{"id":219254,"date":"2024-10-19T14:13:32","date_gmt":"2024-10-19T14:13:32","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-80812015a22018\/"},"modified":"2024-10-25T07:32:46","modified_gmt":"2024-10-25T07:32:46","slug":"bs-80812015a22018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-80812015a22018\/","title":{"rendered":"BS 8081:2015+A2:2018"},"content":{"rendered":"

This British Standard, as a code of practice, gives recommendations for the design, construction, stressing, testing, monitoring and maintenance of grouted anchors as defined in BS EN 1997\u20111:2004+A1:2013, BS EN 1537:2013 and BS EN ISO 22477\u20115.<\/p>\n

1.2<\/p>\n

Further general recommendations for corrosion hazards and protective measures, construction techniques and quality controls, stressing procedures, and the testing of grouted anchor components and complete installations are provided. Information supporting the practical implementation of these recommendations are provided in annexes to this code of practice.<\/p>\n

1.3<\/p>\n

Annex A provides examples of records that are developed during the execution and testing of grouted anchors.<\/p>\n

1.4<\/p>\n

Annex B provides information on the design of a fixed anchor length with respect to the bond or shear resistance at:<\/p>\n

    \n
  1. \n

    the ground\/grout interface;<\/p>\n<\/li>\n

  2. \n

    the grout\/encapsulation interface;<\/p>\n<\/li>\n

  3. \n

    the grout\/tendon interface.<\/p>\n<\/li>\n<\/ol>\n

    Annex C provides information on the pre-grouting and post-grouting of ground, where necessary.<\/p>\n

    Annex D provides information on the use of appropriate Young\u2019s modulus for the steel used in the design of the anchor tendon.<\/p>\n

    Annex E provides information on the types of corrosion that affect the steel elements of an anchor and the influence on the corrosion of the tendon of the ground and groundwater in which the anchor is installed.<\/p>\n

    Annex F provides information on the types of corrosion protection available for use in the fabrication and installation of the anchor.<\/p>\n

    Annex G (not used)<\/p>\n

    Annex H provides information on monitoring anchors in the long term, including appropriate acceptance criteria and remedial measures that can be applied in the event of non-compliance with the acceptance criteria.<\/p>\n

    Annex I draws attention to the statutory regulations affecting the safety, welfare and health of persons in the execution of anchor construction.<\/p>\n

    This code of practice is for the use of clients who commission the use of grouted anchors, ground engineering contractors, and geotechnical and structural designers.<\/p>\n

