scholarly journals Material waste minimization techniques in building construction projects

2021 ◽  
Vol 14 (1) ◽  
pp. 1-19
Author(s):  
Shitaw Tafesse
Keyword(s):  
Waste Management ◽  
Construction Projects ◽  
Construction Material ◽  
Management Strategies ◽  
Construction Materials ◽  
Building Construction ◽  
Rapid Expansion ◽  
Waste Minimization ◽  
Index Method ◽  
Importance Index

In Ethiopia, the rapid expansion of the construction sector has resulted in the wastage of construction materials that negatively affect the environment, society, and the economy. The reason is inefficient waste management strategies practiced in construction projects. Hence, an adequate material waste management strategy is required. This study was an attempt to identify the key techniques that can help to minimize material wastage in building construction projects. Questionnaire surveys, interviews, and reviews of previous studies and related literature were employed in gathering the relevant data. Seventy of 85 questionnaires administered and distributed to contractors, consultants, and clients were returned. These data were analyzed using the relative importance index method. The results indicated that employing waste management officers for this purpose, using prefabricated or off-site production of components, appropriate on-site waste management, and incorporating a policy of material waste minimization plan were identified as key measures to minimize construction material wastes.

scholarly journals Impacts Of Environment On Building Construction Projects On Woliata Sodo Town

2022 ◽  
Vol 24 (1) ◽  
pp. 93-104
Author(s):  
Wudnesh Honja Angeloa ◽  
Keyword(s):  
Environmental Impacts ◽  
Environmental Conditions ◽  
Construction Projects ◽  
Construction Material ◽  
Research Result ◽  
Productivity Loss ◽  
Construction Materials ◽  
Building Construction ◽  
Development Economic ◽  
The Impact

The environmental impacts have become a series of problems in today’s construction environments. Environmental conditions can have an adverse impact on the duration, cost, and quality of construction activities. This study is conducted to describe and point out the impact of the environment on building construction projects in sodo town. The contractor can estimate the Productivity loss due to the impact of environment on construction activity can be either partial or complete: partial loss is generally attributed to reduced labor productivity and work stoppage which interrupt those activities. This study organized by using questioners. The research basically focused on identifying and quantifying different environmental impacts that can affect the construction progresses. As the research result the escalation of construction material price, the availability of construction materials around the area and the involvement of different construction parties and the climatic condition of the environments are the main findings that we have got from our analysis. Generally, this research guides to meet future demands for sustainable environmental development, economic development, expansion of different construction infrastructure for sodo town. Many contractors found in this area fall over different environmental challenges. So to overcome these problems, are some requirements expected from different parties. To minimize those environmental impacts the construction parties should make a detail feasible study about the overall environmental conditions of sodo town before they decided to start up any construction works.

scholarly journals Assessment of Lean Construction Practice at Selected Construction Sites in Klang Valley

2018 ◽  
Vol 7 (4.35) ◽  
pp. 125
Author(s):  
Mohammed Elhaj Alsoufi Mohammed Ahmed ◽  
Leong Sing Wong
Keyword(s):  
Construction Projects ◽  
Management Strategies ◽  
Health And Safety ◽  
Lean Construction ◽  
Building Construction ◽  
Total Quality ◽  
Construction Sites ◽  
Construction Techniques ◽  
Comprehensive Survey ◽  
Klang Valley

Lean construction is known to reduce costs, improve profit or increase competitiveness, increase business opportunity and customer base, improve health and safety, improve quality, yield higher employee salaries, shorten production timescales and increase customer satisfaction. With little attention on research of lean construction in Malaysia, it remains a problem of non-standardization in waste elimination strategies thereby sub optimizing waste management in Malaysian construction projects. The objective of this paper is to evaluate lean construction techniques and measure the feasibility in term of their applicability for construction at selected sites in Klang Valley, Malaysia. The study is novel and significant in a sense that it can help to develop reliable management strategies for implementing lean construction technologies at the construction sites. Case studies were carried out as a strategic method and comprehensive survey that covers both questionnaire and interview were adopted as a method of data collection. Likert scale 1 to 5 was used in the written questionnaire with workers in order to assess the level of awareness and acceptance on the need of lean construction techniques for eight construction sites in various places and with various categories (infrastructure and building construction projects) in Klang Valley, Malaysia. Later, semi structural interview was conducted with expert judgment to justify the factors which affect the implementation of lean construction at the construction sites. From the study outcome, it was discovered that both Total Quality Management (TQM) and Industrialized Building System (IBS) were rated by the respondents to be highly effective in both infrastructure and building construction projects.

