# ISO 811:1981 — Withdrawn and superseded ISO standards

For ISO 811:1981, item title is Textile fabrics — Determination of resistance to water penetration — Hydrostatic pressure test; status code is 9599; successor is ISO 811:2018; withdrawn / published date is 1981-09-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 811:1981 _(verified: appears in the quote below)_
- **Item title:** Textile fabrics — Determination of resistance to water penetration — Hydrostatic pressure test _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 811:2018
- **Withdrawn / published date:** 1981-09-01 _(verified: appears in the quote below)_

## What the source says

> 5156,IS,,ISO 811:1981,Textile fabrics — Determination of resistance to water penetration — Hydrostatic pressure test,Étoffes — Détermination de la résistance à la pénétration de l'eau — Essai sous pression hydrostatique,1981-09-01,1,['59.080.30'],ISO/TC 38/SC 2,9599,,[65149],"['en','fr']",3,"<p>A specimen is subjected to a steadily increasing pressure of water on one face, under standard conditions, until penetration occurs in three places. The water pressure may be applied from below or from above the test specimen. The hydrostatic head supported by a fabric is a measure of the resistance to the passage of water through the fabric.</p>"

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).