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TEMPERATURE MOISTURE PROCESS STUDY IN MODERN WOOD STRUCTURES
Dohnal, Jakub ; Hradil, Petr (referee) ; Straka,, Bohumil (referee) ; Pěnčík, Jan (advisor)
In building structures wood is very often used as construction material and can also be used for supplemental non-supporting structures, e.g. as wood panelling, screening elements, etc. The most common woody plant species that can found in the biotope of the Czech Republic are Norway spruce (Picea abies L.) and Scots pine (Pinus sylvestris L.). Wood as construction material is popular in architect comunity as well as this material like also investors, who prefer living in healthy and natural environments. Wooden structures are also popular with structural engineers for their good mechanical properties and low weight, which, however, depends on moisture. Wood properties vary in every natural way and need to be taken into account at the beginning of the designing process. This dissertation aims to contribute to the description of mechanical characteristics of wood during changes of moisture content in the wood structure. Various experimental tests and numerical modelling were used in the thesis in order to reach the aims. The experimental tests examined mechanical properties at different sample moisture of selected woody plant species. Subsequently, the obtained values were compared with values available in specialist and scientific literature, so that these values could subsequently be used as input values for numeric calculations. The conclusions of the dissertation will contribute to more accurate calculations and further analysis.
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Kindergarten in Jihlava
Vystrčil, Jan ; Straka,, Bohumil (referee) ; Šuhajda, Karel (advisor)
In diploma thesis is elaborated project documentation for the construction of an building of kindergarten. The building is situated in peryphery of Jihlava city. The building is two-storey kindergarten building with a basement. There aure two classes for children 3 - 6 years old in the building. In diploma thesis is elaborated architect-building solutions, building – construction solutions, fire safety solutions and physics qualities of constructions.
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Office building with furniture production
Neuner, Jakub ; Straka,, Bohumil (referee) ; Šuhajda, Karel (advisor)
The aim of this master thesis is to design a building consisting of joiner workshop and administration part of furniture factory. Building is located in Brno, cadastral area Horní Herpšice. In terms of funcion as well as structure is building devided in two parts, joiner workshop and administration part containing hygienic facilities for workers, canteen for employees and furniture showroom. Joiner workshop is single-deck skelet structure made of glued laminated timber. Administration part has two above-grade floors. Cross laminated timber panels are used for vertical and horizontal bearing structures. Building facade is designed as ventilated, partly made of cement fiber boards, partly of timber boarding along with green panels. The building has one-layer green roof.
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The Roof Structure of a Multipurpose Sport Building
Málek, Leoš ; Straka, Bohumil (referee) ; Buchta, Stanislav (advisor)
This thesis deals with design of roof structure of multipurpose sports hall located in the city of Blansko. The goal is to use timber and natural resources as much as possible. Emphasis is placed on the maximal prefabrication at the site of production and the speed of assembly at the site of construction. Span of the structure is 40,035 m, length 59,75 m and height 17,525 m. The structure is designed as a three-hinged truss made from the glue laminated timber. The structural model was created by software RFEM of the Dlubal company.
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The structure of mountain hotel in Beskydy
Danelová, Veronika ; Straka,, Bohumil (referee) ; Šmak, Milan (advisor)
The diploma thesis presents design and assessment of a loadbearing timber structure of mountain hotel in the Trojmezi u Hrčavy area. The object is a two-storey building without cellar and with attic rooms. The object has a floor plan of an incomplete octagon with a roofless central courtyard. The structure spans 36 meters at its widest dimension and the maximum height reaches almost 12 meters. The individual segments are covered by mono-pitched roof with 27° slope. The main loadbearing elements are constructed of glued laminated timber and solid timber with steel joints and gypsum fibreboard cladding. The loadbearing structure is designed and assessed in accordance with relevant standards, taking ultimate and serviceability limit state into consideration. The thesis includes an engineering report including bill of quantities, structural design report and drawings of loadbearing structure, anchorage and selected details.
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Railway Bridge
Jirkovská, Eva ; Straka,, Bohumil (referee) ; Buchta, Stanislav (advisor)
The thesis deals with design and static assessment of the steel railway bridge with a span 36,6 m. The bridge is located on the two-track corridor line Košice - Púchov. It consists of two bridge structures connected by a longitudinal expansion joint. The main construction consists of four solid welded beams mounted on steel calotte bearings. The bridge deck is the top with a tub for the track bed, which is continuous at the site of the bridge. Bridging the bridge is secured by a track bed and a horizontal and lateral truss bracing. On both sides of the bridge are pedestrian walkways with a width of 1,5 m.
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The Forest Viewtower in Beskydy
Kamrádová, Michaela ; Straka,, Bohumil (referee) ; Šmak, Milan (advisor)
Topic of this Master's Thesis is a design and a statical evalution of a load bearing structure of an observation tower in Beskydy mountains. Ground plan of this structure is in a shape of a nonagon with a non-roofed interior space. Height of the observation tower is 38,5 m, the shape of a ground plan doesn't change with a radius of a circumscribed circle of 12 m. The structure is designed from glued laminated timber, solid wood and steel. Columns bear horizontal beams and their stiffness is ensured by horizontal and inclined reinforcing beams. Main load bearing columns, upper and lower beams are designed from glued laminated timber GL24h. Upper beams and beams of a gallery are designed from glued laminated timber GL36h. Horizontal stiffener is designed from solid wood C24. Central column, inclined beams, stairway, water slide cantilevers, rod and central rod are designed from steel of a strength class S235. Cantilever for gallery is designed from steel of a strength class S355. Connections are designed from steel elements. Statical evaluation, technical report and construction drawing are included
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The multipurpose building in Plzeň
Perhalová, Anna ; Straka,, Bohumil (referee) ; Šmak, Milan (advisor)
The subject of this diploma thesis is design and static assessment of timber load bearing structure of multipurpose building in Plzeň. It is cupola consited of two radial curved ribs above a triangle ground plan with one oval edge. I got this shape by cutting the cupola vertically on these two triangle edges and that created two walls of the construction. The largest ground plan dimension of load bearing structure is 54,4 meters and the maximum height is +18,0 meters. The design is processed in two various drafts.
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The Roof Structure of a Multipurpose Sport Building
Kaczová, Silvia ; Straka, Bohumil (referee) ; Buchta, Stanislav (advisor)
The subject of my diploma thesis is to design and assess a multipurpose sports hall in the area of Brno-Bystrc. The shape of the hall is rectangular with dimensions 45 m × 48 m. The roof is designed from an arched truss. The height of the construction is 18 m. Part of the thesis is a technical report which contains details of construction, list of used materials, production and maintenance method. The work also includes the static calculation of supporting elements and joints and the graphical documentation. The valid CSN EN technical standards were used for the design and assessment.
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