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The panes are often more firmly attached than normal window panes, including using screws or bolts through the edges of larger panes. Concrete anchor screws are used to secure windows to the concrete structure surrounding them. Wood has a relatively high degree of flexibility, which can be beneficial under certain building stresses.
Canopy over a doorway in Fergana, Uzbekistan Canopied entrance to the New York City Subway at the 14th Street–Union Square station. A canopy is a type of overhead roof or else a structure over which a fabric or metal covering is attached, able to provide shade or shelter from weather conditions such as sun, hail, snow and rain. [1]
Single helix earth anchors Guyed mast anchor. An earth anchor is a device designed to support structures, most commonly used in geotechnical and construction applications. Also known as a ground anchor, percussion driven earth anchor or mechanical anchor, it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.
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Awnings were first used by the ancient Egyptian and Syrian civilizations. They are described as "woven mats" that shaded market stalls and homes. A Roman poet Lucretius, in 50 BC, said "Linen-awning, stretched, over mighty theatres, gives forth at times, a cracking roar, when much 'tis beaten about, betwixt the poles and cross-beams".
Columns 6th century, and canopy from 1277. The ciborium arose in the context of a wide range of canopies, both honorific and practical, used in the ancient world to cover both important persons and religious images or objects. [5] Some of these were temporary and portable, including those using poles and textiles, and others permanent structures.
While plywood is the conventional material used in wood (timber) shear walls, advances in technology and modern building methods have produced prefabricated options such as sheet steel and steel-backed shear panels used for narrow walls bracketing an opening that have proven to provide stronger seismic resistance.
Typically in the form of a horizontal wire or rod, or a helical anchor, a tieback is commonly used along with other retaining systems (e.g. soldier piles, sheet piles, secant and tangent walls) to provide additional stability to cantilevered retaining walls. [1]