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The bond stones seen on the end of the right wall extend across the width of this tall, battered, dry-stone wall. Attribution: Humphrey Bolton

Perpend stone (parpen, parpend, perpin, and other spellings),<ref>"Parpen, parpend" def. 1. Oxford English Dictionary Second Edition on CD-ROM (v. 4.0) © Oxford University Press 2009</ref> bond stone, or tie stone is a structural element building term used by stonemasons and brick masons. Perpend is also a piece in brickwork also called a cross joint or when extending through the entire wall a transverse joint<ref>Richard, H. W.. Bricklaying and Brickcutting,. London: Longmans, Green, and co., 1901. 4. Print.</ref> or perpend bond.<ref>Phillipps, Alfred Edward, ed.. Masonry construction; a guide to approved American practice in the selection of building stone, brick, cement, and other masonry materials, and in all branches of the art of masonry construction. Chicago: American school of correspondence, 1908. 64. Print.</ref>

Usually stone walls are built with two layers of stone, an inner and an outer layer, with the space between them sometimes filled with rubble. A perpend stone is a longer stone that extended through the entire wall's width, from the outer wall to inner wall, which serves to lock the two wall layers structurally together.


Perpend stone sections
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Stone::stone'''    Category::brick    Layers::inner    Parpend::outer    Building::masonry    American::other

The bond stones seen on the end of the right wall extend across the width of this tall, battered, dry-stone wall. Attribution: Humphrey Bolton

Perpend stone (parpen, parpend, perpin, and other spellings),<ref>"Parpen, parpend" def. 1. Oxford English Dictionary Second Edition on CD-ROM (v. 4.0) © Oxford University Press 2009</ref> bond stone, or tie stone is a structural element building term used by stonemasons and brick masons. Perpend is also a piece in brickwork also called a cross joint or when extending through the entire wall a transverse joint<ref>Richard, H. W.. Bricklaying and Brickcutting,. London: Longmans, Green, and co., 1901. 4. Print.</ref> or perpend bond.<ref>Phillipps, Alfred Edward, ed.. Masonry construction; a guide to approved American practice in the selection of building stone, brick, cement, and other masonry materials, and in all branches of the art of masonry construction. Chicago: American school of correspondence, 1908. 64. Print.</ref>

Usually stone walls are built with two layers of stone, an inner and an outer layer, with the space between them sometimes filled with rubble. A perpend stone is a longer stone that extended through the entire wall's width, from the outer wall to inner wall, which serves to lock the two wall layers structurally together.


Perpend stone sections
Intro  References  

PREVIOUS: IntroNEXT: References
<<>>