SIST EN 790:2002

Inland navigation vessels - Stairs with inclination angles of 45° to 60° - Requirements, types

1 Scope
This European Standard applies to stairs with inclination angles of 45° to 60°, having at least two steps, in working 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.

Fahrzeuge der Binnenschiffahrt - Treppen mit Steigungswinkeln von 45° bis 60° - Anforderungen, Bauarten

1 Anwendungsbereich
Diese Europäische Norm gilt für Treppen mit Steigungswinkeln von 45° bis 60° und mindestens zwei Stufen in Arbeitsbereichen auf Fahrzeugen der Binnenschif-ffahrt.
Sie gilt nicht für Treppen in Fahrgastbereichen.
ANMERKUNG  Wenn immer möglich, sollten Treppen nach EN 13056 bevorzugt werden.

Bateaux de navigation intérieure - Escaliers a angles d'inclinaison entre 45° et 60° - Exigences, types

Cette norme européenne s'applique aux escaliers à angles d'inclinaison entre 45° et 60° et à au moins deux marches installés dans les zones de travail des bateaux de navigation intérieure. Elle ne s'applique pas aux escaliers prévus dans les parties de bateaux accessibles aux passagers. Pour les escaliers dans la zone extérieure, des angles d'inclinaison jusqu'à 55°, pour les escaliers dans la machinerie et les chambres de chauffe, des angles d'inclinaison jusqu'à 60° sont admissibles. NOTE:Dans la mesure du possible, il faudrait donner la préférence aux escaliers selon l'EN 13056.

Inland navigation vessels - Stairs with inclination angles of 45o to 60o - Requirements, types

General Information

• Status: Published
• Publication Date: 31-Dec-2001
• ICS: 47.020.10 - Hulls and their structure elements
• ICS: 47.060 - Inland navigation vessels
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2002
• Due Date: 01-Jan-2002
• Completion Date: 01-Jan-2002
• Ref Project: EN 790:2001 - Inland navigation vessels - Stairs with inclination angles of 45° to 60° - Requirements, types

Relations

• Replaces: SIST EN 790:2000 - Inland navigation vessels - Stairs with inclination angles of 45° to 60° - Requirements, types
• Effective Date: 01-Jan-2002

Overview

SIST EN 790:2002 is a European Standard developed by CEN that specifies requirements and types for stairs with inclination angles between 45° and 60° used in the working areas of inland navigation vessels. This standard ensures that stairs installed on such vessels meet stringent safety, dimensional, and construction criteria tailored for the maritime environment in inland waterways. It excludes stairs used in passenger areas and recommends preferring stairs defined in EN 13056 where possible.

SIST EN 790:2002 supersedes the previous version EN 790:1994 and aligns with the Council Directive 82/714/EEC, establishing technical standards for inland waterway vessels across multiple European countries.

Key Topics

• Scope and Application
  Applies exclusively to stairs with at least two steps and inclination angles from 45° to 60° in working zones of inland vessels-not passenger zones.

• Design and Dimensions
  Specifies strict dimensional criteria including stair breadth, step depth, space between steps, headroom, and railing heights.

  • Inclination angles: 45°–60°
  • Minimum stair width: 600 mm
  • Headroom: ≥ 2100 mm
  • Step spacing consistency ± 2 mm
  • Platforms adjacent to stairs must have minimum 800 mm depth and protective railings

• Safety Requirements
  Emphasizes non-slip surfaces on steps, safe stair edges to prevent slipping or stumbling, permanent installation, and strength to withstand load conditions specific to inland vessels.

  • Steps designed for 1.5 kN load minimum
  • Platforms and treadings for 5 kN/m imposed load
  • Handrails capable of resisting 500 N load without permanent deformation
  • Fire resistance mandatory-stairs must be built from non-combustible materials like steel

• Handrails and Railings

  • Stairs with up to 3 steps require handrails on one side.
  • More than 3 steps require railings on both sides, including intermediate rails for angles up to 55°.
  • Handrails must be continuous, smooth, and spaced at least 60 mm from adjacent structures.

