forms for some curved stone steps

 

well, here we are, trying to figure out if we know what we are doing ...

we have the information below ... 

click the pictures to enlarge them ...

 all we had to do is make some sense of it so that the rise 

starts at the desired final grade, the three rises are equal, and

the last step into the house is the same rise as some steps

that are already finalized about 30 feet to the left of these ...

the existing entryway slab slopes 2" from the door out 

which was another complicating computation ...

you may recognize the ceiling from this blog post 

back in february of 2022

and i thought the ceiling was tricky!

 it was, but so were the forms for the curved steps !
 

we started with a cad drawing more or less based on 

measurements from the blueprints and those taken on site .. 

at some point the offset for the stone facing on the risers was 

 changed from 4.5" to 1.5" ('thin stone' facings) and  

new drawings were made.

 

from the new drawings we decided that it would be a good idea

to make some full size masonite patterns showing the 1.75" overhanging

nose of the bluestone treads and the 1.5" offset for the stone facing.

you can see them in the top photo  ..  that gave us the 

inside radiuses for the wacky wood on the curved forms

and the tops and bottoms of the actual form pieces in green above ...  

algebra 201!

 

once the first form was in place and we confirmed the rise and run

with the set up/full size mockup in the first photowe were able 

to make the forms for the second and third pours below 

 

viola!  

base for the riser and bluestone of the first step poured yesterday!