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An anchor portal or H-frame tower is a gantry structure supporting overhead power lines in a switchyard. Their static function is similar to a dead-end tower . Anchor portals are almost always steel -tube or steel-framework constructions.
This type of scaffold is generally used where extensive versatility is required. In many countries, it is common in construction . Horizontal tubes and walking decks can be placed at any height along the vertical tube (as permitted by engineering constraints), and vertical tubes, or legs, can be spaced at any distance apart, up to the maximum ...
A gallows (or less precisely scaffold) is a frame or elevated beam, typically wooden, from which objects can be suspended or "weighed". Gallows were thus widely used to suspend public weighing scales for large and heavy objects such as sacks of grain or minerals, usually positioned in markets or toll gates.
Scaffolding for rehabilitation in Madrid, Spain [1] Scaffolding for renovation on the Virgin Mary statue, Santiago de Chile, Chile.. Scaffolding, also called scaffold or staging, [2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures.
The aluminum H-frame gave the Workmate a very distinctive appearance and was considered to be "Hickman's greatest aesthetic stroke." [3] By the Type 6, the aluminum H-frames were replaced by ones of stamped steel. [4] Black & Decker have since sold 30 million Workmates (2011). [5]
In 1965, the system scaffolding specialist designed, for example, the definitive insertion-frame system for facade scaffolding construction, with its SpeedyScaf made from steel and aluminium. In 1974, Allround Scaffolding superseded conventional scaffolding construction techniques, using steel tubes and couplers, with its bolt-free wedge-head ...
An I-beam is any of various structural members with an Ɪ- (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 (especially in Polish , Bulgarian , Spanish , Italian ...
An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.