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The chart lists drawing scale factors and AutoCAD text heights for common architectural drafting scales. All text shown in inches: (1/8 = 1/8"); (3 = 3"); (1 1/2 = 1 1/2"); (48 = 48"), etc... To get feet, divide by 12.
CAD Scale Factors. Design & Documentation > Construction Documentation. For simplicity and clarity, CAD users draw buildings at full scale. For instance, when drawing a door in CAD, the door would be 3 feet wide and 7 feet tall.
drafting drawing scale chart + factor mechanical architectural civil decimal eq. 1:1 1” = 1” 1’ = 1’ - 1.00 - 3/4” = 1” 9” = 1’ - 0.75 1:2 1/2" = 1” 6” = 1’ - 0.500 - 3/8” = 1” - - 0.375 1:4 1/4" = 1” 3” = 1’ - 0.250 1:5 - - - 0.20 - 3/16” = 1” - - 0.1875 1:8 1/8” = 1” 1-1/2” = 1’ - 0.125
Need help calculating CAD scale factors for text sizes? Use our table to easily determine Drawing Scale Factor (DIMSCALE) and choose the appropriate plotted text height for seemless plotting.
AutoCAD scale factors are indispensable tools in design and drafting, enabling accurate representation of objects and spaces. Mastering the calculation of these factors is essential for maintaining accuracy in your AutoCAD drawings , as it enables proper scaling of elements and ensures your designs are represented as intended.
Standard Text Sizes & Scale Factors Psltscale = 0 Base Drawing = 1 Sheet Scale of drawing Text size Decimal equiv. Scale factor Line Type Scale Factor Viewport Scale Factor Full 5/64” .078125” 1 .1875 1/32” 30” 30” 384 1/16” 15” 15” 192 36 3/32” 10” 10” 128 24 1/8” 7 1/2” 7.5” 96 18
Two types of scale factor charts are commonly used in AutoCAD: the architectural and engineering scale charts. These charts provide a quick reference for commonly used scales, making choosing a suitable scale factor easier.
Say you are working on an architectural drawing with a scale of 1/4" = 1'-0" (Architectural units), and you want to set the Linetype Scale (LTSCALE) setting to make the dotted and dashed lines show properly.
Use this scale factor chart to help you find a usable conversion factor for your CAD drawings 📐.
Think of it as a ratio of presented units to the drawing units. The other is the act of modifying one or more objects to physically change their size in your drawing by using the SCALE command. Let’s examine both of these and how to scale in AutoCAD for today’s post.