{"id":218934,"date":"2024-10-19T14:12:21","date_gmt":"2024-10-19T14:12:21","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-6688-1-42015\/"},"modified":"2024-10-25T07:29:14","modified_gmt":"2024-10-25T07:29:14","slug":"bsi-pd-6688-1-42015","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-6688-1-42015\/","title":{"rendered":"BSI PD 6688-1-4:2015"},"content":{"rendered":"

This Published Document is a background paper that gives non-contradictory complementary information for use in the UK with BS EN 1991\u20111\u20114:2005<\/span> <\/span> and its UK National Annex.<\/p>\n

This Published Document gives:<\/p>\n

    \n
  1. \n

    background to the decisions made in the National Annexes for some of the Nationally Determined Parameters;<\/p>\n<\/li>\n

  2. \n

    commentary on some specific subclauses from BS EN 1991\u20111\u20114:2005<\/span> <\/span>; and<\/p>\n<\/li>\n

  3. \n

    additional data that can be used in conjunction with BS EN 1991\u20111\u20114:2005<\/span> <\/span>.<\/p>\n<\/li>\n<\/ol>\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\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
    5<\/td>\n\t\tForeword <\/td>\n<\/tr>\n
    7<\/td>\n\t\tIntroduction
    \t1\tScope
    \t2\tUK National Annex to BS EN 1991-1-4:2005 <\/td>\n<\/tr>\n
    8<\/td>\n\tFigure 1\tAn example of altitude correction factors <\/td>\n<\/tr>\n
    10<\/td>\nFigure 2\u2003Hill parameters in undulating terrain <\/td>\n<\/tr>\n
    17<\/td>\n\t3\tData that can be used in conjunction with BS EN 1991-1-4:2005 <\/td>\n<\/tr>\n
    18<\/td>\nFigure 3\u2003Typical examples of buildings with re-entrant corners and recessed bays <\/td>\n<\/tr>\n
    19<\/td>\nFigure 4\u2003Examples of flush irregular walls <\/td>\n<\/tr>\n
    20<\/td>\nFigure 5\u2003Keys for walls of inset storey <\/td>\n<\/tr>\n
    21<\/td>\n\tFigure 6\tKey for inset storey
    \tFigure 7\tKey to canopies attached to buildings
    Table 1\u2003Global vertical force coefficients for canopies attached to tall buildings <\/td>\n<\/tr>\n
    22<\/td>\nTable 2\u2003Internal pressure coefficients cpi for open-sided buildings
    \tTable 3\tInternal pressure coefficients cpi for open-topped vertical cylinders <\/td>\n<\/tr>\n
    23<\/td>\nFigure 8\u2003Wind directions for a rectangular plan building <\/td>\n<\/tr>\n
    25<\/td>\nFigure 9\u2003Key for vertical walls of buildings
    Figure 10\u2003Definitions of crosswind breadth and in wind depth
    Table 4\u2003External pressure coefficients Cpe for vertical walls of rectangular-plan buildings <\/td>\n<\/tr>\n
    26<\/td>\n\tTable 5\tReduction factors for zone A on vertical walls of polygonal\u2011plan buildings <\/td>\n<\/tr>\n
    27<\/td>\n\tAnnex A (informative)\tVortex shedding and aeroelastic instabilities <\/td>\n<\/tr>\n
    30<\/td>\nTable A.1\u2003Strouhal numbers St for different cross-sections <\/td>\n<\/tr>\n
    31<\/td>\nFigure A.1\u2003Strouhal number St for rectangular cross-sections with sharp corners
    Figure A.2\u2003Strouhal number St for bridge decks <\/td>\n<\/tr>\n
    33<\/td>\nFigure A.3\u2003Bridge types and reference dimensions <\/td>\n<\/tr>\n
