A review of techniques and errors involved in sound isolation testing

2021 ◽  
Vol 263 (3) ◽  
pp. 3176-3186
Author(s):  
Jameson Dickman
Keyword(s):  
Best Practices ◽  
Construction Industry ◽  
Background Noise ◽  
Green Building ◽  
Design Standards ◽  
Field Verification ◽  
The Us ◽  
New Construction ◽  
Standards And Guidelines ◽  
Review Current

Construction industry design standards are increasingly calling for new construction to be inspected and tested for compliance with design specifications after the project is built; otherwise known as the commissioning process. As part of this trend, owners, sensitive to the acoustics of their facilities, are seeking confirmation via measurements that their buildings meet sound isolation and background noise requirements, particularly when pursuing certifications under the US Green Building Council LEED standard, the WELL Building Standard, or other green building or wellness standards. In general, the error of sound isolation measurements is not officially established. This poses challenges to designers tasked with specifying assemblies and components to meet field verification requirements. This paper will briefly review current research and standards on the error of measurements such as Noise Isolation Class (NIC) and the Weighted Level Difference (D) and discuss example design standards and guidelines which do or do not account for this error. It will also propose further research topics to better define the error in sound isolation measurements and best practices when establishing or designing to sound isolation criteria in new or renovated buildings.

EVALUATION OF LEED CERTIFIED GREEN BUILDINGS

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Hasan Gokberk Bayhan ◽  
Asli Pelin Gurgun
Keyword(s):  
Construction Industry ◽  
Indoor Air ◽  
Green Building ◽  
Green Buildings ◽  
Indoor Environmental Quality ◽  
Construction Process ◽  
Water Efficiency ◽  
Local Conditions ◽  
The Usa ◽  
New Construction

Leadership in Environmental and Energy Design, LEED, is one of the most recognized green building certification systems in the world. Turkey is also one of the countries, where it is widely used. It offers different rating groups to address varying requirements of building and project types. LEED-v3 NC, the rating group for new construction, includes seven categories of credits: sustainable sites, water efficiency, energy and atmosphere, materials and resources, indoor air quality, innovation, and regional priority. The maximum achievable point is 110. Local conditions significantly affect the achievement of some of the credits, as LEED is originated in the USA. This study focuses on the assessment of 122 LEED-v3 NC certified buildings in Turkey, considering the points achieved in each category. The aim is to understand which categories are successfully fulfilled and more challenging for implementation. Analysis results show that buildings receive higher points from water efficiency, sustainable sites, innovation and regional priorities, when compared to indoor environmental quality, energy and atmosphere and material and resources categories in Turkey. The lowest category is identified as material and resources. This situation should lead the new projects taking precautions to this individual area especially at the beginning of “planning step” in construction process. Recognizing the successful implementations for earning points and the challenging issues in Turkish construction industry regarding green buildings can be of benefit for professionals in this area.

PROFESSIONAL COMPETENCIES OF ARCHITECTURE GRADUATES: PERCEPTIONS FROM GRADUATES, ACADEMICS AND EMPLOYERS IN THE NIGERIAN CONSTRUCTION INDUSTRY

2018 ◽  
Vol 15 (2) ◽  
pp. 1
Author(s):  
Joy Joshua Maina
Keyword(s):  
Best Practices ◽  
Construction Industry ◽  
Professional Practice ◽  
Core Competencies ◽  
Descriptive Statistics ◽  
Self Report ◽  
Professional Competencies ◽  
Architecture Education ◽  
The Core ◽  
Study Results

The clamour for better quality graduates by architects in the Nigerian Construction Industry (NCI) necessitates a look into the core competencies and the adequacy of architecture education in preparing architecture graduates for professional practice. 116 self-report likertscale questionnaires from architecture graduates (2009-2015), academics and employers were analysed to establish core competencies developed by the graduates while in school. Descriptive statistics, t-tests as well as Mann-Whitney tests for differences in ratings were employed for the study. Results reveal the perceived adequacy of architecture education for the future career of graduates from the academic perspective. Graduates were most proficient at design related competencies while AutoCAD was still considered the most important CAD competency for architecture graduates in the NCI. The study recommends more frequent evaluations of competencies for employability in collaboration with industry as well as embracing BIM related software in line with global best practices. Keywords: Academics, Architecture, Employers, Graduates, Professional competencies, NCI

Alternative Concrete – Geopolymer Concrete

2021 ◽  
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Construction Industry ◽  
Building Material ◽  
Construction Materials ◽  
Raw Material ◽  
Geopolymer Concrete ◽  
Sustainable Solutions ◽  
New Construction ◽  
Alkali Activated

Concrete is the most versatile, durable and reliable material and is the most used building material. It requires large amounts of Portland cement which has environmental problems associated with its production. Hence, an alternative concrete – geopolymer concrete is needed. The general aim of this book is to make significant contributions in understanding and deciphering the mechanisms of the realization of the alkali-activated fly ash-based geopolymer concrete and, at the same time, to present the main characteristics of the materials, components, as well as the influence that they have on the performance of the mechanical properties of the concrete. The book deals with in-depth research of the potential recovery of fly ash and using it as a raw material for the development of new construction materials, offering sustainable solutions to the construction industry.

