EN 28970:1991

Timber structures - Testing of joints made with mechanical fasteners - Requirements for wood density (ISO 8970:1989)

Holzbauwerke - Prüfung von Verbindungen mit mechanischen Verbindungsmitteln - Anforderungen an die Rohdichte des Holzes (ISO 8970:1989)

Structures en bois - Essai des assemblages réalisés par organes mécaniques - Exigences concernant la masse volumique du bois (ISO 8970:1989)

La CEI 61558-2-26:2013 traite de la sécurité des transformateurs, des blocs d'alimentation et/ou des blocs d'alimentation à découpage entièrement destinés à l'économie d'énergie et à d'autres fins dans les installations électriques, au moyen d'un réglage de la tension secondaire et/ou d'autres caractéristiques électriques des circuits secondaires sans interruption des transformateurs, des blocs d'alimentation et/ou des blocs d'alimentation à découpage. L'attention des Comités nationaux est attirée sur le fait que les fabricants d'appareils et les organismes d'essai peuvent avoir besoin d'une période transitoire après la publication d'une nouvelle publication CEI, ou d'une publication amendée ou révisée, pour fabriquer des produits conformes aux nouvelles exigences et pour adapter leurs équipements aux nouveaux essais ou aux essais révisés.
Le comité recommande que le contenu de la présente publication soit entériné au niveau national au plus tôt 12 mois après la date de publication.
Cette publication doit être lue conjointement avec la CEI 61558-1:2005.

Lesene konstrukcije - Preskušanje stikov, izdelanih z mehanskimi veznimi sredstvi - Zahteve za gostoto lesa (ISO 8970:1989)

General Information

• Status: Withdrawn
• Publication Date: 20-Feb-1991
• Withdrawal Date: 14-Jun-2010
• ICS: 91.080.20 - Timber structures
• Technical Committee: CEN/TC 124 - Timber structures
• Drafting Committee: CEN/TC 124 - Timber structures
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 15-Jun-2010
• Completion Date: 15-Jun-2010
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 28970:1997 - Timber structures - Testing of joints made with mechanical fasteners - Requirements for wood density (ISO 8970:1989)

Relations

• Replaced By: EN ISO 8970:2010 - Timber structures - Testing of joints made with mechanical fasteners - Requirements for wood density (ISO 8970:2010)
• Effective Date: 19-Jun-2010

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lesene konstrukcije - Preskušanje stikov, izdelanih z mehanskimi veznimi sredstvi - Zahteve za gostoto lesa (ISO 8970:1989)Holzbauwerke - Prüfung von Verbindungen mit mechanischen Verbindungsmitteln - Anforderungen an die Rohdichte des Holzes (ISO 8970:1989)Structures en bois - Essai des assemblages réalisés par organes mécaniques - Exigences concernant la masse volumique du bois (ISO 8970:1989)Timber structures - Testing of joints made with mechanical fasteners - Requirements for wood density (ISO 8970:1989)91.080.20Lesene konstrukcijeTimber structuresICS:Ta slovenski standard je istoveten z:EN 28970:1991SIST EN 28970:1997en01-oktober-1997SIST EN 28970:1997SLOVENSKI
STANDARD



SIST EN 28970:1997



SIST EN 28970:1997



SIST EN 28970:1997



INTERNATIONAL STANDARD IS0 8970 First edition 1989-07-01 Timber structures - Testing of joints made with mechanical fasteners - Requirements for wood density Structures en bois - Essai des assemblages r&a/i& Exigences concernant la masse volumigue du bois par organes mkcaniques - Reference number IS0 8970 : 1989 (El SIST EN 28970:1997



IS0 8970 : 1989 0 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting. International Standard IS0 8970 was prepared by Technical Committee lSO/TC 165, Timber s true tures. @ IS0 1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 l Cl-l-1211 Geneve 20 l Switzerland Printed in Switzerland SIST EN 28970:1997



INTERNATIONAL STANDARD IS0 8970 : 1989 (E) Timber structures - Testing of joints made with mechanical fasteners - Requirements for wood density 1 Scope This International Standard specifies two methods for the selection of wood density for specimens which are to be used in determining by testing the strength and stiffness properties of joints made with mechanical fasteners. The two methods are equally applicable. It is assumed that the wood density is normally distributed with a coefficient of variation of about 0,15. It is emphasized that the density is only one of the properties influencing the strength of a joint. Other relevant properties are, for example, growth ring size and slope of grain. 2 Normative reference The following standard contain
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