Geometric Datum
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Co-ordinate Reference systems are used to facilitate the definition of spatial data using the most convenient reference system and thus avoid complex error-prone transformations.
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Three types of co-ordinate systems ( Cartesian, Cylindrical and Spherical) can be defined. Each system can have its own origin and orientation as defined in relation to the Global system or any other previously defined system
Pro/Bridge-Geometry allows the user to define points in a manner that is familiar to bridge engineers. Points can be defined in sets in one of the two ways:
1- Points can be defined directly by specifying their co-ordinates relative to any defined reference system of co-ordinates, or indirectly as an offset from an existing reference location.
2-Points offset from profile control & chainage alignment. The points defined using this feature are very useful for bridge and highway engineers. It allows them to define the location of working points to locate road alignments or a structure relative to an existing highway alignment and profile. It can also be used to define vertical and or horizontal clearance between structures and/or road boundaries.
| Co-ordinate systems | Points offset from a point | Points offset from Alignment | 3-D Display of points | F. E. Mesh Generated using point offset on alignment |
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