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Open Access
Article
Publication date: 29 December 2022

Eziaku Onyeizu Rasheed and James Olabode Bamidele Rotimi

Achieving an appropriate indoor environment quality (IEQ) is crucial to a green office environment. Whilst much research has been carried out across the globe on the ideal…

Abstract

Purpose

Achieving an appropriate indoor environment quality (IEQ) is crucial to a green office environment. Whilst much research has been carried out across the globe on the ideal IEQ for green offices, little is known about which indoor environment New Zealand office workers prefer and regard as most appropriate. This study investigated New Zealand office workers' preference for a green environment.

Design/methodology/approach

Workers were conveniently selected for a questionnaire survey study from two major cities in the country – Wellington and Auckland. The perception of 149 workers was analysed and discussed based on the workers' demographics. The responses to each question were analysed based on the mean, standard deviation, frequency of responses and difference in opinion.

Findings

The results showed that workers' preferences for an ideal IEQ in green work environments depend largely on demographics. New Zealand office workers prefer work environments to have more fresh air and rely on mixed-mode ventilation and lighting systems. Also New Zealand office workers like to have better acoustic quality with less distraction and background noise. Regarding temperature, workers prefer workspaces to be neither cooler nor warmer. Unique to New Zealand workers, the workers prefer to have some (not complete) individual control over the IEQ in offices.

Research limitations/implications

This study was conducted in the summer season, which could have impacted the responses received. Also the sample size was limited to two major cities in the country. Further studies should be conducted in other regions and during different seasons.

Practical implications

This study provides the opportunity for more studies in this area of research and highlights significant findings worthy of critical investigations. The results of this study benefit various stakeholders, such as facilities managers and workplace designers, and support proactive response approaches to achieving building occupants' preferences for an ideal work environment.

Originality/value

This study is the first research in New Zealand to explore worker preferences of IEQ that is not limited to a particular building, expanding the body of knowledge on workers' perception of the ideal work environment in the country.

Details

Smart and Sustainable Built Environment, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2046-6099

Keywords

Article
Publication date: 8 July 2022

Achini Shanika Weerasinghe, Eziaku Onyeizu Rasheed and James Olabode Bamidele Rotimi

This paper aims to investigate building managers’ approach towards occupant energy behaviours and rationalises organisational energy culture concerning their strategy to…

Abstract

Purpose

This paper aims to investigate building managers’ approach towards occupant energy behaviours and rationalises organisational energy culture concerning their strategy to address occupants’ preferences in New Zealand tertiary office buildings.

Design/methodology/approach

The research used grounded theory analysis by interviewing a purposive sample of 25 participants from a university. Also, semi-structured interviews were conducted with facilities managers, sustainability managers and building occupants.

Findings

The study results revealed that building managers oversimplify the multi-domain discomfort, energy impacts from occupant behaviours and the influence of social-psychology aspects on occupants’ actions. The organisational energy culture can be further improved by increasing occupants’ knowledge and awareness of energy, sharing energy feedback with occupants to make energy conscious occupants and giving them responsibilities to achieve the organisation’s energy targets.

Originality/value

This study enables opportunities to promote collaboration between building managers and occupants by comparing perspectives on occupant energy impacts.

Details

Facilities , vol. 40 no. 11/12
Type: Research Article
ISSN: 0263-2772

Keywords

Article
Publication date: 8 August 2017

Eziaku Onyeizu Rasheed and Hugh Byrd

The purpose of this literature review is to investigate the reliability of self-evaluation as a method for measuring the effect(s) of indoor environment quality (IEQ) on…

Abstract

Purpose

The purpose of this literature review is to investigate the reliability of self-evaluation as a method for measuring the effect(s) of indoor environment quality (IEQ) on the productivity of office workers. The aim of this review is to identify the various constraints to its adequacy in measuring productivity.

Design/methodology/approach

Thirty studies were selected from peer-reviewed sources and reviewed on their method of measuring productivity. These studies used self-evaluation (questionnaires or interview) as the sole method of measuring the effect of IEQ on productivity/performance.

Findings

This review provides insight on the insufficiencies and biases prevalent in self-evaluation. Various issues that compromised the reliability of self-evaluation results in an office environment were discussed. It was concluded that self-evaluation is not reliable and does not accurately measure occupant productivity.

