Addendum No.1 : TENDER ECV-102 – CMRL –Phase I- Extension – Washermenpet to Wimco Nagar– “Construction of elevated viaduct from CH 6151.00 to CH 9000.00 (2.85 km) for standard gauge twin track Metro rail including 400m depot approach and Three elevated stations- Gowri Ashram, Tiruvottiyur and Wimco Nagar, Architectural, Plumbing, roofing, Signage including design of temporary works (Scaffolding, staging etc.) traffic diversion, utility shifting and all associated works excluding Piles and Pile caps from ch :7700 m to ch: 8544.72 m.