scholarly journals Preliminary Design Proposals for Dovetail Wood Board Elements in Multi-Story Building Construction

Architecture ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 56-68
Author(s):  
Hüseyin Emre Ilgın ◽  
Markku Karjalainen
Keyword(s):  
Construction Industry ◽  
Wood Products ◽  
Building Construction ◽  
Preliminary Design ◽  
Sustainable Material ◽  
Wood Board ◽  
Technical Performance ◽  
Structural Applications ◽  
Research Findings ◽  
Story Building

Adhesives and metal fasteners play important roles in the composition and connections of engineered wood products (EWPs) such as cross-laminated timber and glue-laminated timber in the building construction industry. However, due to their petroleum-based nature, adhesives can cause toxic gas emissions, while metal fasteners compromise the end-of-life disposal and reusability of EWPs. These issues adversely affect the sustainable material properties of EWPs. Numerous studies have been conducted in the literature on the technological, ecological, social, and economic aspects of EWPs in construction with different construction solutions, but no studies have been conducted to evaluate the technical performance of dovetail wood board elements (DWBE) in multi-story or tall building construction. This study focuses on adhesive- and metal fastener-free DWBE as sustainable material alternatives for ecologically sensitive engineering solutions. Various preliminary design proposals are presented for DWBE using architectural modeling programs as an environmentally friendly approach intended for use in the timber construction industry. The research findings are based on a theoretical approach that has not yet been practically tested but is proposed considering existing construction practices that need further investigation, including technical performance tests. It is believed that this paper will contribute to the promotion and diffusion of DWBE for more diverse and innovative architectural and structural applications, particularly in multi-story timber building construction, as one of the key tools in tackling climate change challenges.

scholarly journals Various Geometric Configuration Proposals for Dovetail Wooden Horizontal Structural Members in Multistory Building Construction

2022 ◽  
Author(s):  
Hüseyin Emre Ilgın ◽  
Markku Karjalainen ◽  
Olli-Paavo Koponen
Keyword(s):  
Architectural Design ◽  
Wood Adhesive ◽  
Wood Products ◽  
Building Construction ◽  
Structural Members ◽  
Environmental Friendliness ◽  
Important Place ◽  
Technical Performance ◽  
Geometric Configurations ◽  
Multistory Building

Adhesives and metal fasteners have an important place in the content of engineered wood products (EWPs). However, adhesives may cause toxic gas emissions due to their petroleum-based nature, while metal fasteners may adversely affect the reusability of these products. These issues also raise important questions about the sustainability and environmental friendliness of EWPs. Thus, there is still room for a solution that is solid and completely pure wood, adhesive- and metal-connectors-free dovetail wood board elements (DWBEs). There are many studies on the technological, ecological, and economic aspects of these products in the literature, but no studies have been conducted to assess the technical performance of DWBEs. This chapter focuses on DWBEs by proposing various geometric configurations for horizontal structural members in multistory building construction through architectural modeling programs. In this architectural design phase, which is one of the first but most important stages, the proposed configurations are based on a theoretical approach, considering contemporary construction practices rather than structural analysis or mechanical simulation. Further research, including technical performance tests, will be undertaken after this critical phase. It is believed that this chapter will contribute to the dissemination of DWBEs for innovative architectural and structural applications, especially in multistory wooden structures construction.

scholarly journals Does Audit Quality able to Reduce Cost Stickiness? Evidence from Property, Real Estate and Building Construction Industry

2019 ◽  
Author(s):  
Adrian Muluk ◽  
Eva Herianti ◽  
Suwanti .
Keyword(s):  
Real Estate ◽  
Construction Industry ◽  
Audit Quality ◽  
Stock Exchange ◽  
Sampling Technique ◽  
Building Construction ◽  
Analysis Tool ◽  
Policy Makers ◽  
Research Findings ◽  
Cost Stickiness

The purpose of this study is to determine the level of cost stickiness at SG&A cost (Sales, General, and Administrative) and test whether the level of stickiness costs can be reduced through audit quality. The study sample used property, real estate, and building construction industry listed on the Indonesia Stock Exchange (IDX) for the 2016-2018 period with a purposive sampling technique, so that the final number of samples obtained was 117 sample observations. This study uses eviews version 10 analysis tool. The results of the study show that every 1% increase in net sales will increaseSG&Aby0.610%.Meanwhile,every1%decreaseinnetsaleswillreduceSG&A by (0.610043-0.071380) 0.538%. Furthermore, the research findings show that audit quality can reduce stickiness costs. The implication of this study is that policy makers can use audit quality to reduce stickiness costs.

scholarly journals Causes of delays in the construction phase of Chinese building projects

2018 ◽  
Vol 25 (11) ◽  
pp. 1534-1551 ◽  
Author(s):  
Ting-Kwei Wang ◽  
David N. Ford ◽  
Heap-Yih Chong ◽  
Wei Zhang
Keyword(s):  
Construction Industry ◽  
Questionnaire Survey ◽  
Construction Projects ◽  
Poor Performance ◽  
Building Construction ◽  
Building Projects ◽  
Content Type ◽  
Research Findings ◽  
Causes Of Delays ◽  
Survey Approach

