BS ISO 5480:2020 pdf free.Ships and marine technology一Guardrails for cargo ships.
BS ISO 5480 This document specifies dimensions, materials, quality of manufacture and finish for guardrails and stanchions fitted on exposed freeboard and superstructure decks of cargo ships to prevent personnel falling overboard or to lower decks. It is not applicable to guardrails fitted near compasses.The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1 ISO 887 Plain washers for metric bolts, screws and nuts for general purposes一General plan ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel 一Part 1: Bolts, screws and studs with specified property classes一Coarse thread and fine pitch thread ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles – – Specifications and test methods ;5.4.1 Stays shall be made of flat bars of 60 mm x 9 mm, or of flat bars having a section modulus at least equal to that of 60 mm x 9 mm flat bars. 5.4.2 The size and/or section modulus of the stays may be reduced if the sum of the section modulus of the actual stanchions and stays at onboard, by using the calculation method given in Annex A, is greater than the sum of the section modulus specified in 5.2 and 5.4.1.
5.4.3 A stay is not needed on every stanchion and shall be fitted depending on the length of the guardrail and the shipboard conditions.5.4.4 The stay shall be welded to stanchions at about mid-height and under an angle of approximately 30°. 5.5 Fairlead positions Typical arrangements of guardrails at fairlead positions are shown in Figure 4 for guidance.6 Quality of manufacture and finish 6.1 Guardrails and stanchions shall be free from any defects and imperfections likely to cause injury to persons using them. 6.2 The rails, stanchions and stays shall be given protective finishes appropriate to their material and to their shipboard location. If galvanizing is applied, it shall be carried out in accordance with ISO 1461.BS ISO 5480 pdf download.