ISO 5488:2015

INTERNATIONAL ISO
STANDARD 5488
Second edition
2015-12-15
Ships and marine technology —
Accommodation ladders
Navires et technologie maritime — Échelles de coupée
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Types . 1
3.1 Revolving-platform ladder . 1
3.2 Fixed-platform ladder . 1
4 Definitions . 2
4.1 Nominal length, L .
1 2
4.2 Design length, L .
2 3
4.3 Width, b .3
4.4 Handrail height, a .3
5 Dimensions . 4
5.1 Nominal length, L .
1 4
5.2 Width, b .4
5.3 Distance between steps . 4
5.4 Handrail height, a .4
5.5 Distance between stanchions . 4
6 Manufacture . 4
6.1 Design . 4
6.1.1 Minimum angle of use . 4
6.1.2 Maximum angle of use . 4
6.1.3 Design loading . 5
6.1.4 Step design . 5
6.1.5 Design loading for access and intermediate platforms . 5
6.1.6 Design loading for handrail . 5
6.1.7 Support points . 5
6.1.8 Strength and design of the ladder frame . 5
6.1.9 Safety factor . 5
6.2 Materials . 5
6.3 Surface requirements . 6
7 Quality or manufacture . 6
8 Testing . 6
8.1 Procedure . 6
8.2 Measure . 6
9 Inspection . 7
10 Marking . 7
Bibliography . 8
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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The committee responsible for this document is ISO/TC 8, Ships and marine technology, Subcommittee
SC 1, Lifesaving and fire protection.
This second edition cancels and replaces the first edition (ISO 5488:1979), which has been
technically revised.
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 5488:2015(E)
Ships and marine technology — Accommodation ladders
1 Scope
This International Standard specifies requirements and the method of test for accommodation
ladders used on merchant ships (excluding passenger ships) to enable crew and pilots to embark and
disembark safely.
This International Standard is applicable to the design, manufacturing and testing of accommodation
ladders as well as accommodation ladder used specifically in combination with pilot ladder (hereinafter
referred as “pilot accommodation ladder”).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 209:2007, Aluminium and aluminium alloys — Chemical composition
ISO 630-1, Structural steels — Part 1: General technical delivery conditions for hot-rolled products
ISO 2408, Steel wire ropes for general purposes — Minimum requirements
IMO Resolution A.1045(27), Pilot transfer arrangements
3 Types
3.1 Revolving-platform ladder
The ladder, of single-flight, multi-flight or telescopic construction, is hinged from an upper revolving
platform and is capable of being varied in direction and inclination between the ship and the lower
access level.
The ladder may be supported by steel wire ropes or chains from the lower suspension point or by rollers
fixed to the bottom of the ladder (see Figure 1, Figure 2 and Figure 3).
3.2 Fixed-platform ladder
The ladder is hinged from a fixed anchorage and is capable of being varied in inclination between the
ship and the lower access level.
This ladder is supported by steel wire ropes or chains from suspension point(s) in the lower part
of the ladder (see Figure 1, Figure 2 and Figure 3). This ladder may be of single-flight or telescopic
construction.
This ladder is mainly applicable to pilot accommodation ladders.
4 Definitions
4.1 Nominal length, L
4.1.1 For a single-flight ladder, the distance from the centre of the top pin to the centre of the lower
platform holding pin (see Figure 1).
Key
1 intermediate suspension points
L nominal length
L design length
Figure 1 — Single-flight ladder
4.1.2 For a multi-flight ladder, the sum of the lengths L and L of the separate flights measured from
3 4
the centre of the top pin to the centre of the lower pin in each case (see Figure 2)
Key
1 intermediate suspension points
L nominal length, L = L + L
1 1 3 4
L design length, for each separate flight
Figure 2 — Multi-flight ladder
4.1.3 For a telescopic ladder, the maximum length is the sum of the lengths L and L minus overlap
3 4
length l, i.e. from the centre of the top pin of the upper flight to the centre of the lower platform holding
pin of the lower telescopic ladder (see Figure 3), the minimum retraction length, L , is the sum of L and
0 3
l (see Figure 4).
2 © ISO 2015 – All rights reserved
L
L2
L4 L3
L2 L2
Key
1 intermediate suspension points
NOTE 1 Nominal length: L .
NOTE 2 Maximum design telescopic: L = L + L - l.
2 3 4
Figure 3 — Telescopic ladder
L4
l1 L3
NOTE Minimum design retraction: L = L + l .
0 3 1.
Figure 4 — Retraction diagram of telescopic ladder
4.2 Design length, L
The maximum distance between supporting points for each separate flight (see Figure 1, Figure 2
and Figure 3).
4.3 Width, b
The effective width of the walking surface (see Figure 5).
4.4 Handrail height, a
The vertical height of the handrail, measured from the highest point of the standing surface presented
by the steps when the ladder is horizontal.
l
L3
L4
L1
L2
NOTE The sections shown are examples only.
Figure 5 — Minim
...