{"id":130,"date":"2008-11-11T05:03:18","date_gmt":"2008-11-11T13:03:18","guid":{"rendered":"http:\/\/www.fcsuper.com\/swblog\/?p=130"},"modified":"2019-04-21T21:52:38","modified_gmt":"2019-04-22T01:52:38","slug":"foreshortening-dimensions-radial-not-linear","status":"publish","type":"post","link":"http:\/\/www.fcsuper.com\/swblog\/?p=130","title":{"rendered":"Foreshortening Dimensions (Radial, not linear)"},"content":{"rendered":"
[Updated to address changes in SOLIDWORKS 2016]<\/span><\/pre>\n
SOLIDWORKS provides for the foreshortening of diameters and radii dimensions. \u00a0Older releases of SOLIDWORKS didn’t allow for the foreshortening of linear dimensions (or clipped dimensions), except in break views where both ends of the dimension are visible. \u00a0When I first encountered this limitation years ago, I was concerned that SOLIDWORKS developers just simply overlooked this functionality. \u00a0After all, if one can foreshorten a radius, then why not a linear dimension? \u00a0I was even sure I could find examples of this already being done on other drawings in detail views. \u00a0I was trying to use an open ended dimension line with double arrows on the open end. \u00a0I may have actually used this method a couple of times back in my AutoCAD days.<\/p>\n
But what didn’t SOLIDWORKS support this for many years? \u00a0The lack of foreshortened linear dimensions can be understood by reading ASME Y14.5M-1994 paragraph 1.8.2.2. \u00a0This paragraph established the foreshortening of radii. \u00a0Its title Foreshortened Radii<\/em>\u009d seems to preclude these methods for linear dimensions. \u00a0But why?<\/p>\n
The clue is the intent. \u00a01.8.2.2. states that if the center of a radius is outside the drawing or interferes with another view, the radius dimension may be foreshortened. \u00a0Strangely enough, paragraph 1.8.2.2 does not specifically describe the just how foreshortening is demonstrated, other than to say the dimension line is radial to the arc. \u00a0It does reference a figure that shows radii centers repositioned with zigzagged radial and coordinate dimension lines. \u00a0The key is that the center of the radius is still within view. \u00a0The dimensions have known termination at both ends.<\/p>\n
\"Allowed<\/p>\n
There is an issue with using this methodology on any dimensions where the termination of both ends is not clearly shown. \u00a0Without both ends of the dimension in view (or known through some other way), there is no established way to determine where the dimension’s open end terminates. \u00a0It is an incomplete specification. \u00a0In other words, if I have a detail view and attempt to dimension to a feature not in that detail, the fabricator does not know the location of the other end of that dimension. \u00a0SOLIDWORKS\u00a0previous limitation\u009d was\u00a0not really a limitation after all. \u00a0It follows the drafting standards in a very logical way.<\/p>\n
\"Disallowed<\/p>\n
Another thing SOLIDWORKS\u00a0allows is the foreshortening of diameters. \u00a0Although this is not directly supported by the standards, it is common practice. \u00a0Unlike the foreshortening of linear dimensions, foreshortened diameters make sense since the other end of the dimension is known, even if it is not shown. \u00a0I’ll address foreshortened diameters in more detail a future article.<\/p>\n
As of SOLIDWORKS 2016, foreshorten of linear dimensions is supported without restriction. \u00a0This was added for customers who still need methods to clip dimensions regardless to the issues mentioned above.<\/p>\n","protected":false},"excerpt":{"rendered":"
[Updated to address changes in SOLIDWORKS 2016] SOLIDWORKS provides for the foreshortening of diameters and radii dimensions. \u00a0Older releases of SOLIDWORKS didn’t allow for the foreshortening of linear dimensions (or clipped dimensions), except in break views where both ends of the dimension are visible. \u00a0When I first encountered this limitation years ago, I was concerned … Continue reading “Foreshortening Dimensions (Radial, not linear)”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[69,16],"tags":[342,343,344,340,339,341,336,345,338,337],"series":[],"class_list":["post-130","post","type-post","status-publish","format-standard","hentry","category-asme-standards","category-drawing","tag-arrow","tag-clip","tag-clipped-dimension","tag-diameter","tag-dimension","tag-double","tag-foreshorten","tag-linear","tag-radii","tag-radius"],"yoast_head":"\nForeshortening Dimensions (Radial, not linear) - SolidWorks Legion<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.fcsuper.com\/swblog\/?p=130\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Foreshortening Dimensions (Radial, not linear) - SolidWorks Legion\" \/>\n<meta property=\"og:description\" content=\"[Updated to address changes in SOLIDWORKS 2016] SOLIDWORKS provides for the foreshortening of diameters and radii dimensions. \u00a0Older releases of SOLIDWORKS didn’t allow for the foreshortening of linear dimensions (or clipped dimensions), except in break views where both ends of the dimension are visible. \u00a0When I first encountered this limitation years ago, I was concerned … Continue reading "Foreshortening Dimensions (Radial, not linear)"\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.fcsuper.com\/swblog\/?p=130\" \/>\n<meta property=\"og:site_name\" content=\"SolidWorks Legion\" \/>\n<meta property=\"article:published_time\" content=\"2008-11-11T13:03:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-04-22T01:52:38+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/fcsuper.com\/images\/Blog\/part333%20-%20Sheet2.jpg\" \/>\n<meta name=\"author\" content=\"fcsuper\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@swsuper\" \/>\n<meta name=\"twitter:site\" content=\"@swsuper\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"fcsuper\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/?p=130#article\",\"isPartOf\":{\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/?p=130\"},\"author\":{\"name\":\"fcsuper\",\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/#\/schema\/person\/859d9f25668554f7193852892dbad92b\"},\"headline\":\"Foreshortening Dimensions (Radial, not linear)\",\"datePublished\":\"2008-11-11T13:03:18+00:00\",\"dateModified\":\"2019-04-22T01:52:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/?p=130\"},\"wordCount\":460,\"commentCount\":2,\"publisher\":{\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/#\/schema\/person\/859d9f25668554f7193852892dbad92b\"},\"image\":{\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/?p=130#primaryimage\"},\"thumbnailUrl\":\"http:\/\/fcsuper.com\/images\/Blog\/part333%20-%20Sheet2.jpg\",\"keywords\":[\"arrow\",\"clip\",\"clipped dimension\",\"diameter\",\"dimension\",\"double\",\"foreshorten\",\"linear\",\"radii\",\"radius\"],\"articleSection\":[\"ASME Standards\",\"Drawing\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"http:\/\/www.fcsuper.com\/swblog\/?p=130#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.fcsuper.com\/swblog\/?p=130\",\"url\":\"http:\/\/www.fcsuper.com\/swblog\/?p=130\",\"name\":\"Foreshortening Dimensions (Radial, not linear) - 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