Assessing the Contribution Factors for the Enhancement of Green Building Index ( GBI ) in the Malaysian Construction Industry

This research paper focuses on the several most crucial organisation factors that directly infl uence the Green Building Index (GBI) in the Malaysian construction industry. The fi ndings of the paper are based upon a comprehensive literature search and empirical studies conducted with 102 construction fi rms in Malaysia. All these fi rms are selected based on fi rm sizes of 50 people and above within the organisation. Seven internal organisation factors are correlated with fi ve external factors for the improvement of the green construction organisation. The study used Canonical correlation methods to correlate simultaneously the internal factors to the assessment of the improvement for the organisation. In summary it can be stated that the overall level of organisation factors are medium and there are rooms for improvement. The most important internal factors that infl uence the Malaysian construction projects were found to be ‘Environmental/Green Technology’, ‘Training’ and ‘resistance to change. The least important factors were documentation and usage of computer technology. On the other hand, external factors that infl uence projects green performance were found to be ‘Integration with Environmental Management’, ‘New Approaches to Management’ and ‘Shifting Customer Expectations’ The fi ndings suggest that the integration of several factors as the preferred option for the enhancement of the green performance within the Malaysian Construction Industry. Senior Management can utilise these factors to assess their strengths and weaknesses on the organisation practices necessary for the effective deployment in construction projects.


INTRODUCTION
This paper presents the fi ndings of the contribution factors that applicable to the development of Green Building Index (GBI) in Malaysia.The literature review establishes that signifi cant amount has already been written on within the Malaysian context, however little research has been conducted to investigate and thus developing the sustainability and green policy as outlined in the 11 th Malaysian Master Plan.Against this background and with the growing of Malaysian economy, customers have had much choice of products.Recent years had seen much attention and initiatives provided by government of Malaysia in the effort to bring the local construction industry up a par with those of developed countries (Sim 2015).Wider choices have elevated quality requirements and pose another challenge.In this dynamic marketplace, companies are under competitive pressure to become more customer focused and more cost effective management plan is just the starting to continuously improvement in quality towards sustainability (Low and Leong 2001).Therefore, there is an urgent need for green management system that applicable to the Malaysian construction industry that is easy of use, adaptable, fl exible and environmentally friendly.
In Malaysia, Construction Industry Development Board (CIDB) has initialised the Green Technology programme since 1999 as an environmental development programme initiative with the establishment of ''Technical Committee'' known as "TC9".The committee identifi ed the main direction and several proposals in order to strengthen environmental practice in construction industry.The purpose of the establishment of the technical committee is to help CIDB to identify, prepare and develop the Construction Industry Standard (CIS), guidelines manual, technical reports, training modules and other materials associated with green technology in the construction industry.All of the taken initiatives and conducted programmes proved CIDB's strong commitment in improving and strengthening best green technology practices in the construction industry in Malaysia (CIDB Malaysia 2013).
Issues of sustainability have been duly highlighted in the Construction Industry Master Plan (2011)(2012)(2013)(2014)(2015) as being of a new benchmark for the Malaysian construction industry.This is crucial in the view of much attention being paid to environmental issues.Green Building Index (GBI) was developed by both Pertubuhan Arkitek Malaysia (PAM) and the Association of Consulting Engineers Malaysia (ACEM) in 2009.Both of this organisation work hand in hand to lead the construction industry towards sustainability.From its beginning, GBI has received full support of Malaysia government and construction players.It is an initiative to promote sustainability and create more eco-friendly product in the construction and raise awareness among stakeholders.Previous studies (Lam et al. 2009) have proposed green specifi cation guides and a common database for overcoming the diffi culties in applying green building practice in the industry.A model for green specifying is considered necessary for striving ahead in raising the awareness of stakeholders towards sustainable construction.
Thomson and El-Haram (2014) stated that action plans is paramount in sustainability.It has a future for managing the delivery of sustainability through project management.Construction players not merely look at time, cost, quality and safety but there is a need to ensure a sustainability action plan is developed from inception to the post construction period.This is the basis of the project management so that an active consistent approach can be initiated.This research has been carried out in an attempt to assess the contribution factors for the application of green management in the Malaysian construction industry.The government, semi government and private sector are eager to develop such a framework.With the contribution factors carried out in this research, it can further enhance and intensify the practice of sustainability in Malaysia.These factors can be the interest of developers and contractors in Malaysia.The internal and external factors will act as mediator and linkage for the betterment of the construction quality model framework and thus contribute to the body of knowledge.

