Get the drawings, electronic files are mostly AutoCAD. First of all, you should look carefully, carefully and carefully. A slight mistake in handling will affect the construction.
1, from top to bottom, from left to right.
2. From outside to inside, from big to small, from coarse to fine.
3. See the drawings for comparison, and refer to the construction and equipment drawings for combination.
4. Look at the global basic map first, and then look at the local detailed map.
Two. Description of common symbols and meanings of buildings that need attention
Third, complicated legend symbols and lines.