PROFESSIONAL PERSPICACITY OF BUILDING PROCUREMENT ON WASTE MANAGEMENT IN CONSTRUCTION INDUSTRY

1. Department of Architecture, Faculty of Environmental Studies, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria. 2. Department of Architecture, College of Science and Technology, Covenant University, Ota, Ogun State, Nigeria. 3. Ph.D Student, Department of Architecture, College of Science and Technology, Covenant University, Ota, Ogun State, Nigeria. ...................................................................................................................... Manuscript Info Abstract ......................... ........................................................................ Manuscript History Received: 18 February 2020 Final Accepted: 20 March 2020 Published: April 2020

Despite the volume of studies related to procurement waste management in Building construction industry locally and internationally. Wastage in building procurement still posesa severe hazard to both the construction professionals' and the environment. To eliminate this, the study set to examines procurement waste management on building construction industry in southwestern, Nigeria, with a view of providing pertinent information necessary in lessening waste in building procurement industry.The study adopted questionnaire survey to elicit information from 264 built professional across (6) states in the study area, using tables to present the collected data and professional satisfactory index (PSI) to analyze the data collected. The study found that professional satisfactory index fell between ''disagree'' and ''not sure'' this translate that management support, staff knowledge, financial incentives/motivation, estimating/ordering practice, design issues, material Supply issues, material storage practice may not reduce the scourge of procurement waste in Building construction in within the study area. This study suggested that site workers, technician and craft men should be educated of every management decision concerning procurement waste management plan development across building construction project in southwestern Nigeria.
There are now more than ever clear opportunities for business and industry to invest in activities that will create profit and improve environmental outcomes by extracting valuable resources (sustainability) (Mudashiru, Oyelakin, Oyeleke, & Bakare, 2016).There isa need for effective implementation of a waste management plan (WMP) to reduce waste on construction projects (Adewuyi & Odesola, 2015). Bearing in mind the cost of storing and transporting construction waste, along with the loss of revenue from not reclaiming waste materials. This called for financial sense for construction companies to take action that will aid waste minimization.
The previousstudy on building procurement waste management in the construction industry is dated as far backed and not directly address to the aim of this study. However, the level of waste generated by the industry has continuously increased, other studies have also investigated the causes of waste in the construction industry in .This paper will contribute to studieson practices,understanding that will generate activities that are related to project design, materials procurement and actual construction activities (Tongo, et al, 2020).
Waste management significant in building construction Shen, Tam, Tam, & Drew (2004) cited in Mudashiru et al, (2016), reduce and repurpose the quantity of waste generated to achieve sustainable construction practices through social, environmental, and economic principles that contribute to sustainable development.The predominant stages in managing waste are generation, storage, collection, transfer, processing. Quite a lot of approaches may be adopted during each stage to ensure effective management of waste in all stages of construction (Tongo, et al, 2020; Adewuyi & Odesola, 2015; Rodgers, 2011). Because of foregoing, this paper aim to detailed the professional perspicacity on building procurement waste management of construction industry in southwestern, Nigeria. However, this study set to examines procurement waste management on building construction industry in southwestern, Nigeria, with a view of providing pertinent informationnecessary in lessen waste in building procurement industry.

Research Methods:-
This study adopts random research as its methodological framework. The first typesinvolveidentification of relevant built professionally in the six (6) southwestern State Namely Lagos, Ogun, Oyo, Ondo, Osun, and Ekiti State, Nigeria, while the second part involves the use of a questionnaire to randomly elicit information such as waste mitigation through materials procurement process from the experts within the industry. A total no of 264 questionnaires was administered. The information was descriptively analyzed through SPSS 26.0.

Results of Findings:
The presentation in this section depicts the result of professional on the perspicacity of building procurement waste management in the construction industry in southwestern, Nigeria. All table in the paper was derived from the fieldwork January 2020, except otherwise stated. Table 3.1 shows that 83.3% of the respondents' professional agreed that advocacy measure will reduce the Scourge construction waste,6.4% of the respondents' professional disagreed, while 10.2% of the respondents' professional were not sure whether advocacy will reduce the scourge of Building Waste. 1030 As presented on table 3.2, the study found that significant proportion 83.3% of professional agreed that adoption of waste management plan/policies will reduce the scourge of construction waste, 6.4% were disagreed, while only 3% of the respondents' were not sure either waste management plan/policies will reduce waste scourge in building industry. The result of the finding of whether enforcement of waste management plan/policies will reduce the scourge waste table 3.3, established that 86.4% of respondents' professionals taught in the direction that enforcement of waste management plan/policies reduces waste, 7.8% disagreed, while 5.3% of the professionals were not sure.  Table 3.4, shown that 79.9% of the professionals agreed that adoption of waste reduction strategies will reduce the scourge of waste in building construction, 15.9% disagreed while 4.2% of the professionals were not sure if the adoption of waste reduction strategies will reduce the scourge of construction waste. The study presented on table 3.5, depicts that 67.8% of the profession agreed that financial incentive will reduce waste scourge, 17.8% of the respondents; professionals' disagreed. However, only 14.4% were not sure if the financial incentives, waste will be reduced. Result of finding weather penalty to defaulter on table 3.6, shown that 84.8% of the respondents' professional agreed that penalty to waste defaulter will reduce waste, 8.7% disagreed, and 6.4% of the respondents' professional were not sure. The professionals' perspicacity of building procurementon waste management in the construction industry in southwestern Nigeria, was determining using Professionals Satisfaction Index. To measure this, seven variables relating to the level of satisfaction derivable from building procurement management were identified. It is believed that level of professional' satisfaction would indicate the satisfaction derived fromprocurement waste management.
To this end, a very satisfactory is an indication that those measures have a positive effect on vice versa. ∑PSI = 72.56, PSI = ∑ HSI = 20.32 = 2.90 (N = 7) 7 The professional' satisfaction index (PSI) on some of these variables fell between disagreeingand not sure (table 3.7). This implies that disagree. For instance, management support, staff knowledge, and financial/incentives/motivation of professionals' will not reduce the scourge of procurement waste in building construction.

Conclusion:-
Based on the findings of the analysis of this study the following were concludes: 1. improved and better storage and, handling of materials delivered to site, a sale back contract should be entered with suppliers of building materials, 2. The needs for proper site supervision, materials control and security on-site, 3. Site workers, technician and craft men should be aware of material waste generation, 4. All stakeholders' in building construction should be carried along withon management decision regarding waste management plan development as the commence of a project.