EN 12270:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bergsteigerausrüstung - Klemmkeile - Sicherheitstechnische Anforderungen und PrüfverfahrenEquipement d'alpinisme et d'escalade - Coinceurs - Exigences de sécurité et méthodes d'essaiMountaineering equipment - Chocks - Safety requirements and test methods97.220.40Oprema za športe na prostem in vodne športeOutdoor and water sports equipmentICS:Ta slovenski standard je istoveten z:EN 12270:2013SIST EN 12270:2013en,fr,de01-december-2013SIST EN 12270:2013SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12270
November 2013 ICS 97.220.40 Supersedes EN 12270:1998English Version
Mountaineering equipment - Chocks - Safety requirements and test methods
Équipement d'alpinisme et d'escalade - Coinceurs - Exigences de sécurité et méthodes d'essai
Bergsteigerausrüstung - Klemmkeile - Sicherheitstechnische Anforderungen und Prüfverfahren This European Standard was approved by CEN on 28 September 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12270:2013 ESIST EN 12270:2013

Protection provided by chocks . 15 Annex B (informative)
Standards on mountaineering equipment . 16 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC . 17 Bibliography . 18
The supporting jaws shall not rotate during the test. When testing chocks fitted with textile slings, the surface of the steel bar shall have an arithmetical mean deviation of the profile of Ra = 0,8 Rmax = 6,3 surface roughness requirements when testing chocks with a means of attachment made of other than textile material. For chocks with a horizontal non-parallel cross-section according to Figure 3, the supporting jaws shall have a groove adapted to the cross-section of the chock. SIST EN 12270:2013

Key b1min minimum chock width b2min minimum chock length b1max maximum chock width b2max maximum chock length Figure 1 — Examples of chocks SIST EN 12270:2013

Key 1 loading bar 2 supporting jaws R (65 ± 2) mm or R (25 ± 1) mm 3 chock 4 means of attachment s space between the supporting jaws F force Figure 2 — Layout and adjustment of apparatus SIST EN 12270:2013

Key a non-parallel b parallel Figure 3 — Example of a chock with a horizontal non-parallel cross-section Dimensions in millimetres
a) cam-type chock SIST EN 12270:2013

b) cam-type chock showing b2 min and b2 max (width for position 2) SIST EN 12270:2013

c) cam-type chock showing b1 min and b1 max (width for position 1) Key 1 cross section reference plane Figure 4 — Example of a cam-type chock SIST EN 12270:2013

Key s space between the supporting jaws F force Figure 5 — Layout of apparatus for cam-type chocks (position 1) SIST EN 12270:2013

Key s space between the supporting jaws F force Figure 6 — Layout of apparatus for cam-type chocks (position 2) 5.2.2 Adjustment The spacing s between the supporting jaws shall be according to the following formula: −+=3minmaxminbbbs (1) where bmin
is the minimum chock width in the position being tested; bmax
is the maximum chock width in the position being tested, see Figure 1. 5.3 Conditioning and test conditions For the strength test according to 5.4.2, condition the chocks with textile means of attachment as described in EN ISO 139; Carry out the strength test at a temperature of (23 ± 5) °C. SIST EN 12270:2013
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