scholarly journals Construction machines requirement for the building site

2019 ◽  
Vol 110 ◽  
pp. 01036 ◽  
Author(s):  
Sergei Sinenko ◽  
Boris Zhadanovsky ◽  
Vyacheslav Obodnikov
Keyword(s):  
Labor Productivity ◽  
Optimal Number ◽  
Economic Indicators ◽  
Construction Sites ◽  
Building Site ◽  
Manual Work ◽  
Complex Mechanization

Economic indicators of construction production are directly related to the choice of the optimal number of machines. The lack of machines for the production of construction and installation works leads to the impossibility of their implementation in the directive period. The pace of construction and installation work and labor productivity depend, to a large extent, on the degree of provision of construction facilities with machines (level of labor mechanization). The article considers the calculations of the need for construction machines for the building site, trust and the ministry. When determining the need for machines for construction sites, it is necessary to take into account ensuring the execution of works in the planned timeframe, increasing the level of complex mechanization, increasing labor productivity and reducing manual work, improving the use of the machine park and their operation. The article presents a consistent set of formulas that must be used when choosing construction machines and determining their number.

scholarly journals Initial Analysis, Planning and Calculation of Vertical Delivery in High-rise Building Construction

2017 ◽  
Vol 48 (2) ◽  
pp. 87-92 ◽  
Author(s):  
Simo Suđić
Keyword(s):  
Construction Projects ◽  
Critical Path ◽  
Vital Role ◽  
Optimal Number ◽  
Building Site ◽  
Tower Crane ◽  
Concrete Production ◽  
General Contractors ◽  
Time Calculation ◽  
Major Factors

Tower crane plays a vital role in materials delivery in construction projects. General contractors often use technical and commercial quotes to calculate number of cranes and their engagement duration in project, and they often have to deal with commercial and time risks. The main reason for this approach is the lack of standardised methodologies for calculating tower cranes engagement. Identifying the optimal number of cranes, their location and duration of engagement at the building site are the major factors that can reduce the risks considering the time and cost by increasing productivity and thus decreasing the required time. Calculation will be based on different production parameters -space per worker, concrete production per crane or worker, lifting time. This paper presents a methodology for calculating the required number of cranes and their optimal positioning. Proposed model for crane engagement optimisation is developed using the Critical Path Method in Primavera P6 software.

Development of Automatic Corner Stone Trimming Working Machine for Boundary Stones

2014 ◽  
Vol 1025-1026 ◽  
pp. 1062-1065
Author(s):  
Sung Hoon Oh
Keyword(s):  
Risk Factors ◽  
Production Method ◽  
Production Volume ◽  
Production Environment ◽  
Labor Costs ◽  
Construction Sites ◽  
Manual Work ◽  
Price Competitiveness ◽  
Strength Based

Stones are major materials for various civil engineering works and architectural construction areas and various kinds of stones are being used in construction sites and those areas are also very diverse. Even though the size of domestic stone market size is currently increasing, production volume cannot meet the demand because the production method is still highly dependent on manual work. In addition, as China is rising as the center of world stone market which emphasized the strong price competitiveness, imports from China are currently increasing because China is gradually securing the quality competitiveness as well. This seems because the quality of Chinese stones does not fall behind than the quality of domestic stones and in order to recover this situation, it is considered important to maximize the productivity of domestic stone working companies through the automation of production environment and to secure the price competitiveness through quality equalization to deal with low labor costs which China is emphasizing as their strength. Based on these reasons, this development was conducted and tried to secure the competitiveness of stone working by developing automatic control technology and stone working technology using air pressure and PLC, preventing risk factors and environmental problems caused by manual work in stone working site, removing working risk factors through automation and reducing dust and noise. And accordingly, automatic corner stone trimming working machine for boundary stones was developed, and production environments were improved and productivity could be maximized through the automation of manpower dependent works.

scholarly journals Identification and analysis of factors affecting labour productivity in Iraq

2018 ◽  
Vol 162 ◽  
pp. 02032 ◽  
Author(s):  
Tareq Khaleel ◽  
Yasser Nassar
Keyword(s):  
Labor Productivity ◽  
Construction Projects ◽  
Arab World ◽  
Labour Productivity ◽  
Relative Importance ◽  
Construction Sites ◽  
Factors Affecting ◽  
Importance Index ◽  
Leadership Motivation ◽  
Major Factors

