence structural sections that are fabricated using flame cutting are treated specially in the design of structural steelwork. Drilling and Hole Punching: Accurately drill holes for connections and bolt placements from core cutter machines. Fitting: The component parts of a member are fitted-up temporarily with bolts or small amount of welds. The fitting-up operation includes attachment of previously omitted splice plates and other fittings. Welding: Perform required welding operations to join steel sections, ensuring proper weld quality control.We use Welding electrode and mig welding rod that approved by VSEPL. Assembly and Tack (stich) Welding: Assemble components into larger sections and temporarily tack(stich) weld them for alignment. Quality Control: Conduct regular inspections and DPT to verify fabrication and welding quality. Welding thickness test by fillet gauge. Keep the presence of test of material in the presence of client - IE and VSEPL. Dimensional Checks: Outline dimensional checks to ensure accuracy and compliance with drawings. Material Testing: Material testing procedures, including tensile testing, hardness testing. Surface Treatment:Apply necessary surface treatments like priming to protect steel components. 3. Erection Phase: Transportation and Delivery: Carefully transport prefabricated steel components to the construction site using suitable transportation methods. Crane Mobilization: Set up cranes and tifting equipment required for erection based on the project scale(Tower Crane or Mobile Crane) Lifting and Positioning: Carefully lift and place steel components into their designated positions using cranes and lifting slings. Alignment and Temporary Bracing: Precisely align components and install temporary bracing to maintain stability during erection. Final Connections: Securely connect steel members using bolts or welding as per the design specifications.Removal of Temporary Bracing: Remove temporary bracing once the structure is self- supporting. 4. Post-Erection Phase: Final Inspections: Conduct comprehensive inspections to verify alignment, connections, and overall structural integrity. Load Testing (if required): Perform load tests on the structure to verify its capacity. Finishing Work: Install cladding, roofing, and other finishing elements as per the project design. Thanking You, Yours Faithfully, For M/S. R K INFRASTRUCTURE