a. A bar used as a tie rod. Webster 3rd
b. A rod between two railway switch rails to hold them to gauge.
Webster 3rd
A retaining wall tied into the adjoining ground by means of a deadman
(wood block) or other suitable anchorage. Hammond
a. A line at constant temperature that connects any two phases that are in
equilibrium at the temperature of the tie line. Syn:conode
b. A line measured on the ground to connect some object to a survey; e.g.,
a line joining opposite corners of a four-sided figure, thereby enabling
its area to be checked by triangulation. AGI
An isometric mineral, HgSe ; has sphalerite structure; dark gray to black.
A metal plate used under rails where they rest on ties. The rail is spiked
to the tie through holes in the plate. Jones, 1
a. A point to which a tie is made; esp. a point of closure of a survey
either on itself or on another survey. AGI
b. An image point identified on oblique aerial photographs in the overlap
area between two or more adjacent strips of photography. They tie
individual sets of photographs into a single flight unit and adjacent
flights into a common network. AGI
When track is not adequately drained and water enters the ballast and
roadbed, tie pumping occurs. Under the action of the rolling stock,
pressure on the tie discharges water to the surface, washing the ballast
from beneath and around the tie.
A round or square iron rod passing through or over a furnace and connected
with a buckstay to assist in binding the furnace together. Fay
Sp. Any rock or mineral; tierra blanca (Mex.), a calcareous tufa; tierra
de batan, fuller's earth; tierra de fluor (Venez.), a bed of reddish
clayey earth; tierra de porcelana, china clay; tierra pesada, heavy spar.
Fay
A Spanish term for white ground or white earth, and applied to white
calcareous deposits such as tufa, caliche, and chalky limestone.
AGI
a. Sparry calcite in Wisconsin and southwestern Missouri zinc fields.
b. Sparry barite in southeastern Missouri.
A hydrocarbon present in certain diamonds causing phosphorescence.
A device, as a fork, for supporting a continuous series of well-boring
rods or tubes while raising or lowering them in the hole.
Standard, 2; Fay
Alternative spelling of tiger's-eye.
a. A usually yellow-brown chatoyant stone that is much used for ornament
and is a silicified crocidolite in which the fibers penetrating the quartz
are changed to oxide of iron. Also spelled tigereye. CF:hawk's-eye
See also:occidental cat's-eye; oriental cat's-eye. Webster 3rd
b. Crocidolite asbestos replaced by quartz to yield a yellow-brown
chatoyant stone used for ornament.
c. Ceramic glaze resembling tiger's-eye.
a. Soil or rock formations lacking veins of weakness.
Syn:tight formation
b. Blasts or blastholes around which rock cannot break away freely.
Nichols, 1
c. Inadequate clearance or the barest minimum of clearance between working
parts. Long
d. Unbroken, crack-free, and solid rock in which a naked hole will stand
without caving. Long
e. A borehole made impermeable to water by cementation or casing.
Long
f. An impermeable rock formation. Long
g. An underground opening having limited space in which to work.
Long
h. Lacking in porosity; impervious. Wheeler, R.R.
In sandstone quarrying, a term used to describe the rock if it is massive,
showing no open-bed seams. CF:thin-bedded; thick-bedded.
AIME, 1
A clay that is dense or approaches vitrification after firing.
See:tight; tight rock.
a. A borehole the diameter of which is too small for adequate clearance
between the drill-stem equipment and/or inserted casing. Long
b. A borehole the wall rocks of which are impermeable to water or have
been made tight by cementation or insertion of casing. Long
c. A borehole-drilling operation, access to which and information about
which are not released except to authorized persons. Long
Lagging placed touching each other. See also:tight sheathing