The purpose of this master thesis has been to study prestressed concrete in different bridge codes. The studied codes are the Swedish BRO 94, the American AASHTO code and Eurocode. The codes are compared by dimensioning of a bridge slab in transverse direction and the factors that decide the amount of prestressing steel are evaluated.

This Masters thesis examines the possibilities of using structural masonry in modern building with respect to statical load bearing capacity, building physics, building costs and acoustics. The examination is done by designing three buildings using an existing building as a model. These buildings are then compared to each other and to the existing building with respect to the areas of interest men

This report will examine the reliability of calculation methods used for concrete structures in the serviceability limit state. A comparison between the different methods will be done, based on calculations of the reliability index for these methods. This comparison will be the base for a discussion about what norm that should be prefferd in different situations and what level of reliability the c

This thesis is supposed to form the basis for a future productian of a two-storey wooden house called "Villa Nöbbele". The house is designed for construction on si te. An estimation of cost of "Villa Nöbbele" has been made and to get an object for comparison regarding the construction procedure, bu t above all regarding the price, a house of the Modulent collection has been stu

The objective of this study is to describe the main problem areas in the current stability design of multi-storey timber frame buildings, to identify lacks in current design principles and to recommend in which areas the future development of design principles and guidelines should be focused in order to facilitate the design work and make stabilising systems more effective.

This report contains a study of early deflections and crackingloads in precast prestressed hollow core slabs and the parameters affecting these. The objective of the report is, by conducting measurements of the modulus of elasticity and split-tension on the concrete, to compute the deflection and crackingloads for two types of hollow core slabs manufactured by the company Starka. The analysis is

A model for calculating crack widths in mesh reinforced shell structures with arbitrary directions of the reinforcement. The model is compiled into a spreadsheet for practical use. Comarative examples are made between new and traditional methods.

This report contains a study of thermal effects in concrete bridges. The purpose is to investigate the relevance of the temperature actions prescribed in the Swedish bridge standard, BRO 2002, for concrete bridges. The analyses are performed for a bridge cross-section model, exposed to climatic effects described by climate data for several Swedish locations. The program HEAT 2 was used to calculat

In this master’s thesis automatic generation of reinforcement distribution in the structural engineering program FEM-Design Plate was investigated. The reinforcement distribution proposed was to be as accurate as possible, both from a theoretical and a practical point of view. For this purpose, calculation routines considering current national codes and engineering practice have been developed. Th

In this master thesis, the properties of shell bedded autoclaved aerated concrete (AAC) are investigated. There are reasons to believe that the values for flexural, compressive and shear strength in the Swedish regulations are on the low side. The work within this master thesis consists of determining the characteristic values based on experimental tests. The test results indicate that the values

Modulenthus bygger småhus enligt principen volymhus, det vill säga att så mycket som möjligt färdigställs på fabrik så att huset kan levereras direkt till byggplatsen som ett antal volymer med golv, väggar och tak. Husen ställs på en krypgrund, en typ av grund som alltid blivit kraftigt ifrågasatt och på senare år uppmärksammad i media på grund av den stora andelen fuktskadade grunder. För att lig

Modulenthus bygger sina hus enligt volymprincipen, vilket innebär att de olika elementen till stommen byggs på olika linjer inne i en husfabrik. Dessa element sammanfogas sedan till större volymer. När volymerna står färdiga kan fönster och dörrar börja monteras och det invändiga arbetet såsom kakling av badrum och iordningställande av kök påbörjas. De inplastade volymerna transporteras sedan ut t

Sustainable Bridges is an EU-project. The objective of the project is to demonstrate that it is possible to enhance the load capacity of a bridge with refined analytical methods. This thesis will be a small part of the project. My objective in this thesis is to examine the dynamic loads generated in a bridge when trafficked. Since there are uncertainties concerning the dynamic effect this variable

This Masters Thesis’ purpose is to evaluate a number of methods used for dimensioning in order to avoid unwanted sway and vibrations in a light weight steel floor structure. The design methods studied in this report are done by Ohlsson, Hu, Onysko, Talja and ISO (no calculations or measurments are made for ISO). The study shows that there is no big difference in the longest span allowed by the stu

In the period between 1940s and 1970s the widespread practice in Sweden was to use non-stainless steel reinforcement in masonry walls. In many cases cracks started to appear in joints above openings in these walls because of corrosion of the reinforcement. The largest problem is that the appearance of damaged buildings deteriorates and there is a risk of bricks falling down and rain water penetrat

This Master’s Thesis investigates whether expansion joints should be placed between fields of ceramic tiles, which are recommended by distributors today. This thesis concludes that expansion joints do not relieve in-plane stresses in ceramic tile coverings attached with the thin-set method. As shear stresses in the adhesive layer in the vicinity of expansion joints can reach critical levels, using

When designing concrete structures, there are great demands made on quality and service life of the construction, and for this the size of concrete cover is crucial. The concrete cover protects the reinforcement bars from carburization and from infiltration of chlorides, which make them corrode. When using today’s codes while designing, a thick concrete cover will yield a large crack width, which

Analysis and design of a frame can be done in two principally different ways. The first method, calculation according to first order elastic theory, is based on buckling lengthsand interaction relations. The advantage with this method is its simplicity. The difficulty lies in the determination of buckling lengths. The second method, calculation according to second order elastic theory, results in

This report shows how an non-insulated sheet metal roof behaves when it is exposed to varying temperatures. What happens is that the sheet metal expands and contracts which can lead to damages in the sheet metal fasteners. This causes problems when the roof is ment to stabilize for horisontal forces on the building. This report focuses on a specific construction type that is the most commun in the