ASTM-D4491 Standard Test Methods for Water Permeability of Geotextiles by Permittivity

Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

Standard Test Methods for Water Permeability of Geotextiles by Permittivity



Want this as a site license?


1.1 These test methods provide procedures for determining the hydraulic conductivity (water permeability) of geotextiles in terms of permittivity under standard testing conditions, in the uncompressed state. Included are two procedures: the constant head method and the falling head method.

1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units stated in parentheses are provided for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


Constant head testing; Drainage; Falling head test; Flow and flow rate; Geosynthet; Hydraulic conductivity; Liquids; Penetration; Permeability; Permittivity method; Water; ICS Number Code 59.080.70 (Geotextiles)

To find similar documents by ASTM Volume:

04.13 (Geosynthetics)

To find similar documents by classification:

59.080.70 (Geotextiles Including geosynthetics)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number


Revision Level

2020(E1) EDITION



Modification Type


Publication Date

Sept. 11, 2020

Document Type

Test Method

Page Count

8 pages

Committee Number