AASHTO Designation: T 215-70 (2007) pdf free download

Standard  Method of Test for

Permeability  of Granular Soils (Constant Head)

AASHTO Designation: T 215-70 (2007)

 ASTM Designation: D 2434-68 (1994r1

AASHTO Designation: T 215-70 (2007) pdf free download

AASHTO T 215-70 (2007) is identical to ASTM D 2434-68 (l 994t  1    except that all references to

ASTM Standard D 422 contained in ASTM D 2434-68 (1994t  1     shall be replaced with AASHTO Standard T 88


1.1   This test  method  covers the  determination  of the coefficient of permeability by a constant-head method  for the  laminar  flow of  water  through  granular  soils.

The procedure is to establish representative values of the coeffi• cient of permeability of granular  soils that  may  occur in natural deposits as placed in embankments, or when used as base courses under pavements.

In order to limit consolida• tion influences during testing, this procedure is limited to disturbed granular soils containing not more than  10 % soil passing the 75-µm (No. 200) sieve.

1.2  This standard does not purport to address all of the safety problems,  if any, associated with its use.

II is the responsibility of the user of this standard to establish appro• priate safety and health practices and determine the applica• bility of regulatory limitations prior to use.

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