Productivity is a very important element in the estimation process in construction management. The objective of this research is to identify and analyze the factors which affect labor productivity in construction projects. In this research, 42 effective factors were collected from site survey, interview with engineers and experts, and previous research in the Arab world. These factors are grouped into Nine categories “Workforce, Leadership, Motivation, Supervisors, Safety, Project, Time, Material, and External”. A survey questionnaire of 70 respondents was distributed among different experts. A statistical analysis was done using SPSS and EXCEL packages. The Relative Importance Index was used to find out the most significant factors affecting the labor productivity in construction sites. The results accomplished from the survey revealed that the major factors negatively affect the labor productivity (ranked from the worst factor with Relative Importance Index values, respectively) namely, Availability Material (88.571%), Climate status “Weather” (88%), Religious occasions (86.29%), Number of working groups (86%), Ganger experience (85.714%), Workforce surveillance (84.857%), Ganger Age (84%), working at height (82%), Drawings and specifications alteration during execution (81.69%), and Sequence of floor (80.571%). Based upon these findings, this can help the construction professionals to improve the productivity and project performance in Iraq.

scholarly journals Application of the Regression Model for Evaluating Factors Affecting Construction Workers’ Labor Productivity in Vietnam

2019 ◽  
Vol 13 (1) ◽  
pp. 353-362 ◽  
Author(s):  
Dinh Tuan Hai ◽  
Nguyen Van Tam
Keyword(s):  
Regression Model ◽  
Labor Productivity ◽  
Time Factors ◽  
Construction Workers ◽  
Construction Sites ◽  
Factors Affecting ◽  
Construction Firms ◽  
Motivation Factors ◽  
Impacting Factors ◽  
To Come

Background: In the rapidly-developed construction industry, labor productivity has improved to a great extent, still, it is low compared with many other industries. The enhancement of labor productivity has become important that attracts much attention and focus from researchers in Vietnam and around the world. Aim: This paper focuses on key factors affecting labor productivity of construction sites in Vietnam by introducing a regression model to evaluate the extent of each factor’s impact on the labor productivity of construction workers. Methods: Ten groups of impacting factors were identified as factors relevant to construction worker, factors relevant to site operation and management, factors relevant to motivation, factors relevant to working time, factors relevant to labor working tools, factors relevant to labor working conditions, factors relevant to working safety, factors relevant to project informations, factors relevant to natural environment, and factors relevant to socio-economic conditions. Results: By referring to research results, Vietnamese construction contractors will be able to come up with workable solutions towards a better performance of construction workers. Conclusion: On that basis, the productivity of construction firms and the workers will be improved correspondingly.

scholarly journals Management of health and safety on building site using smart technologies

2021 ◽  
Vol 1209 (1) ◽  
pp. 012013
Author(s):  
A Husovská ◽  
Z Struková
Keyword(s):  
Information And Communication Technologies ◽  
Occupational Safety ◽  
Safety Management ◽  
Manufacturing Sector ◽  
Health And Safety ◽  
Construction Sites ◽  
Building Site ◽  
Information And Communication ◽  
Smart Technologies ◽  
Improve Health

Abstract The construction industry is a dynamic manufacturing sector whose major problem is occupational safety and its management. There are various information and communication technologies or applications that can improve health and safety status. Their use gives every company management a great advantage to become more competitive in the construction trade. The presented article deals with smart phones and related applications as a type of technologies that can be easily used to improve health and safety performance in our conditions. The aim of the article is to present the advantages and benefits of this technology for increasing safety on construction sites. The presented results confirm the trend of efficient processing of the obtained information using ICT technologies. They intensify the safety management process and help staff to handle unpredictable dangerous incidents and contribute to the successful management of the whole construction site.

scholarly journals The methodic of calculation for the need of basic construction machines on construction site when developing organizational and technological documentation

2018 ◽  
Vol 33 ◽  
pp. 03077 ◽  
Author(s):  
Boris Zhadanovsky ◽  
Sergey Sinenko
Keyword(s):  
Construction Projects ◽  
Optimal Number ◽  
Construction Site ◽  
Construction Work ◽  
High Rise ◽  
Complex Mechanization ◽  
Technological Documentation ◽  
Scheduled Time ◽  
Selection Of

Economic indicators of construction work, particularly in high-rise construction, are directly related to the choice of optimal number of machines. The shortage of machinery makes it impossible to complete the construction & installation work on scheduled time. Rates of performance of construction & installation works and labor productivity during high-rise construction largely depend on the degree of provision of construction project with machines (level of work mechanization). During calculation of the need for machines in construction projects, it is necessary to ensure that work is completed on scheduled time, increased level of complex mechanization, increased productivity and reduction of manual work, and improved usage and maintenance of machine fleet. The selection of machines and determination of their numbers should be carried out by using formulas presented in this work.

scholarly journals USE OF PROPOSALITY MEASURES IN THE PROBLEM OF DISTRIBUTING THE PRODUCTION PROGRAM BY THE SCHEDULED PERIOD ON THE BASIS OF THE SIMILARITY OF THE SIMILARITY OF DAKE, JACKARD, MAXFEDOR, OTIA, RAO, TANIMOTO

