• General Article

    Spillover effect of LEED-Energy Star certified office buildings on market values in New York city
    MinJae Suh, Annie R. Pearce, Yang Zhang, Kenneth S. Sands II, Yonghan Ahn and Kyungki Kim
    Although the LEED and Energy Star certifications are designed primarily to protect the natural environment and promote the quality of life, they ... + READ MORE
    Although the LEED and Energy Star certifications are designed primarily to protect the natural environment and promote the quality of life, they also produce positive economic benefits for the stakeholders of certified buildings. These economic benefits are expected to extend to some extent to their immediate neighboring buildings, thus encouraging growth in the local real estate market and partially satisfying the triple bottom line of sustainability. This study examined the impact of a LEED and/or Energy Star certified office building on the median unit market value of neighboring buildings in New York City based on five different proximity bands relative to the certified office building. Both spatial and statistical methods were utilized. LEED and/or Energy Star certified office buildings were found to exert various spillover effects on the median unit market value of buildings in each sub-neighborhood depending on the proximity of each building to the LEED and/or Energy Star certified office building. These spillover effects support the mutual growth of LEED and/or Energy Star certified office buildings and their neighborhoods from a socio-economic standpoint. - COLLAPSE
    September 2020
  • General Article

    Evaluating stakeholder’s satisfaction with the performance of selected seaports in Nigeria
    Mekwa Eme Mekwa and Naziah Muhamad Salleh
    Aside the high competition between seaports, the quest for economic performance and satisfying the port’s stakeholders has become a great challenge ... + READ MORE
    Aside the high competition between seaports, the quest for economic performance and satisfying the port’s stakeholders has become a great challenge for port operators and managers. In an attempt to perform optimally and achieve the intended goals of their establishment and meeting the needs of the society, ports performance needs to be measured at regular intervals with the key performance indicators. This study was carried out in Nigeria with the aim of ascertaining the performance of 6 seaports in 5 key performance indicators with respect to the environment, health and safety/security, congestion, corporate relations, and organization. 120 questionnaires were distributed, and 83 usable responses were received. The data was analyzed descriptively using the mean score. The results obtained show that the stakeholders were mostly dissatisfied with congestion while cooperative relations, health and safety/security, and environment were rated slightly high, and environmental performance was rated to have performed high. The results imply that the port stakeholders are substantially satisfied with the performance of the ports except for the rate of congestion. More efforts need to be put in place by the government and the port managements in decongesting the ports through the provision of efficient transportation networks to and from the ports like railway and more access roads. Also, efforts should be made to sustain and improve the current gains in other performance indices where performance was high. - COLLAPSE
    September 2020
  • General Article

    Green building strategies for LEED-certified laboratory buildings: comparison between gold and platinum levels
    Jinho Kim
    Laboratory facilities at higher education institutions are increasingly utilizing green building strategies to decrease their environmental footprint. The U.S. Green Building ... + READ MORE
    Laboratory facilities at higher education institutions are increasingly utilizing green building strategies to decrease their environmental footprint. The U.S. Green Building Council’s Leadership in Energy and Environmental Design (LEED) rating system has been developed and widely applied over the past two decades. During this time, comparative studies of LEED strategies have not been rare, but case studies of specific building types are still called for. This paper presents eight case studies of LEED Gold- and Platinum-certified laboratory facilities (four each) in order to examine and compare the integrated design strategies that achieved LEED credits of five LEED categories: Sustainable Sites, Water Efficiencies, Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. The following conclusions were drawn. First, the Optimize Energy Performance credit (from the Energy and Atmosphere category) played a critical role in higher ratings, through integrating innovative architectural designs to maximize energy efficiency and requiring the client’s commitment to and investment in renewable energy and green power. Second, higher scores were obtained by active engagement in stormwater design, innovative wastewater technologies, and daylight and views. Lastly, university-level commitment and master planning efforts are critical to introduce an integrated design approach from the early project stage. These findings will provide meaningful references and guidelines for university administrators, architects, engineering consultants, and related stakeholders. - COLLAPSE
    September 2020
  • General Article

    Estimation of the volume of a rock layer using kriging method for energy efficient excavation
    Hua Zhuang, Jeonghwan Kim, Soomin Lee and Jongwon Seo
    It is proven fact that the efficiency of earthwork hugely affects the overall infrastructure construction project in terms of cost and time ... + READ MORE
    It is proven fact that the efficiency of earthwork hugely affects the overall infrastructure construction project in terms of cost and time. Accuracy of earthwork estimation, especially the estimation of a rock layer directly affects the overall productivity since rock layer excavation requires additional rock breaking process to break down the rock layer into manageable smaller pieces. In order to make a decision on the construction method in the construction area, earthwork engineers must have an intuitive understanding of the distribution of underground rock strata. The only available way to estimate rock layers is acquiring boring data from an actual earthwork site and interpolate each layer. Accurate modeling of the rock layer is of utmost important process during earthwork estimation for planning energy efficient excavation. This study used Kriging interpolation, as an important research content of geological three-dimensional visualization to accurately create rock layer. Kriging interpolation not only considers the spatial relationship between variables, but also takes into account the structural and stochastic characteristics of variables, so that it can fully represent the structural information of regionalized variables. The accuracy of rock mass calculation is analyzed by means of actual dataset from a test site, and it showed that the accuracy of Kriging-based model excels the original model. - COLLAPSE
    September 2020
Journal Informaiton International Journal of Sustainable Building Technology and Urban Development International Journal of Sustainable Building Technology and Urban Development
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