{"id":559011,"date":"2024-11-05T18:22:41","date_gmt":"2024-11-05T18:22:41","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-910012012\/"},"modified":"2024-11-05T18:22:41","modified_gmt":"2024-11-05T18:22:41","slug":"esdu-910012012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-910012012\/","title":{"rendered":"ESDU 91001:2012"},"content":{"rendered":"<p>\n\tESDU 91001 gives background information and guidance on the<br \/>\nvalues for various quantities needed in calculating the response of<br \/>\nflexible structures. Axes systems used are defined and the equation<br \/>\nof motion for a single mode in translational or rotational<br \/>\nvibration is stated. Likely inaccuracies to be met in estimated or<br \/>\nfull-scale measured values of natural frequency, structural damping<br \/>\nand generalised mass are suggested. Natural frequencies are given<br \/>\nfor the first four modes of vibration of single- and multi-span<br \/>\nbeams and the simple equations for the frequency of the fundamental<br \/>\nmode of vibration of a tall building is given, with an indication<br \/>\nof the likely error. A similar equation is also provided for<br \/>\nstacks, towers and columns. Treatment of additional masses and<br \/>\nnon-uniform mass is considered. Mode shape functions are provided<br \/>\nfor cantilever and single- and two-span structures in various<br \/>\ntranslational modes, for single-support structures in rotation<br \/>\nabout the support, and for a cantilever in the first torsional<br \/>\nmode. Typical values of structural damping are tabulated for<br \/>\nstacks, towers and tubes. Equations of mode-generalised mass and<br \/>\ninertia are stated, and generalised masses in bending are listed<br \/>\nfor buildings and single-span beams. Typical ranges of structural<br \/>\ndensity are shown graphically for stacks, and stated for buildings,<br \/>\nand a table gives area and moment of area for a wide range of<br \/>\nsection shapes.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Structural Parameters Used in Response Calculations Estimation of Numerical Values<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/esdu\/\"><b>ESDU<\/b><\/a><\/td>\n<td>2012-03<\/td>\n<td>36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":559021,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-559011","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-esdu","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\/559011","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\/559021"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=559011"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=559011"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=559011"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}