2021 ◽  
pp. 32-35
Author(s):  
Андрій Федоров ◽  
Павло Нотовський ◽  
Андреа Елізабет Передрій
Keyword(s):  
Individual Differences ◽  
Labor Productivity ◽  
Economic Indicators ◽  
Production Cycle ◽  
Similarity Coefficients ◽  
Production Time ◽  
Production Program ◽  
Distribution Process ◽  
Proximity Measures ◽  
Accounting Units

The distribution of the production program of many production options for planned periods of various durations is relevant for modern production. The specificity of this production is that from the same parts, assemblies (assembly units), many modifications and sizes of products can be assembled to satisfy more consumers. The complexes of work on individual products is neither a repetition of each other, nor completely different, but have some similarities and individual differences, and the production time is less than the planned period. In the work, the authors expressed the opinion that if the duration of the production cycle is less than the planned period, then the structural and technological features of individual products cannot be ignored in the tasks of distributing the production program (volume-calendar planning tasks). This statement is erroneous. Using such specifics, it is possible to improve the economic indicators of such production, and we have shown in this paper. The combination of similar structural and technological products in separate planning periods increases the specialization of production in separate periods, reduces losses from equipment downtime, increases labor productivity and reduces the load on the operating manager by reducing the number of planning and accounting units in each period. In the work, proximity measures are proposed based on the known similarity coefficients, since it is more convenient to algorithmize the distribution process of the production program. The authors proved that the proposed measures correspond to the Frechet axiomatics.

scholarly journals Stories of Learning: A Case Study of Norwegian Plumbers and Apprentices in TVET at the Construction Site and in a Training Agency

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Marit Lensjø
Keyword(s):  
Cost Effective ◽  
Vocational Education And Training ◽  
Dual Model ◽  
Building Structures ◽  
Construction Site ◽  
Construction Sites ◽  
Building Site ◽  
Vocational Teacher ◽  
One Year ◽  
And Training

Context: Through a dual model, based on 2 years of education in upper secondary school followed by two and a half year of apprenticeship training, Norwegian plumbing education has become an integrated part of the Technical Vocational Education and Training (TVET). Competence and skills are described in national plumbing curriculum. However, there is little information on how learning and training, interaction and relations between craftsmen and apprentices take place and develops at the workplace. The objective of this article is to identify significant learning processes by studying apprentices in a training agency and in communities of plumbers at the building site. Approach: The study has an ethnographic approach, based on a combination of fieldwork and interviews with apprentices, plumbers and a vocational teacher. During one year of fieldwork I followed a group of plumbing apprentices in a training agency, and in their plumbing companies at different construction sites. As a former plumber and vocational teacher, I was able to participate as a plumber and researcher and thus I had a unique position to work along with the apprentices and plumbers. This enabled me to observe interaction, learning and training in their communities of practices as an insider.Findings: The study showed that the process of learning practical skills, a professional language and a technical rationale was time consuming, challenging and sometimes tiering. In return the apprentices discovered proficiency, gained confidence and were considered as participants in the community of plumbers. A central finding is the great value of working in a community of plumbers at the building site, combined by studying sanitary and heating technology at the training agency. Among peers at the training agency, the apprentices were challenged to build and explore complex pipe laying, and to discuss technical regulations and rationale with each other and the vocational teacher. Conclusion: Craftsmen, like plumbers, consecutively handle a variety of technical work tasks and situations. Inside practice, the plumbers are close to materials and systems on construction site, where pipes, cableways and building structures looks different from the plan and the progress on paper. As experts, the plumbers often solve problems more functional and cost effective than suggested in the blueprint. The study shows how apprentices and plumbers develop skills, tacit knowledge and professionality through involvement with relevant things and situations, and by sharing experiences and technical expertise in communities of peers and plumbers. 

scholarly journals Labor Productivity on Construction Sites: A Case Study of Biological Wastewater Treatment Plant Construction

2021 ◽  
Author(s):  
Burcu Balaban Ökten ◽  
◽  
Yaprak Arıcı Üstüner ◽  
Anıl Aksoy
Keyword(s):  
Labor Productivity ◽  
Production Efficiency ◽  
Treatment Plant ◽  
Time Estimation ◽  
Construction Sites ◽  
Construction Time ◽  
Construction Technique ◽  
Cost Overruns ◽  
Factors Affecting

The production efficiency of labor on construction sites is an important factor for the success of projects. Skills, experience, and training are among the critical factors affecting labor productivity on construction sites. Especially in construction sites where a new construction technique is used, the teams' efficiency is affected by the learning processes. Laborers' unfamiliarity with the new technique can cause time delays and, accordingly, cost overruns. This research examines laborers' challenges in building an unfamiliar structure at construction sites through a case study. With a comprehensive literature review, interactions between laborers' learning process for new structures and construction time estimation were examined, and the case has been evaluated accordingly. It was observed that the time estimation could not be predicted during an unfamiliar construction form such as examined in the field study. This study is aimed to set an example for the construction sites where new productions take place.

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