Causes of Delay in Indian Construction Industry

2012 ◽  
Vol 174-177 ◽  
pp. 2768-2773 ◽  
Author(s):  
M. Paranthaman Venkatesh ◽  
S. Muthalvan Renuka ◽  
C. Umarani
Keyword(s):  
Project Management ◽  
Nongovernmental Organizations ◽  
Construction Industry ◽  
Construction Projects ◽  
Construction Materials ◽  
Statistical Tool ◽  
Change Orders ◽  
Importance Index ◽  
Management Techniques ◽  
Private Government

Delays in a construction project can be regarded as a failure. This paper aims to investigate the causes of delay in Indian construction projects undertaken by private, government and nongovernmental organizations. In view of this 45 causes of delay were identified and developed the questionnaire for the quantitative confirmation of the most causes of delay. Consequently the questionnaire was distributed to construction professionals like Managers, Engineers and others. Subsequently the collected data was analyzed using statistical tool and the factors were measured and ranked under each group by importance index for various construction professionals. The results suggest that delays are mainly due to shortage of labours, shortage of construction materials and extra works (rework and change orders). The resources like manpower and materials are having highest contribution of about 24% compared to other sources. However this paper presents recommendations for a better project management techniques & procedures which can be adopted during conceptual & detailed planning phases of the project in order to minimize the construction delay.

Relative Importance of Factors Affecting Construction Hazards in the Design Phase

2013 ◽  
Vol 330 ◽  
pp. 862-866
Author(s):  
Seyyed Shahab Hosseinian ◽  
Zahra Jabbarani Torghabeh ◽  
Aziruddin Ressang
Keyword(s):  
Construction Projects ◽  
Relative Importance ◽  
Design Phase ◽  
Construction Sites ◽  
Index Method ◽  
Safety Level ◽  
Factors Affecting ◽  
Importance Index ◽  
Construction Accidents ◽  
Construction Hazards

dentifying the root causes of construction accidents has indicated that not only contractors but designers and architectures are capable of influencing construction workers safety. The aim of this study is to investigate and prioritize factors affecting construction hazards in the design phase. To achieve the aim of this study, a questionnaire survey was distributed among respondents randomly selected from construction sites within Malaysia. Relative Importance Index method was used to prioritize factors in order of level of effect on construction hazards. The results indicated that Lack of designers safety knowledge, Lack of designers knowledge about construction processes and Late involvement of constructors in the design process have the highest level of effect while Lack of safety organizations which evaluates the safety level of design and Few application of components' prefabrication have the lowest level of effect on hazards in the design phase of construction projects.

scholarly journals Causes of Delay in Public Building Construction Projects: A Case of Addis Abeba Administration, Ethiopia

2019 ◽  
Vol 8 (2) ◽  
pp. 4-9
Author(s):  
Abdurezak Mohammed Kuhil ◽  
Neway Seifu
Keyword(s):  
Construction Projects ◽  
Addis Ababa ◽  
Construction Materials ◽  
Site Investigation ◽  
Building Construction ◽  
Negative Effects ◽  
Price Inflation ◽  
Main Category ◽  
Public Building ◽  
Grade One

The time overrun in construction projects has become one of the most common problems in the industry that cause multitude of negative effects on the projects and its stakeholders. This study focused on assessing the main causes of delay in public building construction projects in Addis Ababa Administration mainly undertaken by grade one contractors. In these projects, 42 delay causing events in the Addis Ababa public building construction projects were identified and categorized in to five main category groups, and the most important and critical causes of public building construction delay causing factors were evaluated and ranked based on the RRI(Ranking and computation of relative importance index)values from the data collected in a questionnaire survey of three groups of respondents- clients, consultant and contractors in the construction industry. The survey findings revealed the top ten factors that cause construction delays in the public building construction projects in Addis Ababa are: (1) Difficulty in project financing (poor financial system); (2) Poor Project management system;(3) Delay in issuance of designs and working drawings; (4) Shortage of availability of imported construction materials and goods on market; (5) Design errors and complexity of designs;(6)Delay in progress payments for completed works; (7) Late start & resource mobilization to site; (8) Financing problems; (9) Inaccurate Site investigation Report;(10) Price Inflation. Furthermore, the ranking of the factors tested the agreement among the respondents and finally agreement test reveal that there appears a positivecorrelation between the groups in noticing and ranking the set of delay causes. The study recommended in general and particularly to all the parties for mitigating factors causing time overrun.

