For more information on reference files, the Font libraries. Figure 5.3B illustrates several of designer should review the MDT CADD these symbols. Standards or contact a lead CADD operator. 5.3.7 Drafting Levels 5.3.4 Cell Libraries MicroStation allows the user to select different Cell libraries have been developed to allow the levels to input the figure data. Follow the CADD user to call up a symbol, figure, form, Bridge Bureau guidelines as shown in the MDT etc., without the need to redraw it each time. To CADD Standards. obtain a copy of these cell libraries, MDT employees should contact a lead CADD Because units other than the Bridge Bureau may operator. Outside consultants should request a utilize the information contained on the various copy of the cell libraries from the Consultant levels, placement of data on the correct level is Design Section or download them from the essential. Presenting the project data on Internet web site. different levels allows the user to see or print Department’s only the desired data by turning on or off the various levels. Data from other levels will not 5.3.5 Text Sizes be shown. Figure 5.3C illustrates the text sizes that should be used based on the selected drafting scale. 5.3.8 Annotation Guidelines Use of these text sizes will ensure the text size will be shown correctly when it is referenced To provide uniformity from sheet to sheet, see into the main file. the MDT CADD Standards for annotation guidelines that should be used on the Title and Q Sheet and for the other drawing sheets. 5.3.6 Drafting Symbols For plan consistency, the Department has developed a set of symbols that should always be used to indicate certain elements. For symbol uniformity and ease of drafting, these symbols have been incorporated into the Department’s ENGLISH SCALES Text Height When Full Scale Full to Scaled to Scale Scaled Ratio Full Ratio Text Titles LS = 1" = 1" 1 1 1/8" 3/16 " 5/64" 3" = 1' - 0" 0.25 4 ½ " ¾ " 19/64 " 1 ½ " = 1' - 0" 0.125 8 1" 1 ½ " 19/32 "
For more information on reference files, the designer should review the MDT CADD Standards or contact a lead CADD operator. 5.3.4 Cell Libraries Cell libraries have been developed to allow the CADD user to call up a symbol, figure, form, etc., without the need to redraw it each time. To obtain a copy of these cell libraries, MDT employees should contact a lead CADD operator. Outside consultants should request a copy of the cell libraries from the Consultant Design Section or download them from the Department’s Internet web site. 5.3.5 Text Sizes Figure 5.3C illustrates the text sizes that should be used based on the selected drafting scale. Use of these text sizes will ensure the text size will be shown correctly when it is referenced into the main file. 5.3.6 Drafting Symbols For plan consistency, the Department has developed a set of symbols that should always be used to indicate certain elements. For symbol uniformity and ease of drafting, these symbols have been incorporated into the Department’s Font libraries. Figure 5.3B illustrates several of these symbols. 5.3.7 Drafting Levels MicroStation allows the user to select different levels to input the figure data. Follow the Bridge Bureau guidelines as shown in the MDT CADD Standards. Because units other than the Bridge Bureau may utilize the information contained on the various levels, placement of data on the correct level is essential. Presenting the project data on different levels allows the user to see or print only the desired data by turning on or off the various levels. Data from other levels will not be shown. 5.3.8 Annotation Guidelines To provide uniformity from sheet to sheet, see the MDT CADD Standards for annotation guidelines that should be used on the Title and Q Sheet and for the other drawing sheets. ENGLISH SCALES Scale Full to Scaled Ratio Scaled to Full Ratio Text Height When Full Scale Text Titles LS = 1" = 1" 3" = 1' - 0" 1 ½ " = 1' - 0" 1 0.25 0.125 1 4 8 1/8" ½ " 1" 3/16 " ¾ " 1 ½ " 5/64" 19/64 " 19/32 "