While cladding compatibility, thermal performance or the hygrothermal characteristics of a wall system are very important, such aspects are not the focus of this study and will not be discussed. The load-bearing wall systems are the primary components of the building enclosure, and the structural properties of the wall system are only one of many considerations that must be taken into account. The scope is limited to the structural design and performance of one single-family residential dwelling. The result of specifying and detailing typical structural elements of the home will be specified and details provided. The load path will be discussed as well as specific design codes relating to wood-framed structures. ![]() ![]() Provide introductory material such as the description of the home to be designed, applicable design codes, and external loading assessment for residential structures.ĭesign the home using a wood-framed platform system. ![]() The following major aspects are discussed in this chapter: The International Residential Code (IRC) is the design basis used by most authorities to regulate the design and construction of single-family residences. The typical US design methodology and basis will be used to accomplish the designs. In this chapter, the complete process of designing a typical US residential dwelling using wood-frame systems will be illustrated. Wood structural materials are preferred by US homebuilders largely because (1) the US home building industry is mostly familiar with wood framing method, (2) the units of construction (i.e., studs, joists, panels, etc.) are small and easily transportable, and (3) wood-framed structures can be erected without the need for specialized tools or large equipment. Structural assemblies such as the roof, floors, and walls are generally constructed with nominal 50.8 mm (2 inch) lumber members ranging in nominal depths from 101.6 to 304.8 mm (4–12 inches) and sheathed with structural wood panels for stability and security, such as oriented strand board (OSB) or plywood. The prevailing system used for the construction of single-family homes in the USA is platform framing using light wooden dimensional lumber. The main structural assemblies are described and subsequently designed using a combination of prescriptive guidance and engineering design. In this chapter, the design of a typical light-framed home is discussed. Engineers typically become involved with design items such as foundation design, steel framing design, or engineered product specification. An owner may choose to involve the engineer to improve quality or economy of the home design. A structural engineer can assist, if needed, with design items not within the scope of the building code or if alternative design approaches are required. Design of light-framed single-family homes is typically conducted by an architect or construction contractor using prescriptive building codes. The unit pieces of dimensional lumber are light and easily handled once on the work site. Dimensional wood lumber is readily available and due to its convenient unit dimension can be packaged neatly and transported to work sites by either commercial transport or personal vehicle. ![]() Light-wood framing construction techniques have been traditionally used in America for the construction of single-family residences.
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