En este artículo, se realizó un análisis de infiltración de agua en la presa de tierra Coltani ubicada en el departamento de Tacna, Perú. Primero, se realizó un análisis de infiltración mediante el programa Slide el cual permite evaluar flujos de agua por medio de la hipótesis flujo permanente, de manera bidimensional y con un suelo isotrópico. Luego, se estudió la infiltración del agua subterránea de la presa Coltani tanto en su condición inicial como en su condición con muro pantalla. En esta última, se consideró como referencia el caudal de infiltración máximo permisible para proponer las alternativas en relación a su ubicación. Se consideró un diámetro de 1.5 metros y una profundidad de 30 metros con posibles ubicaciones al inicio, centro y final de la presa. Finalmente, se obtuvieron diversos resultados de caudales de salida en el primer estrato del suelo demostrando el impacto generado por las diversas ubicaciones de los pilotes secantes como muro impermeable. Se obtuvo como principal resultado, la ubicación ideal de los pilotes secantes al final de la presa Coltani con un valor de infiltración del agua subterránea de 0.00276 m3/s en el estrato inicial, verificándose en relación al caudal de infiltración máximo permisible (Qfmp). / In this article, a water seepage analysis was performed in the Coltani earth dam located in the department of Tacna, Peru. First, a seepage analysis was carried out using the Slide program, which allows to evaluate water flows through the permanent flow hypothesis, in a two-dimensional way and with an isotropic soil. Subsequently, the seepage of the underground water from the Coltani dam was studied, both in its initial condition and in its condition as a barrier wall. The maximum allowable seepage flow was considered as a reference to propose the alternatives in relation to its location. A diameter of 1.5 meters and a depth of 30 meters were considered with possible locations at the beginning, center and end of the dam. Finally, various outflow results were obtained in the first soil stratum, demonstrating the impact generated by the various locations of the secant piles as an impermeable wall. The main result was the ideal location of the secant piles at the end of the Coltani dam with a groundwater seepage value of 0.00276 m3/s in the initial stratum, verified in relation to the maximum allowable seepage flow (Qfmp). / Trabajo de investigación

Este documento tiene como objetivo brindar propuestas de mejoramiento para evitar las infiltraciones en la presa Coltani - Tacna realizando un análisis del expediente técnico de la obra, la cual está actualmente paralizada. Estas serán realizadas por medio de la implementación de un muro impermeable conformado por Pilotes Secantes la cual es una técnica utilizada en presas de tierra para afrontar esta clase de problemas de ingeniería civil. La investigación estará dividida en secciones estratégicas para el entendimiento global, manteniendo un orden de la información. Primero, se definirán conceptos generales como los tipos de presas de tierra, sus elementos principales, requerimientos técnicos, principales fallas, técnicas de mejoramiento de suelos, infiltraciones, entre otros. Posteriormente se detallarán las características generales y específicas, tanto geológicas como geotécnicas del terreno del proyecto, recopilando la información necesaria del estudio de suelos. Luego se procederá a realizar un análisis de infiltración, mediante el uso del programa SLIDE, analizando el comportamiento del flujo del agua y caudales respuesta de la presa en su condición inicial, es decir sin la implementación del muro pantalla. Una vez analizado este comportamiento, se procederá a obtener el Caudal de Infiltración Máximo Permisible, cuyo valor servirá de base para las diferentes propuestas a considerar. Las variaciones de las alternativas para el control de infiltraciones estarán en base a dos diámetros diferentes (1.3 y 1.5m) de Pilotes Secantes con 3 posibles ubicaciones distintas, respecto a la presa (inicio, centro y final), con profundidades comprendidas entre 10 – 59m. Después se analizará el proceso constructivo de la técnica, la comparación en términos económicos respecto al costo de ejecución y se presentaran los planos y esquemas de las respectivas propuestas a considerar. Finalmente se elegirá la alternativa que presente un mayor potencial en base a la constructabilidad y costo para ser implementada como solución de la infiltración del agua en la presa Coltani. / The purpose of this document is to provide improvement proposals to avoid seepage in the Coltani - Tacna dam by analyzing the technical record of the project, which is currently paralyzed. These will be carried out through the implementation of an impermeable wall made up of Secant Piles, which is a technique used in earth dams to face this kind of civil engineering problems. The research will be divided into strategic sections for global understanding, maintaining an order of information. First, general concepts such as the types of earth dams, their main elements, technical requirements, main faults, soil improvement techniques, seepage, among others, will be defined. Subsequently, the general and specific characteristics, both geological and geotechnical, of the project land will be detailed, compiling the necessary information from the soil study. Then, a seepage analysis will be carried out, using the SLIDE program, analyzing the behavior of the water flow and response flows of the dam in its initial condition, that is, without the implementation of the screen wall. Once this behavior has been analyzed, the Maximum Permissible Seepage Flow will be obtained, whose value will serve as the basis for the different proposals to be considered. The variations of the alternatives for seepage control will be based on two different diameters (1.3 and 1.5m) of Secant Piles with 3 different possible locations, according to the dam (start, center and end), with depths between 10 - 59m. Afterwards, the construction process of the technique will be analyzed, the comparison in economic terms by the execution cost and the plans and diagrams of the respective proposals to be considered will be presented. Finally, the alternative that presents the greatest potential based on constructability and cost will be chosen to be implemented as a solution for water seepage in the Coltani dam. / Tesis

