Predicting Contract Duration for Building Construction: Is Bromilow’s Time-Cost Model a Panacea?

2016 ◽  
Vol 32 (1) ◽  
pp. 05015004 ◽  
Author(s):  
Abdulaziz M. Jarkas
Keyword(s):  
Cost Model ◽  
Building Construction ◽  
Time Cost ◽  
Contract Duration

Supply chain cost model for prefabricated building material based on time-driven activity-based costing

2016 ◽  
Vol 43 (4) ◽  
pp. 287-293 ◽  
Author(s):  
Yong-Woo Kim ◽  
Seung-Heon Han ◽  
June-Seong Yi ◽  
SooWon Chang
Keyword(s):  
Sensitivity Analysis ◽  
Supply Chain ◽  
Supply Chains ◽  
Construction Industry ◽  
Cost Model ◽  
Building Construction ◽  
Activity Based Costing ◽  
Chain Management ◽  
Material Supply ◽  
Supply Chain Costs

The effect of ‘supply chain management’ can be leveraged when benefits of collaboration within and beyond the capacities of individual organizations are witnessed. One of the primary tasks in reducing total supply chain costs is to understand where the costs occur in a supply chain and how each activity impacts the total supply chain costs. Most supply chains in construction usually involve multiple entities, each one in a different process. A rebar supply chain is one example where many entities are involved in different processes. The supply chain coordinator needs a supply chain cost model, which shows how each activity impacts all supply chain costs to reduce the total costs. The research suggests a supply chain cost model using time-driven activity-based costing. The proposed cost model was applied to a building construction project, followed by sensitivity analysis identifying critical activities. This method can be adapted to analyze other fragmented material supply chains in the construction industry.

scholarly journals Characteristics of Procurement Methods in Malaysia – Comparing Design-Bid-Build, Design-Build and Construction Management

2020 ◽  
Vol 11 (3) ◽  
Author(s):  
Azeanita Suratkon ◽  
◽  
Riduan Yunus ◽  
Rafikullah Deraman ◽  
◽  
...  
Keyword(s):  
Construction Industry ◽  
Construction Management ◽  
Construction Projects ◽  
Building Construction ◽  
Technical Expertise ◽  
Time Cost ◽  
Project Complexity ◽  
Design Build ◽  
Procurement Method ◽  
Design Bid Build

Design-Bid-Build (DBB) or commonly known as Traditional method is the earliest and most prevalent procurement method used in Malaysian construction industry. Design-Build (DB) and Construction Management (CM) procurement methods were later introduced in Malaysia as an endeavour to satisfy and accommodate the increase in project complexity and the need for avoiding drawbacks of the Traditional methods. Each procurement method has different nature and possesses certain characteristics. Therefore, this study was carried out to ascertain and compare the characteristics of these three procurement methods that are implemented in building construction projects in Malaysia. A questionnaire survey was conducted among architects, consultants, contractors and owners or developers to elicit their feedback on the characteristics which were categorised into time, cost, quality, complexity and flexibility, degree of involvement and responsibility allocation and technical expertise. The findings indicated that only DB method almost fulfils all the characteristics under the six categories, whereas, DBB methods garnered agreement only for certain characteristics under time, cost, complexity and flexibility and technical expertise categories. Meanwhile, the only CM method’s characteristics that satisfy agreement from the respondents are the often used of fast track approach and lack of certainty in price. This study concludes that when a procurement method is adopted for a construction project, not all the features or characteristics will turn out as expected. There are many factors that contribute and are influential on the success in procurement methods that are worth for further investigation.

scholarly journals TIME-COST TRADE-OFF MODEL FOR TIE BEAM ACTIVITY

2018 ◽  
Vol 7 (1) ◽  
pp. 9-15
Author(s):  
Fachrurrazi Fachrurrazi ◽  
Mahmuddin Mahmuddin ◽  
Cut Yuniati Anas
Keyword(s):  
Cost Model ◽  
Project Manager ◽  
Additional Cost ◽  
Time Cost ◽  
Trade Off ◽  
Project Duration ◽  
Schedule Delay ◽  
Normal Duration ◽  
The Right ◽  
Different Characteristics

Abstract: Crashing  project duration is conducted when the project experience schedule delay. The consequence of this crashing is needed the additional cost to anticipate the delay. Choosing the right activity for the reduction will provide additional cost efficiency. The purpose of this research is to develop time-cost trade-off (TCTO) model for tie beam activity. The model was developed based on the respondent's perception through the questionnaire, and collecting the Budget Plan Report. Respondents in this study are director, estimator, and project manager at contractor who is domiciled in West Aceh District. The results showed that the tie beam can be broken down into sub activities such formwork, rebar and concrete that have different characteristics in tie beam activities based on TCTO model. Based on these conditions, the sub activities activities can be accelerated from the normal duration of the project are 60%, 50% and 60% respectively and the required additional cost is 2.88% per day, 2.93% per day, and 3.88% per day.Keywords : Project Crashing, Crash Duration, Additional cost, Model TCTO, Tie beam, West of Aceh, Formwork, Rebar work, Concrete workAbstrak: Percepatan schedule sering dilakukan ketika kemajuan proyek dinilai mengalami keterlambatan terhadap rencana awal. Konsekuensi dari percepatan schedule tersebut dapat memberikan peningkatan biaya proyek. Pemilihan aktifitas yang tepat akan memberikan efisiensi biaya tambahan. Penelitian mengkaji hanya pada aktifitas sloof sebagai aktifitas yang dipilih untuk di percepat sebagai obyek tinjauan. Tujuan dari penelitian ini adalah mengembangkan model Time-cost trade-off (TCTO) aktifitas pekerjaan sloof dalam sebuah proyek. Model tersebut dikembangkan berdasarkan persepsi responden melalui pengisian kuesioner dan data RAB. Responden dalam penelitian ini yaitu direktur, estimator, dan manajer proyek pada badan usaha kontraktor yang berdomisili di Kabupaten Aceh Barat. Hasil penelitian menunjukkan bahwa pekerjaan sloof dapat dipecah kedalam sub aktifitas seperti sub aktifitas bekisting sloof, pembesian sloof dan beton sloof memiliki karakteristik yang berbeda dalam pekerjaan sloof berdasarkan TCTO model. Berdasarkan kondisi ini, sub-aktifitas pekerjaan sloof tersebut dapat dipecepat dari durasi normal proyek secara berturut-turut adalah 60%, 50% dan 60% dan biaya tambahan yang diperlukan adalah 2.88% per hari, 2.93% per hari, dan 3.88% per hari.Kata kunci : Percepatan schedule, Durasi crash, Biaya tambahan , Model TCTO, Pekerjaan sloof, Aceh Barat, Pekerjaan bekisting, Pekerjaan pembesian, Pekerjaan pengecoran

Time–Cost Relationships in Australian Building Construction Projects

2005 ◽  
Vol 131 (2) ◽  
pp. 187-194 ◽  
Author(s):  
Peter E. D. Love ◽  
Raymond Y. C. Tse ◽  
David J. Edwards
Keyword(s):  
Construction Projects ◽  
Building Construction ◽  
Time Cost
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