Masonry - Stonework

Stonework

• Stone blocks used in masonry can be dressed or rough.
• Stone masonry utilizing dressed stones is known as ashlar masonry, whereas masonry using irregularly shaped stones is known as rubble masonry. Both rubble and ashlar masonry can be laid in coursed rows of even height through the careful selection or cutting of stones, but a great deal of stone masonry is uncoursed.
• Slipform stonemasonry produces a hybrid wall of reinforced concrete with a rubble stone face.
• Natural stone veneers over CMU, cast-in-place, or tilt-up concrete walls are widely used to give the appearance of stone masonry.
• Sometimes river rock of smooth oval-shaped stones is used as a veneer. This type of material is not favored for solid masonry as it requires a great amount of mortar and can lack intrinsic structural strength.
• Manufactured-stone, or cultured stone, veneers are popular alternatives to natural stones.
• Attractive natural stone has become more expensive in many areas and in some areas is practically unavailable.
• Manufactured-stone veneers are typically made from concrete.
• Natural stones from quarries around the world are sampled and recreated using molds, aggregate, and colorfast pigments.
• To the casual observer there may be no visual difference between veneers of natural and manufactured stone.