1、BRITISH STANDARD Inland navigation vessels - Stairs with inclination angles of 45“ to 60“- Requirements, types O The European Standard EN 790:2001 has the status of a British Standard ICs 47.020.10 BS EN 790:200 1 O NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 790:200
2、1 Amd. No. National foreword Date Comments This British Standard is the official English language version of EN 790:2001. It supersedes BS EN 790:1995 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee SME/32, Ships and marine technology - Steering commi
3、ttee, to Subcommittee SME/32/7, Inland navigation vessels, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related intern
4、ational and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be f
5、ound in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standa
6、rds are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Engineering Sector Committee, was Summary Of pages This document comprises a front c
7、over, an inside front cover, the EN title page, published under the authority of the Standards Committee and comes into effect on 15 September 2001 pages 2 to 9 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pu
8、blication O BSI 08-2001 ISBN O 580 38085 8 EUROPEAN STANDARD NORME EUROPENNE O EUROPISCHE NORM June 2001 ICs 47.020.1 O; 47.060 Supersedes EN 790:1994 English version Inland navigation vessels - Stairs with inclination angles of 45“ to 60“ - Requirements, types Bateaux de navigation intrieure - Esca
9、liers a angles dinclinaison entre 45“ et 60“ - Exigences, types Fahrzeuge der Binnenschiffahrt - Treppen mit Steigungswinkeln von 45“ bis 60“ - Anforderungen, Bauarten This European Standard was approved by CEN on 8 March 2001. CEN members are bound to comply with the CENKENELEC Internal Regulations
10、 which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European S
11、tandard exists in three official versions (English, French, German). A version in any other language made by translation versions. - f CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Ne
12、therlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official d EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES K
13、OMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-I050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 790:2001 E Page 2 EN 790:2001 Contents Page Foreword 3 1 2 3 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10
14、 5 6 Scope . 4 Normative references 4 Terms and definitions . 4 Design 5 Dimensions 6 Space between steps 8 Deviation for stairs for a height difference below 1. O m 8 Landings/platforms adjacent to stairs 8 Safety of treads . 8 Hand raildrailings . 8 Headroom 8 Strength . 8 Fire resistance . 9 Manu
15、facturers declaration . 9 Designation 9 Safety requirements 5 Page 3 EN 790:2001 Foreword This European Standard has been prepared by Technical Committee CENTTC 15 “Inland navigation vessels“ , the secretariat of which is held by DIN. This European Standard supersedes EN 790:1994. This European Stan
16、dard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2001, and conflicting national standards shall be withdrawn by November 2001. The standard specifies requirements for stairs within the meaning of Council Di
17、rective 82/14/EEC of 4 October 1982 laying down technical requirements for inland waterway vessels. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denma
18、rk, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O Page 4 EN 790:2001 1 Scope This European Standard applies to stairs with inclination angles of 45“ to 60, having at least two steps, in worki
19、ng areas of inland navigation vessels. It does not apply to stairs in passenger areas. NOTE Whenever possible, stairs specified in EN 13056 should be preferred. 2 Normative references This European Standard incorporates by dated or undated reference, provisions fronm other publications. These normat
20、ive references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated refere
21、nces the latest edition of the publication referred to applies (including amendments). EN 71 1, Inland navigation vesselst - Railings for decks - Requirements, types EN 22768-1, General tolerances - Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (Identi
22、cal to IS0 2768- 1: 1989) EN 13056:2000, Inland navigation vessels - Stairs with inclination angles of 30“ to e 45“ - Requirements, types 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 stair walkway with steps solidly fixed between
23、two planes EN 13056:2000,3.1 3.2 inclination angle angle between the pitch line connecting the front edge of the steps and the horizontal line EN 13056:2000, 3.21 3.3 stair breadth clear breadth of the stair measured between the strings EN 13056:20OO, 3.31 3.4 headroom perpendicular distance between
24、 the pitch line connecting the front edges of the steps and the fixed components above them 3.5 step tread of the stair EN 13056:2000, 3.51 li Page 5 EN 790:2001 :ace between steps vertical distance between the upper edges of successive steps EN 13056:2000, 3.61 3.7 depth of steps distance between t
25、he front and rear edges of the steps measured on the tread EN 13056:2000,3.71 3.8 string lateral limitation of the stair supporting the steps EN 13056:2000, 3.81 3.9 z:uction of stanchions, hand rail and intermediate rails or network EN 13056:2000, 3.91 3.10 height of railing perpendicular distance
26、between the pitch line connecting the front edges of the steps and the upper edge of the hand rail -. 3.1 1 hand rail . % ._ 3.1 1.1 upper continuous part of a railing running in parallel to the string and serving as a handhold to persons using the stair and protecting them from falling outboard of