Research limitations/implications

This study has been a review of past studies and their findings. Further studies that will provide empirical evidence are required to solely test the reliability of self-evaluation in measuring productivity and the effect of factors such as IEQ on it.

Practical implications

The paper calls for further debate on occupant productivity measurement and how the various factors that affect it can be quantified into measurable entities.

Originality/value

This paper fulfils an identified need to revisit the technique of self-evaluation as a method for measuring occupant productivity.

Details

Facilities, vol. 35 no. 11/12
Type: Research Article
ISSN: 0263-2772

Keywords

Article
Publication date: 21 January 2019

Danielle Ashcroft, Temitope Egbelakin, John Jing and Eziaku Onyeizu Rasheed

The purpose of this paper is to examine the economic viability of a new and innovative seismic damage resisting system (SDRS) device by conducting a feasibility study. The…

Abstract

Purpose

The purpose of this paper is to examine the economic viability of a new and innovative seismic damage resisting system (SDRS) device by conducting a feasibility study. The SDRS device has been patented and specifically designed to be implemented in multi-storey modular buildings in seismic regions such as New Zealand.

Design/methodology/approach

Using a case study approach, two sample modular multi-storey buildings were purposively selected for the study. A cost-comparison analysis was conducted using the SDRS device in the two buildings, by carrying out a measure and price exercise of the construction elements.

Findings

The research results showed that the SDRS device is an economically viable option for mitigating seismic damage in modular multi-storey buildings in New Zealand. There is an average of 7.34 per cent of cost reduction when SDRS is used in modular multi-storey buildings when compared to other seismic resistance systems such as base isolation, moment resisting frames and friction damper systems.

Practical implications

The economic viability of the SDRS presents an opportunity for its usage in modular design and construction of multi-storey buildings. SDRS system is also applicable to other building typologies and construction methods. The use of SDRS also aligns with the current national objective to provide more affordable and resilient housing within a limited time; the opportunity is considered significant in New Zealand, including for export and manufacturing.

Originality/value

The confirmation of the SDRS device’s economic feasibility is the original contribution of the authors.

Details

Journal of Engineering, Design and Technology, vol. 17 no. 2
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 27 March 2020

An Thi Hoai Le, Niluka Domingo, Eziaku Onyeizu Rasheed and Kenneth Sungho Park

This paper aims to develop an integrated and comprehensive framework for building and property management (BAPM) for state schools in New Zealand. The results are expected…

Abstract

Purpose

This paper aims to develop an integrated and comprehensive framework for building and property management (BAPM) for state schools in New Zealand. The results are expected to clarify the complicated process and provide a guide for school boards to manage their property effectively and efficiently. It also seeks to explore the relationship between the key stakeholders and how this impacts the BAPM.

Design/methodology/approach

In addition, to review literature, qualitative data were obtained through semi-structured interviews with 16 top managers in state schools. The data analysis results were used to develop the framework using the integration definition for process modelling.

Findings

The findings contribute to understanding the processes in the BAPM in state schools of school board members by adding input, output, control and mechanism elements in each activity of the processes. The systematic models with main activities and people involved are presented as a guide for school boards in state schools in New Zealand. Challenges and issues in the processes are also identified to draw further study for both school boards and the Ministry of Education.

Research limitations/implications

The research was conducted with the participation of stakeholders who are sampled from top managers in state schools in New Zealand. A larger scale of participants from other schools may generalise the findings further.

Practical implications

The research findings are based on the needs and requirements of the stakeholders to understand, implement and control the BAPM for their schools and aid them to achieve the best value for money spending on the management.

Originality/value

The paper highlights the complexity of the BAPM in schools, presents the roles and responsibilities of the school stakeholders and proposes a systematic framework to assist the school managers in this management process.

Article
Publication date: 11 October 2022

Achini Shanika Weerasinghe, Eziaku Onyeizu Rasheed and James Olabode Bamidele Rotimi

Better identification of comfort preferences and occupant behaviour drivers is expected to improve buildings’ user-centred designs and energy operations. To understand the…

Abstract

Purpose

Better identification of comfort preferences and occupant behaviour drivers is expected to improve buildings’ user-centred designs and energy operations. To understand the underline drivers of occupant behaviours in office buildings, this study aims to evaluate the inter-relationships among occupant energy behaviours, indoor environmental quality satisfaction, user control and social-psychological factors influencing occupant behaviours in New Zealand offices.

