1、BRITISH STANDARD BS EN 790:2001 Inland navigation vessels Stairs with inclination angles of 45 to 60 Requirements, types The European Standard EN 790:2001 has the status of a British Standard ICS 47.020.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 790:2001 This Brit
2、ish Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 BSI 08-2001 ISBN 0 580 38085 8 National foreword This British Standard is the official English language
3、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 It supersedes BS EN 790:1995 which is withdrawn.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 committee, to Subcommittee SME/32/7, Inland navigation vessels, which has the responsibility to: A list o
4、f 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 found in the BSI Standards Catalogue under the section entitled “Internation
5、al 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 Standards are responsible for their correct application. Compliance with a Britis
6、h Standard does not of itself confer immunity from legal obligations. 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 international and European devel
7、opments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, 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 publication A
8、md. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN790 June2001 ICS47.020.10;47.060 SupersedesEN790:1994 Englishversion InlandnavigationvesselsStairswithinclinationanglesof45 to60Requirements,types BateauxdenavigationintrieureEscaliersangles dinclinaisonentre45et60Exigences,types
9、FahrzeugederBinnenschiffahrtTreppenmit Steigungswinkelnvon45bis60Anforderungen, Bauarten ThisEuropeanStandardwasapprovedbyCENon8March2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyal
10、teration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmember
11、intoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingd
12、om. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN790:2001EPage 2 EN 790:2001 Contents Page Foreword 3 1
13、 Scope. 4 2 Normative references 4 3 Terms and definitions . 4 4 Safety requirements 5 4.1 Design 5 4.2 Dimensions 6 4.3 Space between steps 8 4.4 Deviation for stairs for a height difference below 1,0 m 8 4.5 Landings/platforms adjacent to stairs 8 4.6 Safety of treads . 8 4.7 Hand rails/railings .
14、 8 4.8 Headroom 8 4.9 Strength . 8 4.10 Fire resistance. 9 5 Manufacturers declaration . 9 6 Designation 9Page3 EN790:2001 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC15“Inlandnavigationvessels“,the secretariatofwhichisheldbyDIN. ThisEuropeanStandardsupersedesEN790:1994. Th
15、isEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyNovember2001,andconflictingnationalstandardsshallbewithdrawnby November2001. ThestandardspecifiesrequirementsforstairswithinthemeaningofCouncilDirective82/714/EECof4October 19
16、82layingdowntechnicalrequirementsforinlandwaterwayvessels. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembou
17、rg,Netherlands,Norway,Portugal,Spain,Sweden, SwitzerlandandtheUnitedKingdom.Page 4 EN 790:2001 1 Scope This European Standard applies to stairs with inclination angles of 45 to 60,h a v i n ga tl e a s tt w os t e p s ,i nw o r k i n g areas of inland navigation vessels. It does not apply to stairs
18、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 normative references are cited at the appropriate places in the text and
19、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 references the latest edition of the publication referred to applies (inc
20、luding amendments). EN 711, 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 (Identical to ISO 2768-1:1989) EN 13056:2000, Inland navigation vessels Stairs wi
21、th inclination angles of 30 to 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 two planes EN 13056:2000, 3.1 3.2 inclination angle angle between the pitch line con
22、necting the front edge of the steps and the horizontal line EN 13056:2000, 3.2 3.3 stair breadth clear breadth of the stair measured between the strings EN 13056:2000, 3.3 3.4 headroom perpendicular distance between the pitch line connecting the front edges of the steps and the fixed components abov
23、e them 3.5 step tread of the stair EN 13056:2000, 3.5Page 5 EN 790:2001 3.6 space between steps vertical distance between the upper edges of successive steps EN 13056:2000, 3.6 3.7 depth of steps distance between the front and rear edges of the steps measured on the tread EN 13056:2000, 3.7 3.8 stri
24、ng lateral limitation of the stair supporting the steps EN 13056:2000, 3.8 3.9 railing construction of stanchions, hand rail and intermediate rails or network EN 13056:2000, 3.9 3.10 height of railing perpendicular distance between the pitch line connecting the front edges of the steps and the upper
25、 edge of the hand rail 3.11 hand rail 3.11.1 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 the railing EN 13056:2000, 3.11.1 3.11.2 round secton which is fixed at a bulkhead adjac
