BS ISO 5488 pdf free download

BS ISO 5488-2015 pdf free download.Ships and marine technology — Accommodation ladders.
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 1
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).
4.1.2 For a multi-flight ladder, the sum of the lengths L 3 and L 4 of the separate flights measured from the centre of the top pin to the centre of the lower pin in each case (see Figure 2)
4.1.3 For a telescopic ladder, the maximum length is the sum of the lengths L 3 and L 4 minus overlap 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 0 , is the sum of L 3 and l 1 (see Figure 4).
4.2 Design length, L 2
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.
5 Dimensions
5.1 Nominal length, L 1
The range of nominal lengths shall be as follows:
— 3,6 m to 18 m in 0,6 m increments;
— above 18 m in 0,7 m increments.
5.2 Width, b
The width of all accommodation ladders shall be 600 mm.BS ISO 5488 pdf download.