No description available.

This project proposes a new urban aquifer strategy that utilizes stormwater to create a cascading plaza and an improved 'great street' in Washington DC. A system of urban aquifers is developed beneath the surface of the street, perched atop the compacted, impermeable soils below. This set of aquifers prevents stormwater from entering the existing combined sewer and allows trees to draw water from this new groundwater source and develop expansive root systems. On the surface, stormwater flows through interconnected planters where it irrigates and is filtered by vegetation before infiltrating to recharge the aquifer. At Cascade Plaza, sloping topography intersects the aquifer, and the new groundwater seeps out of the plaza steps, turning them into a miniature cascade, by gravity and water pressure alone. It collects in a web of runnels, pools at the lowest point, and overflows in high water, mysteriously disappearing below ground again to fill an underground reservoir. In this unique ecological system, water flows both above and below ground to mitigate excess stormwater and make the street and plaza more beautiful. / Master of Landscape Architecture

El presente trabajo de investigación pretende encontrar el diseño de un concreto permeable con la mejor relación agua/cemento, para ser usado en vías peatonales y de bajo tránsito. Además, busca demostrar que su empleo en zonas lluviosas reduce el volumen pluvial y atenúa el impacto que se produce en las poblaciones urbanas, como la ciudad de Huaraz, en las que existen continuas inundaciones debidas al uso de técnicas y métodos que provocan la impermeabilización del suelo. Se ejecutaron ensayos en laboratorio sobre la base de tres muestras con relaciones agua/cemento de 0.30, 0.35 y 0.40. Luego de someterlas a pruebas de compresión simple, flexión y permeabilidad, se encontró que el diseño que cumple con las mejores características es el de relación agua/cemento 0.30. Se concluye que, para la realidad problemática descrita, el uso de un concreto permeable con dicha relación es viable en tanto este posee un coeficiente de permeabilidad k de 0.44 mm/s o 0.44 x 10-3 m/s., que se equipara a un suelo de arena limpia con mezcla de grava y se comporta como un suelo granular. Por lo tanto, contribuirá a absorber las escorrentías, incluso en zonas con una pendiente pronunciada. / The present research work aims to find the design of a permeable concrete, with the best water/cement ratio to be used in pedestrian and low-traffic pavements. In addition, it seeks to demonstrate that use in rainy areas reduces the rainfall volume and attenuate the impact that occurs in urban populations, such as the city of Huaraz, where there are continuous floods due to the use of techniques and methods that cause the waterproofing of the soil. Laboratory tests were performed on the basis of three samples with water/cement ratios of 0.30, 0.35 and 0.40. After undergoing tests of simple compression, bending and permeability, it was found that the design that meets the best characteristics is the one of water/cement ratio 0.30. It is concluded that, for the problematic reality described, the use of a permeable concrete with this relationship is feasible as it has a permeability coefficient k of 0.44 mm/s or 0.44 x 10-3 m/s, which sand equates to a clean sand soil with gravel mixture. Therefore, it will help absorb runoffs, even in areas with a steep slope. / Tesis

