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It also covers how to position views using four corner cases of a rectangular block and presents stepwise techniques for isometric lines, non-isometric lines, curved profiles, and circles using orthographic ordinates.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/fundamentals-of-drafting-isometric-projection-objectives-and-drawing-rules/656598/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/fundamentals-of-drafting-isometric-projection-objectives-and-drawing-rules/656598.png","ImageObject",300,407,{"name":42,"@type":43},"Guten Appetit_Joghurt","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-31","2026-10-25",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What is pictorial projection and what does it show in a 2D view?","Question",{"text":63,"@type":64},"Pictorial projection creates a two-dimensional view of a three-dimensional object that shows the three main faces indicating height, width, and depth simultaneously.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How do isometric projection and isometric drawing differ in scale use?",{"text":68,"@type":64},"Isometric projection uses the isometric scale, while isometric drawing uses the natural scale. In practice, isometric scale is seldom used because natural-scale drawing is correctly proportioned and simpler to construct.",{"name":70,"@type":61,"acceptedAnswer":71},"How do you determine which faces of a rectangular block are visible in isometric drawing?",{"text":72,"@type":64},"Mark the four bottom corners A, B, C, and D, then set the object’s position so one corner is the lowest point. When the lowest point is near the observer (A or B) the top face is visible; when it is far away (C or D) the bottom face is visible, and the left/right faces depend on whether the lowest point is on the left or right relative to the observer.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},656598,1793006681,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":102,"slug":103},6,50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":55,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":101,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":115,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":143,"read_time":144},1374408768420,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Fundamentals of Drafting-Isometric Projection  \nObjectives:  \n1. To identify common forms of pictorial projection.  \n2. To distinguish between isometric projection and isometric drawing.  \n3. To illustrate the principle of isometric drawing for rectilinear objects and curved objects.  \n4. To draw isometric views from given orthographic projection drawings.  \nPictorial projection  \nA pictorial projection is a method of producing a two-dimensional view of a three-dimensional object that shows the three main faces indicating the height, width and depth simultaneously.  \nExample  \nThe object in Orthographic Projection  \nCommon forms of pictorial projection  \ni) perspective projection ii) isometric projection iii) oblique projection  \nGeneral rules in drawing pictorial projection  \ni) suitable only for relatively simple objects  \nii) hidden lines are omitted, unless they are necessary  \niii) centre lines are omitted, unless required for dimensioning  \nDefining isometric projection  \nIsometric projection is a method of producing a pictorial view of an object. The projected view is based on three basic equipspaced axes known as isometric axes. The angles between the isometric axes , therefore, must be 120 degrees.  \nExample  \nThe object in Orthographic Projection  \ni)  the projected view  \nii)  matching the projected view with the isometric axes  \nIsometric projection vs isometric drawing  \nComparing the top surface of a cube drawn in isometric projection and the corresponding plan view  \nWhen these two views are put together, it is found that:  \ni) the edges of the cube in isometric projection are equally foreshortened, or  \nii) the edges will be larger than the cube actually is if the isometric projection is made using the true lengths  \nTo obtain a full size view, a scale must be used. This scale is called isometric scale.  \nTo distinguish whether the isometric scale is used in the projection, it is categorised into:  \ni) Isometric projection a view is drawn using the isometric scale  \nii) Isometric drawing a view is drawn using the natural scale  \nIn practice, isometric scale is seldom used. An isometric drawing using the natural scale will be correctly proportioned and its simplicity in construction offsets its disadvantage of being oversize.  \nPositioning of view  \nAn isometric drawing can be drawn differently according to how the object is being positioned.  \nConsider a rectangular block. The four bottom corners of the block are marked with A, B, C and D respectively.  \nWhen making an isometric drawing, it is important to note how the object is positioned. Taking the rectangular block as an example, four possible positions can be made.  \ni) Corner A is the lowest point of the isometric drawing  \n\n| ii) Corner B is the lowest point of the isometric drawing | |\n| --- | --- |\n\n\n| iii) | Corner C is the lowest point of the isometric drawing |  |  | |\n| --- | --- | --- | --- | --- |\n| iv) | Corner D is the lowest point of the isometric drawing |  |  | |\n| Comparing the four possible positions, the visible faces of the rectangular block are: |  |  |  |  |\n| i) | the front face is always visible in all possible positions | |  |  |\n| ii) | when the lowest point is near to the observer (Corner A or Corner B), the top face is visible | |  |  |\n| iii) | when the lowest point is far away from the observer (Corner C or Corner D), the bottom face is visible |  | |  |\n\n\n| iv) | the right face is visible when the lowest point is on the right near the observer (Corner A) or the lowest point is away from the observer on the left (Corner C) | |\n| --- | --- | --- |\n| v) | the left face is visible when the lowest point is on the left near the observer (Corner B) or the lowest point is away from the observer on the right (Corner D) | |\n\nBasic drawing techniques  \nSimilar to most pictorial projection, the general rules for constructing an isometric drawing are:  \ni) suitable only for relatively simple objects  \nii) hidden lines are omitted, unless t","cbCaifHBza6Zxfvc","https://ap.wps.com/l/cbCaifHBza6Zxfvc","pdf",323115,"English","# Objectives\n# Pictorial Projection\n## Common Forms of Pictorial Projection\n## General Rules for Drawing Pictorial Projection\n# Defining Isometric Projection\n## Isometric Projection Using Isometric Axes\n# Isometric Projection vs Isometric Drawing\n## Isometric Scale vs Natural Scale\n# Positioning of View\n## Rectangular Block Corner Cases A-D\n## Visible Faces Across Positions\n# Basic Drawing Techniques\n# Drawing Techniques\n## Isometric Lines\n## Non-Isometric Lines\n## Curved Profiles\n## Circles","[{\"question\":\"What is pictorial projection and what does it show in a 2D view?\",\"answer\":\"Pictorial projection creates a two-dimensional view of a three-dimensional object that shows the three main faces indicating height, width, and depth simultaneously.\"},{\"question\":\"How do isometric projection and isometric drawing differ in scale use?\",\"answer\":\"Isometric projection uses the isometric scale, while isometric drawing uses the natural scale. In practice, isometric scale is seldom used because natural-scale drawing is correctly proportioned and simpler to construct.\"},{\"question\":\"How do you determine which faces of a rectangular block are visible in isometric drawing?\",\"answer\":\"Mark the four bottom corners A, B, C, and D, then set the object’s position so one corner is the lowest point. When the lowest point is near the observer (A or B) the top face is visible; when it is far away (C or D) the bottom face is visible, and the left/right faces depend on whether the lowest point is on the left or right relative to the observer.\"}]","Fundamentals of Drafting - Isometric Projection - Objectives and Drawing Rules | PDF",1792969557,23]