Essays about: "timber"

Showing result 1 - 5 of 663 essays containing the word timber.

  1. 1. Strength of axially loaded screw joints in wooden structures exposed to fire : An overview of existing knowledge and proposal for test method

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Emma Wiklund; [2021]
    Keywords : Fire; Wood; Screws; Strength; test method;

    Abstract : Today, distinct approaches are required when designing timber structures and their joints in the event of fire. Considering that the steel fasteners have temperature dependent properties and that the surrounding wooden construction is also affected by the fire due to occurrence of charring during fire exposure, these types of joints are complicated to design. READ MORE

  2. 2. Statistical analysis of firefighting and damage caused by fire in mid-rise timber-framed residential buildings compared to other construction types

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Thomas Berg; [2021]
    Keywords : Statistical analysis; timber-framed; residential; firefighting; damage caused by fire; PRONTO; NFID; linear regression; summary statistics; Technology and Engineering;

    Abstract : The contribution of greenhouse gas emissions in the production of construction materials has sparked a new interest and recent changes in building regulations regarding the use of renewables like wood as the main component in load-bearing elements. Recent regulation changes focus on allowing taller timber structures which bides the question of how to adequately maintain an acceptable level of fire protection considering the characteristically flammable properties of wood-based products. READ MORE

  3. 3. Biodiversity and habitat conditions in reaches with high flow velocity along gradients in hydrological and geomorphological alteration : A study of six rivers in Sweden

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Anders Aalto; [2021]
    Keywords : Hydrology; Geomorphology; Biological variables; Human alteration;

    Abstract : The vast majority of rivers in the developed world are affected by human alteration, which in turn negatively affects the species that rely on these highly diverse and species rich areas to survive. Homogenization of previously heterogenic areas due to a change in water discharge and the substrate availability in the rivers is often regarded as the main reason for the loss of species richness in rivers and the riparian zone. READ MORE

  4. 4. Improving Biometric Log Detection with Partitioning and Filtering of the Search Space

    University essay from Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

    Author : Nijat Rajabli; [2021]
    Keywords : tree log tracking; tree log identification; cross-section segmentation; search space reduction; transfer learning;

    Abstract : Tracking of tree logs from a harvesting site to its processing site is a legal requirement for timber-based industries for social and economic reasons. Biometric tree log detection systems use images of the tree logs to track the logs by checking whether a given log image matches any of the logs registered in the system. READ MORE

  5. 5. Aspects of erosion of restored trout spawning beds in two streams in Northern Sweden

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Frida Michelle Granlund; [2021]
    Keywords : in-stream restoration; reproductive habitat; salmonids; passive integrated transponders tags PIT-tags ;

    Abstract : Many rivers and streams in northern Sweden have been channelized due to timber floating. This has severely degraded the spawning habitats for salmon and trout, and therefore a common action when restoring channelized rivers is to establish new spawning beds by adding gravel to the streambed. READ MORE