Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 87 for “"design codes"”.
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Evaluation of Tsunami Design Codes and Recommendations for Bridges Susceptible to Tsunami Inundation
… strategies and to a lesser extent, building design. Although many of the bridges that lie within possible tsunami inundation zones provide critical lifelines to coastal communities, the effects of tsunamis on transportation systems have not been evaluated. The high fluid velocities, wave …
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Reliability Analysis of the HEC-18 Scour Equation and AASHTO Deep Foundation Design Codes
… and live loads, and their combinations. The design of the foundation followed the procedures of the AASHTO LRFD Bridge Design Specification. The design methods were the HEC-18 pier scour equation used to determine the scour depth, and the α-Method and Nordlund-Thurman Method used to design …
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Filleting of aircraft components using non-uniform B-spline surfaces
Conceptual and preliminary aircraft design codes have different geometry requirements. Conceptual design codes use component based models, while preliminary design codes require a more complete and integrated geometry. An automatic procedure to convert between the two types of models would prevent …
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Intersection and filleting of non-uniform B-spline surfaces
Preliminary aircraft design codes requIre a more complete and integrated geometry definition than that used by conceptual design codes. This thesis documents the design and creation of an interactive CAD system which converts the geometry descriptions commonly used in conceptual aircraft design …
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A Computer Program for the Coupled Implementation of Meanline and Throughflow Methods to Simplify the Aerodynamic Design of Multistage Axial Compressors
… of simplifying the preliminary aerodynamic design process of multistage axial compressors has been developed. This interactive design tool, named C-STAAC, combines the Meanline and Throughflow analysis capabilities of two independent compressor design codes to form one standalone system. The …
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The design and engineering of a reactor test facility for thermal processing of biomass
This thesis describes the design and engineering of a pressurised biomass gasification test facility. A detailed examination of the major elements within the plant has been undertaken in relation to specification of equipment, evaluation of options and final construction. The retrospective project …
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Holistic approach in engineering design - controlling risks from accidental hazards in bridge design
Engineering design, in concise terms, is what engineers do using what they know. It is the underlying decision making activity that determines what is to be built and how it should be built. An ever present requirement in engineering design is that the structure should be safe. While historical …
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Seismic vulnerability assessment of off-ramp structures of the Las Vegas downtown viaduct
… by moment-curvature analysis. Then, the existing design of the bridge columns was compared to the requirements of the current bridge design codes. In the second stage, the moment, shear and deformation demands on the columns due to a strong earthquake were determined using the seismic provisions …
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Effect of Lateral Stiffness on Bridge Deck Performance
The use of the empirical deck design method has increased its acceptance due to the economic advantages that it presents when compared to its counterpart, the traditional method. This can be attributed to the fact that the empirical method provides an appropriate design where the deck withstands …
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Target reliability index optimization framework for building classes
… invest the limited societal resources in the design of the buildings. To achieve economically viable and safe building structures, careful assessment of risk from future hazards is required. In practice, the risk to building structures is regulated by structural design codes through target …
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Design of wind turbines with Ultra-High Performance Concrete
… Concrete (UHPC) has proven an asset for bridge design as it significantly reduces costs. However, UHPC has not been applied yet to wind turbine technology. Design codes do not propose any recommendations or guidance for the towers, thus encouraging the engineer to use less effective traditional …
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Shear Strength of Full-Scale Prestressed Lightweight Concrete Girders with Composite Decks
Although design codes have accepted lightweight concrete as a suitable structural material for nearly 50 years, there is still a good deal of uncertainty as to how to calculate the strength of this material when designing for shear in beams. Design codes tend to penalize lightweight concrete due to …
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Nonlinear behavior of reinforced concrete structures under seismic excitation
… of the structural behavior, the building will be designed based on modem design codes. Ultimately, this approach aims to define a range in which engineers can use a linear approximation to determine certain performance metrics like interstory drift and floor accelerations.
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Computational wind engineering using finite element package ADINA
Design of tall and long span structures is governed by the wind forces. Inadequate research in the field of wind dynamics has forced engineers to rely on design codes or wind tunnel tests for sufficient data. The present work uses a computational wind dynamics method to compare the coefficient of …
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Design for Serviceability - A probabilistic approach
In many design situations the acceptable performance of structures is defined by serviceability requirements. To estimate the probability of serviceability failure three main design aspects should be considered: (1) the relevant exposures, (2) the structural response and (3) the performance …
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Multi-hazard design of mid- to high-rise structures
The importance of multi-hazard design of structures has emerged in the last decade, as extensive media coverage of natural disasters have increased public awareness of the catastrophic damage that hurricanes and earthquakes can wreak on buildings and infrastructure. Current design codes treat …
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Beam behaviour of hybrid steel sections
… such as savings in material and costs, existing codes of practice contain few guidelines on how to design such members. Apart from the lack of design guidelines, recommendations in many steel design codes apply only to steel grades with specified yield strength less than 460MPa. The purpose of …
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Estudo do comportamento pós-crítico de paredes esbeltas de perfis metálicos
… width method and are used to assess several design prescriptions and past propositions. The experimental investigation incluedd tests of three specimens formed by lipped channel profiles under concentric loading. Based on the experimental measurements, a general formulation to describe the …
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Longitudinal shear resistance of steel and concrete composite beams
… In addition, the applicability of the existing design codes and the standard specimen used in assessing the strength of stud connectors, has also been examined. Push tests are typically employed to find the experimental resistance of stud connectors and in the past have been used to develop and …
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Behaviour of multi-storey cross-laminated timber buildings under lateral loading
… already been completed. The lack of structural design codes and limited literature regarding the performance of CLT buildings under lateral loading are barriers to the adoption of CLT for buildings which could experience high lateral loading. Previous research into the behaviour of CLT buildings …
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