EP 1110-2-13
28 Jun 96
Filling, with cement grout, any voids existing at the
Contact grouting
contact of two zones of different materials, e.g.,
between a concrete tunnel lining and the surrounding
rock.
Contractor Quality Control (CQC)
The construction contractor's system to manage,
control, and document his own, his supplier's, and his
subcontractor's activities to comply with contract
requirements.
Core
A zone of low permeability material in an
embankment dam. The core is sometimes referred to
as central core, inclined core, puddle clay core, rolled
clay core, or impervious zone.
Core wall
A wall built of relatively impervious material, usually
of concrete or asphaltic concrete, in the body of an
embankment dam to prevent seepage.
Crest of dam
See top of dam.
Cross section
An elevation view of a dam formed by passing a
plane through the dam perpendicular to the axis.
Cutoff trench
A foundation excavation later to be filled with
impervious material so as to limit seepage beneath a
dam.
Cutoff wall
A wall of impervious material usually of concrete,
asphaltic concrete, or steel sheet piling constructed in
the foundation and abutments to reduce seepage
beneath and adjacent to the dam.
Dam
A barrier constructed across a watercourse for the
purpose of storage, control, or diversion of water.
a.
Afterbay dam. See regulating dam.
b. Ambursen dam. A buttress dam in which
the upstream part is a relatively thin flat slab usually
made of reinforced concrete.
B-3
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