Earth Anchors |
Robs or cables installed into the adjacent soil mass or rock. Portion beyond zone of active pressure grouted to hold a soldier pile or similar walled excavation. The anchors may be installed horizontally or at a slope. |
Earth Auger |
See Auger. |
Earth Pressure |
Normally used in reference to the lateral pressure or force imposed by a soil mass against an earth-supporting structure such as a retaining wall or basement wall, or on a fictitious vertical plane located within a soil mass. The coefficient of earth pressure refers to the ratio of lateral pressure to vertical pressure existing at a point in a soil mass, and can be "active," "at rest," or "passive" depending on the assumed condition. |
Eccentric Loading |
Load that does not bear axially on the pile, usually due either to the pile being driven out of plumb or plan location or the actual imposed load condition. |
Edge Form |
A low form constructed around the perimeter of an area to contain concrete being placed for flat surfaces such as floors and sidewalks. |
EIC |
Engineering Institute of Canada. |
Elastic Deformation |
Alteration in length of a pile, or structural member due to load (reduction for compression piles, elongation for tension piles). An important factor in uating apparent pile movements under test load. Also called Elastic Shortening, Elongation. |
Elastic Shortening |
A reduction in the length of a pile or structurial member due to the imposed load. A factor to be considered in uating pile movement under a load test. |
Elephant Trunk |
A steel tube with flared bottom, used to pour concrete under water. The tubes bottom is kept in the wet concrete and the tube is raised as the concrete raises. |
Elevation |
The vertical location of a point relative to a fixed reference (i.e., plus or minus sea level). |
Embedment |
1. The length of the pile from the surface of the
ground or from the cutoff below the ground to the tip of the
pile. |
Encased Beam |
Steel beam surrounded by concrete. |
Encasement |
See Pile Encasement. |
End Bearing Pile |
A pile that supports the major portion of the load placed upon it by end or tip bearing on a firm stratum existing at some depth below the ground surface. |
End Closure |
A plate or point attached to the tip of a pipe or shell pile. |
End Resistance |
The static soil resistance at the pile end to loading. Also called Tip Resistance. |
Energy, Impact |
The kinetic energy delivered by a pile hammer to the drive cap. |
Energy, Rated |
The manufacturer's specified energy of a powered pile hammer. |
Engineering Geologist |
A geologist, who may also have engineering training, specializing in the application of geology to engineering problems. |
Engineering News Formula |
One of many dynamic formulae for estimating the
static load bearing capacity of a driven pile. |
Enlarged Base |
1. A pile base reamed out or enlarged by driving
out successive charges of dry concrete or gravel from the base of
an open-ended driving tube to form a bulb. This has the effect of
increasing the bearing area of the pile and compacting the
soil. |
Epoxy Grout |
A two (or more) part resin that, when mized, produces a high-strength bonding material. |
European Lead |
A term applied to a lead in which the hammer is mounted in front of the lead. Also called Mast Lead, Monkey Stick, Truss Lead, Triangular Lead. |
Excavate |
To remove soil for a footing or to establish a uniform grade. |
Exhaust port |
1. The outlet fluid path of all fluid powered
hammers. |
Expanded Base |
See Enlarged Base, Compacted Concrete Pile. |
Expanded Pile |
A pile with a mechanical device for expanding the bottom for greater beraing or resistance uplift. |
Expansion Dam |
Part of the bridge that lets it expand and contract with temperature changes. |
Expansion Joint |
A pre-formed piece of fiberous or asphaltic material used to seperate units of concrete to prevent cracking due to expansion and contraction. |
Explosive Force |
The force exerted on a pile by the explosion of the diesel fuel, which is equal to the gas pressure created by the explosion times the area of the cylinder bore. |
Extended Leads |
Pile hammer leads which extend above and attach to the boom of the crane. |
Extraction |
Pulling to withdrawn previously isntalled pile from the ground. Usually done with an impact pile extractor or a vibratory pile driver/extractor. |
Extractor |
See Pile Extractor. |
Extruded Wye |
A device for connecting arch wall sections to the main cells of a cofferdam. Extruded in a solid Y shape, it is an alternative to fabricated tees or wyes. |
Eye Splice |
a loop spliced in the end of a wire rope. |