{"id":28,"date":"2021-12-01T15:47:52","date_gmt":"2021-12-01T20:47:52","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/?post_type=chapter&#038;p=28"},"modified":"2022-08-15T13:58:44","modified_gmt":"2022-08-15T17:58:44","slug":"square-throat-square-heel-elbow-no-seams","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/chapter\/square-throat-square-heel-elbow-no-seams\/","title":{"raw":"Square Throat-Square Heel Elbow-No Seams","rendered":"Square Throat-Square Heel Elbow-No Seams"},"content":{"raw":"<ol>\r\n \t<li>[embed]https:\/\/youtu.be\/aFm0crX-dkM[\/embed]\r\n\r\nStudy the shop drawing. <strong>Remember that the first number for the duct size is always what we \u201csee in the view\u201d. The second number is the depth, or hidden view<\/strong>\r\n\r\n<img class=\"alignnone size-full wp-image-83\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.1_Square-Throat-Square-Heel-Elbow-No-Seams-F_Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Calculate the blank sizes\r\n<ul>\r\n \t<li>Cheek\r\n<ul>\r\n \t<li>The drawing shows an opening size of 4\u201d and a throat of 4\u201d. So the horizontal dimension is 8\u201d. Because the fitting is symmetrical, the vertical dimension is the same, 8\u201d. Our blank size is 8\u201dx 8\u201d\r\n<img class=\"alignnone size-full wp-image-84\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.2a_Square-Throat-Square-Heel-Elbow-No-Seams-F_Cheek.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li>Throat\r\n<ul>\r\n \t<li>The throat is show as 4\u201d x 4\u201d. So we can use perimeter to calculate the length. This gives us 8\u201d. The second dimension comes from the depth of the opening, given at 6\u201d. So our blank size is 8\u201d x 6\u201d\r\n<img class=\"alignnone size-full wp-image-85\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.2b_Square-Throat-Square-Heel-Elbow-No-Seams-F_Throat.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li>Heel\r\n<ul>\r\n \t<li>Because the throat is 4\u201d and the opening is 4\u201d, to get to the outside where the heel sits, it measures 8\u201d.That gives us a perimeter of 16\u201d. Again we can use simple math to calculate 8\u201d + 8\u201d= 16\u201d. The second dimension comes from the depth of the opening, given at 6\u201d. So our blank size is 16\u201d x 6\u201d\r\n<img class=\"alignnone size-full wp-image-86\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.2c_Square-Throat-Square-Heel-Elbow-No-Seams-F_Heel.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li>Shear the blanks out. We\u2019ll draw out all parts for this one\r\n<img class=\"alignnone size-full wp-image-87\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/4.3-Radius-Throat-Radius-Heel-Elbow-Cheek-Drawing-1.gif\" alt=\"\" width=\"640\" height=\"480\" \/><img class=\"alignnone size-full wp-image-88\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.3b-Square-Throat-Square-Heel-Elbow-No-Seams-Throat-Blank-Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><img class=\"alignnone size-full wp-image-89\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.3c-Square-Throat-Square-Heel-Elbow-No-Seams-Heel-Blank-Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Mark all parts with an arrow for airflow\r\n<img class=\"alignnone size-full wp-image-90\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.4a-Square-Throat-Square-Heel-Elbow-No-Seams_Cheek-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/> <img class=\"alignnone size-full wp-image-91\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.4b-Square-Throat-Square-Heel-Elbow-No-Seams_Throat-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/> <img class=\"alignnone size-full wp-image-92\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.4c-Square-Throat-Square-Heel-Elbow-No-Seams_Heel-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\r\n \t<li>Layout the parts\r\n<ul>\r\n \t<li>Cheek\r\n<ul>\r\n \t<li>From the outside, mark the opening at 4\u201d for both ends of the fitting. Square the lines to create the throat section. <strong>Notice we always mark the opening, it is the most important feature of the fitting<\/strong><\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li>Heel and Throat\r\n<ul>\r\n \t<li>Mark the perimeter calculated. <strong>There will be a bend at the mid point of both the heel and throat\r\n\r\n<img class=\"alignnone size-full wp-image-93\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.5a-Square-Throat-Square-Heel-Elbow-No-Seams_Mark-Opening.gif\" alt=\"\" width=\"640\" height=\"480\" \/>\r\n<\/strong><\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ol>","rendered":"<ol>\n<li><iframe loading=\"lazy\" id=\"oembed-1\" title=\"STSH Elbow\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/aFm0crX-dkM?