Estimating using cost significant global cost models

Munns, A.K.; Al-Haimus, K. M.

doi:10.1080/014461900407383

Cited by 15 publications

(9 citation statements)

References 4 publications

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“…A study argued that the bill of quantities (BoQ) method is cumbersome to list all the items of work which draws the estimators' all attention at the preliminary stages while there should be some time saved to survey early project information available and put efforts on the cost significant items simultaneously (Munns & Al-Haimus, 2000). Pareto Analysis stated an 80/20 principle indicating that 80% of problems are often due to 20% of the causes (PMI, 2004).…”

Section: Data Descriptionmentioning

confidence: 99%

Generalized linear model-based expert system for estimating the cost of transportation projects

Chou

2009

Expert Systems with Applications

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Section: Data Descriptionmentioning

confidence: 99%

Generalized linear model-based expert system for estimating the cost of transportation projects

Chou

2009

Expert Systems with Applications

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“…Considering the nature of building services, not all items can be measured. According to the established 80/20 rule by Pareto, 20 per cent of the items that have the highest value are generally referred to as cost significant Muns and Al-Haimus (2000). One of the problems of SMM-based BoQs is the large number of small items required for estimating Muns and Al-Haimus (2000), Tas and Yaman (2005), making it difficult to identify the important items in the BoQ, while considerable effort and time is also associated with pricing the items by estimators.…”

Section: Desired Structure Of Bssmmmentioning

confidence: 99%

“…According to the established 80/20 rule by Pareto, 20 per cent of the items that have the highest value are generally referred to as cost significant Muns and Al-Haimus (2000). One of the problems of SMM-based BoQs is the large number of small items required for estimating Muns and Al-Haimus (2000), Tas and Yaman (2005), making it difficult to identify the important items in the BoQ, while considerable effort and time is also associated with pricing the items by estimators. It is therefore essential to note that not all items of building services can be measured; therefore, the identification of 20 per cent of the cost significant items of building services should be carefully considered in the development of building services SMM.…”

Section: Desired Structure Of Bssmmmentioning

confidence: 99%

Essential features of a building services standard method of measurement in Malaysia

Amuda-Yusuf

Mohamed

2015

Engineering, Construction and Architectural Management

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Purpose – The purpose of this paper is to examine the need to develop building service standard method of measurement (BSSMM) that would provide a home ground advantage and a framework for managing the cost of building services by quantity surveyors. Design/methodology/approach – A review of previous research on the rules of measurement was carried out. This exercise provides the basis for questionnaire design which was administered to quantity surveyors in Malaysia construction industry. Findings – The results indicated the need to develop BSSMM. In total, 23 variables were identified as essential features of such standard method of measurement. These variables were grouped into three categories and a priority ranking of them was carried out. The analysis revealed a strong agreement among quantity surveyors on the priority ranking of the essential features of the BSSMM. Research limitations/implications – Although, the research would assist industry stakeholders in developing BSSMM that reflects local and international best practices, there is need to further investigate how the rules of the BSSMM could be aligned with construction industry classification systems. Practical implications – The availability of information and computer technology (ICT) tools has transformed the traditional practices in the industry and offered values to quantity surveyors, but if quantity surveyors’ tools cannot be consolidated and incorporated into emerging ICT applications, then QS collaboration will be difficult, and the requirements for electronic data exchange will be impractical. Therefore, this type of standard method of measurement will facilitate cross-referencing and coordination between BoQ and other documents such as drawings, specifications and tender produced by other project participants and thereby lay efficient foundation for effective collaboration of quantity surveyors in BIM model. In addition, the BSSMM will not only comply with local industry practices, it will also be internationally compatible. Originality/value – Adoption of a structured format based on BSSMM to present building services cost information is essential in view of the increase in the value and complexity of building services in modern buildings. However, there is need to enhance quantity surveyors’ knowledge in the technology and cost management of building services so as to ensure the reliability of cost advice provided to clients. This goal would be partly achieved through education and training of Quantity Surveyors/Cost Consultants in the interpretation and use of the rules of an SMM.

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“…Munns and Al-Haimus (2000) highlighted that seminal texts in the cost management literature (Ashworth and Perera, 2015, Seeley, 1996, Ashworth and Skitmore, 1983 validates the applicability of Pareto Principle to identify cost significant items of buildings. The works of Munns and Al-Haimus (2000) and Tas and Yaman (2005) are examples of embracing 80:20 Pareto Principle to identify cost significant items from a BoQ. Hence, it is evident that 80:20 Pareto Principle is widely accepted as a popular method of identifying cost significant items of a building.…”

Section: Methodsmentioning

confidence: 99%

“…Accordingly, it can be hypothesised that 80% of the EC of a building is caused by 20% of its elements. However, BoQ items have to be grouped (to minimise the complexity by reducing the number of items) either by work packages (trades) or functional elements to identify the cost or carbon significant items as done in previous studies (See, Munns andAl-Haimus, 2000, Tas andYaman, 2005). Accordingly, BoQ items were grouped by elements (to study the cost and carbon significance of building elements irrespective of trades) in accordance with the NRM elements classification system (RICS, 2012) which is the latest measurement standard prevailing in the UK.…”

Section: Methodsmentioning

confidence: 99%

Carbon and cost critical elements: a comparative analysis of two office buildings

Victoria

Perera

Davies

et al. 2017

BEPAM

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Purpose The purpose of this paper is to identify and compare cost and carbon critical elements of two office buildings, and to help achieve an optimum balance between the capital cost (CC) and embodied carbon (EC) of buildings. Design/methodology/approach Case study approach was employed to study cost and carbon critical elements of two office buildings as it allows an in-depth and holistic investigation. Elemental estimates of CC and EC were prepared from BoQs of the two buildings by obtaining rates from the UK Building Blackbook. Pareto principle (80:20 rule) was used to identify carbon and cost critical elements of the two buildings, and the significance hierarchies of building elements were compared. Findings Substructure, frame and services were identified as both carbon and cost critical elements responsible for more than 70 per cent of the total CC and EC of both buildings. Stairs and ramps, internal doors and fittings, furnishings and equipment were identified to be the least carbon- and cost-significant elements contributing less than 2 per cent of total CC and EC in both buildings. The hierarchy of cost and carbon significance varies between buildings due to the difference in the specification and design. Originality/value The increasing significance of dual currency (cost and carbon) demands cost and carbon management during the early stages of projects. Hence, this paper suggests that focusing on carbon and cost-intensive building elements is a way forward to keep both cost and carbon under control during the early stages of projects.

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Estimating using cost significant global cost models

Cited by 15 publications

References 4 publications

Generalized linear model-based expert system for estimating the cost of transportation projects

Generalized linear model-based expert system for estimating the cost of transportation projects

Essential features of a building services standard method of measurement in Malaysia

Carbon and cost critical elements: a comparative analysis of two office buildings

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