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Capobianco/Kramer
Residences Retaining Wall
Project
Participants
Project
Photos
In 1993,
Baumann Engineering was approached by
the late Joseph Capobianco and Dr.
Warren Kramer, two neighbors who wanted to
build a retaining wall to protect their
homes. The hillside behind them had
been damaged and eroded by fired,
mudslide and had even suffered some loss
due to earthquake. Joe wanted to
not only stabilize the hillside, but if possible,
reclaim some of his lost square footage,
which in the gated community of Emerald
Bay, can come with a rather substantial
price tag. Initially, there
was discussion of the two neighbors to
the south of Joe, joining up as well, to
reduce costs through sharing one
mobilization fee, rather than pay 4
different contractors to set up.
The other two owners decided not to be
in on this project, though the neighbor
immediately south did ultimately hire
Baumann Engineering to do his wall, as
well (See Wise
Residence Retaining Wall). Joe Capobianco had expressed
a desire to regain some of the lost
backyard, so Baumann devised a concrete
wall with gussets at the top to support
the soil which was returned to the top
of the hillside.
The design employed tieback
reinforcement to anchor the walls into
the hillside, some in excess of 50 feet. Planters were placed at various
locations of the wall which were filled
with fast growing plants to crawl up and
down the wall.
Color was added to the shotcrete
used on the wall to simulate natural
earthtone until the plants have grown
sufficiently to cover the wall.
The design utilized
deep rooted, low fuel content vegetation
recommended by the Tree of Life Nursery.
The deep roots allowed the plants
to search deeper in the soil for
moisture, reducing irrigation costs and
at the same time helping to solidify the
soil.
By planting low fuel content
plants, Baumann was attempting to reduce
the speed and ferocity of fire on the
hillsides, where frequently the natural
brush which has overgrown for years
creates a "firestorm"
condition.
Owner(s):
Joseph Capobianco, Dr. Warren Kramer
Structural
Engineer: Baumann Engineering
Project
Manager: Baumann Engineering
General
Contractor:
Caron Construction
Concrete
Sub-contractor:
Rebar
Sub-contractor: Canyon Rebar |