Glossary

Helical anchorage/foundation component installed immediately following the helical lead section. Extensions consist of a steel shaft of finite length without helix plates. It is installed following the installation of the helical lead section or extensi

French: extension, spirale

Geotechnical Instrument used to measure displacement and strains in soil, rock, and cast-in-place bored piles.

French: extenssomètre/jauge de contrainte

French: résistance externe du tirant

German: Herausziehwiderstand des Ankers

Italian: resistenza esterna di ancoraggio

Portuguese: resistência externa duma ancoragem

Dutch: houdkracht van het anker (grondmechanisch)

Pulling to withdraw previously installed pile from the ground. Usually done with an impact pile extractor or a vibratory pile driver/extractor.

French: extraction, prélèvement

German: Herausziehen

Spanish: extracción

Italian: estrazione

Portuguese: extracção

Dutch: uittrekken

A device for pulling piles out of the ground. It may be an inverted steam or air hammer with yoke so equipped as to transmit upward blows to the pile body or a specially built extractor utilizing this principle. Vibratory hammers are especially effectiv

French: extracteur

The ratio of maximum available resistance or of the capacity to the allowable stress or load.

French: coefficient de sécurité

German: Sicherheitsfaktor

Spanish: coeficiente de seguridad

Italian: coefficiente de sicurezza

Portuguese: coeficiente de segurança

Dutch: veiligheidsfactor

The capacity of a foundation unit, as determined by geotechnical formula using factored soil strength parameters, or, when the capacity is determined in a field-test loading or calculated from penetrometer data, the failure load multiplied by a performanc

French: résistance pondérée de portée

The load applied to a foundation unit, multiplied by an appropriate load factor (Typically greater than unity, or as specified in the relevant code).

French: charge pondérée

Resistance to loading, multiplied by an appropriate resistance factor (Typically less than Unity, or as specified in the appropriate local code.)

French: résistance pondérée

Shear strength parameter modified (reduced) by resistance factors for cohesion and friction, as used in ultimate limit states design.