Keystone Size

[brickie in oz]

Re: Keystone Size

Ok my bad, I saw a graphic of an arch with a whopping great gap at the top so I assumed it was for the arch.
Here.

http://www.fornobravo.com/forum/f8/mortar-joints-19014.html#post146703

[brickie in oz]

Re: Keystone Size

Sounds fine to me, you won't really know until you get there.
The only thing I would say is make sure it is not to tight a fit you wan't it to be a snug fit.

I think they are talking about the front arch, not the top of dame.

[K79]

Re: Keystone Size

I have a design now where my keysotone will be as round as I can make it. The top of my keystone would have a radius of 2.5" and the bottom 2.18". Do these dimensions look sound?

[K79]

Re: Keystone Size

What should be the minimum area of the small side of my keystone? Any pointers as to what I should do? What would the ideal keystone be?

[brickie in oz]

Re: Keystone Size

Is it ok to have a final keystone that is about 1/2" at the base and 3/4" at the top. Do you need mortar for a keystone of that size?

It will crack, adjust you arch to work bricks either with slightly larger joints or a flatter arch.
You should work it out prior to laying the arch.

[K79]

Is it ok to have a final keystone that is about 1/2" at the base and 3/4" at the top. Do you need mortar for a keystone of that size?