The circular portion of the column is 15" at the cap and 18" at the base. They are 10'-8" tall from architrave to stone floor and 11'-1" on center. You will want to size your columns based on the scale and size of the space they reside in. We designed several schemes of columns in our drawings before settling on this scale and layout of columns.

Thank you so much. Do you mean, the diameter of the column is 18" across at base? Another question. How wide is it between the pillars. I am trying to determine what size I should use for mine. They will only be 9' tall, and have only 9' between the bases of the columns, the middle pitch of the roof over the front door will go to 12'. I am struggling with column diameter. Please help me

Yes, the 15" and 18" dimensions were for the diameter top and bottom. The height from floor to beam is 10'-8" vertically. A first approach would be to scale them down from what is show from 10'8" to 9'-0". This would be about 12" dia. at the cap and 15" dia. at the base. Best would be to draw it and see if there are other options.

Thank you again. You are fantastic for sharing your knowledge with me! This has been a great help.

What kind of trees are the two in front?

This porch looks lovely! What is the floor made of? Can this type of flooring be done on an existing concrete porch?

Bluestone. Depending on the concrete condition it could potentially be used, but really depends on the existing conditions

Many thanks. iI there a close up picture of the porch floor?