Pre-requisite - road corridors and intersections have been created in your DWG in the supported road corridor format
Allsite.ai will soon release a feature to automatically build corridors, intersections and cul-de-sacs!
Road Settings (Allsite.ai)
Default road grade data is inherited on project creation. These will be used as default parameters when the road type is changed within your Civil 3D model. By default all road corridors created will inherit the LOCAL road type longitudinal settings, and can be changed on each road region within the corridor.
Editing road settings (i.e. longitudinal grade) per road
After Corridors, intersections, knuckles and cul-de-sac's have been created you can go in and customize longitudinal grade information and other information on the Civil 3D Assembly for each region.
Select the Assembly and edit road settings
Road tangents can be overridden at road-earthworks extent boundary by editing the road alignment feature extended data.
If you want your road to interface with a future stage (and existing ground does not match the levels the future stage will be at) you can 'pull back the earthworks extent' - this gives Level AI room to interface the levels with existing ground.
Remember to add a overland flow path between the road and the earthworks extent if you pull back the earthworks extent - this tells Level AI that the road can drain out via earthworks extent (i.e. be a low point)
Road Settings (Applied to Assembly)
Note - you do not need to configure settings on curb return assemblies. Intersection grade information is defined elsewhere.
Setting | Description |
Road Category | This maps to the settings configured for you Allsite.ai project on the web. Changing the type will revert most longitudinal grade parameters to the projects default. |
Network Placement | Informs Service AI where services can be applied within the road corridor. This will inherit network placement settings if they are configured in your Allsite.ai project in the web. |
Design Speed & Vehicle | This defines the dimensions of the vehicle. This is not used by Level AI and will be used for future layout assist tools. |
Min/Max Grade | Defines the bounds that Level AI will vary the design to meet requirements. It is recommended to not over constrain the grade to give Level AI ability to grade. |
Max K and Min Sag K, Crest K | Defines longitudinal bounds for the road to be designed with. |
Modifier Settings (Applied to Sub Assembly)
Setting | Description |
Pit spacing | Informs Service AI of the spacing of catch basin / catch pits along the road. |
Network offsets | Informs Service AI where services can be placed relative to the curb. |
Alignment Settings (Applied to Alignment)
Setting | Description |
Start/End Tangent Elevation Override | Override for the road tangent at connection to earthworks extent. If defined, a Start/End tangent grade is required as well. If not defined uses existing ground elevation at road-earthworks extent boundary. |
Start/End Tangent Grade Override | Override for the road tangent grade at connection to earthworks extent. If not defined uses the grade of existing ground at road connection (samples 2 points at road-earthworks extent boundary 2 foot apart) |