“Temporary urbanism” is a concept that can go by a number of different names and can take different forms. This means that the concept has a dynamic and experimental character, it can represent different types of uses and needs of different target groups and users. The concept originates from New York, during the 20th-century, and usually involves an urban planning strategy that promotes social sustainability by reducing the car use in cities and instead shift the focus to the citizens. Temporary urbanism can therefore act as a catalyst to change the norm and meaning of urban spaces, and who they are for. In the Swedish context, information about the concept is not available to everyone, as it is limited to existing within urban planning and is therefore primarily aimed at top-down initiated projects. If temporary urbanism is to be represented in the right way, as a flexible and versatile tool, more target groups need to be able to use the concept, in order to create their own initiatives in urban spaces. If the public space, evaluated as a resource, is not used all year round in different ways and by a variation of target groups, it would become what we call wasted space. Hence, citizens must be given access to proper tools in order to influence the development of the urban spaces and what they contain. Throughout the bachelor's thesis, desk studies have been used, supplemented with interviews and an example of the trendy concept of “summer streets”. All this to understand how temporary urbanism commonly is expressed in Sweden and what potential development the concept has in the utilization in Swedish context. This thesis has resulted in a design proposal for a handbook. The handbook summarizes and analyzes the concept of temporary urbanism and its use in the Swedish context. It also showcases international examples of how the concept could be expressed broadly and diversified to inspire. The handbook results in an understanding of how awareness can increase, create an understanding of the concept, and promote citizen participation in the design of public spaces. It clarifies the concept of temporary urbanism and makes it accessible for all, so that more people can use the strategies it includes to curate urban spaces. / “Temporär urbanism” är ett begrepp som kan gå under en rad olika benämningar och kan ta olika skepnader. Det innebär att konceptet har en dynamisk och experimentell karaktär, det kan representera olika typer av användningar samt olika målgruppers och användares behov. Konceptet har sitt ursprung i New York, under 1900-talet, och innebär oftast en stadsplaneringsstrategi som främjar social hållbarhet genom att minska bilismens starka fäste i staden för att istället skifta fokuset till medborgarna. Temporär urbanism kan därför fungera som katalysator för att förändra normen för vad urbana rum innebär och vilka de är till för. I svensk kontext är informationen om detta koncept inte tillgängligt för alla, då den begränsas till att vara ett begrepp inom stadsplaneringen och riktar sig därför främst till top-down initierade projekt. Om temporär urbanism ska representeras på rätt sätt, som ett flexibelt och mångsidigt verktyg, behöver fler målgrupper kunna använda sig av konceptet för att ta egna initiativ i urbana rum. Om stadsrummet, sedd som resurs, inte utnyttjas året om på olika sätt och av varierande målgrupper, skulle det bli vad vi kallar ett outnyttjat utrymme. Därav måste medborgare ges tillgång till goda verktyg för att få påverka utvecklingen av stadsrummen och vad de innehåller. Genom uppsatsen har skrivbordsstudier använts, kompletterat med intervjuer och ett typexempel av det trendiga konceptet “sommargator”, även kallat “sommargågator”. Detta för att förstå hur temporär urbanism oftast uttrycker sig i Sverige och därmed vad konceptet har för utvecklingspotential i tillämpningen i den svenska kontexten.  Denna uppsats har mynnat ut i ett designförslag av en handbok. Handboken sammanfattar och analyserar konceptet temporär urbanism och dess användning i svensk kontext. Den tar även upp internationella exempel på hur konceptet skulle kunna uttryckas för att inspirera och visa på bredd och mångfald. Handboken resulterar i att förstå hur medvetenheten kan öka, skapa förståelse för konceptet, främja medborgarnas deltagande i utformningen av stadens offentliga rum. Den tillgängliggör och tydliggör konceptet för temporär urbanism för att fler ska kunna använda sig av strategierna som det innefattar, för att kurera urbana rum.

<p dir="ltr">Reinforced concrete elements are vulnerable to sliding against each other when shear forces are transmitted between them. Shear-friction is the mechanism by which shear is transferred between concrete surfaces. It develops by aggregate interlock between the concrete interfaces while reinforcement crossing the shear interface or normal force due to external loads contributes to the shear resistance. Current design provisions used in the United States (ACI 318-19, AASHTO LRFD (2020), and the PCI Design Handbook (2017)) include design expression for shear-friction capacity. However, the value of the reinforcement yield strength input into the expressions is limited to a maximum of 60 ksi. Furthermore, the concrete strength is not incorporated into the primary design expressions. These limits cause the potential contribution of high-strength reinforcement and high-strength concrete in shear-friction applications from being considered. Therefore, a research program was developed to investigate the possibility of improving current shear-friction design practice and addressing these current limits.</p><p dir="ltr">Specifically, an experimental program was conducted to evaluate the influence of high-strength reinforcement and high-strength concrete on shear-friction strength. In addition, a statistical analysis was performed using a comprehensive shear-frication database comprised of past tests available in the literature. The experimental program consisted of two phases. Phase I included 24 push-off specimens to study the influence of the yield strength of the interface reinforcement (Grade 60 and Grade 100) and the number and size of interface reinforcing bars (6-No.4 and 4-No. 5 bars) with three different interface conditions (rough, smooth, and shear-key). Phase II included 20 push-off specimens with rough interfaces to investigate the influence of the yield strength of the interface reinforcement (Grade 60 and Grade 100) and concrete strength (target strengths of 4000 psi and 8000 psi). The influence of these two variables was observed over a range of reinforcement ratios (ρ = 0.55%, 0.83%, 1.11%, and 1.38%).</p><p dir="ltr">The test results showed that the overall shear-friction strength was the greatest for rough interface specimens, followed by specimens detailed with shear keys. The smooth interface specimens had the lowest strengths. The results of both phases of the experimental program indicated that the use of high-strength reinforcement did not improve shear-friction capacity.</p><p dir="ltr">Furthermore, the results from the Phase II tests showed that increasing the concrete compressive strength led to increased shear-friction capacity. The test results from the experimental program were analyzed and compared with current design provisions, which demonstrated room for improvement of current design practice.</p><p dir="ltr">Following the experimental program, a comprehensive shear-friction database was analyzed, and multilinear regression was used to create a model to predict shear-friction strength. Factors were then applied to the model to provide acceptable design expressions for shear-friction strength (less than 5% unconservative estimates). The database was used to evaluate the factored model and current design provisions.</p><p dir="ltr">The research outcomes, especially the expressions for shear-friction strength that were developed and that include consideration of the concrete compression strength, along with the shear-friction tests demonstrating the lack of strength gain with the use of Grade 100 reinforcement, provide valuable information for the concrete community to help direct efforts toward improving current shear-friction design practice.</p>

In this diploma thesis two steel frame objects of a waste dump in Úholičky are solved. The aim is to resolve the chosen parts of a construction-technological project. The main topics for selected technological phases are transportation, bill of quantities, technological regulations, construction organization’s principles, time schedule, machinery, control and testing plan, work safety and worker’s health protection. These topics are prepared for the technological phases of ground works, fundamental contruction, upper load-bearing structure, construction of the floor and sheathing of the object. The thesis has also other parts which include static solution of a prestressed unit, budget by items, calculation of the object’s maintenance cost, handbook for bulding’s occupancy and proposal of construction contract.