Sökning: "Door openings"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Door openings.

  1. 1. FRCM-Composites for Strengthening Concrete Walls with Openings : Experimental and Numerical Analysis

    Författare :Cristian Sabau; Björn Täljsten; Thomas Blanksvärd; Gabriel Sas; Cosmin Popescu; Thanasis C. Triantafillou; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; FRCM; reinforced concrete; walls; openings; strenghtening; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : Upgrading existing buildings to new functional requirements may require new openings that can weaken the structure, prompting the need for strengthening. In such cases, traditional strengthening solutions, such as creating a reinforced concrete or steel frame around the opening, imply long-term restrictions in the use of the structure. LÄS MER

  3. 2. Some Aspects on Contamination Control in Hospitals- Observations and Measurements

    Författare :Catinka Ullmann; Chalmers tekniska högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Source strength; Tissue and cells establishments; Ultraclean air operating rooms; Microbial cleanliness; Autoclaves; Contamination control; Door openings; Airborne contamination risks;

    Sammanfattning : Measurements of the cleanliness level have been performed in operating rooms classified as tissue and cells establishments for bone tissue to compare the results with the requirements given in the Tissue and Cells Directives of the European Union (EUTCD). The results show that the requirements are not always fulfilled. LÄS MER

  4. 3. FRP strengthening of concrete walls with openings

    Författare :Cosmin Popescu; Joaquim António Oliviera de Barros; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : The thesis deals with the axial strength of axially and eccentrically loaded concrete walls with cut-out openings strengthened by fiber-reinforced polymers (FRPs).Background: Functional modifications of concrete structures are common because existing structures must often be adapted to comply with current living standards. LÄS MER

  5. 4. CFRP Strengthening of Cut-Out Openings in Concrete Walls – Analysis and Laboratory Tests

    Författare :Cosmin Popescu; Björn Täljsten; Gabriel Sas; Thomas Blanksvärd; Stijn Matthys; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : Redesigning buildings to improve their space efficiency and allow changes in use is often essential during their service lives to comply with shifts in living standards and functional demands.This may require the introduction of new openings in elements such as beams, walls, and slabs,which inevitably reduces their structural performance and hence requires repair or strengthening. LÄS MER

  7. 5. Natural Ventilation and Air Infiltration in Large Single‑Zone Buildings : Measurements and Modelling with Reference to Historical Churches

    Författare :Abolfazl Hayati; Magnus Mattsson; Mats Sandberg; Jens Fransson; Guilherme Carrilho da Graça; Högskolan i Gävle; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Natural ventilation; Airing; Air infiltration; Single-sided ventilation; Cross flow; Large single zones; Historical Churches; Model evaluation optimization; Field measurements; Wind tunnel; Indoor climate and Energy simulation; IDA-ICE; Tracer gas technique; Pressurization test.; Naturlig ventilation; Vädring; Luftinfiltration; Ensidig ventilation; Tvärdrag; Höga en-zonsbyggnader; Kulturhistoriska kyrkor; Modellutvärdering optimering; Fältmätningar; Vindtunnel; Inomhusklimat och energisimulering; IDA-ICE; Spårgas teknik; Trycksättningstest.; Hållbar stadsutveckling; Sustainable Urban Development;

    Sammanfattning : Natural ventilation is the dominating ventilation process in ancient buildings like churches, and also in most domestic buildings in Sweden and in the rest of the world. These buildings are naturally ventilated via air infiltration and airing. LÄS MER