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Full-Text Articles in Engineering
Developing Implementable Policies Targeting Sustainable Building Construction Through International Policy Diffusion, Melisa Ciara Hancock
Developing Implementable Policies Targeting Sustainable Building Construction Through International Policy Diffusion, Melisa Ciara Hancock
Boise State University Theses and Dissertations
The buildings and construction sector is one of the biggest sources of greenhouse gas emissions and contributes to vast list of negative impacts humans have on the environment through material production, natural resource usage, and waste. While many organizations like the United Nations (UN), OECD (Organization for Economic Co-operation and Development), and Architecture 2030 have been advocating for a shift to sustainability within the sector for decades, there is still a major disconnect between countries that have and haven’t implemented sustainability into all practices. This research focuses on analyzing the content of national building codes for their level of sustainability …
Using Differential Shear Strain Measurements To Monitor Crosstie Support Conditions In Railroad Tracks, D. Kody Johnson
Using Differential Shear Strain Measurements To Monitor Crosstie Support Conditions In Railroad Tracks, D. Kody Johnson
Boise State University Theses and Dissertations
This thesis details a comprehensive numerical analysis of load determination, and crosstie support assessment and monitoring using strain gauges to measure differential rail shear strain in ballasted railroad tracks due to applied railcar wheel loads. These differential shear strain measurements can be related to applied wheel loading and crosstie support reactions through the geometric and constitutive properties of a given rail section. The basic theory behind the measurement technique was reviewed and investigated using finite element models of varying complexity. The impact of field conditions such as differential ballast and subgrade support, track stiffness, crosstie spacing, gauge installation location, and …