New PDF release: Geotechnical investigation and testing - Field testing -
By ISO/TC 182/SC 1
This record specifies requisites for oblique investigations of soil through dynamic probing as a part of geotechnical research and checking out in accordance with EN 1997-1 and EN 1997-2.
This rfile covers the choice of the resistance of soils and tender rocks in situ to the dynamic penetration
of a cone. A hammer of a given mass and given peak of fall is used to force the cone. The penetration resistance
is outlined because the variety of blows required to force the cone over an outlined distance. a continual checklist is
provided with recognize to intensity yet no samples are recovered.
Four tactics are integrated, masking a variety of particular paintings according to blow:
- dynamic probing gentle (DPL): try representing the reduce finish of the mass diversity of dynamic gear;
- dynamic probing medium (DPM): attempt representing the medium mass variety of dynamic gear;
- dynamic probing heavy (DPH): try out representing the medium to very heavy mass variety of dynamic gear;
- dynamic probing large heavy (DPSH): try representing the higher finish of the mass diversity of dynamic
The attempt result of this rfile are particularly suited to the qualitative selection of a soil profile including
direct investigations (e.g. sampling in line with prEN ISO 22475-1) or as a relative comparability of alternative in situ assessments.
They can also be used for the choice of the energy and deformation houses of soils, normally of the cohesionless sort but additionally in all probability in fine-grained soils, via acceptable correlations. the implications can be used to figure out the intensity to very dense floor layers e.g. to figure out the size of finish bearing piles, and to notice very free, voided, back-filled or infilled flooring.
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Additional resources for Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing (ISO 22476-2:2005)
EN ISO 22476-2:2005 (E) The use of qd has the potential to allow the configuration of equipment to be varied down a profile as the blow counts fall too low (reduce the hammer mass) or rise too high (increase the hammer mass). 2 — Data from DPL, DPM, DPH and DPSH for an overconsolidated glacial till 32 EN ISO 22476-2:2005 (E) Bibliography  ASTM D 4633-86: Standard test method for stress wave energy measurements for dynamic penetrometer testing systems. - American Society for Testing and Materials, Philadelphia 1986.
On Site Characterization, Atlanta 1998, Vol. 2, 901–905. : Summary of Standard Penetration Test (SPT) energy measurements experience. - Proc. 1st Int. Conf. on Site Characterization, Atlanta 1998, Vol. 2, 919–926. : Du Pénétromètre dynamique au battage des pieux. - Revue Française de Géotéchnique No 76, 1996. : La formule des Hollandais ou le conformisme dans l'enseignement. - Revue Française de Géotéchique No 87,1999. , Yoshida, H. & Kita, K: Significance of two-point strain measurements in SPT.
Du Pénétromètre dynamique au battage des pieux. - Revue Française de Géotéchnique No 76, 1996. : La formule des Hollandais ou le conformisme dans l'enseignement. - Revue Française de Géotéchique No 87,1999. , Yoshida, H. & Kita, K: Significance of two-point strain measurements in SPT. - Soils and Foundations, JSSMFE, Vol. 32, 1992, No 2, pp. 67-82.
Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing (ISO 22476-2:2005) by ISO/TC 182/SC 1