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In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.
On entering the loft one needs to establish if there is adequate room under the ridge of the roof. A measurement of 2.3 metres is required to allow enough headroom, although you may find that you can still get a useful room from as little as 7 feet (2.1 metres), and there must be at least 2 metres clearance above the position of the access stairs.
Headspace for rimmed cartridges is the space between that forward ledge and the bolt face when the action is closed. [1] The cartridge is said to be rimless if the extractor groove is machined into the head of the case so the rim is the same diameter as the adjacent part of the case. Most modern automatic firearms use rimless cartridges.
The code also defines the clearance that is shorter than the physical clearance to account for sag curves, bridge deflection and expected settlements with a recommendation of minimum clearance of 5 metres (16 ft 5 in). [2] In UK, the "standard minimum clearance" for structures over public highways is 16 feet 6 inches (5.03 m). [3]
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Headspace or ullage, the unfilled space in a container; Headspace technology, the gaseous constituents of a closed space above liquids or solid emitting and vapors measured using headspace gas chromatography; Headspace (firearms), a chamber measurement; Headroom (photographic framing), a concept of aesthetic composition in imaging
Mount a Floating Cabinet. Make the most of a small entryway by mounting a floating cabinet on the wall under the stairs. It keeps the space open and creates a handy drop zone for everyday ...