This makes steel frame construction far stronger and more durable than traditional wood framed alternatives. 7) Improved Construction Quality A steel frame building does not age and worsen like wooden structures manage over time, so as a homeowner you don’t have to concern about any feeble spots. Steel is corrosion resistant, it is dimensionally steady and it furthermore continues directly, no anxieties about distorting with climate changes. 8) Interior Partition Walls Steel studs are a good choice for interior partition walls, where the conductivity of steel doesn't matter. In other words: steel framing (for interior walls) can combine with wood-frame or other building system.
A life cycle assessment is an analysis of a product for it’s environmental impact. The “life cycle” of a product is every phase a product goes through, from the time it is taken out of the Earth to the time it is returned to the Earth. The assessment generally consists of four stages: defining the scope, an inventory analysis, an impact assessment and the interpretation of the results of the other stages. Life Cycle Assessments are becoming more common because of the growing concern for environmentally friendly products. Life cycle assessments are used for their depth of analysis into the different phases of a product, providing a more complete picture to the environmental impact.
In the case of round wood (logs), the logs are cut to a manageable size and then disappeared. Pulp mills joined the awkward spaces, acceptable to the timber wood is removed at this stage. These spaces, the remaining scrap wood or lumber processing is returned to the chipping process; in-house hulking wrecks can be a major source of wood tiloja.Lahden these logs are not suitable for timber are generally removed by mechanical means (drum peeled), in order to avoid the infection of pulping technology operations32. Depending on the moisture content of the bark, it can then be burned for energy production. If not burned for energy production, the cover can be used as cover, ground cover, or to make charcoal.
It comprises of tree felling, de-branching, cross-cutting, skidding, loading and primary transportation. It is also the process of cutting and processing trees to produce timber and pulp to supply the world’s markets for furniture, construction, paper, and other products (Asner et al., 2005). Logging activities range from large-scale commercial timber plantations to individuals harvesting fuel wood. Logging can be categorized into two; Selective logging; According to silvicultural term, selective logging is the most common intervention in tropical forests that are managed for timber production (Gunter et al., 2011).It is the extraction or cutting of individual trees from a forest and also leaving a variable proportion of trees and vegetation standing which contradicts clear cutting method (Putz et al., 2000; Asner et al., 2005). Clear-cutting/felling: This is a logging practice in which most or all the trees in the area are cut down.
2.1 LCA model Life cycle assessment (LCA) is an effective tool for quantifying the environmental burden of products, processes or services during their life cycle from cradle to grave (ISO, 2006). Various LCA studies have been conducted in the energy and environment fields. LCA approaches can be divided into three: process-based LCA, IO LCA, and hybrid LCA. The process-based LCA requires information on energy, material, and resource inputs and environmental outputs for each stage in the product life cycle. The process-based approach was defined in the ISO 14040 framework, the general steps include goal and scope definition, inventory analysis, impact assessment, and interpretation (ISO, 2006).
Lumber felling has been an important yet controversial topic that has caught the eye of both environmentalists and economists. Moreover, this has created several techniques and practices used today in forestry. These practices include clear cutting, selective cutting, and strip cutting. Selective cutting or also known as selective felling is the cutting down of selected trees in a forest so that growth of other trees is not affected. Usually this done accordingly to a specific criteria including minimum tree size for harvesting, specifications of the number, spacing and size classes of residual trees per area, and allowable cut (Selective Cutting) .
Plastic and metal fabrications are used in this manufacturing process and to get a final shape and desired design, there are some methods to follow. Fabrication processes comprise; cutting, forming, machining and welding. We can discuss the advantages and disadvantages of plastic fabrication. Advantages and Disadvantage: Though the results of this process (plastic fabrication) greatly rely on the exceptional uniqueness of the type of plastic used (nylon, acrylic, Plexiglas, etc. ), the process itself has numerous advantages and disadvantages, which are given below: Advantages Disadvantages Reduced Finishing: Unlike most metals, plastics can be colored before fabrication; Finding the need for certain post-effective processes, such as
Comparative sentences are those in which the writers compare the product being reviewed with some other product. Comparative sentences are resolved by this system. Reviews with comparative sentences can be dealt with using the Named Entity Recognition (NER) method. Using this method we can assign the sentiment of the user towards this product to be the same as the sentiment towards that product. This will thus improve the accuracy of the aspect mining system as more opinions and their corresponding aspects will be considered.
Background of the Study Throughout the world, the products which are extensively used are iron and steel products. These are because iron is one of the strongest and cheapest metals, because of its strength and cheapness it is commonly used in manufacturing tools, mechanical equipment and also building parts. Because of this iron and steel has been a great prominence in the industry thus prevention of rust and removing of rust is the basis of the technological advancement we have today. Some of these advancements that inhibit rust formation are the application of coating and paint, galvanization, rust resistant alloys, bluing and even cathodic protection. Rust has been a part of our lives ever since, and eventually iron materials will corrode