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OST 3.98 - 06.07 Drawing Attachment Takeoff (Using Attachment Conditions to Count Windows, Doors, Lightboxes, etc.)

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Attachments are special Count objects that attach to existing Linear or Area takeoff objects (referred to as a Parent objects) and usually affect the quantity results of the Parent Condition. Attachments cannot be takeoff off separately, they must be attached to a parent. See Related articles for details on setting up your Attachment Conditions.

Perform Attachment takeoff by selecting an Attachment Condition from the Condition List window then clicking on a linear or area takeoff object to attach the Attachment to its Parent Linear or Area takeoff object.

Attachments Rules

Linear Attachments and Parents

  • For Linear Objects, the Attachment must fit horizontally on the linear object. 
    • For example, a 4' wide attachment cannot be placed on a linear object that is only 3' long although a linear Attachment can exceed the height of the linear object to which it is attached (it is acceptable to place an 9' tall door on a 8 foot linear because the height of the linear may not be the height of the entire wall, just the finished wall).
  • Attachments cannot be placed on a Linear segment set as a "Curved Segment" (even if you haven't curved the segment). You can simply remove the "Set as Curve Segment" for the particular takeoff object, if it hasn't been curved, and then place the Attachment.

Area Attachments and Parents

  • For Area Objects, objects must fit completely within their parent object. 
  • There are additional considerations to keep in mind, as shown in the example below, when an attachment is placed on an aligned grid - the attachment may not match the grid alignment. Use the Rotate Takeoff function to rotate the Attachments to the grid. Also, when a grid is aligned, sometimes, the attachment objects no longer snap to the grid. Turn off Snap to Grid on the Advanced tab of the Attachment's Condition Properties, then hold down the <Shift> key and move the Attachment anywhere within the gridded area.

Linear Attachments Overview Video

Area Attachments Overview Video


See the Related Articles for examples of how Attachments are treated when you copy and paste their parent objects.

Drawing Count Takeoff using AutoCount Negative Takeoff



Product documentation (user guides) describes functionality in the latest version of each major release and may not match the functionality in the version you are using. Please check the Product Information and Downloads pages by clicking one of the product buttons above.

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