scholarly journals Material Cost Optimization and Quality Control Improvement of Building Construction

2021 ◽  
Author(s):  
Sori Tesema ◽  
Woyesa Ararsa ◽  
Jifara Chimdi ◽  
Emer Tucay Quezon
Keyword(s):  
Quality Control ◽  
Construction Material ◽  
Cost Optimization ◽  
Construction Materials ◽  
Building Construction ◽  
Multilinear Regression ◽  
Factors Affecting ◽  
Independent Variables ◽  
Material Cost ◽  
Dependent Variables

A building construction project cannot be completed successfully by only planning and scheduling. Project controlling that consists of project monitoring and updating, is the other critical stage. Construction materials cost and quality are becoming a severe problem in Ethiopia, especially in Ambo Town, where little consideration is given. The study tried to evaluate different factors affecting the materials cost and quality on building construction site, rank significant factors that are prevalently affecting the cost and quality of materials used for building projects from the point of view of the respondents, and established a model to optimize materials cost and materials quality using multilinear regression method to come up with the model best fit. Purposive sampling was used, and 180 questionnaires were administered on building construction firms to analyze Material cost Optimization and quality control Improvement- Case Study of Ambo Town. To achieve this, a questionnaire survey containing factors affecting Building construction material cost and quality, which were identified by literature and Interview, was analyzed by using the Relative Importance Index, Pearson's correlation, and Multilinear regression model. Variables are statistically significant at 95% confidence level is assessed that all of the independent variables are positively related to Building Construction material cost and quality. The RII results showed that Material Wastage minimization (RII = 0.908), Proper workmanship (RII= 0.859), Sufficient Training of workers/staff (RII = 0.876), Proper forecasting of materials price in the market (RII = 0.850), Using suitable, safe and secure storage (RII = 0.886), Quality checking for each delivery of the aggregates to the site (RII = 0.889), Cutting of materials ( glass, tiles, plywood) (RII = 0.870) and Design changes (RII = 0.770) were ranked as the most significant among factors affecting building construction materials. Also, Two Multiple linear regression models were established for both dependent variables (material cost and material quality). The analysis results showed all independent variables were significant and had a strong positive relationship with dependent variables. The values of R2 for the developed equations indicated 0.771 for material cost and 0.777 for material quality. Hence, the basic recommendations such as planning and monitoring construction activities and inspection and verification of materials were anticipated to be exercised by key role players of the construction industry.

Resource Management in Construction Project

2014 ◽  
Vol 567 ◽  
pp. 607-612
Author(s):  
Idris Othman ◽  
Madzlan Napiah ◽  
Narayanan Sambu Potty
Keyword(s):  
Resource Management ◽  
Construction Projects ◽  
Low Cost ◽  
Construction Project ◽  
Construction Materials ◽  
Weather Condition ◽  
Skilled Workers ◽  
Team Members ◽  
Work Related ◽  
Importance Index

Construction projects experience various problems and complex factors such as cost, duration, quality and safety. Construction sector is diverse as it contains sub-contractors, contractors, consultants, architects, owners, and others. The aim of this paper is to identify and analyze resource management issues in construction project. Other than that is to ascertain the significance of the resource management as one of the key element in construction project success. A literature review and a questionnaire survey were done for data collection and analyzed using Relative Importance Index and Cronbach’s alpha. The questionnaires were distributed to the team members of KLIA 2 – New Low Cost Terminal Project: Client, Architects, Main Contractor, and Sub-Contractor. The findings revealed that dependent on foreign workers to respond to the high demand of skilled workers, weather condition affecting machineries/equipment-work-related performance and weaknesses in quality assurance for the supply of construction materials should be given serious attention in order to ensure the productivity and financial performance of the projects. Keywords: Construction Project Management, Resource Management, Manpower, Machineries, Materials

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