Search for dissertations about: "roof structure"

Showing result 1 - 5 of 25 swedish dissertations containing the words roof structure.

  1. 1. Medieval Timber Roof Structures: Conceptual methods for investigation and evaluation of structural behaviour, with the horizontal thrust problem as an application

    Author : Carl Thelin; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; conservation; thrust; medieval churches; preservation; structural behaviour; base of the roof; roof truss; roof structure; horizontal support; FEM;

    Abstract : The medieval timber roof structures hidden in the attics of many Swedish churches represent the advanced building technology of the time. They are an important cultural heritage, their being bearers of information from a period regarding which other direct sources of information are scarce. READ MORE

  2. 2. The Structure of Chinese Timber Architecture Twelfth century design standards and construction principles

    Author : Qinghua Guo; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; units of measurement; design standards; timber structure; Chinese architecture; building patterns; carpentry system; construction principles; proportion; modular design;

    Abstract : This thesis examines the building standards and construction principles prescribed and used in the construction of state buildings of the Song Dynasty (960 - 1279), China, from the viewpoint of architectural design. It aims to answer three fundamental questions: (1) What measuring system was used in the carpentry design and construction? (2) What building scales and proportions were prescribed for and used in state buildings of the time? (3) What were the interrelations of the structural patterns and roof types, and what were their relationships to the building scales and proportions? The thesis begins by providing detailed explanations of the highly refined and unique Song period modular system which governed not only the sizes of each individual elements, but also the dimensions of structural grids and the proportion of entire building. READ MORE

  3. 3. Molecular recognition in the solid state : crystal structure studies of selected inclusion compounds of host molecules with roof-shaped skeleton

    Author : Olga Helmle; Janusz Lipkowski; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Abstract : This survey presents the results of single-crystal X-ray diffraction investigations of nine selected organic heteromolecular complexes in terms of the molecular recognition concept. The host molecules of the studied inclusion compounds have the 9,10-dihydro-9,10-ethanoanthracene moiety in common, to which various sensor groups possessing both proton donor and acceptor abilities are attached. READ MORE

  4. 4. Probabilistic System Effects in Timber Structures

    Author : Martin Hansson; Avdelningen för Konstruktionsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggnadsteknik; Building construction; Anläggningsteknik; Construction technology; first order reliability method; Monte Carlo simulation; system effect; sheathed parallel member system; structural timber; roof truss;

    Abstract : The main purpose of the performed research presented in this thesis is to increase the understanding of the effect of variability of strength properties on the reliability of timber structural systems. Compared to other structural materials such as steel and concrete, structural timber has a considerably higher variability of strength both within and between members. READ MORE

  5. 5. Mitigation of urban storm water runoff through application of computational fluid dynamics

    Author : Kaj Pettersson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microstructure; infiltration; Green roof; CFD; wind-driven rain; building facade.; lattice Boltzmann;

    Abstract : This thesis covers computational methods for improving the ability of green roofs to mitigate storm water runoff in urban environments. Roofs with living vegetation, known as green roofs, have been used for this purpose however quantification of their ability to slow and stop rainfall runoff has not been undertaken to a large degree. READ MORE