CC1 terms Flashcards
a construction material produced by combining Portland
cement with aggregate and water
Concrete
usually weighs from 140 to 160 lb/cu. ft.
Normal-weight concrete
may weigh from 15 to 90 lb/cu. ft. and have a 28-day
compressive strength of 100 to 1000 psi
Lightweight insulating concrete
concrete used for structures such as dams in which the
weight of the concrete provides most of the strength of
the structure
Mass concrete
made with heavy aggregates such as barite, magnetite,
and steel punchings; used primarily for nuclear radiation
shielding
Heavyweight concrete
is concrete that has been cast into the desired shape
prior to placement in a structure
Refractory concrete
refers to bringing of a concrete surface to true grade with
enough mortar to produce the desired finish
Leveling
refers to rounding off the formed edge of a slab to prevent
chipping or damage
Edging
refers to moving a straight edge back and forth with a
sawlike motion on the surface of newly-placed concrete
Screeding
premolded inserts are placed in concrete slabs to
control cracking in the concrete as a result of shrinkage
Jointing
the tendency of dry materials in concrete to settle to the
bottom and displace the mixing water to the surface
Bleeding
done on slabs that are left exposed or to receive thin
finishes such as resilient flooring, carpet, tile or paint
Troweling
the breaking away of hardened concrete surface of a slab
to a depth of about 1/6 to 3/16 of an inch. Usually occurs
in the early age of the slab
Scaling
a protected water area to provide safe and suitable
accommodation for ships for the transfer of cargo,
refueling, repairs, etc.
Harbor
harbors protected from storms and waves by the natural
configuration of the land
Natural harbors
harbors protected by breakwaters or harbors created by
dredging
Artificial harbors
a sheltered place where the ship may receive or
discharge cargo. It includes the harbor with its approach
channels and anchorage places.
Port
a navigable channel in harbor, offshore, etc., the usual
course taken by vessels in such places
Fairway
a continuous structure built parallel to along the margin
of the sea or alongside riverbanks, canals, or waterways
where vessels may lie alongside to receive or discharge
cargo, embark or disembark passengers or lie at rest
Wharf
any structure built into the sea but not parallel to the
coastline and includes any stage, stair landing place,
landing stage jetty, floating barge, and pontoon, any
bridge or other works connected there with
Pier
a landing stage or small pier at which boats can dock or
be moored
Jetty
a berth structure for mooring the ship on the open sea,
an isolated piled or gravity structure used either to
maneuver a ship or facilitate holding it in position at its
berth
Dolphin
the hypothetical wave whose height and period are the
mean height and period of a wave group
Significant wave
it is the highest wave in the wave group
Highest wave
a wave whose height and period are equal to the mean
height and period of all the waves in the wave group
Mean wave
is the wave at a place where water depth is at least onehalf of the wavelength; the wave parameters are
expressed with those of the significant wave at this place
Deepwater waves
average of sea water level for all stages of the tide over a
19-year period
Mean Sea Level
is the height of the low water over a 19-year period
Mean Low Water
is the average height of the lower low waters over a 19-
year period
Mean Lower Low Water
the abnormal rise of the sea level that occurs when a
typhoon passes by. This rise above normal level on this
open coast is due to atmosphere pressure reduction as
well as due to wind stress
Storm Surge
waves with an extremely long period that mainly occur
when there is a sudden large-scale sea floor movement
usually associated with severe, shallow focus
earthquakes
Tsunamis
phenomenon involving abnormal oscillations of the
water level with a period of approximately a few minutes
to a few tens of minutes
Seiche
