ISO 22477-4:2018 establishes the specifications for the execution of dynamic load tests in which a single pile is subject to an axial dynamic load in compression.<\/p>\n
ISO 22477-4:2018 outlines the methods of testing required to allow assessment of pile resistance to be determined from the following methods and procedures described in EN1997-1:2004+A1:2013:<\/p>\n
a) dynamic impact testing ? determination of pile compressive resistance by evaluation of measurements of strain and acceleration and or displacement at the pile head with respect to time;<\/p>\n
b) pile driving formulae ? evaluation of pile compressive resistance from blow counts and hammer energy during pile driving;<\/p>\n
c) wave equation analysis ? evaluation of pile compressive resistance from blow counts by modelling of the pile, soil and driving equipment;<\/p>\n
d) multi-blow dynamic testing ? evaluation of pile compressive resistance from a series of blows designed to generate different levels of pile head displacement and velocity.<\/p>\n
ISO 22477-4:2018 is applicable to piles loaded axially in compression.<\/p>\n
ISO 22477-4:2018 is applicable to all pile types mentioned in EN 1536, EN 12699 and EN 14199.<\/p>\n
The tests considered in this document are limited to dynamic load tests on piles only.<\/p>\n
NOTE 1 ISO 22477-4 can be used in conjunction with EN1997-1:2004+A1:2013. Numerical values of partial factors for limit states from pile load tests to be taken into account in design are provided in EN 1997-1. For design to EN 1997-1 the results from dynamic load tests will be considered equivalent to the measured compressive resistance Rc,m after being subject to appropriate analysis.<\/p>\n
NOTE 2 Guidance on analysis procedures for dynamic load testing results is given in Annexes A, B, D, E and F.<\/p>\n
ISO 22477-4:2018 provides specifications for:<\/p>\n
i) investigation tests, whereby a sacrificial pile is loaded up to ultimate limit state;<\/p>\n
ii) control tests, whereby the pile is loaded up to a specified load in excess of the serviceability limit state.<\/p>\n
NOTE 3 Generally, an investigation test focuses on general knowledge of a pile type; a control test focuses on one specific application of a pile.<\/p>\n","protected":false},"excerpt":{"rendered":"
Geotechnical investigation and testing \u2014 Testing of geotechnical structures \u2014 Part 4: Testing of piles: dynamic load testing<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2018-03<\/td>\n 60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":607110,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1293,2634],"product_tag":[],"class_list":{"0":"post-607100","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-93-020","7":"product_cat-iso","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\/607100","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\/607110"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=607100"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=607100"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=607100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}