scholarly journals A Comparative Study of Construction Waste Generation Rate Based on Different Construction Methods on Construction Project in Malaysia

2018 ◽  
Vol 8 (5) ◽  
pp. 3488-3491 ◽  
Author(s):  
H. Maniam ◽  
S. Nagapan ◽  
A. H. Abdullah ◽  
S. Subramaniam ◽  
S. Sohu
Keyword(s):  
Construction Projects ◽  
Indirect Measurement ◽  
Construction Method ◽  
Control Measures ◽  
Generation Rate ◽  
Waste Generation ◽  
Construction Waste ◽  
Construction Methods ◽  
A Value ◽  
Waste Generation Rate

High construction waste (CW) generation in Malaysia has serious impacts although there are very little available data regarding the relevant issue in Malaysia. This lack of data results in improper CW management and CW disposal without proper control measures. To control the implications of CW, it is very important to understand their quantity which is currently unknown. Past researches in Malaysia, found that CW generation was affected by construction methods (CMs) practiced on site. The aim of this study is to compare the CW generation rate between different CMs for on-going construction projects in Malaysia. Common CMs practiced in Malaysia are conventional construction method (CCM), mixed construction method (MCM) and industrialized building system (IBS). To obtain CW generation data, site visit (SV) method, which consists of direct measurement (DM) and indirect measurement (IM) is applied to this study. CCM was recorded to have the highest amount of waste (197.657 tons). IBS method records 77.188 tons and MCM 53.191 tons. Regarding the average waste generation rate (AWGR), IBS recorded a value of 0.018 tons per square meter, while MCM recorded 0.030 tons per square meter and CCM recorded the highest amount of 0.046 tons per square meter.

An empirical study on waste generation rates at different stages of construction projects in China

2019 ◽  
Vol 38 (4) ◽  
pp. 433-443
Author(s):  
Qiankun Wang ◽  
Lei Chen ◽  
Ruibo Hu ◽  
Zhigang Ren ◽  
Yanting He ◽  
...  
Keyword(s):  
Empirical Study ◽  
Construction Projects ◽  
Waste Reduction ◽  
Generation Rate ◽  
Estimation Methods ◽  
Small Samples ◽  
Waste Generation ◽  
Construction Sites ◽  
Construction Waste ◽  
Waste Generation Rate

Estimation of construction waste generation is critical to construction waste management decisions. However, current construction waste estimation methods have various limitations (e.g. small samples). To address those limitations, this research conducts an empirical study to evaluate the waste generation rate of different types of waste at different construction stages. In this study, construction waste from 148 new-built residential construction sites in China were sorted and weighted on site and their waste generation rates were estimated separately. The results indicated that the amount of inorganic nonmetallic waste with a generation rate of 16.59 kg m−2 was the highest among the five types of waste (i.e. inorganic nonmetallic waste, organic waste, metallic waste, composite waste, hazardous waste), while the waste generation rate for the underground construction stage, which was 27.57 kg m−2, was the highest among the three stages (i.e. underground stage, superstructure stage, finishing stage). Compared with previous data, the new waste generation rate proposed in this research can better estimate the actual waste generation situation in construction sites, which provides reliable information for proper decision-making. Furthermore, based on the result of the empirical study, some recommendations for construction waste reduction are proposed.

Investigate How Construction Waste Generation Rate is Different for Every Types of Project in Peninsular Malaysia Using Site Visit Method

2018 ◽  
Vol 10 (1) ◽  
Author(s):  
Shivaraj Subramaniam Shivaraj Subramaniam ◽  
◽  
Abd Halid Bin Abdullah Abd Halid Bin Abdullah ◽  
Sasitharan Nagapan Sasitharan Nagapan ◽  
Kumanan Kupusamy Kumanan Kupusamy ◽  
...  
Keyword(s):  
Peninsular Malaysia ◽  
Generation Rate ◽  
Site Visit ◽  
Waste Generation ◽  
Construction Waste ◽  
Waste Generation Rate

Quantification Methods for Construction Waste Generation at Construction Sites: A Review

2010 ◽  
Vol 163-167 ◽  
pp. 4564-4569 ◽  
Author(s):  
Ahmad Firman Masudi ◽  
Che Rosmani Che Hassan ◽  
Noor Zalina Mahmood ◽  
Siti Nazziera Mokhtar ◽  
Nik Meriam Sulaiman
Keyword(s):  
Construction Projects ◽  
Software Tool ◽  
Waste Reduction ◽  
Building Construction ◽  
Civil Infrastructure ◽  
Waste Generation ◽  
Construction Sites ◽  
Construction Waste ◽  
Future Direction ◽  
User Friendly

Estimation of construction and demolition (C&D) waste amount is crucial for implementing waste minimization program. Estimation of C&D waste amount generated is a mean in assessing the potential for waste reduction. Thus, a better understanding of C&D waste generation in terms of causes and sources can be achieved. The aim of this paper is to conduct a review on available construction waste quantification methods from previous studies, which have been utilized in certain countries, while attempting to choose the most suitable and applicable method, and to direct future studies for better quantification methods. This review is applicable only for building construction projects and did not include civil/infrastructure, demolition, renovation, and excavation projects. Six quantification methods and/or waste audit tool available from literatures are discussed, which include their limitation and future direction for this study. It is believed that some combination of these quantification methods could make a good impact in accurate numerical estimation of construction waste amount generated in building construction projects. A strong and accurate database as presented by Soliz-Guzman, combined with effective, vital, and resourceful estimation suggested by Jalali’s Global Index (GI), also with the aid of user-friendly software tool like the SMARTAudit could provide an effective and reliable waste quantification.

scholarly journals Investigation of Biogas Energy Yield from Local Food Waste and Integration of Biogas Digester and Baking Stove for Injera Preparation: A Case Study in the University of Gondar Student Cafeteria

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Ashenafi Tesfaye Bicks
Keyword(s):  
Food Waste ◽  
Food Processing ◽  
Generation Rate ◽  
Energy Yield ◽  
Waste Generation ◽  
Biogas Energy ◽  
Waste Generation Rate ◽  
The University ◽  
Processing Mechanism

Energy shortage is the main problem while preparing food at the university in Ethiopia. Baking of injera consumes a lot of firewood due to the nature of baking mitad and layout of the system. The daily average firewood consumption is 8600 kg which is equivalent to 790.3 m3 of gas. In this study, an investigation of energy yield from food waste is examined by assessing the daily waste generation rate from the university student cafeteria and configuring the baking stove (mitad) that utilizes biogas energy. CFD is used to investigate the performance and heat distribution of baking mitad. In the study, the measured average daily biodegradable food waste and kitchen waste generation rate in the campus is around 863 kg/day. The conversion of this food waste using the anaerobic digestion system yields 43.2 m3 biogas per day. Utilizing the daily biogas generated for baking injera improves the overall food making process and reduces firewood consumption by 5.4%. This biogas energy yield is considered to be utilized for baking injera in the kitchen. The designed biogas mitad (stove) does not generate smoke due to the type of fuel used and configuration of baking mitad. Furthermore, the stove has an insulation mechanism considered to conserve the heat loss to the surrounding. Generally, the utilization of the biogas system and integration of the biogas injera baking stove will improve the overall food processing mechanism in the university.

Developing models for the prediction of hospital healthcare waste generation rate

2015 ◽  
Vol 34 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Esubalew Tesfahun ◽  
Abera Kumie ◽  
Abebe Beyene
Keyword(s):  
Generation Rate ◽  
Waste Generation ◽  
Healthcare Waste ◽  
Waste Generation Rate
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