Design/methodology/approach

Using an occupant perception survey, this study identifies the occupant behaviour patterns based on multi-domain comfort preferences. A case study was conducted in five office spaces of a university in Auckland, New Zealand. Data were collected from 52 occupants and analysed using descriptive and binary logistic regression analysis. Indoor environmental quality, user control, motivational, opportunity and ability factors were the independent variables considered. A model to predict the behaviours using environmental, building and social-psychological aspects was developed.

Findings

The results showed that the primary sources of indoor environmental quality discomfort were related to thermal and air quality, while occupants’ indoor environmental quality satisfaction correlated with their comfort preferences. The outcomes emphasise how the connection between building systems and occupants’ comfort preferences affect the choice of occupant behaviours in offices. Also, the primary occupant behaviours were drinking hot and cold beverages, opening/closing windows and internal doors and adjusting clothing. The binary logistic regression analysis showed that occupants’ perceived user control satisfaction is the main driver for increasing window actions. No other independent variable showed a statistically significant association with other behaviours.

Originality/value

This study adopted a novel approach to assess the combined effects of comfort preferences, occupant energy behaviours and various environmental, building and socio-psychological factors for modelling energy-saving behaviours in office buildings.

Details

Journal of Facilities Management , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1472-5967

Keywords

Article
Publication date: 7 August 2017

Jasper Mbachu, Temitope Egbelakin, Eziaku Onyeizu Rasheed and Wajiha Mohsin Shahzad

This study aims to answer the ‘what’ and ‘how’ questions about the key role players’ influence on the overall productivity outcomes in the lifecycle of residential…

Abstract

Purpose

This study aims to answer the ‘what’ and ‘how’ questions about the key role players’ influence on the overall productivity outcomes in the lifecycle of residential buildings procured through the traditional route.

Design/methodology/approach

A mix of exploratory and descriptive research methods was used to obtain feedback from 179 role-players involved in various phases of the residential building lifecycle (RBLC) in New Zealand. Empirical data were analysed using content analysis, multi-attribute method and Friedman’s two-way analysis of variance.

Findings

Results showed that designers, building owners, main contractors and project managers were the greatest influencers of the productivity outcomes in the RBLC. The priority drivers of these key role-players’ influences on the RBLC productivity outcomes comprised poor brief interpretation, inclination to lowest tender, inadequate prior risk analysis and miscommunication of owner’s requirements and preferences to service providers, respectively. By taking proactive steps to redress their productivity inhibiting acts/omissions as identified in this study, the various role-players could contribute to significant improvement of productivity outcomes in the building lifecycle.

Research limitations/implications

It was not possible to interview all participants that made up the representative random samples from each role-player group due largely to workload related excuses. As a result, the findings and the conclusions may not be generalised beyond the study scope. However, the study achieved its purpose, as the main intent was to provide hypothetical constructs that could guide further confirmatory/experimental studies for residential buildings as well as for other building types.

Practical implications

A succinct and easy-to-follow model was developed as implementation pathway for operationalising the key findings of the study in the industry. The model highlights the Owner-Architect-Contractor Influence Triangle (OACIT) as the 20 per cent of the solutions that could deliver 80 per cent of the productivity improvement in the RBLC.

Originality/value

This study re-examines productivity issues not only from a life-cycle perspective but also from the perspectives of the majority of the key role-players. In addition, the OACIT concept offers a novel productivity improvement tool; it stresses that productivity in the traditionally procured building lifecycle could be optimised if the architect could focus greater attention on brief articulation and the issuance and review of design and specification information. Also, the owner should adopt productivity-enhancing procurement and contract strategies and emphasise more on value-addition and less on lowest tender price.

Details

Journal of Engineering, Design and Technology, vol. 15 no. 4
Type: Research Article
ISSN: 1726-0531

Keywords

Content available
Article
Publication date: 16 February 2021

Per Anker Jensen

161

Abstract

Details

Facilities, vol. 39 no. 3/4
Type: Research Article
ISSN: 0263-2772

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