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Calculating CAD Scale Factors. To convert an architectural drawing scale to a scale factor: Select the desired scale. 1/8" = 1'-0" Invert the fraction and multiply by 12. 8/1 x 12 = Scale Factor 96; To convert an engineering drawing scale to a scale factor: Select the desired scale. 1" = 20' Multiply the feet by 12. 20 x 12 = Scale Factor 240
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
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.
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.
It’s important that you understand how to read the various scales of architectural and engineered drawings. You will learn the following in this section. How to read an Architectural scale (mostly used for buildings in the U.S.). Architect scales, such as 1/4˝ = 1´-0˝ (1/48 size) or 1/8˝ = 1´-0˝ (1/96 size)
A Free PDF for Drafting Scales & Sheet Sizes 1/16/2019 I've been told that memorizing the ANSI and ARCH drawing sizes along with architectural scales & their scale factors is a part of the first day of any drafting program.
A scale factor represents the ratio of change between a drawing and real-life dimensions. Typically, it is a unit-less value. For instance, a scale factor of 48 (or 1:48) indicates that one unit on the drawing represents 48 of the same units in real life.
Changing from one scale to another seems like a complex task, especially if you need to convert from an architectural scale to an engineering scale. The trick is to use the Scale Factor, which appears in our CAD Scale Factors article. The scale factor is used to compare the scales to each other.
Draw HVAC diagrams online with this Google Drive drawing tool. Convert lengths areas between different mapping scales. Draw P&ID diagrams online in the browser with Google Docs. ISO vs. U.S. and Canadian drawing sheets. ISO 216 A, B and C drawing series - dimensions of regular, oversized and envelope sheets.
In architecture, scales and scale drawings allow us to accurately represent sites, spaces, buildings, and details to a smaller or more practical size than the original.