Prerequisite: DWG linked to Allsite.ai project see here
Workflow (Level AI)
Configure default settings on project in Allsite.ai
Ensure a correct coordinate system set.
Select the existing surface for your site.
Create road corridors and intersections and update any longitudinal grade information on the Assemblies.
Note supported methods to create corridors and roading elements here.Add parcels, set type for residential parcels to NORMAL
[optional] Add existing network (sanitary and storm) and set status to "IN" (existing) and set invert levels (this informs Level AI how to grade ground for gravity networks to work)
Add your Earthworks Extent, this tells Level AI where it can excavate ground.
Add other Level AI grading elements (see Allsite objects below) such as grade breaks, ponds, overland flow paths, buildings. If you already have the elements within your DWG you can just select the item and 'convert' it.
Now you are ready for your first Level AI Run!
After your run and results you can add more grading elements and add potential grade breaks into your model before your next run.
Default Level AI settings
Your DWG will be linked to a project on Allsite.ai. The settings define defaults for a lot of Civil 3D and Allsite objects. To view the default settings apply the Level AI filter on the project properties -> Settings tab to view all settings related to Level AI. Details on respective Level AI settings provided on detailed grading pages.
Existing Surface
Set your existing surface, it should have at least a 7 foot buffer from your earthworks extent. The Level AI run works with the existing surface trying to modify it as little as possible but still achieving balance and engineering constraints for design. The more accurate your existing surface the more accurate the balance of your site.
Setting up Coordinate system
Level AI models require accurate spatial information - use the MAPCSASSIGN command to configure the coordinate system of your DWG. You can additionally provide Grid to Ground offsets in your Allsite.ai project settings (this is so project thumbnail and 3D digital twins show in the correct location).
If your data is not spatially located within 20 miles of where the project was created on Allsite.ai it will fail validation.
Allsite.ai Objects
Allsite.ai works natively with Civil 3D objects, when the Civil 3D objects are created, Allsite.ai data is appended as extended data:
Parcels - Grading and servicing data added to Parcel object
Road Corridors - Road longitudinal information added to Corridor regions via Road Assembly objects
Gravity Pipes - Additional information required for Service AI and Level AI added to Pipe and Structure objects
Additionally there are Allsite.ai objects that can be added to your model. These can be either created from scratch (does this if no item in model selected) or converted (if item selected) - only the right type of item can be converted (ie grade break -> must be a polyline, building -> must be a closed polyline / block ref with closed polyline)
Earthworks Extent - Defines boundary of your Level AI model
Grade Break - this could be either a wall or a slope
Ground Control - Allows custom control of areas of ground (grade, locking, etc)
Grading Relationship - Define relationships between objects in your Level AI model
Manual Feature Lines
Impervious Proposed - Define areas of impervious surfaces (roads, driveways, sidewalks) and their grading
Lots
Buildings - Add buildings to your model
Building Tie Ins - Add on the edge of a building for fine control of garage interface
Drainage
Ponds - add detention / retention ponds with sizing
Overland Flow Paths - inform Level AI where low points can be in the roading network.
Geotech
Geotech data points - bore logs that get built into a surface with grading parameters