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A water level device showing both ends at the same height. A water level (Greek: Aλφαδολάστιχο or (υδροστάθμη) [Alfadolasticho]) is a siphon utilizing two or more parts of the liquid water surface to establish a local horizontal line or plane of reference.
Some steam rollers were fitted with a scarifier mounted on the tender box at the rear. They could be swung down to road level and used to rip up the old surface before a road was remade. Another accessory was a tar sprayer – a bar mounted on the back of the roller. This was not a common fixture.
Tarmac Group Limited was a British building materials company headquartered in Wolverhampton, United Kingdom.It produced road surfacing and heavy building materials including aggregates, concrete, cement and lime, as well as operating as a road construction and maintenance subcontractor.
The apron at airports is sometimes informally called the tarmac, [6] even though most of these areas are paved with concrete, not tarmac. [9] Specific materials used include asphalt concrete (which itself is often inexactly called "tarmac", adding to the confusion), porous friction course, and Portland cement concrete. [10]
Runways, taxiways and ramps, are sometimes referred to as "tarmac", though very few runways are built using tarmac. Takeoff and landing areas defined on the surface of water for seaplanes are generally referred to as waterways. Runway lengths are now commonly given in meters worldwide, except in North America where feet are commonly used. [2]
Tarmac (company), a British building materials company; Tarmac Building Products, the construction materials division of Tarmac; Tarmac Group, former UK-based multinational building materials and construction company; Tarmac Construction, part of Tarmac Group until 1999 when sold off as Carillion
Tarmacadam is a concrete road surfacing material made by combining tar and macadam (crushed stone and sand), patented by Welsh inventor Edgar Purnell Hooley in 1902. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces invented by Scottish engineer John Loudon McAdam in the early 19th century.
Amazon Marketplace is an e-commerce platform owned and operated by Amazon that enables third-party sellers to sell new or used products directly to consumers on a fixed-price online marketplace alongside Amazon's regular offerings. Using Amazon Marketplace, third-party sellers gain access to Amazon's customer base, and Amazon expands the ...