Case study of modifications to a wood ‘‘I’’ beam framed floor‐ceiling assembly which did not meet minimum International Building Code (IBC) impact insulation class (IIC) or sound transmission class (STC)

2005 ◽  
Vol 118 (3) ◽  
pp. 1919-1920
Author(s):  
Elzo F. Gernhart
Keyword(s):  
Sound Transmission ◽  
Building Code ◽  
Sound Transmission Class

A case study in the measurement of door sound isolation with ASTM test standards

2021 ◽  
Vol 263 (3) ◽  
pp. 3504-3510
Author(s):  
Christopher Ono ◽  
Todd Beiler ◽  
Devin Clausen
Keyword(s):  
Sound Transmission ◽  
Test Methods ◽  
Sound Insulation ◽  
Performance Requirement ◽  
Test Standards ◽  
Critical Design ◽  
Minimum Requirements ◽  
Sound Transmission Class ◽  
Testing Standards

The use of the door transmission class rating in lieu of the apparent sound transmission class rating has yet to gain traction within building codes and specified project requirements. This paper presents a case study involving performance requirement testing conducted at a university's media facility, in which sound insulation properties were a critical design and construction focus. Both test methods described in ASTM E2964 and ASTM E336 were performed where a door was the test partition. Door transmission class ratings were presented in comparison to apparent sound transmission class ratings for the same partition. Testing was performed in a variety of situations, including scenarios both inside and outside of the minimum requirements of testing standards. Our analysis considers the effectiveness of the recently adopted ASTM E2964 in comparison to the methods of the ASTM E336. We also consider some of the subtle differences between the two test methods and how they may impact the testing of certain adjacencies.

scholarly journals An Examination of the Performance Based Building Code on the Design of a Commercial Building

2012 ◽  
Vol 7 (1) ◽  
pp. 37-44 ◽  
Author(s):  
John Greenwood
Keyword(s):  
Quality Control ◽  
Western Australia ◽  
Control Measures ◽  
Assessment Process ◽  
Building Code ◽  
Commercial Building ◽  
Alternative Design ◽  
Alternative Designs ◽  
The Impact

The Building Code of Australia (BCA) is the principal code under which building approvals in Australia are assessed. The BCA adopted performance-based solutions for building approvals in 1996. Performance-based codes are based upon a set of explicit objectives, stated in terms of a hierarchy of requirements beginning with key general objectives. With this in mind, the research presented in this paper aims to analyse the impact of the introduction of the performance-based code within Western Australia to gauge the effect and usefulness of alternative design solutions in commercial construction using a case study project. The research revealed that there are several advantages to the use of alternative designs and that all parties, in general, are in favour of the performance-based building code of Australia. It is suggested that change in the assessment process to streamline the alternative design path is needed for the greater use of the performance-based alternative. With appropriate quality control measures, minor variations to the deemed-to-satisfy provisions could easily be managed by the current and future building surveying profession.

What did the 2015 earthquake tell us about what the state of earthquake resilience in Kathmandu metropolitan city was?

2019 ◽  
Vol 10 (2/3) ◽  
pp. 188-202
Author(s):  
Tej Kumar Karki
Keyword(s):  
Content Analysis ◽  
Field Observation ◽  
The State ◽  
Building Code ◽  
Content Type ◽  
Metropolitan City ◽  
Detailed Case ◽  
Media Reports ◽  
Earthquake Resilience

Purpose This paper asks what was the state of building-code enforcement and citizen – government collaboration in disaster preparedness when an earthquake hit Kathmandu metropolitan city (KMC) in 2015? It reviewed government documents, analyzed media reports, interviewed building-code monitoring officers and carried out a detailed case study of the earthquake-damaged Park View Horizon Housing Apartment (PVHA) Complex. The research found several earthquake-resilience issues. They were enforcement-vulnerability (Building bylaws, planning permit and building code); institutional-coordination vulnerability; Apartment-regulation vulnerability; technological vulnerability; and citizen-government-collaboration vulnerability. Design/methodology/approach The study area of this research is KMC, and this research is based on content analysis, field observation and interview. It has reviewed all the newspapers and media reports that had covered earthquake issues during and after the 2015 disaster, as well as the articles published in Nepal, South Asia, the USA, New Zealand and Haiti. The literature on Nepal’s building code, seismic history and institutional arrangements for governing earthquake-related issues were reviewed. After field observation of some of the damaged apartments, a detailed case study of PVHA Complex was carried out. Findings The research found several earthquake-resilience issues. They were enforcement-vulnerability (Building bylaws, planning permit and building code); institutional-coordination vulnerability; Apartment-regulation vulnerability; technological vulnerability; and citizen-government-collaboration vulnerability Research limitations/implications A limitation of this study was its heavy reliance on content analysis, one case study and a few interviews and discussions with affected residents, local governments and developers. Practical implications This study would help enhance disaster governance in developing nations. Social implications The citizen–government collaborative approach to earthquake resilience would enhance human resilience to disaster at individual and community levels. Originality/value Since this is the first research carried out on the state of building code and institutional resilience at the time of the 2015 earthquake in Nepal, it is original and provides policy insights for earthquake resilience in Nepal.

