Engineering brick

Camborne railway station, with hard blue engineering bricks used as a damp course and as a decorative edging to doorways and windows

Engineering bricks are a type of brick used where strength, low water porosity or acid (flue gas) resistance are needed. Engineering bricks can be used for damp-proof courses.

Clay engineering bricks are defined in 6.4.51 of British Standard BS ISO 6707-1;2014 (buildings & civil engineering works - vocabulary - general terms) as "fire-clay brick that has a dense and strong semi-vitreous body and which conforms to defined limits for water absorption and compressive strength"[1]

Stronger and less porous engineering bricks (UK Class A) are usually blue due to the higher firing temperature[2] whilst class B bricks are usually red. Class A bricks have a strength of 125 N/mm² and water absorption of less than 4.5%; Class B bricks have a strength greater than 75 N/mm² and water absorption of less than 7%.

Accrington brick is one type of engineering brick, which was used in the construction of the foundations in the Empire State Building.

See also

References

  1. ↑ https://shop.bsigroup.com/ProductDetail/?pid=000000000030257212
  2. ↑ http://www.ucl.ac.uk/earth-sciences/impact/geology/london/ucl/materials/brick
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