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe>\n<p>Study the shop drawing. <strong>Remember that the first number for the duct size is always what we \u201csee in the view\u201d. The second number is the depth, or hidden view<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-83\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.1_Square-Throat-Square-Heel-Elbow-No-Seams-F_Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Calculate the blank sizes\n<ul>\n<li>Cheek\n<ul>\n<li>The drawing shows an opening size of 4\u201d and a throat of 4\u201d. So the horizontal dimension is 8\u201d. Because the fitting is symmetrical, the vertical dimension is the same, 8\u201d. Our blank size is 8\u201dx 8\u201d<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.2a_Square-Throat-Square-Heel-Elbow-No-Seams-F_Cheek.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<\/ul>\n<\/li>\n<li>Throat\n<ul>\n<li>The throat is show as 4\u201d x 4\u201d. So we can use perimeter to calculate the length. This gives us 8\u201d. The second dimension comes from the depth of the opening, given at 6\u201d. So our blank size is 8\u201d x 6\u201d<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-85\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.2b_Square-Throat-Square-Heel-Elbow-No-Seams-F_Throat.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<\/ul>\n<\/li>\n<li>Heel\n<ul>\n<li>Because the throat is 4\u201d and the opening is 4\u201d, to get to the outside where the heel sits, it measures 8\u201d.That gives us a perimeter of 16\u201d. Again we can use simple math to calculate 8\u201d + 8\u201d= 16\u201d. The second dimension comes from the depth of the opening, given at 6\u201d. So our blank size is 16\u201d x 6\u201d<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.2c_Square-Throat-Square-Heel-Elbow-No-Seams-F_Heel.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Shear the blanks out. We\u2019ll draw out all parts for this one<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-87\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/4.3-Radius-Throat-Radius-Heel-Elbow-Cheek-Drawing-1.gif\" alt=\"\" width=\"640\" height=\"480\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-88\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.3b-Square-Throat-Square-Heel-Elbow-No-Seams-Throat-Blank-Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-89\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.3c-Square-Throat-Square-Heel-Elbow-No-Seams-Heel-Blank-Drawing.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Mark all parts with an arrow for airflow<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-90\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.4a-Square-Throat-Square-Heel-Elbow-No-Seams_Cheek-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-91\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.4b-Square-Throat-Square-Heel-Elbow-No-Seams_Throat-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-92\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.4c-Square-Throat-Square-Heel-Elbow-No-Seams_Heel-Airflow.gif\" alt=\"\" width=\"640\" height=\"480\" \/><\/li>\n<li>Layout the parts\n<ul>\n<li>Cheek\n<ul>\n<li>From the outside, mark the opening at 4\u201d for both ends of the fitting. Square the lines to create the throat section. <strong>Notice we always mark the opening, it is the most important feature of the fitting<\/strong><\/li>\n<\/ul>\n<\/li>\n<li>Heel and Throat\n<ul>\n<li>Mark the perimeter calculated. <strong>There will be a bend at the mid point of both the heel and throat\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-93\" src=\"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-content\/uploads\/sites\/1571\/2021\/12\/5.5a-Square-Throat-Square-Heel-Elbow-No-Seams_Mark-Opening.gif\" alt=\"\" width=\"640\" height=\"480\" \/><br \/>\n<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"author":1078,"menu_order":3,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-28","chapter","type-chapter","status-publish","hentry"],"part":3,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/28","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/users\/1078"}],"version-history":[{"count":5,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/28\/revisions"}],"predecessor-version":[{"id":95,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/28\/revisions\/95"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/parts\/3"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapters\/28\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/media?parent=28"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/pressbooks\/v2\/chapter-type?post=28"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/contributor?post=28"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/ductfittings\/wp-json\/wp\/v2\/license?post=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}