Fall protection sand
As a fall protection sand is of a special variant sand Denoted due to a grain size mm in particular for the movement of 0.2-2 under swings or other games and sports equipment suitable in which a risk of fall is.
If the grain is larger (2–16 mm), the material is called fall protection gravel and is also suitable for medium heights of up to 3 m.
Fall protection sand and gravel are first extracted from sediments like normal sand and selected according to the desired grain size.
properties
Fall protection sand and gravel have little adhesion due to their relatively large grain size of 0.2–2 mm and> 2 mm . However, the property of the large grain size is reflected in the high fall absorption. This is where fall protection sand differs from play sand , which, due to its grain size of 0–1 (max. 2) mm, has a high level of adhesion when wet, which can be used to create shapes, but which offers little or no fall absorption. While moist sand freezes in frost and hardly dampens, the properties of coarser gravel are retained.
application
Playground floors
Fall protection is prescribed according to the DIN EN 1176 standard (playground equipment and playground floors), depending on the floor material and the maximum height of fall. Concrete and asphalt allow a maximum fall height of 60 cm. Up to 100 cm stone-free topsoil and up to 150 cm maintained lawn can be used. Fall protection sand or gravel is used for greater fall heights, which absorb a fall from a maximum of 2 or 3 m in a layer thickness of 200 or 300 mm. Also, wood chips and bark mulch are admitted with the same parameters, but are subject to faster weathering.
Sports climbing facilities
Fall protection gravel is used for shock absorption outdoors on systems for sport climbing. The standard DIN EN 12572-2 stipulates a grain diameter of 8 to 16 mm and a layer thickness of 400 mm for artificial bouldering walls ; from a wall height of 3 m, an indication of additional safety techniques ( spotting , boulder mats ) is required.
Individual evidence
- ↑ a b Jörg Rampke: Playground maintenance means playground safety . Beuth Verlag , Berlin 2013, ISBN 978-3-410-23137-0 , pp. 23 .
- ↑ Fall protection gravel for all cases. In: august-oppermann.de. Retrieved on July 11, 2016 (German).
- ↑ Outdoor play areas and playground equipment. (PDF) In: publications.dguv.de. German Social Accident Insurance, p. 6 , accessed on February 22, 2015 .
- ↑ Traffic safety obligations of the operators of playground equipment. (PDF) (No longer available online.) In: www.tuev-sued.de. TÜV Süd, p. 3 , archived from the original on December 27, 2016 ; accessed on July 11, 2016 (German). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Fall protection. In: spielplatzpruefer.com. Retrieved February 22, 2015 .
- ↑ DIN EN 12572-2: 2009 Artificial climbing systems - Part 2: Safety requirements and test methods for bouldering walls . Beuth Verlag , Berlin 2009 (24 pages).
