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Abstract: The report shows a possible way to determine a REI 90 wall. This is done by studies of fire safety theories, the u se of four different calculation methods, small scale tests of different wall types and finallya full scale ISO 834 test of a 3x3 metre large wall. suggestions of so me fairly possible REI 90 walls are al so included. ( Swedish )
As multi-storey buildings with wooden framework are being build, constructors are faced with problems like, for instance, deformation of the wood, that is barely noticeable in a smaller house, but significant in larger buildings. Largest deformations of the wood occur w hen wood with a high original moisture content is loaded perpendicular to the grain and simultaneous allo w ed to dry, for instan
This work is a Master' s Thesis in Civil Engineering. It has been performed in ca-operation between BODAB and the Depmtment of Civil Engineering at Lund Institute of Technology. The aim of my work has been to develop a computer based system for reaJ-estate information management that mainly utilises the drawings and documents produced during the design. The system developed uses drawings produ
The Slab-on-grade, which include Industrial floors, can be defined, according to ACI Committee 360,1 as a slab continuously supported by ground with an area of more than twice the area required to support the imposed loads. The slab may be plain or reinforced and may include stiffening elements such as ribs and hidden beams. The reinforcement may be provided for structural purpose or for the contr
This essay is a part of an extensive research project concerning multi-storey timber framed constructions in Sweden, initiated by Södra T im ber and the Department of Structural Engineering at Lund Institute ofTeclmology. The major part ofthe report is dealing with deformations in timber frames due to load and varying moisture content from an experimental point of view. It also includes a field-st
Målet med examensarbetet var att prova en samarbetsform mellan civilingenjörsutbildningen och arkitektutbildningen som innebär att engagera examensarbetare från V -sektionen i de arkitektstuderandes arbete i ritsalarna. Kontinuerligt under hösten har jag närvarat i ritsalarna och då arbetat med att försöka ge dem en bättre förståelse för byggnadens uppbyggnad och konstruktion. En förhoppning är at
The fatigue behavior of laminated veneer lumber (Douglas-fir) subjected to shearstress has been studied. The static shear strength of specimens, 37 by 102 by 406 mm was established through a three point bending test over a span of 305 mm. Four series of specimens were subjected to a cyclic load history with peak loads ranging from 95 to 80 percent of the static strength. The duration of each load
Acoustic emission is the response to the application of stress. Two sensors were attached to the setup to measure acoustic emission as a voltage. The beams were loaded until rupture in four point bending. Lab VIEW® continuously took readings of load, deflection, acoustic emission, date and time and saved all data on a hard drive.
The report includes a study where stress-laminated and nail-laminated wood decks are compared, with respect to deflection, static and dynamic springiness. The deck is built up of 22 pieces 45 mm wide, 170 mm high and 7000 mm long wood joists. (Swedish).
The report includes description oftwo programs that have been developed for drawing reinforcement in AutoCAD and making reinforcements reports according to Swedish Standard. (Swedish).
Development of concrete formulation reinforced by non-corrosive fibres, to realise thin sections. The mechanical properties were tested in the goal to evaluate an idea of application, which is a prefabricated sandwich-element integrating thermic isolation for external walls.
A study of shear capacity in vertically reinforced masonry beams beeing exposed to a concentrated force. The aim of the design was to get shear failure and thus get information regarding the method of reinforcing. The vertically reinforced beams were compared to a reference beam made of common bricks. The method can be used to bridge larger openings in structural masonry walls.
The purpose is to investigate different ways of stabilizing high-rise buildings in Light-gauge steel framing and enhance the understanding for which design details that restrict the possibility of designing high-rise buildings. The work emphasize the force distribution in the stabilizing structure.
The purpose of the report is to investigate different elimate influences on the mechanical behaviour of wood, both theoretical and experimental. Here hygromechanical behaviour means shrinkage, elastic strain, creep and mechano-sorption. New laboratory equipment was designed and constructed for experiments where specimen were submerged in water. For the experimentsamples of Norwegian spruce (Picea
This study describes a method for measuring and evaluating intemal stresses in wood eaused by elimate variations. The aim of this work is to give elear experimental results of the stresses build up in wood perpendicular to the grain w hen exposed to multiple humidity cyeles. These results can be used by wood researchers in order to calibrate their theoretical models which describe the material beh
The porpuse of this thesis is to evlauate the utility of GrindoSonicMK5 instrumentstudying the modulus of elasticity in Norway Spruce and the factors affectting.
This master thesis purpose is to increase the understanding of how the diaphragm walls function. The interest have mainly been focused on how much movement between the inner and outer leaf one can permit A major interest have also been focused on how much interaction between the leafs one can expect.
The effects of four parameters on the cracking of a single leaf masomy facade were studied. The four parameters were, the properties between the masomy and the ground, the ratio between length and width, different values of Y o ungs modulus and the presence of windows and doors.The analysis was carried out in the FE-program Ansys. The present work also includes an experimental study ofthe shear be
