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Panels are made slightly smaller than the available space within the frame to provide room for movement. Wood will expand and contract across the grain, and a wide panel made of solid wood could change width by a half of an inch, warping the door frame. By allowing the wood panel to float, it can expand and contract without damaging the door.
Use of float glass at Crystal Palace railway station, London. Float glass is a sheet of glass made by floating molten glass on a bed of molten metal of a low melting point, typically tin, [1] although lead was used for the process in the past. [2] This method gives the sheet uniform thickness and a very flat surface. [3]
A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.
Ship caisson at Droogdok Jan Blanken at Hellevoetsluis. A caisson is a form of lock gate.It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock to close it, or pumped dry to float it and allow it to be towed clear of the dock.
The floating piece of wood that helped save the life of Kate Winslet’s Rose in the 1997 blockbuster Titanic has sold at auction for $718,750 (£567,561).. The prop, which is made of balsa wood ...
The famous floating “door” that has caused endless heated debates since 'Titanic's 1997 release has sold for $718,750 at auction.
Some homes feel cozy or cramped when you enter, while others have an open, sometimes even regal, atmosphere as soon as you step through the front door. Often, these homes have rooms with very high ...
A floating bridge can be built in a series of sections, starting from an anchored point on the shore. Modern pontoon bridges usually use pre-fabricated floating structures. [15] Most pontoon bridges are designed for temporary use, but bridges across water bodies with a constant water level can remain in place much longer.