Pasi
en
Strumenti di misura, strumenti di geofisica
pasi
BIT

Test su pali BIT

categoria:Controlli non distruttivi / Test su pali
marca:Piletest
articolo:BIT
 download pdf
 

Borehole Inclination Tester

Overview

BIT measures the verticality of a borehole AND of existing piles

Borehole:
BIT uses the auger/bucket itself as the centralizer. Eliminating the need for a heavy-to-move system.
The BIT enables fast and accurate determination of inclination in both dry and wet boreholes.
Large boreholes and diaphragm-walls may be quickly tested several times during drilling to enable real-time corrective action.
Existing piles:
A special centralizer is attached to the BIT sensor and lowered into a standard access tube (No need for an expensive inclinometer tube). The BIT sensor includes a gyro which constantly measures and compensates the rotation of the sensor in the tube.

Background

All piling specifications prescribe the allowable deviation of the pile axis from the vertical.

  • FHWA rules, for instance, limit the pile inclination to 20 mm/m, or 2%.
  • The ICE (UK) specifications allow a deviation of not more than 1:75 or 1.33%.

Similarly, these documents also set down the allowable deviation of raked piles.

In diaphragm and secant walls, the specification is typically even more restrictive.

For more details please see www.piletest.com