![]() Level and which are to be sent to the Chief Engineer (Open line or Construction) for approval. Chief Engineer (Open line) will drawings will be If part of the information necessary has to be supplied by the Chief Engineer's office or by an officer of another Department, the Divisional Engineer should obtain and incorporate the details on the drawings.Į) In general, all plans will be initiated at the Divisional level. The fact should be so stated such drawings need not be reproduced. To a standard plan or to an existing drawing, Reference may be made to IS:696-1972 'Code of Practice for General Engineering and to special publication SP46-1988 issued by Bureau of Indian Standards for engineering drawing practice.ī) Wherever drawings are prepared in computer compatible media, adequate care shall be exercised in maintaining back-up copies and installing security systems.Ĭ) Standard drawings shall not be departed from without the specific permission of the Chief Engineer. Railways Code for the Engineering Department (1993).Ĭhapter II - "Modes of Investigations of Railway Projects".Ĭhapter IV- "Engineering Surveys -Reconnaissance, Preliminary and Final Location Surveys".Ĭhapter V - "Engineering Survey - Project Report, Techno Economic Survey Report and Feasibility Report." shall be prepared inĪccordance with the provisions in the following chapters of the Indian If you have not worked with accurate measurement, spend some time studying it.A) All plans such as Index plans, Index sections, yard plans etc. If you can measure accurately in full scale, you may want to skip ahead. ![]() The first measurement exercise will be with full size. Rules of this kind are usually divided into 1 /16” or 1 /32” units. Full Scaleįull scale is simply letting one inch on a ruler, steel rule, or draftsman’s scale equal one inch on the actual object. Since each occupational group has their own frequently used scales, some practice or basics review will help you to work with the scales used in your technology. There are numerous scales for different needs. After all, who wants to carry around a full size drawing of a locomotive? Obviously, with an object as small as a wristwatch, it would be necessary to draw to a larger scale.Ī machine part, for example, may be half the size (1/2”=1”) a building may be drawn 1/48 size (1/4”=1’-0”) a map may be drawn 1/200 size (1”=100’-0”) and a gear in that wristwatch may be ten-times size (10”=1”). This is done primarily for the convenience of the users of the drawings. In mo.st cases, if it is not drawn full size, the drawing is made smaller than the object. Scale MeasurementĪ drawing of an object may be the same size as the object (full size), or it may be larger or smaller than the object. If you need a dimension that is unclear or is not given, do not measure the print! Since prints shrink, stretch, and may not be drawn to scale, you can easily come up with some very inaccurate dimensions. Whether or not you need to review these fundamentals, there is one important thing to remember about getting measurements from a print. Others, who have had more experience, may find these exercises a worthwhile review. Since some students have had little need to measure accurately, these exercises will provide the practice they need. This section is intended as a review of the fundamental principles of measurement. The ability to make accurate measurements is a basic skill needed by everyone who reads and uses blueprints.
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