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An engineered wood joist, more commonly known as an I-joist, is a product designed to eliminate problems that occur with conventional wood joists. Invented in 1969, the I-joist is an engineered wood product that has great strength in relation to its size and weight. The biggest notable difference from dimensional lumber is that the I-joist ...
I-beam. An I-beam used to support the first floor of a house. An I-beam is any of various structural members with an I - (serif capital letter 'I') or H-shaped cross-section. Technical terms for similar items include H-beam, I-profile, universal column (UC), w-beam (for "wide flange"), universal beam (UB), rolled steel joist (RSJ), or double-T ...
Steel joists and Joist Girders being erected. In structural engineering, the open web steel joist (OWSJ) is a lightweight steel truss consisting, in the standard form, of parallel chords and a triangulated web system, proportioned to span between bearing points. The main function of an OWSJ is to provide direct support for roof or floor deck ...
An I-joist consists of top and bottom flanges of various widths united with webs of various depths. The flanges resist common bending stresses, and the web provides shear performance. [15] I-joists are designed to carry heavy loads over long distances while using less lumber than a dimensional solid wood joist of a size necessary to do the same ...
Joist. A single floor or simple set of joists. If the joists land directly above the studs they are stacked. A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. When incorporated into a floor framing system, joists serve to provide stiffness ...
Open web trussed joists and rafters are often formed of 4 cm by 9 cm (two-by-four) wood members to provide support for floors, roofing systems and ceiling finishes. Platform framing was traditionally limited to four floors but some jurisdictions have modified their building codes to allow up to six floors with added fire protection. [32]
Metal deck and open web steel joist receiving spray fireproofing plaster, made of polystyrene-leavened gypsum. Steel loses strength when heated sufficiently. The critical temperature of a steel member is the temperature at which it cannot safely support its load [citation needed]. Building codes and structural engineering standard practice ...
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