Computer Aided Management of Construction Payment: For Clients with Multiple Building Projects
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Date
2022-03
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Addis Ababa University
Abstract
Regular and on-time payment is critical for the successful completion of a construction project.
However, the construction industry suffers from delayed payments due to an inefficient payment
certification process. Payment delays affect material delivery, labor productivity, and project
progress and induce financial and subsequent time claims. This study proposed the breakdown of
contract conditions into a logic that can be converted into executable codes called smart
contracts that are executed on a web-based application. The system uses a centralized database
to store contract data and BOQ and a backend developed using PHP that integrates smart
contracts to automate and control payment management. The web-based application was then
tested using the data from three building projects and was found to be accurate, effective, and
efficient. Aside from creating automated payment certificates the web-based application can
check bill of quantities, update advance payment and performance guarantee amount and expiry
dates, identify various contract limits, and provide documentation tools. The result of the study
has shown that the use of smart contracts and web-based application facilitate automation,
control, and follow-up of the payment management process for clients with multiple building
projects.
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Keywords
Web-based Application, Construction Payment Management, Payment Certificate, Smart contract