    Text deleted<\/i><\/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\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>\nForeword <\/td>\n<\/tr>\n
    7<\/td>\n1 Scope <\/td>\n<\/tr>\n
    8<\/td>\n2 Normative references <\/td>\n<\/tr>\n
    9<\/td>\n3 Terms, definitions, symbols and abbreviations <\/td>\n<\/tr>\n
    15<\/td>\nFigure 1 \u2014 Grouted anchors <\/td>\n<\/tr>\n
    19<\/td>\n4 General rules <\/td>\n<\/tr>\n
    20<\/td>\nTable 1 \u2014 Recommended design and construction duties <\/td>\n<\/tr>\n
    25<\/td>\n5 Limit states <\/td>\n<\/tr>\n
    26<\/td>\n6 Design situations
    7 Design considerations <\/td>\n<\/tr>\n
    28<\/td>\nFigure 2 \u2014 Grouted anchors <\/td>\n<\/tr>\n
    30<\/td>\nFigure 3 \u2014 Flow chart for the development of strategy for the monitoring and maintenance of grouted anchors
    8 Ultimate limit state design
    9 Serviceability limit state design
    10 Structural design <\/td>\n<\/tr>\n
    31<\/td>\n11 Anchor design <\/td>\n<\/tr>\n
    33<\/td>\nTable 2 \u2014 Minimum resistance factors recommended for the calculation of the size of individual fixed anchor lengths prior to testing <\/td>\n<\/tr>\n
    36<\/td>\n12 Materials <\/td>\n<\/tr>\n
    39<\/td>\nFigure 4 \u2014 Typical encapsulation centralizers <\/td>\n<\/tr>\n
    40<\/td>\nFigure 5 \u2014 Typical bar centralizer <\/td>\n<\/tr>\n
    41<\/td>\nFigure 6 \u2014 Typical cross\u2011section of centralizer\/spacer unit for multi\u2011strand tendon in temporary unprotected systems <\/td>\n<\/tr>\n
    42<\/td>\n13 Durability <\/td>\n<\/tr>\n
    46<\/td>\nFigure 7 \u2014 Typical coupler details in tendon free length of bar tendon <\/td>\n<\/tr>\n
    48<\/td>\nFigure 8 \u2014 Typical double corrosion protection of tendon bond length of strand tendon using a single corrugated sheath and polyester resin <\/td>\n<\/tr>\n
    49<\/td>\nFigure 9 \u2014 Typical double corrosion protection of tendon bond length of strand tendon using a double corrugated sheath and cement grout <\/td>\n<\/tr>\n
    50<\/td>\nFigure 10 \u2014 Tendon bond length protection for a ribbed bar tendon <\/td>\n<\/tr>\n
    51<\/td>\nFigure 11 \u2014 Typical double corrosion protection of tendon bond length of smooth or ribbed bar tendon using a double corrugated duct <\/td>\n<\/tr>\n
    52<\/td>\nFigure 12 \u2014 Typical double corrosion protection of restressable anchor head incorporating a strand tendon <\/td>\n<\/tr>\n
    54<\/td>\n14 Execution <\/td>\n<\/tr>\n
    64<\/td>\n15 Considerations related to testing
    16 Maintenance <\/td>\n<\/tr>\n
    66<\/td>\n17 Reporting <\/td>\n<\/tr>\n
    68<\/td>\nAnnex A (informative)\u2002 Indicative record sheets <\/td>\n<\/tr>\n
    69<\/td>\nTable A.1 \u2014 Typical drilling, grouting and tendon installation record sheet <\/td>\n<\/tr>\n
    71<\/td>\nTable A.2 \u2014 Typical stressing record sheet <\/td>\n<\/tr>\n
    73<\/td>\nTable A.3 \u2014 Typical stressing results and analysis record sheet
    Annex B (informative)\u2002 Determination of the size of grouted anchors <\/td>\n<\/tr>\n
    75<\/td>\nFigure B.1 \u2014 Main types of cement injection grouted anchors <\/td>\n<\/tr>\n
    76<\/td>\nFigure B.2 \u2014 Detail of tube \u00e0 manchette for pressure grouting control <\/td>\n<\/tr>\n
    78<\/td>\nTable B.1 \u2014 Rock\/grout bond values that have been employed in practice <\/td>\n<\/tr>\n
    81<\/td>\nTable B.2 \u2014 Rock\/grout bond values that have been recommended for design <\/td>\n<\/tr>\n
    83<\/td>\nTable B.3 \u2014 Rock\/grout bond values from rock anchor tests <\/td>\n<\/tr>\n
    84<\/td>\nFigure B.3 \u2014 Relationship between resistance efficiency factor and fixed anchor length <\/td>\n<\/tr>\n
    85<\/td>\nTable B.4 \u2014 Approximate relationship between bearing capacity factor Nq and slenderness ratio <\/td>\n<\/tr>\n
    86<\/td>\nFigure B.4 \u2014 Relationship between bearing capacity factor Nq and angle of shearing resistance in terms of effective stress <\/td>\n<\/tr>\n
    88<\/td>\nFigure B.5 \u2014 Ultimate load\u2011holding capacity of anchors in sandy gravels and gravelly sands, showing influence of soil type, density and fixed anchor length for Type C anchors <\/td>\n<\/tr>\n
    89<\/td>\nFigure B.6 \u2014 Relationship between ultimate load-holding capacity, fixed anchor length and dynamic penetration for two types of coarse soil <\/td>\n<\/tr>\n
    91<\/td>\nFigure B.7 \u2014 Skin friction in fine soils for various fixed anchor lengths, with and without post-grouting <\/td>\n<\/tr>\n
    93<\/td>\nFigure B.8 \u2014 Influence of post-grouting pressure on skin friction in a fine soil <\/td>\n<\/tr>\n
    97<\/td>\nTable B.5 \u2014 Fixed anchor lengths for cement-grouted rock anchors that have been employed or recommended in practice <\/td>\n<\/tr>\n
    100<\/td>\nFigure B.9 \u2014 Load transfer mechanisms for typical encapsulation systems <\/td>\n<\/tr>\n
    102<\/td>\nAnnex C (informative)\u2002 Pre-grouting and post-grouting <\/td>\n<\/tr>\n
    104<\/td>\nAnnex D (informative)\u2002 Tendon Young\u2019s Modulus values <\/td>\n<\/tr>\n
    105<\/td>\nAnnex E (informative)\u2002 Corrosion <\/td>\n<\/tr>\n
    108<\/td>\nTable E.1 \u2014 Soil corrosiveness related to values of soil resistivity and redox potential <\/td>\n<\/tr>\n
    109<\/td>\nAnnex F (informative)\u2002 Corrosion protection <\/td>\n<\/tr>\n
    110<\/td>\nTable F.1 \u2014 Proposed classes of protection for ground anchors <\/td>\n<\/tr>\n
    112<\/td>\nAnnex G (not used)
    Annex H (informative)\u2002 General considerations on monitoring and testing <\/td>\n<\/tr>\n
    115<\/td>\nTable H.1 \u2014 Relationship between the acceptance criteria for load-time and displacement-time behaviour <\/td>\n<\/tr>\n
    116<\/td>\nAnnex I (informative)\u2002 Health and safety <\/td>\n<\/tr>\n
    117<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Code of practice for grouted anchors<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2018<\/td>\n124<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":219260,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-219254","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\/219254","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\/219260"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=219254"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=219254"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=219254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}