{"id":361704,"date":"2024-10-20T01:37:13","date_gmt":"2024-10-20T01:37:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-12215-72020\/"},"modified":"2024-10-26T02:31:04","modified_gmt":"2024-10-26T02:31:04","slug":"bs-en-iso-12215-72020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-12215-72020\/","title":{"rendered":"BS EN ISO 12215-7:2020"},"content":{"rendered":"

This document defines the dimensions, local design pressures and global loads acting on multihull craft with a hull length (L<\/i>H<\/sub>) or load line length of up to 24 m (see Note). It considers all parts of the craft that are assumed watertight or weathertight when assessing stability, freeboard and buoyancy in accordance with ISO 12217<\/span><\/span> (all parts). Scantlings corresponding to the local design pressures are then assessed using ISO 12215-5<\/span><\/span>.<\/p>\n

\n
\n NOTE\n <\/div>\n

The load line length is defined in the OMI “International Load Lines Convention 1966\/2005”, it can be smaller than L<\/i> H<\/sub> for craft with overhangs. This length also sets up at 24 m the lower limit of several IMO conventions.<\/p>\n<\/div>\n

This document is applicable to multihulls built from the same materials as in ISO 12215-5<\/span><\/span>, in intact condition, and of the two following types:<\/p>\n

    \n
  • \n

    recreational craft, including recreational charter vessels;<\/p>\n<\/li>\n

  • \n

    commercial craft and workboats.<\/p>\n<\/li>\n<\/ul>\n

    It is not applicable to multihull racing craft designed only for professional racing.<\/p>\n

    This document is applicable to the structures supporting windows, portlights, hatches, deadlights and doors.<\/p>\n

    For the complete scantlings of the craft, this document is intended to be used in conjunction with ISO 12215-8<\/span><\/span> for rudders, ISO 12215-9<\/span><\/span> for appendages of sailing craft and ISO 12215-10<\/span><\/span> for rig loads and rig attachment in sailing craft. ISO 12215-6<\/span><\/span> can be used for additional details.<\/p>\n

    Throughout this document, unless otherwise specified, dimensions are in (m), areas in (m2<\/sup>), masses in (kg), forces in (N), moments in (Nm), Pressures in (kN\/m2<\/sup>) (1 kN\/m2<\/sup> = 1 kPa), stresses and elastic modulus in (N\/mm2<\/sup>) (1 N\/mm2<\/sup> = 1 MPa).<\/p>\n

    PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
    2<\/td>\nundefined <\/td>\n<\/tr>\n
    4<\/td>\nEuropean foreword
    Endorsement notice <\/td>\n<\/tr>\n
    7<\/td>\nForeword <\/td>\n<\/tr>\n
    8<\/td>\nIntroduction <\/td>\n<\/tr>\n
    9<\/td>\n1 Scope
    2 Normative references <\/td>\n<\/tr>\n
    10<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
    12<\/td>\n4 Symbols <\/td>\n<\/tr>\n
    14<\/td>\n5 Application of this document
    5.1 Materials
    5.2 Limitations <\/td>\n<\/tr>\n
    15<\/td>\n5.3 Overall procedure for the application of this document
    6 Main dimensions, data and areas
    6.1 Dimensions and data
    6.1.1 General
    6.1.2 Bottom deadrise of the hulls \u03b2x and chine beam BCx of planing multihulls <\/td>\n<\/tr>\n
    16<\/td>\n6.1.3 Wet deck bottom
    6.1.4 Crossbeams <\/td>\n<\/tr>\n
    19<\/td>\n6.2 Areas <\/td>\n<\/tr>\n
    22<\/td>\n7 Dimensions and pressure for panels and stiffeners under local loads
    7.1 General
    7.2 Example of application on multihulls
    7.2.1 Sections <\/td>\n<\/tr>\n
    24<\/td>\n7.2.2 Details on panel assessment and dimensions
    7.2.3 The constant averaged pressure method <\/td>\n<\/tr>\n
    25<\/td>\n7.2.4 Other assessment and dimensioning methods
    7.2.5 Panels acting as “natural” stiffeners
    7.3 Other topics on panel or stiffener dimensions
    8 Local pressure-adjusting factors <\/td>\n<\/tr>\n
    32<\/td>\n9 Local design pressures
    9.1 General
    9.2 Limits of areas
    9.3 Tables defining the local design pressures for multihulls <\/td>\n<\/tr>\n
    35<\/td>\n9.4 Design pressure for trimaran floats PTRFx
    9.4.1 Pressure reduction factors
    9.4.2 Pressure
    9.5 Design pressure on watertight bulkheads and integral tanks
    10 Further treatment of structural elements subject to local loads <\/td>\n<\/tr>\n
    36<\/td>\n11 Assessment of multihulls rudders, appendages and their wells
    12 Multihull global loads
    12.1 General
    12.2 Typical structural arrangements <\/td>\n<\/tr>\n
    38<\/td>\n12.3 Global load assessment
    12.3.1 General
    12.3.2 The simplified method <\/td>\n<\/tr>\n
    39<\/td>\n12.3.3 The enhanced method <\/td>\n<\/tr>\n
    40<\/td>\n12.4 Design stresses under global loads
    12.5 Global load case GLC1: Diagonal load in quartering sea <\/td>\n<\/tr>\n
    41<\/td>\n12.6 Global load case GLC 2: Rig loads
    12.7 Combination of diagonal load GLC 1 and rig load GLC 2 for sailing multihulls
    12.8 Global load case GLC 3: Asymmetric broaching loads in sailing multihulls <\/td>\n<\/tr>\n
    42<\/td>\n12.9 Global load case GLC 4: Longitudinal broaching\/pitchpoling
    12.9.1 General <\/td>\n<\/tr>\n
    43<\/td>\n12.9.2 Full method of analysis of the buoyancy load when the craft pitchpoles <\/td>\n<\/tr>\n
    44<\/td>\n12.10 Global load case GLC 5: Longitudinal force on one hull
    12.10.1 General
    12.10.2 Longitudinal force <\/td>\n<\/tr>\n
    45<\/td>\n12.11 Global load case GLC 6: Bending of crossbeams connecting hulls for motor catamarans. <\/td>\n<\/tr>\n
    46<\/td>\n13 Structural arrangement for supporting global loads
    14 Multihulls used as commercial craft and workboats
    15 Information to be included in the owner’s manual
    15.1 General
    15.2 Respect of maximum loaded displacement
    15.3 Operational guidance
    15.4 Information to take care of sandwich plating
    15.5 Information required by Annex J of ISO 12215-5:2019 – for commercial craft and workboat <\/td>\n<\/tr>\n
    47<\/td>\nAnnex A (informative) Application sheet of ISO 12215-7 <\/td>\n<\/tr>\n
    49<\/td>\nAnnex B (informative) “Established practice” recommendations for global loads assessment using FEM methods and reporting <\/td>\n<\/tr>\n
    51<\/td>\nAnnex C (informative) “Established practice” details <\/td>\n<\/tr>\n
    59<\/td>\nAnnex D (informative) Technical background and example of torsional moment analysis with differential deflection of crossbeams <\/td>\n<\/tr>\n
    66<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Small craft. Hull construction and scantlings – Determination of loads for multihulls and of their local scantlings using ISO 12215-5<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2020<\/td>\n68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":361714,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-361704","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/361704","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/361714"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=361704"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=361704"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=361704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}