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A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology. HSS members can be circular, square, or rectangular sections, although other shapes such as elliptical are also available.
By reducing the weight of the slab without compromising its structural strength, it is possible to create a thicker slab to support more weight over a longer span. Hollow-core slabs, also known as voided slabs, initially appeared as one-way elements in Europe during the 1950s, and are still commonly manufactured in precast form for applications ...
However, the length is limited to about 7-8 meters. Especially in Belgium, this method is widely used in private housing. To meet modern standards (both hollow-core and massive slab) of soundproofing the floor needs to be covered with a soft floor covering that is able to dampen the sound of footsteps or a floating floor screed should be ...
The SI derived unit for sectional density is kilograms per square meter (kg/m 2). The general formula with units then becomes: / = where: SD kg/m 2 is the sectional density in kilograms per square meters; m kg is the weight of the object in kilograms
In the case of steel products such as sections, bolts and fabricated steelwork the CE Marking demonstrates that the product complies with the relevant harmonized standard. [7] For steel structures the main harmonized standards are: Steel sections and plate – EN 10025-1; Hollow sections – EN 10219-1 and EN 10210-1; Pre-loadable bolts – EN ...
In the United Kingdom, these steel sections are commonly specified with a code consisting of the major dimension, usually the depth, -x-the minor dimension-x-the mass per metre-ending with the section type, all measurements being metric. Therefore, a 152x152x23UC would be a column section (UC = universal column) of approximately 152 mm (6.0 in ...
The weight of a rail per length is an important factor in determining rail strength and hence axleloads and speeds. Weights are measured in pounds per yard (imperial units in Canada, the United Kingdom and United States) and kilograms per metre in mainland Europe and Australia). 1 kg/m = 2.0159 lb/yd.
A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases , slurries, powders and masses of small solids. It can also be used for structural applications; a hollow pipe is far stiffer per unit weight than the solid members.