This tender invites qualified contractors in Karachi to undertake the construction of nala and sewerage lines across various Union Councils of Keamari. Issued by the Lyari Development Authority, the project falls under Road & Infrastructure Works and Plumbing & Sanitary Items categories, reflecting the civil and sanitary engineering scope. The works include excavation, laying RCC pipes of various diameters, constructing manholes, and cleaning existing sewerage lines. The site demands careful handling of materials like SR cement and RCC pipes, with attention to site conditions and engineering standards. Contractors must be registered with the Pakistan Engineering Council in category C-3 or above and possess valid tax registrations. The project requires adherence to the latest SPPRA rules, including submission of a technical proposal, audited financial reports for the last three years, and compliance with the Integrity Pact for contracts exceeding PKR 10 million. The contract duration is 730 days from the notice to commence, with a 365-day defects liability period. Bid security and performance security are mandatory, with a 5% performance security of the contract price. Bidders should note the requirement for submission of bids in sealed envelopes by the deadline. The bid validity period is 90 days, and bids must be quoted in Pakistani Rupees. The contract will be awarded to the lowest evaluated responsive bidder. The submission deadline is **2024-07-05 23:59:59**, with bid opening to follow as per the procuring agency's schedule. The physical address for submission is Lyari Development Authority, Plot No. 194-B, Block-B, SMCHS, Karachi. Pro-Tip: Ensure your bid documents include all required certificates and affidavits, especially the non-blacklisting affidavit on Rs.100 stamp paper, which is often overlooked. Also, carefully check the bid amount rounding as per the High Court order to avoid disqualification.