Relationship Model Between Conceptual Cost Estimation Process of Flyover Development in the Provincial Government of DKI Jakarta with the Accuracy Level

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The conceptual cost estimate for flyover development is the cost estimate when the flyover construction does not yet have complete planning data. In the DKI Jakarta Provincial Government, the forecast is used for the proposed flyover construction budget in the 5 Year Strategic Plans and Multi-Year Activities. In the estimation process, there is a level of accuracy that still needs to be improved, which causes the regional development planning to be less effective because other allocations have shifted in priority. Various factors can cause this in the estimation process that affects the level of accuracy. This study aims to identify the factors or variables in flyover construction's conceptual cost estimation process in the DKI Jakarta Provincial Government that affect accuracy. And then, to analyze the model of the relationship between variables of conceptual cost estimation process to the level of estimation accuracy, using the SEM-PLS method. 8 variables in the conceptual cost estimation process, which affect the estimation accuracy, have been identified through literature studies and expert validation. The variables are information quality, scope quality, estimator performance, estimating procedures, project definition, cost information, project characteristics, and government regulations. Based on respondents’ results and the relationship model's analysis with the SEM-PLS method, the model produces 12 significant relationships between the variables of the conceptual cost estimation process for flyover development, with an R-square value of 0, 279.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Rehabilitation and Maintenance in Civil Engineering - ICRMCE 2021
EditorsStefanus Adi Kristiawan, Buntara S. Gan, Mohamed Shahin, Akanshu Sharma
PublisherSpringer Science and Business Media Deutschland GmbH
Pages913-932
Number of pages20
ISBN (Print)9789811693472
DOIs
Publication statusPublished - 2023
Event5th International Conference on Rehabilitation and Maintenance in Civil Engineering, ICRMCE 2021 - Virtual, Online
Duration: 8 Jul 20219 Jul 2021

Publication series

NameLecture Notes in Civil Engineering
Volume225
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference5th International Conference on Rehabilitation and Maintenance in Civil Engineering, ICRMCE 2021
CityVirtual, Online
Period8/07/219/07/21

Keywords

  • Accuracy
  • Conceptual cost estimation process
  • Flyover development
  • Structural equation modeling

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