Methodology
CAD Methodolgy
The method we employ is heads up conversion and thus all final products are to scale and CAD prefect with no broken entities. No automatic conversion methods are used by us. Conversion of course can be selective according to requirements (e.g. only text placed on a raster background, only utilities placed on a raster plan, etc.) Layers and blocks used are according to any in house standards present with our customers.
First, we find out what your CAD standards and specifications are, and then out human operators draw your paper or raster files to CAD just like you want them to be. Our project managers review the conversion work done before delivering the files to you to ensure that all your demands are met.
The main features we provide are:
- Respecting the chain of dimensions, making dimensions that do not fit.
- Distribution of objects on their corresponding layers based on the understanding of many types of drawings.
- Respecting geometrical relations such as perpendicularity, parallelism, symmetry, etc.
- Careful control of types of entities used in the drawing.
- Respecting requested drawing accuracy.
- Providing the same layout for all drawings.
- Using the customer's own block library or building a new one.
Creating a new block library includes:
- Using the customer's paper catalogue, if any, or constructing a new catalogue while processing the drawings.
- A unique name for each symbol following an agreed rule.
- Natural insertion positioning of blocks for easy of usage.
- A scheme of standard dimensions (If applicable), to make symbols interchangeable.
- Use of attributes.
- Modular structure to minimize the number of symbols (If applicable)
- Optimal use of entities to keep files size to a minimum.
- we make your blueprints 100% CAD exploitable.
Procedure
Drawing may be sent to us on Paper, Ammonia Prints or Photocopies. We assure quality by the process we have in place. If any processed drawing os found to be incorrect, we shall redo that drawing without any extra charge.
The process is basically as follows:
- Scan the Drawing
- Convert into DWG (or other) format
- Edit the DWG formatted drawing
- Plot the DWG format drawing on tracing paper
- Compare this tracing with the original
- Re-edit the DWG format drawing if any deviations from the original are found
Quality Control
Light Table Q.C.: To ensure that all paper maps have been fully converted into a digital format. A plot of the digital file is taken and overlaid on the original on a light table. All errors and missing entities if any are marked and sent for rework followed by a screen check.
