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A historically common type of scaffolding, putlog holes date from ancient Roman buildings. The term putlock and the newer term putlog date from the 17th century [ 3 ] and are still used today. [ 4 ] Putlogs may be supported on the outer ends by vertical poles (standards), cantilevered by one end being firmly embedded in the wall, or ...
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 ...
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.
Crane-Climbing formwork: The working platform and the formwork are a unit. Climbing formwork (crane-climbing): in this type of climbing formwork, the formwork around the structure is displaced upwards with the help of one or more cranes [4] once the hardening of the concrete has proceeded far enough.
The 17th-century perjurer Titus Oates in a pillory. The pillory is a device made of a wooden or metal framework erected on a post, with holes for securing the head and hands, used during the medieval and renaissance periods for punishment by public humiliation and often further physical abuse. [1]
Micro-mass cultures of C3H-10T1/2 cells at varied oxygen tensions stained with Alcian blue. A commonly applied definition of tissue engineering, as stated by Langer [3] and Vacanti, [4] is "an interdisciplinary field that applies the principles of engineering and life sciences toward the development of biological substitutes that restore, maintain, or improve [Biological tissue] function or a ...
The south face of Linlithgow Palace Linlithgow Palace, c. 1678. North side of Linlithgow Palace on a sunny evening Linlithgow Palace from Linlithgow Loch looking east St. Michael's Church and Linlithgow Palace from the Peel North and west faces of Linlithgow Palace Near infra-red kite aerial photo of Linlithgow Palace looking westwards St Michael's Church with its modern crown steeple, viewed ...
Both the Roman goddess Libertas and Sun god Sol Invictus ("The Unconquered Sun", pictured) influenced the design of Liberty Enlightening the World.. According to the National Park Service, the idea of a monument presented by the French people to the United States was first proposed by Édouard René de Laboulaye, president of the French Anti-Slavery Society and a prominent and important ...