{"id":469,"date":"2013-03-04T13:14:01","date_gmt":"2013-03-04T13:14:01","guid":{"rendered":"http:\/\/blogs.bath.ac.uk\/structures\/?p=469"},"modified":"2013-03-04T13:14:01","modified_gmt":"2013-03-04T13:14:01","slug":"question-13","status":"publish","type":"post","link":"https:\/\/blogs.bath.ac.uk\/structures\/2013\/03\/04\/question-13\/","title":{"rendered":"Question 13"},"content":{"rendered":"<h1 style=\"margin: 0px;padding: 0px 0px 1em;border: 0px;font-size: 1.3em;font-family: Arial, sans-serif;line-height: normal\">Something for all my Bridge Engineering students.<\/h1>\n<p style=\"margin: 0px;padding: 0px 0px 1em;border: 0px;font-family: Arial, sans-serif;line-height: normal\">Pre-stressing a simply supported beam<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"color: #0000ee;font-family: Geneva, Arial, Helvetica, sans-serif;font-size: 16.363636016845703px;line-height: normal\" src=\"http:\/\/bathblogs.wpengine.com\/structures\/wp-content\/uploads\/sites\/51\/2013\/03\/week13-300x192.jpg\" alt=\"week13\" width=\"300\" height=\"192\" \/><\/p>\n<p><span style=\"font-family: Geneva, Arial, Helvetica, sans-serif;font-size: small\"><span style=\"line-height: normal\">For the simply supported pre-stressed beam shown above, calculate the maximum allowable \u00a0length (in meters) if the maximum tensile stresses due to the unfactored dead weight are limited to 1N\/mm2.<\/span><\/span><\/p>\n<p><span style=\"font-family: Geneva, Arial, Helvetica, sans-serif;font-size: small\"><span style=\"line-height: normal\"><span style=\"font-family: Geneva, Arial, Helvetica, sans-serif;font-size: medium;line-height: normal\">Take the density of concrete to be 24kN\/m3 and the centroidal \u00a0axis is at mid-height of the section.Please ignore any reliving effects or the action of live loads<\/span><\/span><\/span><\/p>\n<p><span style=\"font-family: Geneva, Arial, Helvetica, sans-serif;font-size: 16.363636016845703px;line-height: normal\"><a href=\"http:\/\/bathblogs.wpengine.com\/structures\/wp-content\/uploads\/sites\/51\/2013\/03\/hint1-prestress.pdf\">hint1-prestress<\/a><\/span><\/p>\n<p><span style=\"font-family: Geneva, Arial, Helvetica, sans-serif;font-size: 16.363636016845703px;line-height: normal\">Hopefully you got an \u00a0answer of 36.7m, which is less than the transportable limit of 40m. If you got anything \u00a0other than 36.7m please read the solution. <\/span><a href=\"http:\/\/bathblogs.wpengine.com\/structures\/wp-content\/uploads\/sites\/51\/2013\/03\/week13-solution.pdf\">week13 solution<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Something for all my Bridge Engineering students. Pre-stressing a simply supported beam For the simply supported pre-stressed beam shown above, calculate the maximum allowable \u00a0length (in meters) if the maximum tensile stresses due to the unfactored dead weight are limited...<\/p>\n","protected":false},"author":203,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4,10],"tags":[],"class_list":["post-469","post","type-post","status-publish","format-standard","hentry","category-beams","category-prestress"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/posts\/469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/users\/203"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/comments?post=469"}],"version-history":[{"count":0,"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/posts\/469\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/media?parent=469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/categories?post=469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/structures\/wp-json\/wp\/v2\/tags?post=469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}