Firebacks Opus spicatum



fireplace @ usk castle


herringbone work, particularly in stone, used make firebacks in stone hearths. acidic flue gases tend corrode lime mortar, finely-set herringbone remain intact minimum of mortar used. usk castle has several fine examples. herringbone pattern produces opposing shear plane faces, increasing relative surface area , therefore rendering more sound design mortar , brick.







Comments

Popular posts from this blog

Causes Portuguese conquest of the Banda Oriental

History The Vandals

Publications Daniel Kolak