![]() Such stowage would also require the use of large capacity lift trucks, which are expensive for stevedores to purchase and operate and are frequently not available. The reasons for such stowage may be due to the time taken to "wing out". In addition to being impossible to secure adequately, such a stow also has the effect of concentrating the weight of the stow in the centre of the hold, possibly exceeding the permissible "tonnes per square metre" tank top capacity in that area. in hatch squares, leaving large gaps between the sides of the stows of blocks (three or four high) and the ship's side frames.Ī variation upon this is a "pyramid" stow, in which the bottom one or two blocks are floored out, ship's side to ship's side, and then a stepped stow made, ending up five or six high in the hatch square. There is an increasing tendency for granite blocks to be stowed mainly in "drop-stow" i.e. Sandblasted concrete with a heavy aggregate content has an appearance similar to rough granite, and is often used as a substitute when use of real granite is impractical. Granite has been extensively used as a Dimension Stone and as flooring tiles in public and commercial buildings and monuments.Įngineers have traditionally used polished granite surface plates to establish a plane of reference, since they are relatively impervious and inflexible. ![]() The average density of granite is between 2.65 and 2.75 g/cm 3. ![]() Granite is nearly always massive (lacking internal structures), hard and tough, and therefore it has gained widespread use as a construction stone. Granite is usually found in the continental plates of the Earth's crust. Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels. Outcrops of granite tend to form tors and rounded massifs. Granite differs from granodiorite in that at least 35% of the feldspar in granite is alkali feldspar as opposed to plagioclase it is the alkali feldspar that gives many granites a distinctive pink colour. By definition, granite is an igneous rock with at least 20% quartz by volume. Granites can be pink to gray in colour, depending on their chemistry and mineralogy. A granitic rock with a porphyritic texture is sometimes known as a porphyry. Occasionally some individual crystals (phenocrysts) are larger than the groundmass, in which case the texture is known as porphyritic. This rock consists mainly of quartz, mica, and feldspar. Granite is a common type of intrusive, felsic, igneous rock which is granular and phaneritic in texture.
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