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The material explains core line properties for accuracy—uniformity, contrast, consistent weight, and sharpness—and provides practical pencil, inking, and vellum paper techniques for producing clear, correctly drafted drawings.",{"@graph":14,"@context":71},[15,34,54],{"@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/use-of-lines-ansi-standards-line-types-weights-contours-and-texture/348176/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":48,"encodingFormat":47,"isAccessibleForFree":49,"interactionStatistic":50},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/use-of-lines-ansi-standards-line-types-weights-contours-and-texture/348176.png","ImageObject",300,407,{"name":42,"@type":43},"Noah","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-09-22",true,{"@type":51,"interactionType":52,"userInteractionCount":4},"InteractionCounter",{"@type":53},"ViewAction",{"@type":55,"mainEntity":56},"FAQPage",[57,63,67],{"name":58,"@type":59,"acceptedAnswer":60},"Why must technical drawings use ANSI line standards?","Question",{"text":61,"@type":62},"Using line types, weights, contours, and textures according to ANSI standards ensures accurate communication of object details and that viewers can interpret the drawing correctly.","Answer",{"name":64,"@type":59,"acceptedAnswer":65},"What are visible object lines and how should they be drawn?",{"text":66,"@type":62},"Visible lines indicate features that can be seen and describe the visible edges or surfaces. They should be continuous and drawn thick.",{"name":68,"@type":59,"acceptedAnswer":69},"What do hidden lines represent and what line style do they use?",{"text":70,"@type":62},"Hidden lines represent edges or features that exist but are not visible. 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Each line on a technical drawing describes a feature of an object. The lines vary in type, weight, contour, and texture.  \nUsing lines correctly—to ANSI standards—ensures you communicate accurately about the details of an object or a building.  \nObjective:   \n 􀀂  Use line types, weights, contours, and texture according to ANSI standards.  \nKey Terms:  \n􀀂 alphabet of lines  \ncenterlines construction lines hidden linesinking  \nlines  \nline weight object lines opaque point  \nsection lines vellum paper visible lines  \nUnderstanding the Use of Lines   \nLines are curved or straight paths between two points. A point is a symbol that describes a location in space. Lines can vary in type, weight, contour (outline), and texture. The two mainline widths are thick and thin. The type of line you draw (a thick or a thin line) is determined by how it will be drafted or printed. Industry standards are dictated by the American National Standards Institute (ANSI) and are used consistently worldwide.  \nLINE TYPES  \nA variety of lines are used to describe an object completely. You use line types to more fully describe the object. In addition, lines are used to represent an edge or a feature of a part,  \nE-unit: Use of Lines  \nPage 1 􀀂 [www.MyCAERT.com](www.MyCAERT.com)  \nCopyright © by CAERT, Inc.— Reproduction by subscription only. 600074  \n\n| whether seen or unseen. The alphabet of lines is different types of lines commonly used in architectural and technical drawings; it forms a type of graphic alphabet.\u003Cbr>Visible or Object Lines\u003Cbr>Visible lines are marks that indicate all features of the object that can be seen, and they describe the visible edge or surface of an object. Visible lines are also known as object lines. Make these lines continuous and thick.\u003Cbr>Hidden Lines\u003Cbr>Hidden lines are thin, short, dashed lines that represent a feature or edge of an object that is there, but it is hidden from view. |  | Part Outlines\u003Cbr>Section Lines\u003Cbr>Hidden Lines\u003Cbr>Center Lines\u003Cbr>Dimension and Extension Lines\u003Cbr>Cutting Plane\u003Cbr>Heavy\u003Cbr>\u003Cbr>Light\u003Cbr>~~  3.000 ~~\u003Cbr>Heavy\u003Cbr>Break Lines\u003Cbr>\u003Cbr>FIGURE 1. Line types communicate essential information about a drawn object. The use of incorrect line weights would make it impossible for others to understand the drawing. |  |\n| --- | --- | --- | --- |\n| Centerlines\u003Cbr>Centerlines are marks that consist of long, dashed lines that represent an imaginary line to mark the exact center or axis of an object. Use centerlines to mark the center of an arc or circle.\u003Cbr>Construction Lines\u003Cbr>Construction lines are marks used for laying out drawings and for all preliminary work. Draw these lines lightly so they are not reproduced and so they are easily erased. |  |  |  |\n|  | \u003Cbr>FURTHER EXPLORATION…\u003Cbr>ONLINE CONNECTION: Line Types\u003Cbr>Line types are a form of communication in a technical drawing. They give the viewer information about the object. It is critical that they are used correctly to ensure all the features are known. To learn more about line types view the video “Line Types” at\u003Cbr>[http://www.youtube.com/watch?v=qpxNo_9Vk3U](http://www.youtube.com/watch?v=qpxNo_9Vk3U)\u003Cbr>|  |  |\n|  |  |  |  |\n\nE-unit: Use of Lines  \nPage 2 􀀂 [www.MyCAERT.com](www.MyCAERT.com)  \nCopyright © by CAERT, Inc.— Reproduction by subscription only. 600074  \n\n| Section Lines\u003Cbr>Section lines are marks used when drawing section views and indicate where the material has been cut through the object. They are a series of thin parallel lines placed on the cut surfaces of section views on a technical drawing.\u003Cbr>LINE TECHNIQUES |  |\n| --- | --- |\n| The four properties of correctly drawn lines are:\u003Cbr>􀀃 Line uniformity—Without exception, all lines are drawn at a correct thickness.\u003Cbr>􀀃 Line contrast—Lines are consistent and accurately use the variation of thick and thin lines.\u003Cbr>􀀃 Line weight—The darkness of the line remains c","cbCaigxiD3mJWe2E","https://ap.wps.com/l/cbCaigxiD3mJWe2E","pdf",145271,"English","# Understanding the Use of Lines\n## Line Types, Properties, and Standards\n## Visible and Hidden Lines\n## Centerlines and Construction Lines\n## Section Lines\n## Line Techniques\n## Pencil Techniques\n## Inking Techniques\n## Vellum Paper\n## Template Lifter","[{\"question\":\"Why must technical drawings use ANSI line standards?\",\"answer\":\"Using line types, weights, contours, and textures according to ANSI standards ensures accurate communication of object details and that viewers can interpret the drawing correctly.\"},{\"question\":\"What are visible object lines and how should they be drawn?\",\"answer\":\"Visible lines indicate features that can be seen and describe the visible edges or surfaces. They should be continuous and drawn thick.\"},{\"question\":\"What do hidden lines represent and what line style do they use?\",\"answer\":\"Hidden lines represent edges or features that exist but are not visible. They use thin, short, dashed line segments.\"}]","Use of Lines - ANSI Standards - Line Types, Weights, Contours, and Texture | PDF",13]