What is BS EN 14574 - Pyramid puncture resistance of supported geosynthetics about? 
The popularity of geosynthetics is ever-growing in the geotechnical engineering field for its long-term performance.
BS EN 14574 specifies an index test method to determine the puncture resistance of a geosynthetic on a rigid support.
The method in BS EN 14574 simulates the efficiency of a geosynthetic protecting a geosynthetic barrier material or another contact surface against sharp rigid elements under short-term loading.
Who is BS EN 14574 - Pyramid puncture resistance of supported geosynthetics for? 
BS EN 14574 on pyramid puncture resistance of supported geosynthetics is useful for manufacturers of:
- Geotextiles
- Geogrids
- Geonets
- Geomembranes
- Geosynthetic clay liners
- Geofoam
- Geocells
- Geocomposite
Why should you use BS EN 14574 - Pyramid puncture resistance of supported geosynthetics?
Geosynthetics are synthetic products used to stabilize terrain. They are polymeric products used to solve civil engineering problems. They are used as a separator, planar drain, liquid and gas barrier reinforcement, filter, cushion or protection, etc. For that, the material needs strength and durability.
BS EN 14574 provides guidance on:
- Test configuration with rigid underlying aluminium plate
- Loading piston
- Electrical equipment for the determination of the push-through load
- Specimen Sampling
- Number and dimension of specimens
The guidelines in BS EN 14574 walk you through the process of determining the pyramid puncture resistance of supported geosynthetics to assess the durability of the product.
What’s changed since the last update?
BS EN 14574:2015 supersedes EN 14574:2004. BS EN 14574:2015 includes some technical changes with respect to EN 14574:2004. These include: 
- The deletion of Annex A (informative)