Moving the Needle: Cultivating Systemic Change in Juvenile Services

2021 ◽  
pp. 89-100
Author(s):  
Kellie Rhodes ◽  
Aisland Rhodes ◽  
Wayne Bear ◽  
Larry Brendtro
Keyword(s):  
Best Practices ◽  
Direct Care ◽  
Clinical Services ◽  
Juvenile Courts ◽  
Community Based ◽  
Complex Needs ◽  
Entry Level ◽  
Community Based Programs ◽  
The Us ◽  
National Partnership

Approximately 1.7 million delinquency cases are disposed in juvenile courts annually (Puzzanchera, Adams, & Sickmund, 2011). Of these youth, tens of thousands experience confinement in the US (Sawyer, 2019), while hundreds of thousands experience probation or are sentenced to community based programs (Harp, Muhlhausen, & Hockenberry, 2019). These youth are placed in the care of programs overseen by directors and clinicians. A survey of facility directors and clinicians from member agencies of the National Partnership for Juvenile Services (NPJS) Behavioral Health Clinical Services (BHCS) committee identified three primary concerns practitioners face in caring for these youth; 1) low resources to recruit and retain quality staff, 2) training that is often not a match for, and does not equip staff to effectively manage the complex needs of acute youth, and 3) the perspective of direct care as an unskilled entry-level position with limited impact on youth’s rehabilitation. This article seeks to address these issues and seeks to highlight potential best practices to re-solve for those obstacles within juvenile services.

scholarly journals Barriers to the Diffusion and Adoption of Green Buildings in Saudi Arabia

2015 ◽  
Vol 5 (4) ◽  
pp. 104 ◽  
Author(s):  
Ibrahim Mosly
Keyword(s):  
Saudi Arabia ◽  
Water Conservation ◽  
Green Building ◽  
Green Buildings ◽  
Government Policies ◽  
Research Approach ◽  
The Public ◽  
Environmental Disasters ◽  
The Us ◽  
And Diffusion

<p>Many countries around the globe have recently pursued sustainability. The public and governments are demanding sustainability due to worldwide environmental disasters caused by pollution and man-made activities that impact the ecological system. Green buildings represent a significant component of sustainability, as their construction is intended to reduce natural resources consumption through energy and water conservation. Saudi Arabia is one of the world’s richest countries, but its number of certified green buildings is notably low. In addition, all of these buildings are certified by the US Green Building Council LEED rating system and not by a national organization. It seems that numerous barriers exist, slowing the development and diffusion of green buildings in Saudi Arabia. Through a systematic qualitative research approach, this research aims to explore barriers to the diffusion and adoption of green buildings in Saudi Arabia, which will facilitate the development of green buildings in Saudi Arabia. This research concludes the identification of 14 green building barriers, with lack of skilled personal and unsupportive government policies and regulations being the most significant barriers.</p>

Driving forces for green building technologies adoption in the construction industry: Ghanaian perspective

2017 ◽  
Vol 125 ◽  
pp. 206-215 ◽  
Author(s):  
Amos Darko ◽  
Albert Ping Chuen Chan ◽  
Samuel Gyamfi ◽  
Ayokunle Olubunmi Olanipekun ◽  
Bao-Jie He ◽  
...  
Keyword(s):  
Construction Industry ◽  
Driving Forces ◽  
Green Building

Strategic Thinking of Construction Material Based on Ecology

2010 ◽  
Vol 150-151 ◽  
pp. 1199-1202
Author(s):  
Hui Pang ◽  
Bing Zhao ◽  
Xiao Min He
Keyword(s):  
Construction Industry ◽  
Construction Material ◽  
Strategic Thinking ◽  
Energy Structure ◽  
Chinese Government ◽  
Gas Emission ◽  
Green House Gas ◽  
The World ◽  
New Energy ◽  
New Construction

Chinese government has announced to the world that, the carbon emission will decrease by 40-45% in 2020, after the World Climate Summit in 2009. To ensure people’s living quality, while limit the green house gas emission, the construction industry - a big energy consumer - must endeavor to explore new construction method, research and develop new construction material and use new energy structure to make our promise come true.

Fatal Falls in the US Construction Industry, 1990 to 1999

2001 ◽  
Vol 43 (10) ◽  
pp. 853-860 ◽  
Author(s):  
Jeffrey Derr ◽  
Linda Forst ◽  
Hua Yun Chen ◽  
Lorraine Conroy
Keyword(s):  
Construction Industry ◽  
The Us

Capital budgeting practices: evidence from Korea

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Taeyeon Kim ◽  
Hongbok Lee ◽  
Kwangwoo Park ◽  
Doug Waggle
Keyword(s):  
Best Practices ◽  
Capital Budgeting ◽  
Developed Countries ◽  
Financial Advisors ◽  
Cost Of Equity ◽  
Content Type ◽  
Capital Costs ◽  
Developed Markets ◽  
The Us ◽  
Ceo Age

PurposeThe authors present the results of a survey on how Korean firms evaluate new projects and estimate their capital costs. The authors report how Korean firms’ capital budgeting practices compare to other developed countries and to best practices in the field of finance.Design/methodology/approachThe authors survey CFOs of major Korean firms on their capital budgeting practices. The authors then compare the results against the US and European firms and best practices of leading firms and financial advisors.FindingsThe authors find that the capital budgeting practices of Korean firms are as strong as or stronger than firms in developed markets. A majority of Korean firms use best practices techniques such as NPV, IRR and the CAPM for project evaluation and cost of equity estimation. Chaebol affiliation results in somewhat stronger capital budgeting practices. The authors also find that other factors, such as company size, leverage, CEO age and CEO education, impact capital budgeting practices.Originality/valueThis paper is the first article that comprehensively examines Korean firms' capital budgeting practices.

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