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- Admiralty_scaffolding abstract "Admiralty scaffolding, also known as Obstacle Z.1 or sometimes simply given as beach scaffolding or anti-tank scaffolding, was a British design of anti-tank and anti-boat obstacle made of tubular steel. It was widely deployed on beaches of southern England, eastern England and the south western peninsula during the invasion crisis of 1940-1941. Scaffolding was also used, though more sparingly, inland.Of a number of similar designs, by far the most common was designated obstacle Z.1. This design comprised upright tubes 9 feet (2.7 m) high and 4 feet 10 inches (1.5 m) apart, these were connected by up to four horizontal tubes. Each upright was braced by a pair of diagonal tubes, at about 45°, to the rear. 20-foot (6 m) wide sections were preassembled and then carried to the sea to be placed in position at the half tide mark as an obstacle to boats.However, trials found that a 250 ton barge at 5 1⁄2 knots (6.3 mph; 10.2 km/h) or an 80 ton trawler at 7 1⁄2 knots (8.6 mph; 13.9 km/h) would pass through the obstacle as if it were not there and a trawler easily pulled out one bay with an attached wire rope. Tests in October 1940, confirmed that tanks could only break through with difficulty, as a result Z.1 was adopted as an anti-tank barrier for beaches thought suitable for landing tanks. As an anti-tank barrier it was placed at or just above the high water point where it would be difficult for tanks to get enough momentum to break through the barrier. In some places, two sets of scaffolding were set up, one in the water against boats and one at high water against tanks.The problem of securing the barriers on sand was overcome by the development of the sword picket by Stewarts & Lloyds – this device was later known at the Admiralty as the Wallace Sword.Barriers varying in length from a couple of hundred feet to three miles were constructed consuming 50% of Britain's production of scaffolding steel at an estimated cost of £6,600 per mile (equivalent to £320,000 today). Despite this, many miles of Admiralty scaffolding were erected using more than 15,000 miles (24,000 km) of scaffolding tube.After the war, the scaffolding got in the way of swimmers. Very soon, the scaffolding was removed for scrap and any remaining traces are now very rare, but are occasionally revealed by storms.".
- Admiralty_scaffolding thumbnail Admiralty_scaffolding_drawing.JPG?width=300.
- Admiralty_scaffolding wikiPageExternalLink 4%20Mark%20Harrison.pdf.
- Admiralty_scaffolding wikiPageExternalLink www.nationalarchives.gov.uk.
- Admiralty_scaffolding wikiPageID "28195097".
- Admiralty_scaffolding wikiPageLength "9450".
- Admiralty_scaffolding wikiPageOutDegree "16".
- Admiralty_scaffolding wikiPageRevisionID "692992756".
- Admiralty_scaffolding wikiPageWikiLink Admiralty.
- Admiralty_scaffolding wikiPageWikiLink Barge.
- Admiralty_scaffolding wikiPageWikiLink British_anti-invasion_preparations_of_the_Second_World_War.
- Admiralty_scaffolding wikiPageWikiLink British_hardened_field_defences_of_World_War_II.
- Admiralty_scaffolding wikiPageWikiLink Category:Anti-tank_obstacles.
- Admiralty_scaffolding wikiPageWikiLink Category:Area_denial_weapons.
- Admiralty_scaffolding wikiPageWikiLink Category:United_Kingdom_home_front_during_World_War_II.
- Admiralty_scaffolding wikiPageWikiLink East_of_England.
- Admiralty_scaffolding wikiPageWikiLink Fishing_trawler.
- Admiralty_scaffolding wikiPageWikiLink South_East_England.
- Admiralty_scaffolding wikiPageWikiLink South_West_England.
- Admiralty_scaffolding wikiPageWikiLink Stewarts_&_Lloyds.
- Admiralty_scaffolding wikiPageWikiLink File:Admiralty_scaffolding_drawing.JPG.
- Admiralty_scaffolding wikiPageWikiLink File:Admiralty_scaffolding_test_section.JPG.
- Admiralty_scaffolding wikiPageWikiLink File:Antitank2.jpg.
- Admiralty_scaffolding wikiPageWikiLinkText "Admiralty scaffolding".
- Admiralty_scaffolding wikiPageWikiLinkText "admiralty scaffolding".
- Admiralty_scaffolding wikiPageWikiLinkText "barriers of scaffolding".
- Admiralty_scaffolding wikiPageWikiLinkText "scaffolding barriers".
- Admiralty_scaffolding wikiPageWikiLinkText "scaffolding".
- Admiralty_scaffolding wikiPageUsesTemplate Template:Cite_book.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Cite_web.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Clear.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Convert.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Fortifications.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Inflation.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Inflation-fn.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Reflist.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Sfn.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Use_British_English.
- Admiralty_scaffolding wikiPageUsesTemplate Template:Use_dmy_dates.
- Admiralty_scaffolding subject Category:Anti-tank_obstacles.
- Admiralty_scaffolding subject Category:Area_denial_weapons.
- Admiralty_scaffolding subject Category:United_Kingdom_home_front_during_World_War_II.
- Admiralty_scaffolding hypernym Design.
- Admiralty_scaffolding comment "Admiralty scaffolding, also known as Obstacle Z.1 or sometimes simply given as beach scaffolding or anti-tank scaffolding, was a British design of anti-tank and anti-boat obstacle made of tubular steel. It was widely deployed on beaches of southern England, eastern England and the south western peninsula during the invasion crisis of 1940-1941. Scaffolding was also used, though more sparingly, inland.Of a number of similar designs, by far the most common was designated obstacle Z.1.".
- Admiralty_scaffolding label "Admiralty scaffolding".
- Admiralty_scaffolding sameAs Q3577360.
- Admiralty_scaffolding sameAs xc3x89chafaudage_de_lAmirautxc3xa9.
- Admiralty_scaffolding sameAs m.0ddbswk.
- Admiralty_scaffolding sameAs Q3577360.
- Admiralty_scaffolding wasDerivedFrom Admiralty_scaffolding?oldid=692992756.
- Admiralty_scaffolding depiction Admiralty_scaffolding_drawing.JPG.
- Admiralty_scaffolding isPrimaryTopicOf Admiralty_scaffolding.