ROADS MODULE

The civilcad Roads module incorporates all the facilities you need to design a simple rural road or accomplish an intricate design for a multi-lane divided highway. The module is equally adept at handling the most complex road reconstruction project.

You can use a wide range of data entry methods to define the existing surface on which the road design is based. Simple plotting parameters specify the longitudinal and cross section formats to suit your own requirements.

3 PANEL VIEW

The Roads module uses a 3-panel view displaying the alignment, long section and cross section on the same screen.

DATA ENTRY

The horizontal alignment of a road is defined in the Survey view. Data is computed for each curve from arc radius and spiral / transition settings. The intersection point of the curve can be dragged to a new position if required. The natural or existing surface can be defined from cross sections and profiles extracted from a triangular model, 3D stringlines, XYZ field data or level -book data entry.

LONG SECTION DESIGN

Vertical alignment design is possible for multiple strings with templates applied to any of the strings. Options for creating and editing the new formation levels include defining vertical curves by chainage and level, grade, or intersection of grades, with the provision to edit IP's interactively. Vertical curve design includes speed and sight distance factors.

CROSS SECTION DESIGN

Design is achieved using templates. Templates may be defined for each job or stored in a library. Template changes are achieved by the use of tables to define super-elevation, lane widening, and centre line shift on curves in accordance with road authority standards. Separate tables are used to define table drains, verges, and sloping, fixed width or compound batters. Multiple subgrade surfaces may be defined to represent the various material layers required in road construction.

ROAD RECONSTRUCTION

civilcad utilises multiple strings for designing the upgrade of existing roads. Levels along any string may be computed from existing surface levels by extending the crossfalls to the new design string. This feature is ideal for widening a road, as well as for the design of multi-lane roads or site design. Further options are able to compute minimum depth overlays for shape correction and sealing of existing roads.

PLOTTING

Long section and cross section drawings are created and linked to the design data; these drawings can be automatically updated as the design is modified. A unique feature allows the user to fine tune the layout parameters within the drawing, to ensure that the long section and cross section data fits effectively on to the chosen paper size with all the required information.

FINAL SURFACES

Volume reports display the cut and fill for the multiple surfaces at each cross section as well as the totals; the report includes options for topsoil stripping and volumes between nominated strings.
Final design strings are coordinated in the Survey View together with a design surface model.