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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.
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.
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.
Instructional scaffolding is the support given to a student by an instructor throughout the learning process. This support is specifically tailored to each student; this instructional approach allows students to experience student-centered learning, which tends to facilitate more efficient learning than teacher-centered learning.
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 portal frame steel building under construction. Portal frame is a construction technique where vertical supports are connected to horizontal beams or trusses via fixed joints with designed-in moment-resisting capacity. [1] The result is wide spans and open floors. Portal frame structures can be constructed using a variety of materials and ...
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]
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 ...