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Standard ÖNORM EN 978 1.4.1998 preview

ÖNORM EN 978

Underground tanks of glass-reinforced plastics (GRP) - Determination of factor alpha and factor beta

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STANDARD published on 1.4.1998


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58.10 USD

The information about the standard:

Designation standards: ÖNORM EN 978
Publication date standards: 1.4.1998
SKU: NS-772501
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM

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The category - similar standards:

Stationary containers and tanks

Annotation of standard text ÖNORM EN 978 :

In dieser ÖNORM wird eine Anleitung für eine Testmethode zur Bestimmung des Kriechfaktors a und des Alterungsfaktors b von Tanks aus glasfaserverstärkten duroplastischen Harzen für die unterirdische Lagerung von Flüssigkeiten gegeben. Der Kriechfaktor a ist das Verhältnis zwischen der Anfangsverformung eines Werkstoffes unter einer bestimmten Belastung und seiner Verformung unter gleich hoher Belastung auf einen Zeitraum von 50 Jahren extrapoliert. Der Alterungsfaktor b ist das Verhältnis zwischen der Anfangsbiegesteifigkeit und der Biegesteifigkeit nach 1000 h unter definierten Bedingungen.

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