{"id":527,"date":"2018-05-09T16:23:28","date_gmt":"2018-05-09T16:23:28","guid":{"rendered":"https:\/\/learn.hydrologystudio.com\/studio-express\/?post_type=ht_kb&#038;p=527"},"modified":"2022-01-04T17:15:21","modified_gmt":"2022-01-04T17:15:21","slug":"inlet-and-gutter-spreads","status":"publish","type":"ht_kb","link":"https:\/\/learn.hydrologystudio.com\/studio-express\/knowledge-base\/inlet-and-gutter-spreads\/","title":{"rendered":"Inlet and Gutter Spreads"},"content":{"rendered":"\n<p>You&#8217;ll notice on the results grid, plots and printed reports two categories of spreads.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Gutter<\/li><li>Inlet<\/li><\/ol>\n\n\n\n<p>For inlets located in sags, these two will be the same. For inlets on grade, the gutter spread refers to the spread just upstream of the inlet and is based on the gutter properties, flow, etc. Inlet spread refers to the spread at the center of the inlet face.<\/p>\n\n\n\n<p><strong>Cross-section of Inlet Spread<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-content\/uploads\/sites\/3\/2017\/10\/InletSpreadSection-1024x282.png\" alt=\"\" class=\"wp-image-804\"\/><\/figure>\n\n\n\n<p><strong>Cross-section of Gutter Spread<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-content\/uploads\/sites\/3\/2017\/10\/GutterSpreadSection-1024x216.png\" alt=\"\" class=\"wp-image-805\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Gutter Spread<\/h2>\n\n\n\n<p>Studio Express uses the following form of Manning&#8217;s equation to compute the depth of flow in the gutter:<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/learn.hydrologystudio.com\/stormwater-studio\/wp-content\/uploads\/sites\/3\/2017\/10\/EqGutterSpread.png\" alt=\"\" class=\"wp-image-807\"\/><\/figure>\n\n\n\n<p>Where:<br>D = depth of flow in gutter in ft (m)<br>Q = flow in gutter in cfs (cms)<br>Z = reciprocal of the cross slope<br>S = longitudinal gutter slope<br>Kc = 0.56 (0.376)<\/p>\n\n\n\n<p>For compound cross slopes, a trial and error procedure is used to compute D in the gutter, (Sw) and (Sx) sections separately. From this depth and cross-section geometry, the gutter spread is computed. This depth and spread is labeled &#8220;Gutter Depth&#8221; and &#8220;Gutter Spread&#8221; respectively in the reports.<\/p>\n\n\n\n<figure class=\"wp-block-image alignnone wp-image-429 size-full is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"1232\" height=\"473\" src=\"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating.png\" alt=\"Inlet Rating Curve\" class=\"wp-image-429\" srcset=\"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating.png 1232w, https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating-300x115.png 300w, https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating-768x295.png 768w, https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating-1024x393.png 1024w, https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating-50x19.png 50w, https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating-60x23.png 60w, https:\/\/learn.hydrologystudio.com\/studio-express\/wp-content\/uploads\/sites\/6\/2018\/05\/InletPlotRating-100x38.png 100w\" sizes=\"auto, (max-width: 1232px) 100vw, 1232px\" \/><figcaption>Gutter spreads are typically larger than Inlet spreads<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Calculating spreads for gutter and inlet<\/p>\n","protected":false},"author":1,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[31],"ht-kb-tag":[],"class_list":["post-527","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-computational-methods"],"_links":{"self":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb\/527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/comments?post=527"}],"version-history":[{"count":4,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb\/527\/revisions"}],"predecessor-version":[{"id":843,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb\/527\/revisions\/843"}],"wp:attachment":[{"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/media?parent=527"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb-category?post=527"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/learn.hydrologystudio.com\/studio-express\/wp-json\/wp\/v2\/ht-kb-tag?post=527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}