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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Experimental and Analytical Methodologies for Predicting Peak Loads on Building Envelopes and Roofing Systems

Asghari Mooneghi, Maryam 09 December 2014 (has links)
The performance of building envelopes and roofing systems significantly depends on accurate knowledge of wind loads and the response of envelope components under realistic wind conditions. Wind tunnel testing is a well-established practice to determine wind loads on structures. For small structures much larger model scales are needed than for large structures, to maintain modeling accuracy and minimize Reynolds number effects. In these circumstances the ability to obtain a large enough turbulence integral scale is usually compromised by the limited dimensions of the wind tunnel meaning that it is not possible to simulate the low frequency end of the turbulence spectrum. Such flows are called flows with Partial Turbulence Simulation. In this dissertation, the test procedure and scaling requirements for tests in partial turbulence simulation are discussed. A theoretical method is proposed for including the effects of low-frequency turbulences in the post-test analysis. In this theory the turbulence spectrum is divided into two distinct statistical processes, one at high frequencies which can be simulated in the wind tunnel, and one at low frequencies which can be treated in a quasi-steady manner. The joint probability of load resulting from the two processes is derived from which full-scale equivalent peak pressure coefficients can be obtained. The efficacy of the method is proved by comparing predicted data derived from tests on large-scale models of the Silsoe Cube and Texas-Tech University buildings in Wall of Wind facility at Florida International University with the available full-scale data. For multi-layer building envelopes such as rain-screen walls, roof pavers, and vented energy efficient walls not only peak wind loads but also their spatial gradients are important. Wind permeable roof claddings like roof pavers are not well dealt with in many existing building codes and standards. Large-scale experiments were carried out to investigate the wind loading on concrete pavers including wind blow-off tests and pressure measurements. Simplified guidelines were developed for design of loose-laid roof pavers against wind uplift. The guidelines are formatted so that use can be made of the existing information in codes and standards such as ASCE 7-10 on pressure coefficients on components and cladding.
32

Bydlení v soudobém městě - architektonicko urbanistická studie využití Kohnovy cihelny v Brně / Living in a city of nowadays - architectural and urban redevelopment of Kohn's brickyard in Brno

Vašáková, Dagmar January 2012 (has links)
Interest about living in the city is increasing and people look suitable sites for newconstruction. Boundary of these good places expand into the landscape. Undeveloped areas have become valuable goods and it is important to build up the appropriate form of building with critical density, which will provide new space for living, but also contribute to raising living standards and it elevate all surrounding area. Variable and flexible solution of my architectural and urban design fights with evacuation people into urban sprawl and try put there quality housing to the city center and try to be a timeless concept,which will be able to respond to different human rights requirements and wishes. The built up area will be created by grouping the proposed houses and residential houses into blocks. Individual detached houses are designed in a range of four sizes for satisfy of people who require small houses and for people which findmore comfortable living. Different sizes of houses could satisfy both seniors and young couples and families with children and the solution ensure local settlement by people of all ages and this creates a healthy demographers structure for place.
33

Revitalizace víceúčelového objektu obce / Revitalization of a multi-purpose building in the village

Federla, Jakub January 2022 (has links)
The aim of master‘s thesis is to renovate old agricultural building and design it as nzeb building. The thesis contains three parts: 1st – design of the building, 2nd – design of building services, and 3rd – assessment of the impact of different operations in building on energy consumption. The results are then evaluated for economic and environmental savings. The renovated building in village Rozkoš will be used for many purposes. It will be divided into 3 parts – a multifunctional hall, a pub, and a club room. Multifunctional hall will be used for various activities for village itself or public. In the pub will be only cold kitchen with small dishes and beverages. Club room can be used for elderly people, workout or young people. The building is low rise and structural system is combined. The vertical load-bearing walls and columns are built of bricks. Horizontal load-bearing structures are cross vaults made also of bricks. Saddle roof is made of timber roof truss. The building site contains also an outdoor car park and a garden. The project was carried out in the Revit.

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