Appropriate budget contingency determination for construction projects: State-of-the-art

Contingency is a critical component in the cost estimation process for any construction project. The contingency reserve considers potential costs related to risks and uncertainties associated with construction projects. It is usually assumed to damp any resulting uncertain monetary impact and to pr...

Full description

Bibliographic Details
Main Authors: Taher Ammar, Mohamed Abdel-Monem, Karim El-Dash
Format: Article
Language:English
Published: Elsevier 2023-09-01
Series:Alexandria Engineering Journal
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1110016823006178
_version_ 1797736894019141632
author Taher Ammar
Mohamed Abdel-Monem
Karim El-Dash
author_facet Taher Ammar
Mohamed Abdel-Monem
Karim El-Dash
author_sort Taher Ammar
collection DOAJ
description Contingency is a critical component in the cost estimation process for any construction project. The contingency reserve considers potential costs related to risks and uncertainties associated with construction projects. It is usually assumed to damp any resulting uncertain monetary impact and to prevent project cost overrun. Many contingency calculation methods for construction projects proposed in literature ranged from simple percentage to complex mathematical methods. Deciding the optimum contingency method for a given project at a given phase represents the main challenge in cost estimation process. This study presents a comprehensive compilation of all contingency calculation methods and divided them into three main groups: deterministic, probabilistic, and modern mathematical methods which have been discussed in details. Appropriate method for estimating contingency amount depends on many criteria such as project peculiarity, complexity, ease of method used, and the accuracy level of the estimates. This study proposed a practical guidance approach for construction agencies to choose their appropriate cost contingency method.This research is expected to help agencies/owners in the budget development stage to allocate a contingency budget for their construction projects.
first_indexed 2024-03-12T13:19:58Z
format Article
id doaj.art-fc93dde3b9364432abea33c7110b92f7
institution Directory Open Access Journal
issn 1110-0168
language English
last_indexed 2024-03-12T13:19:58Z
publishDate 2023-09-01
publisher Elsevier
record_format Article
series Alexandria Engineering Journal
spelling doaj.art-fc93dde3b9364432abea33c7110b92f72023-08-26T04:42:54ZengElsevierAlexandria Engineering Journal1110-01682023-09-017888103Appropriate budget contingency determination for construction projects: State-of-the-artTaher Ammar0Mohamed Abdel-Monem1Karim El-Dash2Corresponding author.; Faculty of Engineering at Shoubra, Benha University, Postcode 11629, EgyptFaculty of Engineering at Shoubra, Benha University, Postcode 11629, EgyptFaculty of Engineering at Shoubra, Benha University, Postcode 11629, EgyptContingency is a critical component in the cost estimation process for any construction project. The contingency reserve considers potential costs related to risks and uncertainties associated with construction projects. It is usually assumed to damp any resulting uncertain monetary impact and to prevent project cost overrun. Many contingency calculation methods for construction projects proposed in literature ranged from simple percentage to complex mathematical methods. Deciding the optimum contingency method for a given project at a given phase represents the main challenge in cost estimation process. This study presents a comprehensive compilation of all contingency calculation methods and divided them into three main groups: deterministic, probabilistic, and modern mathematical methods which have been discussed in details. Appropriate method for estimating contingency amount depends on many criteria such as project peculiarity, complexity, ease of method used, and the accuracy level of the estimates. This study proposed a practical guidance approach for construction agencies to choose their appropriate cost contingency method.This research is expected to help agencies/owners in the budget development stage to allocate a contingency budget for their construction projects.http://www.sciencedirect.com/science/article/pii/S1110016823006178Construction projectCost estimationCost contingencyEstimation method
spellingShingle Taher Ammar
Mohamed Abdel-Monem
Karim El-Dash
Appropriate budget contingency determination for construction projects: State-of-the-art
Alexandria Engineering Journal
Construction project
Cost estimation
Cost contingency
Estimation method
title Appropriate budget contingency determination for construction projects: State-of-the-art
title_full Appropriate budget contingency determination for construction projects: State-of-the-art
title_fullStr Appropriate budget contingency determination for construction projects: State-of-the-art
title_full_unstemmed Appropriate budget contingency determination for construction projects: State-of-the-art
title_short Appropriate budget contingency determination for construction projects: State-of-the-art
title_sort appropriate budget contingency determination for construction projects state of the art
topic Construction project
Cost estimation
Cost contingency
Estimation method
url http://www.sciencedirect.com/science/article/pii/S1110016823006178
work_keys_str_mv AT taherammar appropriatebudgetcontingencydeterminationforconstructionprojectsstateoftheart
AT mohamedabdelmonem appropriatebudgetcontingencydeterminationforconstructionprojectsstateoftheart
AT karimeldash appropriatebudgetcontingencydeterminationforconstructionprojectsstateoftheart