ISO 811-2018 PDF
Name in English:
St ISO 811-2018
Name in Russian:
Ст ISO 811-2018
Original standard ISO 811-2018 in PDF full version. Additional info + preview on request
Full title and description
ISO 811:2018 — Textiles — Determination of resistance to water penetration — Hydrostatic pressure test. This international standard specifies a hydrostatic pressure method for determining the resistance of textile fabrics to penetration by water; it applies to fabrics intended to be water‑resistant whether or not they have been given a water‑resistant or water‑repellent finish.
Abstract
ISO 811:2018 defines the hydrostatic head (pressure) test in which a specimen is subjected to a steadily increasing column pressure of water on one face until penetration is observed. The measured hydrostatic pressure (hydrostatic head) is used as an index of the fabric's resistance to water penetration. The method is applicable to coated and uncoated fabrics and is used for quality control, specification and classification of water‑resistance properties.
General information
- Status: Published (International Standard).
- Publication date: March 2018 (Edition 2, 2018).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 59.080.30 — Textile fabrics.
- Edition / version: Edition 2 (2018), replaces ISO 811:1981 (withdrawn).
- Number of pages: ISO metadata lists 5 pages for the published standard; some national/adopted versions and commercial PDFs show different page counts (e.g., 12 pages) due to national front matter or formatting.
Scope
Specifies a hydrostatic pressure method for determining resistance to water penetration of all types of fabrics intended to be water‑resistant, whether or not they have a water‑resistant or water‑repellent finish. The method measures the pressure at which water first penetrates the specimen under controlled conditions and is intended for use in laboratory testing, specification and quality control.
Key topics and requirements
- Hydrostatic pressure (hydrostatic head) test principle — application of steadily increasing water pressure to one face of a specimen until penetration occurs.
- Definition of end‑point (penetration observed in specified number of places) and reporting of hydrostatic pressure value.
- Requirements for test specimen preparation, conditioning, mounting and orientation.
- Apparatus description and calibration expectations for the hydrostatic head apparatus.
- Applicability to a wide range of textile constructions including coated and uncoated fabrics and those with water‑repellent finishes; limitations for some specialty materials noted in normative text.
Typical use and users
Used by textile manufacturers, quality control laboratories, independent testing laboratories, product designers and specifiers, procurement teams and conformity assessment bodies to quantify and specify water‑penetration resistance of fabrics (outerwear, technical textiles, tarpaulins, tents, upholstery, coated materials). National standards bodies and manufacturers adopting the ISO test into regional standards also use it.
Related standards
Replaces ISO 811:1981. Commonly referenced alongside other textile water and moisture tests such as ISO 15496 (water vapour permeability — quality control), ISO 11092 (towel/comfort/thermal and water vapour resistance) and ISO 20158 (water absorption tests) as part of a suite of textile performance tests; EN/BS adoptions exist (e.g., BS EN ISO 811:2018). National or sector standards for finished products may reference this method.
Keywords
hydrostatic pressure; hydrostatic head; water penetration; water resistance; textiles; water‑repellent finish; waterproofing; fabric testing; ISO 811:2018.
FAQ
Q: What is this standard?
A: ISO 811:2018 is an international standard that specifies a hydrostatic pressure (hydrostatic head) method for determining the resistance of textile fabrics to penetration by water.
Q: What does it cover?
A: It covers the principle of applying steadily increasing water pressure to one face of a fabric specimen, the definition of penetration end‑points, specimen preparation and conditioning, apparatus requirements and reporting of the hydrostatic pressure at which penetration occurs. The method is applicable to both coated and uncoated fabrics intended to be water‑resistant.
Q: Who typically uses it?
A: Textile and outerwear manufacturers, independent and in‑house testing laboratories, product developers, procurement/specification teams, and national standards bodies that adopt or reference the ISO test method.
Q: Is it current or superseded?
A: ISO 811:2018 is the current edition (Edition 2) published in March 2018 and it supersedes ISO 811:1981. Standards are subject to periodic review by ISO; users should confirm any national adoptions or amendments for the latest status.
Q: Is it part of a series?
A: It is part of the family of ISO textile test methods addressing liquid and moisture performance of fabrics; related standards include ISO 15496 (water vapour permeability — QC), ISO 11092 (thermal and water vapour resistance) and ISO 20158 (water absorption). Regional/adopted versions may be published as EN or national standards.
Q: What are the key keywords?
A: hydrostatic pressure, hydrostatic head, water penetration, water resistance, waterproofing, textile fabrics, water‑repellent finish.