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Article: The predictive ability of Bromilow's time-cost model

TitleThe predictive ability of Bromilow's time-cost model
Authors
KeywordsBromilow model
Cost
Duration
Linear regression
Productivity
Speed
Time
Time-costs
Issue Date2001
PublisherRoutledge. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/01446193.asp
Citation
Construction Management And Economics, 2001, v. 19 n. 2, p. 165-173 How to Cite?
AbstractBromilow's log-log time-cost (BTC) model is tested and refitted with a new set of data for Australian construction projects completed between 1991 and 1998. It is shown that, as anticipated by earlier research, different parameter estimates are needed for different project types, with smaller industrial projects taking less time to complete than the smaller educational and residential projects. This results in the development of two separate models, one for industrial projects and one for non-industrial projects. No changes in parameter estimates are needed for projects with different client sectors, contractor selection methods and contractual arrangements. Alternatives to the log-log model failed to produce any improved fit. Finally, the results are compared with previous work to indicate the extent of changes in time-cost relationships in Australian construction projects over the last 40 years. This indicates a clear improvement in construction speed over the period. Furthermore, the 'public' sector group in particular has exhibited a greater variation (up to 132%) over the years.
Persistent Identifierhttp://hdl.handle.net/10722/71543
ISSN
2015 SCImago Journal Rankings: 0.967
References

 

DC FieldValueLanguage
dc.contributor.authorNg, STen_HK
dc.contributor.authorMak, MMYen_HK
dc.contributor.authorSkitmore, RMen_HK
dc.contributor.authorLam, KCen_HK
dc.contributor.authorVarnam, Men_HK
dc.date.accessioned2010-09-06T06:32:56Z-
dc.date.available2010-09-06T06:32:56Z-
dc.date.issued2001en_HK
dc.identifier.citationConstruction Management And Economics, 2001, v. 19 n. 2, p. 165-173en_HK
dc.identifier.issn0144-6193en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71543-
dc.description.abstractBromilow's log-log time-cost (BTC) model is tested and refitted with a new set of data for Australian construction projects completed between 1991 and 1998. It is shown that, as anticipated by earlier research, different parameter estimates are needed for different project types, with smaller industrial projects taking less time to complete than the smaller educational and residential projects. This results in the development of two separate models, one for industrial projects and one for non-industrial projects. No changes in parameter estimates are needed for projects with different client sectors, contractor selection methods and contractual arrangements. Alternatives to the log-log model failed to produce any improved fit. Finally, the results are compared with previous work to indicate the extent of changes in time-cost relationships in Australian construction projects over the last 40 years. This indicates a clear improvement in construction speed over the period. Furthermore, the 'public' sector group in particular has exhibited a greater variation (up to 132%) over the years.en_HK
dc.languageengen_HK
dc.publisherRoutledge. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/01446193.aspen_HK
dc.relation.ispartofConstruction Management and Economicsen_HK
dc.subjectBromilow modelen_HK
dc.subjectCosten_HK
dc.subjectDurationen_HK
dc.subjectLinear regressionen_HK
dc.subjectProductivityen_HK
dc.subjectSpeeden_HK
dc.subjectTimeen_HK
dc.subjectTime-costsen_HK
dc.titleThe predictive ability of Bromilow's time-cost modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0144-6193&volume=19 &issue=2&spage=165 &epage= 173&date=2001&atitle=The+predictive+ability+of+Bromilow%27s+time-cost+modelen_HK
dc.identifier.emailNg, ST:tstng@hkucc.hku.hken_HK
dc.identifier.authorityNg, ST=rp00158en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/01446190150505090en_HK
dc.identifier.scopuseid_2-s2.0-0035281795en_HK
dc.identifier.hkuros61190en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035281795&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue2en_HK
dc.identifier.spage165en_HK
dc.identifier.epage173en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNg, ST=7403358853en_HK
dc.identifier.scopusauthoridMak, MMY=7101716583en_HK
dc.identifier.scopusauthoridSkitmore, RM=6603001101en_HK
dc.identifier.scopusauthoridLam, KC=7403656828en_HK
dc.identifier.scopusauthoridVarnam, M=6603450802en_HK

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