What is ISO/TR 18228-3 about?
ISO/TR 18228-3 is the third part of the multi-series standard. ISO/TR 18228-3 provides general considerations to support the design guidance to geotechnical and civil engineers involved in the design of structures in which a geotextile is used as a filter.
The key potential failure mechanisms are described, and guidance is proposed to select engineering properties.
There are two key types of application of geotextile filters, which involve different filtration mechanisms, thus different approaches to design:
- Filtration of soils
- Filtration of slurries or suspended particles
Who is ISO/TR 18228-3 for?
ISO/TR 18228-3 on geosynthetics is useful for:
- Geotechnical engineers
- Civil engineers
- Public and private contractors
Why should you use ISO/TR 18228-3?
Geotextiles acts as surfacing when a smooth and flat ground surface is required and prevents the soil particles being removed from the soil surface. The filtration function is to stabilize the soil by maintaining in place the soil skeleton in contact with the geotextile surface and restrain uncontrolled passage of soil, while allowing the passage of water or other fluids and some of the finest particles transported in suspension across the filter. The geotextile filter can be thought of as a catalyst to create a natural granular filter in the thin soil layer in contact.
ISO/TR 18228-3 provides you guidance for designs using geosynthetics for soils and below ground structures in contact with natural soils, fills and asphalt.
As a result of the requirements and guidance under ISO/TR 18228-3, you will able to choose the right material, determine the functional properties and retention criteria of the soil skeleton and test the soil/geotextile filtration compatibility through various parameters.
Altogether ISO/TR 18228-3 helps you achieve efficiency with respect to the filtration of soil and below ground structures using geosynthetics. This helps establish durable and reliable structures basis several site-specific factors. The retention of compacted soil is crucial in projects involving drainage systems, dams, coastal protection, waterways, canals etc. Moreover, environmental conditions that might prevail during the service life of the geotextile as well as during its installation are considered in geotextile filtration design. As a result, with these standardized guidelines you will be able to acquire global acceptance and credibility in field of geotechnical engineering and design
