欧洲规范1—结构上的作用力—第1-4部分：一般作用力—风力作用—国家附件

欧洲标准 1 —结构上的作用力

（4）所引用的条款采用第 NF EN 1991-1-4：2005 号法国/欧洲标准中的条款。

（5）本国家附件，结合第 NF EN 1990 至 NF EN1999 号法国/欧洲标准并由它们的国家附件作为补充，与第 NF EN1991-1-4：2005 号法国 / 欧洲标准一起使用，将用于新的建筑物和土木工程的计算。在全套欧洲规范颁布之前，《为国家层面确定的参数》（NDP），在有必要的时侯，应根据每一个项目加以确定。

（6）除合同文件有相反的说明外，在第 NF EN 1991-1-4 ：2005 号法国/欧洲标准适用于公共合同或私人合时，国家附件同样也适用。

（7）《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的实施，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of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.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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