Update technical drawings

book/design_workflow/general_drawing/technical_drawings.ipynb

@@ -6,8 +6,112 @@
    "source": [
     "# Technical drawings\n",
     "\n",
-    "\n"
+    "## Size and header\n",
+    "Paper size can vary from A4 to A0. Most of the time A3 is chosen. Draw a\n",
+    "frame which does not touch the edges of the paper.\n",
+    "\n",
+    "```{figure} Images/General drawing 1.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Header\n",
+    "The header contains information on the drawing, drawer, scale and units.\n",
+    "\n",
+    "```{figure} Images/General drawing 2.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Layout\n",
+    "A technical drawing contains a minimum of three elevations or corsssections. The elevation containing most information is placed a the top left position. The other elevations are now determined with third angle projection (Dutch: Amerikaanse projectie). If\n",
+    "additional elevations, sections or detail drawings need to be added, they are placed at the bottom right corner of the paper.\n",
+    "\n",
+    "```{figure} Images/General drawing 3.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Scale\n",
+    "Only scales 1:1, 1:2 and 1:5 or multiples of 10 of these are allowed. Always try to draw the object as large as possible on the chosen paper.\n",
+    "Remember however that also some space will be used for dimensions and text. If one or more elevations (details!) have a different scale, mention this in\n",
+    "the title below this particular elevation. \n",
+    "\n",
+    "```{figure} Images/General drawing 4.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Contours\n",
+    "With a pencil grid lines, centre lines and datum lines can be drawn. After this, draw the contours of the object. If necessary, some changes to the layout\n",
+    "or scale of the drawing can be made.\n",
+    "\n",
+    "```{figure} Images/General drawing 5.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Objects\n",
+    "The object is drawn in detail.\n",
+    "\n",
+    "```{figure} Images/General drawing 6.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Dimensions\n",
+    "How? Dimensions are indicated by a dimension line and two auxilairy lines indicating the length to be dimensioned. The intersection\n",
+    "between the lines is indicated with a little diagonal line, dot or arrow. The auxilairy lines do not touch the object. The value of the\n",
+    "dimension is written in the middle of the dimension line, but can be placed on a leader if there is a lack of space. Heights are usually\n",
+    "measured in relation to a reference level and are indicated with an arrow. The units used depend on the size of the object, but can only\n",
+    "be: micrometers, millimeters, meters and kilometers. What? Only the dimensions necessary to understand and built\n",
+    "the object need to be shown. Where possible, use centre lines. Where? Place dimensions as much as possible to the right and below\n",
+    "the elevation which shows the important component the clearest. Deviations of this ‘general rule’ are only allowed if this clarifies the\n",
+    "drawing. If multiple dimensions are shown on one line, a summation must always be added, with an extra dimension line.\n",
+    "\n",
+    "```{figure} Images/General drawing 7.jpg\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "```{figure} Images/General drawing 8.png\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Hatching\n",
+    "To indicate used materials cross sections are hatched. See gd|b for different types of hatches. Note that the hatch to be used depends\n",
+    "on the scale of the drawing. If two components meet which must be hatched in the same way, the hatch is rotated 90°. This is only applicable to\n",
+    "hatches consisting of diagonal lines.\n",
+    "\n",
+    "```{figure} Images/General drawing 9.jpg\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Lines\n",
+    "Now the different lines in the drawing need to be given the correct thickness and type. For an overview of the different types and thicknesses and\n",
+    "their applications, see the lecture notes on Technical Drawing.\n",
+    "\n",
+    "```{figure} Images/General drawing 10.jpg\n",
+    "---\n",
+    "scale: 100%\n",
+    "---\n",
+    "\n",
+    "## Text\n",
+    "Finally, if necessary with the aid of leaders, texts are added. Elevation titles need to be placed below the object, aligned to the left. If this\n",
+    "particular elevation differs in scale of the rest of the drawing mention this in the elevation title. Do not use abbreviations in titles.\n",
+    "\n",
+    "```{figure} Images/General drawing 11.jpg\n",
+    "---\n",
+    "scale: 100%\n",
+    "---"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": []
   }
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