In this research, the structural behavior of timber and concrete sleepers in a standard railway turnout is evaluated, in the case of raising speed. In approaching this evaluation, current practices in the structural analysis of sleepers are surveyed and then, the sensitivity analysis with ABAQUS software is made based on selected criteria (bending and shear stresses as well as contact pressure)...

Eucalyptus obliqua, the most widespread timber tree in Tasmania, is a pioneer after fire which can eliminate the organic layer of forest soil, exposing the underlying mineral soil. We compared seedling growth, mycorrhiza formation, and mineral nutrient limitation in organic layer vs. mineral soil. We grew E. obliqua seedlings separately in pots of organic layer and mineral soil in a glasshouse....

This study illustrates how remotely-sensed data and GIS can be utilized to allow planners to evaluate the relationship between land use, environmental protection policies, and resource availability. The case study examines St. Tammany Parish in Louisiana which has experienced tremendous population growth and land use change in the past two decades. To date, work has been completed on developing...

Abstract The use of mass timber in buildings instead non‐combustible materials has benefits sustainability, aesthetics, construction times, and costs. However, the uptake modern for medium high‐rise is currently hindered by uncertainty regarding safety structural performance fire. We attribute this to a lack data. Insufficient understanding means that building designs beyond current range exper...

Improper forest harvesting can potentially degrade forest ecosystem functions and services. Human-assisted regeneration (e.g., planting) is often used to increase the rate of forest recovery and thereby reduce regeneration failure. Seed dispersal is a fundamental ecological process that can also influence spatio-temporal patterns of forest regeneration. In this study, we investigated the relati...

Economic costs associated with the invasion of nonnative species are of global concern. We estimated expected costs of Chinese tallow (Triadica sebifera (L.) Small) invasions related to timber production in southern U.S. forestlands under different management strategies. Expected costs were confined to the value of timber production losses plus costs for search and control. We simulated managem...

The design demands of timber construction used in transportation structures, such as bridges, require extended durability and reliability. As such, preservative-treated timber, rather than naturally durable timber, is most often required by code. Design demands also require minimal strength loss during treatment or during the service life of the structure. This report critiques the literature o...

This paper reports on research set in the Tasmanian timber industry that aimed to increase the competitiveness of the industry by identifying options for the adoption of electronic commerce. As part of the investigation the information flows that took place within the industry were mapped. An interpretivist epistemology was used for the study, which adopted qualitative methods and a case study ...

Alaska's forest resource and its competitive position in the international timber market have important implications for a variety of market strategies and future research objectives. While the timber industry is limited by numerous infrastructure and economy of scale factors, the state does possess high quality raw materials. In order to evaluate future opportunities it is important to fully a...

What Won’t Get Harvested, Where and When: The Effects Of Increased Paper Recycling On Timber Harvest Peter J. Ince, Ph.D. USDA Forest Service Pulp and paper production and paper recycling have increased in recent decades to unprecedented levels throughout the world. This paper presents a review and comparison of regional trends in timber harvest, pulp and paper production, waste paper recovery ...