What is the top central piece of a masonry arch called?
A keystone is the wedge-shaped stone piece at the apex of a masonry arch, the generally round one at the apex of a vault. In both cases it is the final piece placed during construction and locks all the stones into position, allowing the arch or vault to bear weight. In both arches and vaults, keystones are often enlarged beyond the structural requirements, and often decorated in some way. Keystones are often placed in the centre of the flat top of openings such as doors and windows, essentially for decorative effect.
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54 Comments
wordster
Jason Negus, Not sure what you're referring to; it was spelled correctly in my email. By the way, what is the punishment for misspelling? Do we take Cool Dude out behind the barn and beat the crap out of him? Given the state of illiteracy on the Internet, that could be a full-time job.
cbireland
Apparently most people do.
tdelisi
Donna Bayar Repsher, actually, more than 55% here got it right. Sounds like most people do know it.
bonniecardona
I just answered 1000 tests correctly, yay for me!!!
Player
Some animals are referred to as keystone species as without them entire ecosystems could fail.
Brenda Hanneman Wallace
Elaine GIbson, Thanks for that information . I live in Ontario and have never heard that about your home province !
Diding Otico
Good guess
Helen Christopulos LoBosco
I got it correct. I learned the word when someone was describing the person in the family as the keystone. I didn't understand. That is when I learned the word for the top stone in an arch is called a keystone. Keystone holds the arch together. A person (positive or negative) can psychologically be the KEYSTONE: he or she holds the group together for positive or negative. The example I know is negative. Any psychological minds there?
stellaclaude
Yay, got it!
Corey Taylor
I used to live in Pennsylvania, which is called the 'Keystone State' because back in the 1700's, the state was located at the very center of America's 13 colonies.
Elaine GIbson
In Canada, Manitoba is called the keystone province because it is in the centre of the map.
David Stephenson
Also known as capstone
Elaine Daly
In the UK it's called the crown!
joan musicmasters
Darn it I kept thinking "keystone", but I thought that was too obvious, so I guessed "crown"! Oh well...
Suzanne Beer
Got one right☹️
Peter Robertson
Meemaw To Da Bear, No,that's the "Foundation Stone". Usually laid in the North East part of the building or traditionally so.Particularly churches and temples.
Kenney Devey
Jason Negus,
What you talking about, it was spelt Masonry. Do'nt critisise people when they are correct, it shows your bad side.
Kenney Devey
It was easy if you think about it. Looking at the archeway the center stone is the key to its survival.