METHODOLOGY
In this section, the methodology used a measurement instrument procedure, the data sample collected in this research being further analysed and presented.It is chosen for its simplicity and availability in any industry.The measurement instrument follows previous researchers' measures (Chileshe & Watson 2003;Chileshe & Watson 2004;Watson & Chileshe 2003;Chileshe & Sim 2007).
In this paper, there are several ways to achieve the aim of the research.Referring to Figure 1, Preliminary factors (internal and external) have been identifi ed in previous research.This research aims to take a step ahead to draw a linkage to green management practices in Malaysia.This is done through confi rmatory factor analysis (CFA).It is carried out for all the constructs.Content validity at the item level measures the target or content domain which it is supposed to measure and as the instrument has been developed based on the effective management of complex change (Abraham et al. 1997) and the 'Internal external factors', therefore ensuring validity since the instrument has been previously tested in several studies ranging from manufacturing to services.Then, the reliability issues are addressed through the following measures is used in this paper for the reliability tests namely; Cronbach Alpha and Kaiser-Meyer-Oklin (KMO) sampling.Because of the small sample, a measure of the sampling adequacy using the Kaiser-Meyer-Oklin (KMO) was carried out and the results obtained was a value of 0.768.It is recommended that the value of KMO should be greater than 0.5 if the sample is adequate (Field 2000).The result of 0.791 indicates that the analysis was strongly supported for each factorial determination.The KMO statistic varies between 0 and 1, and is defi ned as a method for comparing the magnitude of the correlation coeffi cients to the magnitudes of the partial correlation coeffi cients.
The importance of developing validate measures are articulated by several researchers (Nunnally 1978;Saraph et al. 1989;Madu 1998).Several dimensions of validity need to be run such as content validity, construct validity and criterion-related validity (Flynn et al. 1994).There are several development process in order to achieve that.The multidimensionality which is a mandatory condition for construct validity and reliability checking is addressed through a measurement model not shown in this paper was specifi ed for the two constructs identifi ed as management practices and internal/external factors.
The sample for the study consisted of 463 Malaysian constructional related organisations randomly selected from the CIDB Malaysia list of database.A total of 122 organisations responded giving a response rate of 25%.Twenty of the responses were unusable due to incomplete data.The data collected from analyses are based on the remaining 102 organisations.An internal consistency analysis was carried out to the twelve internal and external factors.Both instruments had high Cronbach alpha values with the motivation for certifi cation achieving 0.753 and 0.813 indicating a high reliability as values are > 0.7.(Nunnally 1978).While the internal and external factors instrument had a high reliability (0.7575 and 0.7659).This item displayed a strong positive relationship to the total indicates the question that is good on reliability and thus affecting the fi ndings from the whole scale.

DISCUSSION OF FINDINGS
Figure 2 shows that the position of individual respondents were assessed and the majority of the respondents workers were 22 director2/assistant director2 (23%), three head of fi nance/marketing (3%), seven (7%) quantity surveyors, fi fteen (15%) project and construction managers, six (6%) architects, eighteen (18%) engineers, one (1%) lecturer, eight (8%) consultants, eight (8%) quality managers, fi ve (5%) FIGURE 1. Research process FIGURE 2. Background of respondents environmental consultants and another nine (9%) not stated due to privacy issue.Furthermore, each had been involved in the construction industry for a considerable period with a maximum of forty years and minimum of three years.This implies that they had enough knowledge and practical experience within the quality and green management system.Referring to Figure 3, the level of understanding of environmental management is signifi cant (93%) and only 7% are not aware of it.
Each and every of the external factors is considered having signifi cant effect on green implementation.These are shown by mean value ranging from 3.6040 to 3.3663 (all items above 3.00) as shown in Table 2.However, just three highest mean values on top of the list will be selected for analyst.The reason behind is to incorporate only the external values that are considered more important into the research framework.Therefore, only three variables are chosen i.e. 'Integration with Environmental Management', 'New Approaches to Management' and 'Shifting Customer Expectations' which has value of 3.6040, 3.5149 and 3.4509 respectively.A small standard deviation for external factors means that the values in a statistical data set are close to the mean of the data set, on average.

RELIABILITY OF DATA
The analysis will be meaningless unless the questionnaire is reliable.Reliability is the ability of the questionnaire to consistently measure the topic under study at different times and across different populations.(Hinton et al. 2004).The most popular method is the Cronbach's Alpha.Each and every of the internal factors is considered having signifi cant effect on green implementation.These are shown by mean value ranging from 3.3030 to 3.6733 (all items above 3.00) as shown in Table 1.However, just three highest mean values on top of the list will be selected for analyst.The reason behind is to incorporate only the internal values that are considered more important into the research framework.Therefore, only three variables are chosen i.e. 'Environmental/Green Technology', 'Training' and 'resistance to change' which has value of 3.6733, 3.4455 and 3.3960 respectively.Basically, a small standard deviation for internal factors means that the values in a statistical data set are close to the mean of the data set, on average.Cronbach's Alpha ranges from 0 to 1.The higher the number, the more reliable is the sets of questionnaire.After the reliability test, it is found out that all section for the construction quality model is reliable.This is shown by the Cronbach's Alpha value of between 0.7575 and 0.7865.Nunnally (1978) recommended that a value of 0.7 should be achieved.It is assumed that if alpha for any scale is greater than 0.7 then it is acceptable.As shown in Table 3, the eleven variables are considered acceptable.These are the average of 11 items for the model framework.While 0.7575 is the value for the 3 internal factors, 0.7659 for external factors, 0.7592 for management practice variables and 0.7865 for cultural values variables.All variables displayed a reasonable positive relationship and reliable.In the words, the results of all variables are reliable.These again reconfi rm the research fi ndings.
In this research, there are four test used to determine the reliability of data presented in regression in Minitab.The four are -Normality test from histogram (Figure 4), multicolinearity and auto correlation (Table 4), and normal probability plot (Figure 5).The results of regressions are as follows:

Relationship -Internal External Factors to Green Policy
The normality test of histogram is evenly distributed.The Normal probability plot test is along the positive relationship of linear line with just a few residuals.The constant VIF (1.399 to 1.704) of multicolinearity test is less than 7 which is good and the result of Durbin Watson statistic (2.2368) of autocorrelation test is between 1.5 and 2.5, which is acceptable.Since relationship passed all the four tests of regression, we can conclude that relationship of internal and external factors towards green policy is statistically reliable (signifi cant).Therefore, the hypothesis of the relationship is supported.
From the above regression analysis, we can conclude that the model suggest is the best fi t in model as compare to the model suggest earlier.The model suggested earlier was accepted by looking at the Cronbach alpha and p-value.The latter model is better in terms of infl uencing the management practices factors.Therefore the mediator factors are accepted to further enhance the outcome of the implementation of the green policy nationwide.Based on the quantitative result analysis by using Minitab Statistical software analysis, in this research, a theoretical model was hypothesized.The intention was to combine the entire identified six internal and external factors implementation constructs into one independent variable, which was used to test the relationships between green management implementation and internal and external factors.
Referring to Table 5, the statistical analysis fi ndings revealed (Pearson> 0.400) has three very positive effects that will impact green management which are; 1) management commitment, 2) demanding global customer and 3) training.In addition, the statistical analysis fi ndings revealed Pearson correlation value of less than 0.400 but more than 0.300 shows moderate impact on green management.These factors are new approaches to management, integration with environmental management and interpreting the requirements of standard.The analysis of Pearson correlation coeffi cients obtained were acceptable thought the coeffi cient were not exceptionally high and also most of them were statistically signifi cant.The most important for the present purpose is to determine how the factors infl uence the management practice and thus affect the cultural values to bring a commended framework for new green management model in construction.
In this research, the data collected from 102 construction companies were used to assess the contribution factors for the application of green management in the Malaysian construction industry.Contrary to what was hypothesized in the models, a number of hypotheses were not confi rmed by the data.This disconfi rmation does not imply these constructs are useless or unimportant.Instead, there's a need to identify the problem areas of these constructs and implement them more effectively.The training and environmental education must be in action to ensure the successful implementation of green management.
Therefore, these constructs were identifi ed making the interpretation of these variables (constructs) more valid.Finally, there is a model framework being produced for the evaluation and adoption of green management within the Malaysian construction industry.This framework is totally formulated on the basis of the results from the research.

CONCLUSIONS
Seven internal factors correlated with fi ve different external factors for green policy deployment.In summary it can be stated that the overall level of awareness and readiness of green deployment within Malaysian Construction Organisations is medium-high.Thus, the objective of this paper which is 'Assessing the Contribution Factors for the Application of Green Building Index in the Malaysian Construction Industry' has been fulfi lled, both in an objective and subjective way.The study provided a raft of contributions, both theoretical and practical.The literature reviews for primary objectives of CIDB Malaysian and GBI has been defi ned and identifi ed.The six constructs identifi ed as the internal and external factors that can motivate deployment of green policy are just one of the pillars for the building.Motivation without the way of practices is meaningless.The in depth review from the literature is therefore important to support and sustain the constructs mentioned above.In addition, the extensive literature review managed to identify some internal and external factors such as management commitment, demanding global customer, training, new approaches to management, integration with environmental management and interpreting the requirements of standard.Although the descriptive statistics used in this research paper are taken from within the Malaysian Construction Industry, the impact of Management Practices and Internal and External factors and its associated benefi ts of Environmental Management deployment are universal and probably of interest to the other countries.

FIGURE 5 .
FIGURE 5. Internal external factor to green policy normal probability plot

TABLE 1 .
Descriptive statistics & results of internal consistency analysis for internal factors

TABLE 3 .
Reliability of data FIGURE 4. Internal external factor to green policy histogram

TABLE 4 .
Internal external factor to green policy multicolinearity and auto correlation analysis

TABLE 5 .
Pearson correlation and P-value analysis