Implementing Nepal's National Building Code: A Case Study in Patience and Persistence

2017 ◽  
Vol 33 (1_suppl) ◽  
pp. 167-183 ◽  
Author(s):  
Lucy Arendt ◽  
Ayse Hortacsu ◽  
Kishor Jaiswal ◽  
John Bevington ◽  
Surya Shrestha ◽  
...  
Keyword(s):  
Earthquake Engineering ◽  
Relative Effectiveness ◽  
Building Code ◽  
National Society ◽  
Gorkha Earthquake ◽  
Engineering Research ◽  
2015 Gorkha Earthquake ◽  
Code Compliance ◽  
And Training

The April 2015 Gorkha earthquake in Nepal revealed the relative effectiveness of the Nepal Standard or the national building code (NBC), and irregular compliance with it in different parts of Nepal. Much of the damage to more than half a million residential structures in Nepal may be attributed to the prevalence of owner-built or owner-supervised construction and the lack of owner and builder responsiveness to seismic risk and training in the appropriate means of complying with the NBC. To explain these circumstances, we review the protracted implementation of the NBC and the role played by one organization, the National Society for Earthquake Technology—Nepal (NSET), in the implementation of the NBC. We also share observations on building code compliance made by individuals in Nepal participating in workshops led by the Earthquake Engineering Research Institute's 2014 class of Housner Fellows.

scholarly journals Quantification of Optimal Target Reliability for Seismic Design: Methodology and Application to Midrise Steel Buildings

2021 ◽  
Author(s):  
Kasra Habibi ◽  
S. Saeid Hosseini Varzandeh ◽  
Mojtaba Mahsuli
Keyword(s):  
Seismic Design ◽  
The United States ◽  
Construction Cost ◽  
Building Code ◽  
Steel Buildings ◽  
Base Shear ◽  
Risk Models ◽  
Concentrically Braced Frame ◽  
Optimal Target

Abstract Quantification of the optimal target reliability based on the minimum lifecycle cost is the goal standard for calibration of seismic design provisions, which is yet to be fully-materialized even in the leading codes. Deviation from the optimally-calibrated design standards is significantly more pronounced in countries whose regulations are adopted from the few leading codes with no recalibration. A major challenge in the quantification of optimal target reliability for such countries is the lack of risk models that are suited for the local construction industry and design practices. This paper addresses this challenge by presenting an optimal target reliability quantification framework that tailors the available risk models for the countries from which the codes are adopted to the local conditions of the countries adopting the codes. The proposed framework is showcased through the national building code of Iran, which is adopted from the codes of the United States, using a case study of three midrise residential steel building archetypes. The archetypes have various structural systems including intermediate moment-resisting frame (IMF) and special concentrically braced frame (SCBF). Each of these archetypes are designed to different levels of the base shear coefficient, each of which corresponds to a level of reliability. To compute the lifecycle cost, the initial construction cost of buildings is estimated. Next, robust nonlinear models of these structures are generated, using which the probability distribution of structural responses and the collapse fragility are assessed through incremental dynamic analyses. Thereafter, the buildings are subjected to a detailed seismic risk analysis. Subsequently, the lifecycle cost of the buildings is computed as the sum of the initial construction cost and the seismic losses. Finally, the optimal strength and the corresponding target reliability to be prescribed are quantified based on the notion of minimum lifecycle cost. The results reveal a 50-year optimal reliability index of 2.0 and 2.1 for IMF and SCBF buildings, respectively and an optimal collapse probability given the maximum considered earthquake of 16% for both systems. In the context on the case study of the national building code of Iran, the optimal design base shear for IMF buildings is 40% higher than the current prescribed value by the code, whereas that of SCBF buildings is currently at the optimal level.

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