The As-built Digital Twin

What is the As-built Digital Twin?

As part of the Final Verification Scan, a series of images are produced from the digital twin engine to provide a 2D representation of the state of construction during the scan.

What can the digital twin be used for?

  1. As-built documentation: You will no longer have to rely on a back-of-the-napkin sketch to communicate variances of the field-conditions against the plans. The digital twin is an actual to-scale representation of the entire deck prior to the pour, which can be used to verify the location of any built element. Therefore it can be used as the as-built documentation that is handed over to the building owner at the end of the project. It removes the need to manually draw all of the field changes over the lifetime of the project, saving your team time and money.

  2. Virtual window into the site: If it’s not possible to be on site when an on-site decision is required, you can use the following functionalities to help your team make accurate, time-sensitive decisions.

    1. The various layers (explained below) can be turned on and off to assist with viewing the field data.

    2. Measurements and markups can be done directly on the digital twin (since it’s to-scale), helping communicate required changes to the field team.

  3. Insurance against legal liabilities and disputes: The timestamp provided on every as-built digital twin provides your team with a snapshot of the deck. This can help to settle disputes regarding any deviations/omissions/etc.

  4. Substitute for x-ray scanning: In the event that an additional core needs to be drilled post-pour, or a client would like to renovate/refurbish their space, the digital twin allows you to see where all of the rebar/PT tendons have been placed. This helps your team drill confidently into the deck without the need for costly x-ray scans. The digital twin allows you to see where all the rebar/PT tendons have been placed, in the event that an additional core needs to be drilled post-pour. It helps your team drill confidently into the deck without the need for costly x-ray scans.

What are the different layers contained within the digital twin?

Each digital twin includes any of the following layers

  1. Construction plans: The plans that were provided by your team for inspection. (The structural plans are shown by default but any disciplines can be requested)

  2. As-built digital twin: A high-resolution snapshot of the deck prior to the pour. This can be used to verify the location of objects on the deck and can be used in conjunction with the plan overlay to verify that all elements have been properly installed.

  3. The DSM heat map: A high-resolution snapshot of the deck that shows the elevation of each pixel on a color scale. This is especially helpful for verifying the location of changes in elevation such as slab edges, beam pockets, drop panels, grade changes,

  4. ramps etc

Changing Layers in the As-built Deliverable

The as-built deliverable utilizes the layers functionality within the PDF so you can switch between the different image types.

These can be accessed in either Adobe PDF Reader or Bluebeam in the following ways:

BlueBeam

1. On the left-hand side of the window, you can access the layers by clicking on the following icon

Bluebeam Layers.png

 If you do not see the layers symbol you can add it to the tool-bar by typing ALT+Y or accessing the available panels from the Window menu

2. This will open the layers pallet and by clicking the eyes next to each layer you can turn them on and off

Bluebeam turn layers on.png

3. Only the Image Ortho is turned on (Default View)

Bluebeam-Pointcloud.png

4. The DSM and Concrete plans have been turned on together

bluebeam DSM.png

Adobe

1. On the left-hand side of the Adobe window, you can access the layers by clicking on the following icon

2. This will open the layers pallet and by clicking the eyes next to each layer you can turn them on and off

Adobe Ortho.png

3. Only the Image Ortho is turned on (Default View)

Adobe DSM.png

4. The DSM and Concrete plans have been turned on together.

You can do this with any combination of plans/images that have been loaded into the PDF as noted in the bottom right-hand corner of the title block

Plans-Images List.png