PurposeDelays during construction are one of the common scenarios in the construction industry. The purpose of this paper is to identify the primary causes of delays in the construction phase of building construction projects in China.Design/methodology/approachQuestionnaire survey approach was adopted across the four typical cities in China, namely, Beijing, Shanghai, Chongqing and Shenzhen. In total, 115 sets of valid responded questionnaires were collected and analyzed.FindingsThe results show that the causes of variations, delays in progress payments, exceptionally low bids and subcontractors’ poor performance and communication issues were the most important causes of delays in China.Originality/valueThis research is the first questionnaire survey on the causes of delays in the construction phase of building construction projects in China. The comparative analysis shows two unique causes of delays in the Chinese construction industry, such as “difficulty in claiming indemnity” and “unreasonable upfront capital demanded by client.” It also reveals different ranked causes of delays as per distinguished political and economic situations in China. The research findings can be referred by construction projects in other countries that are funded or partnered with China.

scholarly journals Barriers to the Effective Regulation of the Building Construction Industry: An Empirical Analysis

2019 ◽  
Vol 3 (2) ◽  
pp. 49-58
Author(s):  
W. O. Omollo
Keyword(s):  
Construction Industry ◽  
Simple Random Sampling ◽  
Target Population ◽  
Building Construction ◽  
The Public ◽  
Joint Activities ◽  
Key Stakeholders ◽  
Research Findings ◽  
Random Number Table ◽  
Public Interest Theory

This study investigates key barriers to the effective regulation of the building construction industry in Kenya, a case study of Kisii Town. It was guided by the Public Interest Theory of Regulation, which provided the underpinning elucidating why the building construction industry in Kenya needs regulation. The target population comprised 84 registered building contractors with a sample size of 66 selected using simple random sampling by application of random number table. As regards limitation, the study does not measure the extent of quality assurance within the construction industry, but rather delve on the key factors impeding its effective regulation. The research findings show that ineffective regulation of the construction industry in Kisii Town was prompted by the joint activities of building development contractors and limitations of the National Construction Authority (NCA) (the regulator). Regarding the activities of building contractors, identified barriers included failure to refer to key legislation that regulates the construction industry, failure to obtain statutory approvals of building development, and laxity to invite supervision of ongoing projects by planning authorities. Conversely, factors elucidating why NCA was not successfully regulating the construction industry included inadequate multi-sectoral coordination, inadequate surveillance, and limited sensitization of key stakeholders. Drawing from these findings, the study recommends regular monitoring and enhanced enforcement that would promote compliance and sensitization of contractors with applicable standards and regular inspections of ongoing projects. Also, establishing a coordinating committee to harmonize institutions that deal with development control. Keywords: Construction Industry, Kenya, Kisii Town, Regulation

scholarly journals Examining the implementation of ISO 9001 in Indonesian construction companies

2015 ◽  
Vol 27 (1) ◽  
pp. 94-107 ◽  
Author(s):  
Debby Willar ◽  
Vaughan Coffey ◽  
Bambang Trigunarsyah
Keyword(s):  
Quality Management ◽  
Construction Industry ◽  
Current Practice ◽  
Iso 9001 ◽  
Quality Management Systems ◽  
Content Type ◽  
Construction Companies ◽  
Main Motive ◽  
Research Findings ◽  
Management Attitude

Purpose – The purpose of this paper is to examine the implementation of quality management systems (QMSs) of Grade 7 (G-7) Indonesian construction companies. This includes the initial motives that have driven the development of QMSs, barriers to effective QMS implementation, the current practice and integration of QMS-ISO 9001 principles and elements, and the performance of contractors implementing such QMSs. Design/methodology/approach – A survey was conducted involving 403 respondents (Quality Management Representatives, Managers, and Project and Site Engineers) from 77 G-7 as well as ISO 9001 certified Indonesian construction companies. Findings – The main motive for G-7 contractors in establishing and implementing ISO 9001 based QMSs are identified as being to effectively and efficiently control project activities. Respondents apparently do not often experience problems related to QMS implementation. However, issues of management attitude and purpose are identified as barriers that may affect effective QMS implementation. The study highlights the ISO 9001 principles and elements that still require to be more critically applied by G-7 contractors in order to fully implement and improve their current QMS effectiveness. The findings also suggest that, although certified, many G-7 contractors have not yet achieved a satisfactory level of performance to be truly competitive in global markets outside Indonesia. Originality/value – To date, only limited research has been conducted into the application of ISO 9001 in the Indonesian construction industry. The research findings reinforced the value of pursuing more effective QMS implementation. They also support current attempts to introduce ISO 9001 QMSs to a much wider base of Indonesian construction companies, particularly small and medium sized contractors and builders.

Supply chain cost model for prefabricated building material based on time-driven activity-based costing

2016 ◽  
Vol 43 (4) ◽  
pp. 287-293 ◽  
Author(s):  
Yong-Woo Kim ◽  
Seung-Heon Han ◽  
June-Seong Yi ◽  
SooWon Chang
Keyword(s):  
Sensitivity Analysis ◽  
Supply Chain ◽  
Supply Chains ◽  
Construction Industry ◽  
Cost Model ◽  
Building Construction ◽  
Activity Based Costing ◽  
Chain Management ◽  
Material Supply ◽  
Supply Chain Costs

The effect of ‘supply chain management’ can be leveraged when benefits of collaboration within and beyond the capacities of individual organizations are witnessed. One of the primary tasks in reducing total supply chain costs is to understand where the costs occur in a supply chain and how each activity impacts the total supply chain costs. Most supply chains in construction usually involve multiple entities, each one in a different process. A rebar supply chain is one example where many entities are involved in different processes. The supply chain coordinator needs a supply chain cost model, which shows how each activity impacts all supply chain costs to reduce the total costs. The research suggests a supply chain cost model using time-driven activity-based costing. The proposed cost model was applied to a building construction project, followed by sensitivity analysis identifying critical activities. This method can be adapted to analyze other fragmented material supply chains in the construction industry.

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