• Manufacturer Declarations and Designation
  Manufacturers must certify conformance with the standard. The standard also provides a clear designation format that includes stair angle, breadth, number of steps, and step spacing (e.g., Stair EN 790 – 45 – 1000 – 12 – 200).

Applications

SIST EN 790:2002 is crucial for stakeholders involved in the design, construction, and certification of inland navigation vessels including shipbuilders, vessel owners, maritime safety inspectors, and regulatory bodies. Its practical applications include:

• Shipbuilding: Ensuring safe access and egress within engine rooms, workshops, and work areas of barges, cargo vessels, and towboats.
• Maintenance: Providing guidelines for retrofitting or repairing stairs to meet current safety regulations.
• Safety Compliance: Assisting maritime authorities in enforcing standardized stair safety, minimizing slip and fall risks onboard.
• Fire Safety: Promoting the use of non-combustible materials, critical in enclosed vessel compartments.

This standard enhances the overall safety and usability of stairs in confined and operational areas on inland waterway vessels-supporting crew welfare and operational efficiency.

Related Standards

• EN 13056: Specifies requirements for stairs with inclination angles between 30° and less than 45° for inland navigation vessels and is recommended where applicable.
• EN 711: Defines requirements and types for railings on inland navigation vessels’ decks.
• EN 22768-1 (ISO 2768-1:1989): Covers general dimensional tolerances for linear and angular measurements used in manufacturing these stairs.

By aligning with related standards, SIST EN 790:2002 integrates into a broader framework of maritime safety and construction standards, ensuring uniformity across inland waterway vessels in Europe.

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For designers, manufacturers, and regulators involved with inland navigation vessel construction, SIST EN 790:2002 is an essential reference to ensure safe, durable, and standardized staircase installations for occupational areas, promoting compliance with European maritime safety directives.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2002
1DGRPHãþD
SIST EN 790:2000
Inland navigation vessels - Stairs with inclination angles of 45o to 60o -
Requirements, types
Inland navigation vessels - Stairs with inclination angles of 45° to 60° - Requirements,
types
Fahrzeuge der Binnenschiffahrt - Treppen mit Steigungswinkeln von 45° bis 60° -
Anforderungen, Bauarten
Bateaux de navigation intérieure - Escaliers a angles d'inclinaison entre 45° et 60° -
Exigences, types
Ta slovenski standard je istoveten z: EN 790:2001
ICS:
47.020.10 Ladijski trupi in njihovi Hulls and their structure
konstrukcijski elementi elements
47.060 -H]HUVNDLQUHþQDSORYLOD Inland navigation vessels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 790
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2001
ICS 47.020.10; 47.060 Supersedes EN 790:1994
English version
Inland navigation vessels - Stairs with inclination angles of 45°
to 60° - Requirements, types
Bateaux de navigation intérieure - Escaliers à angles Fahrzeuge der Binnenschiffahrt - Treppen mit
d'inclinaison entre 45° et 60° - Exigences, types 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 CEN/CENELEC Internal Regulations 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 Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 790:2001 E
worldwide for CEN national Members.

Page 2
Contents
Page
Foreword . 3
1 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 . 8
4.8 Headroom . 8
4.9 Strength . 8
4.10 Fire resistance. 9
5 Manufacturer's declaration . 9
6 Designation. 9

Page 3
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 15 "Inland navigation vessels" , the
secretariat of which is held by DIN.
This European Standard supersedes EN 790:1994.
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 2001, and conflicting national standards shall be withdrawn by
November 2001.
The standard specifies requirements for stairs within the meaning of Council Directive 82/714/EEC of 4 October
1982 laying down technical requirements for inland waterway vessels.
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, Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and the United Kingdom.

Page 4
1 Scope
This European Standard applies to stairs with inclination angles of 45° to 60°, having atleasttwo steps, in working
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
normative 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 references the latest edition of the
publication referred to applies (including 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 – Stair
...