As per the general principles of estimating, whenever practicable, it is advantageous to execute the work only after ______.

Purpose of Inviting Tenders: 

• Tenders are invited to ensure transparency, competitiveness, and cost-effectiveness in the execution of work.
• It allows multiple contractors or suppliers to bid for the project, providing the opportunity to select the most suitable one based on cost, quality, and timeline.

Conclusion: Inviting tenders is an essential step to ensure that the work is planned and executed economically, systematically, and transparently.

Additional Information

• Payments of bills are made: Payments are processed after the work has been completed, as per the agreement or milestones. It is not practical to execute the work after bill payments.
• Tenders are evaluated: While evaluating tenders is crucial, the execution starts only after tenders are awarded, not merely after evaluation.
• Purchase orders are placed: Purchase orders are specific to materials or equipment and may not always coincide with the start of construction or execution.