Re: Letter"K"
Posted by openH2O on 2007/1/27 16:38:49
keystone
In brick laying, a keystone is indeed the most important of all brick. It is the brick/stone at the top of an arch.
It is the supporting element for the entire arch— without it the arch would collapse.
An arch built without a centering keystone is called a false or corbelled arch.
Attach file:
KEYSTONE.JPG (23.56 KB)
In brick laying, a keystone is indeed the most important of all brick. It is the brick/stone at the top of an arch.
It is the supporting element for the entire arch— without it the arch would collapse.
An arch built without a centering keystone is called a false or corbelled arch.
Attach file:
KEYSTONE.JPG (23.56 KB)This Post was from: http://okenglish.tw/newbb/viewtopic.php?forum=24&topic_id=1562&post_id=4997