欧洲规范8 — 结构抗震设计 — 第4部分：筒仓、储罐和管道 — 国家附件

1. 本国家附件，结合第 NF EN 1990 — NF EN 1999 号法国/欧洲标准及其国家附件，与第 NF EN 1998-4：2007 号法国/欧洲标准一起使用，用于筒仓、储罐和管道系统抗震结构的计算。在全套欧洲规范的国家附件颁布之前，《为国家层面确定的参数》(NDP)，在有必要的时侯，应该按照每一个项目加以确定。

2. 当第 NF EN 1998-4：2007 号法国/欧洲标准适用于公共合同或私人合同时，国家附件也同样适用。

3. 在本国家附件中要考虑的项目的使用期限，由合同文件决定。当与有关工程结合的项目的使用期限不明确时，第 NF EN 1990 号法国/欧洲标准的国家附件中的表 2.1 (NF) 给出的数值要予以考虑。在任何情况下，该期限不能与涉及责任和保障的法律条文所规定的期限相互混淆。

4. 《为国家层面确定的参数》被加上了边框，以便更加明了。附件的其他内容为欧洲标准在法国领土上实施，提供了不矛盾的补充。

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IEC publications prepared by the same Technical Committee

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SOMMAIRE

TABLE DES MATIÈRES

:current

Foreword

This document (EN 10216-3:2002) has been prepared by Technical Committee EC/TC 29, "Steel tubes and fittings for steel tubes", the secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.

Other Parts of EN 10216 are:

Another European Standard series covering tubes for pressure purposes is:

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

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ISO 657-1 : 1988 (E)

Table 1 — Dimensions and sectional properties of hot-rolled equal-leg angles (concluded)

NOTES

1. Member countries may choose, to be included in their national standards, the sizes which are required to meet their demand.
2. For the angles so chosen, only thicknesses which can be rolled in their mills to meet the demand of the users may be selected from the list of thicknesses corresponding to equal angles in table 1.
3. The sectional area has been calculated using the formula

   S = [l/2 A - l) + 0,214 6 (r_root² - 2r_toe²)] × 1/100

   where
   

   S is the sectional area, in square centimetres;
   

   l is the thickness, in millimetres;
   

   r_root is the root radius, in millimetres;
   

   r_toe is the toe radius, in millimetres;
   

   A is the leg length, in millimetres.

4. Mass is calculated on the basis of density of steel of 7,85 kg/dm³.

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