公共工程合同通用技术条款手册 第81分册第2卷：废水净化设施的设计与施工

收件人

各区长（装备部的管理处；地中海，西南部，庇卡底北部，里昂，西部，及诺曼底中部的装备部的技术研究中心；东北地区，北部—加莱海峡大区，罗纳-索纳，塞纳河，斯特拉斯堡及图卢兹等地的航空部门；纪龙德，朗格多克及南特的航海航空部门；东南地区，西南地区及法国岛的航空基地的专有部门）；

各部长（各省的装备管理部，马约特岛，St-Pierre et Miquelon 的装备管理部；Boulogne-sur-Mer，Seine-Maritime [Le Havre et Rouen]，des Bouches-du-Rhône [Marseille]，敦刻尔克和加来的港口航海部门；西南部，东南部，法国海，敦刻尔克自主港口，鲁昂，南特，波尔多，马赛，斯特拉斯堡，巴黎及瓜德罗普岛的航空基地的特殊部门；努美阿，帕皮提及莫罗尼的民航部）；

技术服务中心的领导；

巴黎机场的董事长；

法国国家铁路公司的董事长；

法国电力-煤气部门的董事长。

通知

中央行政部的各级领导；

路桥董事会的副主席；

土地审查机关，航空检查机关，航海检查机关及工艺品的专门检察机关代表团的协调人员；

中央技术部的总检查员；

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• la Publication 617 de la CEI : Symboles graphiques pour schémas.

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IEC publications prepared by the same Technical Committee

The attention of readers is drawn to the inside of the back cover, which lists IEC publications issued by the Technical Committee which has prepared the present publication.

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TABLE DES MATIÈRES

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of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.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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