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Cost reduction. Compared to brick masonry or smaller ashlars, using larger stone blocks (and thereby minimizing sawing and fixer-masonry costs), means that the overall expense of constructing a building can be reduced.
The blocks may be numbered so that the masons can follow the plan procedurally. The use of massive blocks reduces costs by minimizing sawing and fixer-masonry costs. The use of a crane reduces labor, accelerates construction, and allows the masons to precisely and quickly position the blocks.
It may be necessary to repair a concrete structure following damage (e.g. due to age, chemical attack, fire, [24] impact, movement or reinforcement corrosion). Strengthening may be necessary if the structure is weakened (e.g. due to design or construction errors, excessive loading, or because of a change of use).
In the making of firebrick, fire clay is fired in the kiln until it is partly vitrified.For special purposes, the brick may also be glazed. There are two standard sizes of fire brick: 229 mm × 114 mm × 76 mm (9 in × 4 + 1 ⁄ 2 in × 3 in) and 229 mm × 114 mm × 64 mm (9 in × 4 + 1 ⁄ 2 in × 2 + 1 ⁄ 2 in). [2]
Clinker brick closeup of bricks in the so-called Clinker building on Barrow street in Greenwich Village, New York City. Dutch bricks (clinkers) found at Topsham Museum. Imported between 1660 and 1710, they were used for finer details such as fireplaces. They can be seen in many buildings in Topsham and are sometimes used in boundary walls.
A gypsum block is made of gypsum plaster and water. The manufacturing process [1] is automated at production plants where raw gypsum (CaSO 4 ·2H 2 O) is ground and dried, then heated to remove three-quarters of the bound water and thus transformed into calcium sulfate hemihydrate (CaSO 4 ·½H 2 O), also known as gypsum plaster, stucco, calcined gypsum or plaster of Paris.