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 12 of 12 for “"effective depth"”.
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An Investigation into the Effects of an External Electron Acceptor on Nutrient Cycling at the Sediment-Water Interface of the Occoquan Reservoir
… at a concentration greater than 1 mg/L N was effective in controlling the release of phosphorus, iron, and manganese from the sediments after the depletion of oxygen from the hypolimnetic waters of the reservoir. However, when the nitrate concentration above the sediment-water interface was …
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Optimization of Reinforced Concrete Structures
… structures. The design variables are the overall depth, effective depth and width of members, and area of longitudinal reinforcement. In addition, the details such as the amount of web reinforcement and cutoff points of longitudinal reinforcement are also considered as variables. Total cost has …
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An axisymmetric finite element solution for elastic wave propagation through threaded connections
… The energy lost in the joints limits the maximum effective depth of the drill. Several computational techniques are used to efficiently model the problem. Non-reflecting boundaries are used to numerically absorb the waves as they exit a joint. The stored waves are then re-initiated into the next …
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Shear Strength of Full-Scale Prestressed Lightweight Concrete Girders with Composite Decks
… concrete density, concrete compressive strength, effective shear depth, shear span-to-effective depth ratio, the amount of shear reinforcement, and the composite cross-sectional area. Results show that the sand-lightweight concrete girders exceeded the expected shear strength according to the 2010 …
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Resistência ao esforço cortante em vigas curtas de concreto leve, sem armadura transversal
… greatly affected by the ratio of shear span to effective depth, a/d. Thus, for directly loaded beams with a/d ratios smaller than 2.5 (named "short beams") the shear strenght increases sharply, due to the presence of a significant vertical compressive stress component between the load and …
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Shear strengthening and repair of deep beams with and without web reinforcement using near-surface mounted CFRP bars
… group of deep beams has the same shear span to effective depth ratio at 0.864. Group G1 consists of two beams as a control specimens and each one differs depending on either with web and without web reinforcement. Groups G2 to G5 consists of initially strengthened or pre-cracked and repaired …
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Anonymous Indoor Positioning System using Depth Sensors for Context-aware Human-Building Interaction
… thesis focused on exploring and investigating "depth sensors" application in detecting occupants' indoor positions to be used for smarter management of energy consumption in buildings. An interconnected passive depth-sensor-based system of occupants' positioning was investigated for …
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Shear strengthening of pre-cracked and non pre cracked reinforced concrete continuous beams using bi directional CFRP strips
… as a strengthening and repairing material is an effective method to enhance the shear capacity of the beam. Extensive researches have been conducted on the shear strengthening of reinforced concrete simply supported beams using FRP composites. However, strengthening continuous beams in shear have …
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Pedogenesis, weathering processes, and elemental distribution along a soil climosequence in the southern Piedmont
… from north to south on the Piedmont. The effective depth of pedogenesis in the Georgia and Alabama soils studied is nearly twice that of soils in Virginia and North Carolina, closely corresponding to calculated effective leaching indices developed for each site. Kaolinite and gibbsite are …
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Influencia del tipo de suelo en el estado nutricional de la vid, el desarrollo vegetativo, la producción, la composición de la uva y de los vinos de la variedad Tempranillo tinto (Vitis vinífera L.) en el ámbito de la D.O.Ca Rioja
… In terms of physicochemical characteristics, effective depth and useful water reserve were associated with higher vigor, yield and lower content of polyphenols and anthocyanins in grape and wine, while the available nitrogen was negatively correlated with polyphenol content and Anthocyanins …
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Shear transfer between precast prestressed bridge beams and in-situ concrete crosshead in continuous structures
… and web shear connectors were utilized effectively. The effect of projecting bars was also examined. In the general behaviour of composite continuous beams subjected to shear a detailed comparison was made between different Code predictions for the web cracking shear and web crushing …
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Influencia de la distribución de la carga en la capacidad resistente a cortante en elementos sin armadura transversal : estudio teórico y experimental
… to the load being greater than 2.5 times the effective depth of the elements. It is also observed that most tests are carried out using reinforcement ratios very much above the values common in engineering practice, this fact being due to the need of avoiding failure in bending coming before …