Sitting on the lowest
plot in a subdivision built on a ridge, the home brought
to its new owners a multitude
of water and erosion problems. Accordingly, in addition
to adequate drains, a series of walls and stairways
was installed to control water flow and create usable
space
on the steeply sloping property.
A stairway was placed between two angled, 9-in.-thick
walls of 3,000 psi concrete. Each stair tread, constructed
also of 3,000 psi concrete, was pinned to the wall
with two pieces of 1⁄2-in. rebar. The steps and
tops of walls, including three 3-ft. walls used to
level the
ridge and two 2-ft. walls installed to retain soil
around trees and planting beds, were stenciled and
colored when
the concrete was poured. After removal of the forms,
vertical surfaces were stenciled and plastered.
For 1,000 sq. ft. of flatwork, fiber-reinforced 4,000
psi concrete was placed, screeded, bull floated and edged.
After a paper stencil was placed on the slab and floated
into the surface of the concrete, a dry shake color hardener
was applied at a rate of 50 lb. per 100 sq. ft. A release
agent was then cast at 30 lb. per 1,000 sq. ft. over
the entire slab. A 3-ft. 9-in. stamping tool was used
to texture the surface. Following removal of the stencil
after curing the slab, excess release was cleaned from
its surface and two coats of sealer were applied. |