27、the railing EN 13056:2000, 3.1 1 .l 3.1 1.2 round secton which is fixed at a bulkhead adjacent to the stair, running in parallel to the stairway and serving as a handhold EN 13056:2000, 3.1 1.21 3.12 stanchion part of the railing connecting hand rail and intermediate rail, if any, to the string EN 1
28、3056:2000, 3.121 3.13 intermediate rail continuous part fixed between hand rail and string serving as additional protection from falling outboard of the railing 4 Safety requirements 4.1 Design For stairs, the dimensions and specifications given in 4.2 to 6 shall be met; the design style does not ha
29、ve to correspond to figure 1. Page 6 EN 790:2001 Symbol 4.2 Dimensions Explanation Dimensions see table 2 Inclination anale of the stair General tolerances: IS0 2768 - c conforming to EN 22768-1 A B Stairs, railings, platforms as well as free space in front of and above the stairs shall conform to t
30、o specifications given in tables 1 and 2. Space between steps DeDth of stem see table 2,4.3 and 4.4 see table 2 Table 1 - Stair dimensions and their explanation Dimensions in millimetres E fl f3 Vertical distance between the upper rear edge of the highest step and the front edge of the upper landing
31、 Stair breadth between the strings Clear width between railinas or hand rails I 30 2 600 2 600 i J k I C I Vertical distance between the upper edge of the lowest step and the floor Vertical distance between the centre lines of hand railand intermediate rail = h/2 Distance between stanchions, measure
32、d at the hand rail Il 500 Headroom 2 2 100 200 :$ 200 2 230 2 200 2 175 2 150 Tabee 2 - Dimensions a, a und 6 Dimensions in millimetres ) Intemediate values of a are permissible, the associated values of a and b are to be interpolated. b, see 4.4 Page 7 EN 790:2001 Stair with 45“ inclination angle i
33、s illustrated o Dimensions in millimetres 2 / Legend 1 Step on upper landing 2 Step one step spacing a lower than upper landing Figure 1 - Illustration of stair with 45O inclination angle o Page 8 EN 790:2001 4.3 Space between steps The selected space between steps a shall be kept for all steps of a
34、 stair. The value of a for two successive steps shall not differ by more than f 2 mm. The uppermost step of a stair shall be at the same horizontal level as the adjacent landing or shall end one normal step underneath, see figure 1, variation 2. In compensation, the vertical distance between the upp
35、er edge of the lowest step and the floor, dimension c, may differ from the selected space between steps a by + 10 mm. Steps shall be fixed in the horizontal plane. 4.4 Deviation for stairs for a height difference below 1 ,O m As a deviation from the information given in table 1, the space between st
36、eps can be a = 2302; for stairs with a height difference below 1 ,O m. 4.5 Landingdplatforms adjacent to stairs O In front of stairs, there shall be a tread of at least 800 mm depth and at least the same width as the stair. Platforms adjacent to stairs shall have railings as specified in EN 71 1 at
37、the sides of the area used as a walkway. Coamings shall be scalloped at platforms or adjacent landings in the walkway up to the height of the adjacent step. 4.6 Safety of treads Steps and platforms shall have a non-slip surface. They shall be designed in such a way that they can be easily cleaned an
38、d that water cannot accumulate. The front edge of steps shall be designed so that slipping and stumbling will be prevented. 4.7 Hand railsrailings Stairs with up to three steps shall have a handhold at one side instead of a railing. Stairs with more than three steps shall be provided with railings o
39、r hand rails at both sides. Railings of stairs with an inclination angle aup to 55“ shall have an intermediate rail at half the railing height. o Hand rails or railings shall be continuous over the full length of the stairway At their upper ends they shall be suitably connected to structures or othe
40、r continuous railings. At their lower ends hand rails and railings shall extend to the vertical above the outermost point of the string. Hand rails shall be designed in such a way that their connectors do not hinder the continuous movement of the hands. Their distance g from adjacent structures shal
41、l be at least 60 mm; their ends shall be arranged to prevent injuries and to avoid damage to clothes. 4.8 Headroom The headroom kshall be at least 2100 mm. 4.9 Strength o Stairs shall be permanently installed. Steps shall be designed for a single load of at least 1,5 kN. If the expected load of 5 kN
42、/m2 leads to greater values, - these shall be the basis for calculation. Page 9 EN 790:2001 The fixed stairs shall withstand a load which corresponds to 50 % of the total of the step loads without producing For treads and platforms adjacent to stairs, a load (imposed load) of 5 kN/m2 shall be assume
43、d. Hand rails and intermediate rails shall be capable of withstanding a load of 500 N at any point without permanent deformation and shall not be deflected more than 20 mm. 4.10 Fire resistance Stairs shall be made of non-combustible material, e.g. steel. e permanent deformation. 5 Manufacturers dec
44、laration The manufacturer has to declare that the stair is constructed conforming to this standard. 6 Designation Stairs shall be designated in accordance with the following details: e Description “Stair“ Standard main number “EN 790“ Inclination angle 6: in degrees Stair breadth fi, in millimetres
45、Number of steps n Space between steps a, in millimetres EXAMPLE: Stair EN790 - 45 - 1 O00 - 12 - 200 BS EN 790:2001 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution 3SI is the independent national body responsible for preparing e 3ritish Standards. It presents the UK view
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