    34<\/td>\nFigure A.4\u2003Bridge deck details <\/td>\n<\/tr>\n
    37<\/td>\nTable A.2\u2003Basic value of the lateral force coefficient clat,0 for different cross-sections <\/td>\n<\/tr>\n
    38<\/td>\nFigure A.5\u2003Basic value of the lateral force coefficient clat,0 versus Reynolds number Re(vcrit,i)
    \tTable A.3\tLateral force coefficient clat versus critical wind velocity ratio vcrit,i\/vm,Lj <\/td>\n<\/tr>\n
    39<\/td>\nFigure A.6\u2003Examples for application of the correlation length Lj (j = 1, 2, 3) <\/td>\n<\/tr>\n
    40<\/td>\n\tTable A.4\tEffective correlation length Lj as a function of vibration amplitude\u00a0yF(sj) <\/td>\n<\/tr>\n
    41<\/td>\nTable A.5\u2003Correlation length factor KW and mode shape factor K for some simple structures <\/td>\n<\/tr>\n
    43<\/td>\nFigure A.7\u2003In-line and grouped arrangements of cylinders <\/td>\n<\/tr>\n
    45<\/td>\nTable A.6\u2003Constants for determination of the effect of vortex shedding <\/td>\n<\/tr>\n
    48<\/td>\nTable A.7\u2003Assessment of vortex excitation effects <\/td>\n<\/tr>\n
    50<\/td>\nTable A.8\u2003Factor of galloping instability aG <\/td>\n<\/tr>\n
    51<\/td>\nTable A.9\u2003\ufffdData for the estimation of crosswind response of coupled cylinders at in-line and grouped\u00a0arrangements <\/td>\n<\/tr>\n
    54<\/td>\n\tFigure A.8\tGeometric parameters for interference galloping <\/td>\n<\/tr>\n
    55<\/td>\nFigure A.9\u2003\ufffdRate of change of aerodynamic moment coefficient dcM\/d\u03b8 with respect to geometric centre \u201cGC\u201d for rectangular section <\/td>\n<\/tr>\n
    58<\/td>\n\tAnnex B (informative)\tAlong-wind response of lattice towers <\/td>\n<\/tr>\n
    60<\/td>\nFigure\u00a0B.1\u2003Gust peak factor (Davenport\u2019s g)
    Table\u00a0B.1\u2003\ufffdLength scale zLu for a single roughness change from sea to country terrain, for an upwind fetch from site to sea of x(km) <\/td>\n<\/tr>\n
    62<\/td>\nFigure\u00a0B.2\u2003Definition of fetch for two roughness changes
    Table\u00a0B.2\u2003Length scale for zLu for two roughness changes where x1\u00a0=\u00a00,1 km for an upwind fetch of x km <\/td>\n<\/tr>\n
    63<\/td>\nTable\u00a0B.3\u2003Length scale for zLu for two roughness changes where x1\u00a0=\u00a00,3\u00a0km for an upwind fetch of x km
    Table\u00a0B.4\u2003Length scale for zLu for two roughness changes where x1\u00a0=\u00a01\u00a0km for an upwind fetch of x km <\/td>\n<\/tr>\n
    64<\/td>\nTable\u00a0B.5\u2003Length scale for zLu for two roughness changes where x1\u00a0=\u00a03\u00a0km for an upwind fetch of x km
    Table\u00a0B.6\u2003Length scale for zLu for two roughness changes where x1\u00a0=\u00a010\u00a0km for an upwind fetch of x km <\/td>\n<\/tr>\n
    65<\/td>\nTable\u00a0B.7\u2003Length scale for zLu for two roughness changes where x1\u00a0=\u00a030\u00a0km for an upwind fetch of x km <\/td>\n<\/tr>\n
    66<\/td>\nFigure\u00a0B.3\u2003Fictitious square lattice tower with\u00a012\u00a0panels <\/td>\n<\/tr>\n
    67<\/td>\nTable\u00a0B.8\u2003Meteorological parameters <\/td>\n<\/tr>\n