Hoy en día, sabemos que la pandemia del coronavirus ha afectado a muchos sectores económicos, trayendo pérdidas e indicadores negativos para el país. Sin embargo, algunas micro y pequeñas empresas han logrado enfrentar esta situación reinventándose en nuevos proyectos por las nuevas necesidades que surgieron. Ante lo mencionado, a través del presente trabajo de investigación explicaremos cómo nació una nueva idea de negocio mediante la búsqueda de oportunidades que se presentó y metodologías ágiles que validaron la ejecución del proyecto en largo plazo que dure. En la etapa inicial, se realizó una lluvia de ideas de todos los integrantes para conocer cuál sería la más viable que genere rentabilidad. Por ello, se seleccionó la idea de crear ropa con tela impermeable, ya que se buscó que este material puede evitar que las personas lleven consigo virus o bacterias a sus hogares, los proteja y pueda lavarlo de manera fácil sin dañar el diseño de la ropa. Por otro lado, realizamos un planeamiento estratégico a 3 años que dura el proyecto mediante herramientas como la matriz EFI y EFE, cadena de valor, análisis PEST, matriz de Ansoff, matriz I/E y el FODA. Esto nos permitió, plantear estrategias competitivas para poder aprovechar las nuevas oportunidades y enfrentar las amenazas. Asimismo, se realizaron distintos presupuestos para cada área del organigrama planteado y la elaboración de la proyección de ventas a 3 años. Finalmente, elaboramos un plan financiero donde se indica los montos que genera las ventas del negocio con sus respectivos estados financieros e indicadores que validan la rentabilidad para las personas que deseen invertir. / Today, we know that the coronavirus pandemic has affected many economic sectors, bringing losses and negative indicators for the country. However, some businesses, such as micro and small companies, have managed to face this situation by reinventing themselves in new projects due to the new needs that arose. Given the above, through this research work we will explain how a new business idea was born through the search for opportunities that were presented and agile methodologies that validated the execution of the Project. In the initial stage, all the members were brainstormed to find out which would be the most viable to generate profitability. For this reason, the idea of ​​creating clothing with waterproof fabric was selected, since it was sought that this material can prevent people from carrying viruses or bacteria to their homes, protect them and can wash it easily without damaging the design of the clothing. On the other hand, we carry out a 3-year strategic planning that lasts the project using tools such as the EFI and EFE matrix, value chain, PEST analysis, Ansoff matrix, I / E matrix and SWOT. This allowed us to propose competitive strategies to take advantage of new opportunities and face threats. Likewise, different budgets were made for each area of ​​the proposed organization chart. Finally, we prepare a financial plan where the amounts generated by the sales of the business are indicated with their respective financial statements and indicators that validate the profitability for the people who wish to invest. / Trabajo de investigación

This thesis deals with examining the possibility of revitalizing the watercourse Osoblaha. It flows through the cadastral territories of municipalities Bohušov, Osoblaha and Kašnice u Bohušova. In this thesis there will be proposed a measure to increase biodiversity of the flow. The trough will be loosened in appropriate segments, oxbow lakes and ponds will be designed. Also the bank shelters for fish stock will be suggested. For slope stabilization will be used reinforcement of fresh willow fences. Impermeable shoots or disintegrating oxbow lakes will be projected in the straight sections of the flow.

The subject of this thesis is also dealt with construction of the second phase of the congress and wellness centre in Jinačovice. The work includes technical report, time and financial plan, project site equipment, technical regulations, inspection and test plans, implementation of technology water impermeable concrete

The diploma thesis describes design and assessment of foundation of tall building. Existing reinforced concrete slab-pile foundation structure was assessed as unsatisfactory at the ultimate limit state. Design of two new options was processed: slab-pile foundation with adjusted slab thickness and slab foundation without piles. Both options were assessed at the ultimate limit state and the serviceability limit state. Foundation options were designed as water-impermeable structure of white tank and meet requirements for this type of structures.

The master's thesis is elaborated on the basis of the project of the Sport and Health Center Olomouc. The project consists of two main buildings – the object of NH Hotel and the Sports Center Omega. The hotel also includes a conference center with three conference halls and covered parking. The object of Omega Sports Center is composed of sports halls for squash, badminton and tennis, along with changing rooms, wellness area and operational background of the object itself. The sports center also incorporates outdoor tennis courts and an underground tunnel connecting the Omega center and the NH Hotel. This thesis deals with the civil technological project of the building site and involves mainly the technical report of civil technological project, the study of realization of the main technological stages of the building object, the project of organization of construction, time schedule of aforementioned two main buildings, the technological standard with test and execution plans for the execution of underground construction by the impermeable concrete technology and for execution of variant solution of tennis hall roofing. Further, a comparison of the alternative roofing technology with current used roofing technology is performed, including the drawing documentation of new roofing alternative.