26、ent to the stair, running in parallel to the stairway and serving as a handhold EN 13056:2000, 3.11.2 3.12 stanchion part of the railing connecting hand rail and intermediate rail, if any, to the string EN 13056:2000, 3.12 3.13 intermediate rail continuous part fixed between hand rail and string ser
27、ving 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 have to correspond to figure 1.Page 6 EN 790:2001 4.2 Dimensions General tolerances: ISO 2768 -
28、c conforming to EN 22768-1 Stairs, railings, platforms as well as free space in front of and above the stairs shall conform to to specifications given in tables 1 and 2. Table 1 Stair dimensions and their explanation Dimensions in millimetres Symbol Explanation Dimensions Inclination angle of the st
29、air see table 2 A Space between steps see table 2, 4.3 and 4.4 B Dep tho fs te ps s eetab le2 C Vertical distance between the upper edge of the lowest step and the floor a 10 30 + E Vertical distance between the upper rear edge of the highest step and the front edge of the upper landing 30 f 1 Stair
30、 breadth between the strings 600 f 2 Clear width between railings or hand rails 600 G Distance between hand rail and fixed components 60 h Height of railing 50 0 900 + i Vertical distance between the centre lines of hand rail and intermediate rail h/2 j Distance between stanchions, measured at the h
31、and rail 1 500 k Headroom 2 100 n Number of steps Tabee 2 Dimensions ,aund b Dimensions in millimetres Dimensions Stairs for outside area and general use Stairs for machine and boiler rooms a )4 5 50 55 60 a b ) 200 30 0 + 200 20 10 + 200 200 0 30 b 230 200 175 150 a ) Intermediate values of are per
32、missible, the associated values of a and b are to be interpolated. b ) see 4.4Page 7 EN 790:2001 Stair with 45 inclination angle is illustrated Dimensions in millimetres Legend 1 Step on upper landing 2 Step one step spacing a lower than upper landing Figure 1 Illustration of stair with 45 inclinati
33、on anglePage 8 EN 790:2001 4.3 Space between steps The selected space between steps a shall be kept for all steps of a stair. The value of a for two successive steps shall not differ by more than 2 mm. The uppermost step of a stair shall be at the same horizontal level as the adjacent landing or sha
34、ll end one normal step underneath, see figure 1, variation 2. In compensation, the vertical distance between the upper 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 st
35、airs for a height difference below 1,0 m As a deviation from the information given in table 1, the space between steps can be a = 40 30 230 + for stairs with a height difference below 1,0 m. 4.5 Landings/platforms adjacent to stairs In front of stairs, there shall be a tread of at least 800 mm depth
36、 and at least the same width as the stair. Platforms adjacent to stairs shall have railings as specified in EN 711 at 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 Step
37、s and platforms shall have a non-slip surface. They shall be designed in such a way that they can be easily cleaned and that water cannot accumulate. The front edge of steps shall be designed so that slipping and stumbling will be prevented. 4.7 Hand rails/railings Stairs with up to three steps shal
38、l have a handhold at one side instead of a railing. Stairs with more than three steps shall be provided with railings or hand rails at both sides. Railings of stairs with an inclination angle up to 55 shall have an intermediate rail at half the railing height. Hand rails or railings shall be continu
39、ous over the full length of the stairway At their upper ends they shall be suitably connected to structures or other 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
40、their connectors do not hinder the continuous movement of the hands. Their distance g from adjacent structures shall be at least 60 mm; their ends shall be arranged to prevent injuries and to avoid damage to clothes. 4.8 Headroom The headroom k shall be at least 2100 mm. 4.9 Strength Stairs shall be
41、 permanently installed. Steps shall be designed for a single load of at least 1,5 kN. If the expected load of 5 kN/m 2 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
42、 without producing permanent deformation. For treads and platforms adjacent to stairs, a load (imposed load) of 5 kN/m 2 shall be assumed. 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 tha
43、n 20 mm. 4.10 Fire resistance Stairs shall be made of non-combustible material, e.g. steel. 5 Manufacturers declaration 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: a) Des
44、cription “Stair“ b) Standard main number “EN 790“ c) Inclination angle , in degrees d) Stair breadth f 1 , in millimetres e) Number of steps n f) Space between steps a, in millimetres EXAMPLE: Stair EN 790 45 1 000 12 200BS EN 790:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards I
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