    68<\/td>\nTable\u00a0B.9\u2003Non\u2011dimensional coefficients, wind forces and wind moments <\/td>\n<\/tr>\n
    69<\/td>\nTable\u00a0B.10\u2003Values of c(z) c(z\u2019) <\/td>\n<\/tr>\n
    70<\/td>\nTable\u00a0B.11\u2003Values of C(z\u2011z\u2019)
    Table\u00a0B.12\u2003Values of c(z)\u00a0c(z\u2019)\u00a0C(z\u2011z\u2019) <\/td>\n<\/tr>\n
    72<\/td>\n\tTable\u00a0B.13\tNon\u2011dimensional coefficients and wind forces <\/td>\n<\/tr>\n
    73<\/td>\nTable\u00a0B.14\u2003Values of c(z)\u00a0c(z\u2019)
    Table\u00a0B.15\u2003Values of c(z)\u00a0c(z\u2019)\u00a0C(z\u2011z\u2019) <\/td>\n<\/tr>\n
    74<\/td>\nTable\u00a0B.16\u2003Non\u2011dimensional coefficients, wind forces and moments <\/td>\n<\/tr>\n
    76<\/td>\nTable\u00a0B.17\u2003Values of c(z)\u00a0c(z\u2019) <\/td>\n<\/tr>\n
    77<\/td>\nTable\u00a0B.18\u2003Values of C(z\u2011z\u2019)
    Table\u00a0B.19\u2003Values of c(z)\u00a0c(z\u2019)\u00a0C(z\u2011z\u2019) <\/td>\n<\/tr>\n
    79<\/td>\n\tTable\u00a0B.20\tNon\u2011dimensional coefficients and wind forces <\/td>\n<\/tr>\n
    80<\/td>\nTable\u00a0B.21\u2003Values of c(z)\u00a0c(z\u2019)
    Table\u00a0B.22\u2003Values of c(z)\u00a0c(z\u2019)\u00a0C(z\u2011z\u2019) <\/td>\n<\/tr>\n
    82<\/td>\n\tTable\u00a0B.23\tNon\u2011dimensional coefficients and wind forces <\/td>\n<\/tr>\n
    83<\/td>\nFigure\u00a0B.4\u2003Illustration of parameters for shear patch loading <\/td>\n<\/tr>\n
    84<\/td>\nTable\u00a0B.24\u2003Lever arms, wind loads and moments above zip
    Table B.25\u2003Lever arms, wind loads and moments below zip <\/td>\n<\/tr>\n
    86<\/td>\nTable\u00a0B.26\u2003Values of c(z)\u00a0c(z\u2019) <\/td>\n<\/tr>\n
    87<\/td>\nTable\u00a0B.27\u2003Valuesof C(z\u2011z\u2019)
    Table\u00a0B.28\u2003Values of c(z)\u00a0c(z\u2019)\u00a0C(z\u2011z\u2019) <\/td>\n<\/tr>\n
    89<\/td>\nTable\u00a0B.29\u2003Meteorological parameters
    Table\u00a0B.30\u2003Non\u2011dimensional coefficients, wind forces and wind moments <\/td>\n<\/tr>\n
    91<\/td>\nTable\u00a0B.31\u2003Values of c(z)\u00a0c(z\u2019) <\/td>\n<\/tr>\n
    92<\/td>\nTable\u00a0B.32\u2003Values of C(z\u2011z\u2019)
    Table\u00a0B.33\u2003Values of c(z)\u00a0c(z\u2019)\u00a0C(z\u2011z\u2019) <\/td>\n<\/tr>\n
    94<\/td>\n\tTable\u00a0B.34\tLarge ancillary wind resistance <\/td>\n<\/tr>\n
    96<\/td>\n\t\tBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Background information to the National Annex to BS EN 1991-1-4 and additional guidance<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2015<\/td>\n102<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":218937,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1225,2641],"product_tag":[],"class_list":{"0":"post-218934","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-010-30","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/218934","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\/218937"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=218934"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=218934"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=218934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}