| As you can see here in this picture we used a piece of 1-1/8 inch
plywood for our rounded stair riser base which was scrap from our stair
treads after we cut them. You look closely you can see the glue losing
out to the bottom in between the concrete and the plywood. You can also
use shots and pins to fasten the plywood to the cement.
round stair tread and riser
Upper Rounded Stair Tread
If you look in
the picture you will see 2 shots and pins one to the right and one to
the left attached to the 2 x 4 treated material. Make sure that the
rounded base is held back three quarters of an inch so when you nail the
plywood strips for the risers they will be flush or even with the front
riser.
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