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Observational analysis of twentieth century summer climate over North America
(Massachusetts Institute of Technology, 2016)
How did the climate of the central United States change over the course of the twentieth century? In this study, multiple complementary statistical analyses were carried out on weather and agricultural production data in ...
An investigation of the reaction kinetics of photocatalytic wastewater treatment using suspended titanium dioxide catalyst
(Massachusetts Institute of Technology, 2014)
The goal of wastewater treatment is to remove compounds that may be harmful to the natural ecosystem or to humans. Although traditional treatment is fairly effective in meeting water quality standards, current technologies ...
Geometrical optimization of arched structures under stochastic loading
(Massachusetts Institute of Technology, 2016)
This thesis presents a method for determining the moment-optimized shape y(x) for arched structures under unpredictable loading scenarios. A frame geometry optimization derivation is presented that demonstrates the ...
Shore-parallel sediment transport by waves and tides in inner shelf waters
(Massachusetts Institute of Technology, 2016)
In shallow waters the combined action of waves and currents significantly affects the motion of sediment on the bottom, and hence the nature and phase of their interactions with each other contribute to the shaping of the ...
Nonlinear analysis of topology-optimized scissor-like elements during deployment and structural performance analysis
(Massachusetts Institute of Technology, 2020)
Deployable structures, known for their flexibility and adaptability, have gained popularity in applications such as emergency shelters, aerospace structures, and sports facility roofs. One of many commonly used deployable ...
Design and performance of Thomas Telford's Bonar Bridge and Mythe Bridge
(Massachusetts Institute of Technology, 2018)
This paper assesses two cast-iron arch bridges of Thomas Telford (1757-1834) - Bonar Bridge (1810-12) and Mythe Bridge (1824-26) - to draw a broader conclusion about his career in bridge building. The bridges are introduced ...
Designing structures with tree forks : mechanical characterization and generalized computational design approach
(Massachusetts Institute of Technology, 2020)
Timber structures have seen a resurgence in structural design in recent years due to a desire to reduce embodied carbon in the built environment. While many of these structures use standardized or regular elements, the ...
Evaluation of the design space for reinforced concrete building components subject to blast loading
(Massachusetts Institute of Technology, 2020)
As the built environment becomes more complex, designers must consider extreme loading when it is necessary to anticipate structural response to rare hazards in addition to the expected loading conditions associated with ...
Spider web geometry inspires long span roof trusses
(Massachusetts Institute of Technology, 2020)
This research explores the methods and results used to learn from spider web geometries and implement them into a practical long span roof truss structure. Specifically, utilizing data and properties of spider webs found ...
Analysis and reproduction of geopolymer concrete
(Massachusetts Institute of Technology, 2020)
Geopolymers are inorganic polymers based on aluminosilicates that are produced from synthesizing pozzolanic compounds or aluminosilicate source materials with highly alkaline solutions. Geopolymer concrete is a stronger, ...