Simplified Solution of Time-Cost Trade-off Problem for Building Constructions by Linear Scheduling

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dc.contributor.authorBettemir, Onder Halis
dc.contributor.authorYucel, Tugay
dc.date.accessioned2024-08-04T20:53:40Z
dc.date.available2024-08-04T20:53:40Z
dc.date.issued2023
dc.departmentİnönü Üniversitesien_US
dc.description.abstractTime-cost trade-off is an important optimization problem for contractors, because its optimum solution minimizes the total project cost. Formation of the time-cost trade-off problem causes an important workload, since the problem requires preparation of different construction cost and duration alternatives of the activities. Previous studies focused on the optimum solution of the problem and ignored the difficulties of the preparation of the different construction alternatives for the activities, which is a very difficult task for contractors. In this study, the creation of construction alternatives consisting of different time and cost values is automated. Quantity take-off of construction items is computed by user-defined dimensions of structural elements. Workmanship and material requirements are computed by pre-defined job descriptions and quantity take-off values. Different construction alternatives are formed by assigning different crew sizes and the corresponding construction durations are computed by estimating the job efficiency of the crew by regression models derived from the literature. Precedence relationships of the main construction items are pre-defined and the construction schedule is formed by a line of balance in terms of work days. The problem is optimized by a genetic algorithm the parameters of which are fine-tuned by experimental design. The developed approach is implemented on a spreadsheet application and the total optimization process including data entry is completed in one and a half hour on a desktop computer with i5 CPU. This study contributes to relevant literature by proposing a systematic approach for the formation of construction alternatives of the time-cost trade-off problem. The proposed approach can be beneficial for contractors and project managers to form and solve the time-cost trade-off problem with minimum endeavor and cost.en_US
dc.description.sponsorshipInonu University Scientific Research Projects Coordination [FYL-2017-593]en_US
dc.description.sponsorshipAcknowledgement This study is granted by the Inonu University Scientific Research Projects Coordination (grant no. FYL-2017-593) .en_US
dc.identifier.doi10.14525/JJCE.v17i2.10
dc.identifier.endpage309en_US
dc.identifier.issn1993-0461
dc.identifier.issn2225-157X
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85153492537en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage293en_US
dc.identifier.urihttps://doi.org/10.14525/JJCE.v17i2.10
dc.identifier.urihttps://hdl.handle.net/11616/101313
dc.identifier.volume17en_US
dc.identifier.wosWOS:000962253800010en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherJordan Univ Science & Technologyen_US
dc.relation.ispartofJordan Journal of Civil Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTime-cost trade-offen_US
dc.subjectGenetic algorithmen_US
dc.subjectLine of balanceen_US
dc.subjectOptimizationen_US
dc.subjectExperimental designen_US
dc.titleSimplified Solution of Time-Cost Trade-off Problem for Building Constructions by Linear Schedulingen_US
dc.typeArticleen_US

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