In the past two or more decades there has been an intensive shift by engineering companies towards whole-product lifestyle support and collaboration. As a result, it has become increasingly important to capture knowledge and information and to record experiences that relate to previous design and the subsequent stages of the lifecycle of products to be able to retrieve and reuse information.
As digital technologies have developed rapidly, annotation and markup have become increasingly important tools in the industry. There are numerous techniques in use for different applications and digital items including text documents, 2D images, and 3D models.
A particularly important element is that increasingly, many projects involve designers and other professionals who are located in different, even disparate, locations. The challenge is for them to be able to work together, not necessarily physically, but by using technologies that support engineering design.
By adding annotations to design drawings, engineers are able to communicate with their colleagues and provide them with commentaries, additional descriptions, and interpretations of different viewpoints. Markup is regarded as a type of annotation that is formally structured.
We can apply redline markup (Hand Markup) in various different formats, providing the markup files as scanned images, hard-copy drawings, drawn with markup written by hand, or in an Adobe file.
Redline or hand markup is commonly used to mark-up corrections on existing architectural drawings that relate to engineering designs. It provides an ideal tool to coordinate the drawing review process among the various stakeholders, including structural engineers, MEP professionals, and the various contractors who are involved in the project.
Drawing its name from the traditional hand-drawn technique of using a red pen to indicate corrections and changes on plans, drawings, and other construction documents, redline markup is an invaluable tool.
However, redline engineering drawings are challenging and it is essential that they are planned and executed so there aren’t any unnecessary delays that might affect the construction process.
While redline markup is often used to make corrections to drawings, it is also used to improve drawings and to add effective resolutions when problems have been detected. Markup in the form of annotations also allows stakeholders and team members to contribute their input.
Redline and hand markup is also used to identify areas of conflict, for instance when we undertake clash detection/resolution services to streamline construction processes and reduce the financial and other on-site risks that might result.
Redline markup on drawings helps the professional construction team to envisage the correct plans. They also constitute an effective means of preventing the need for rework during construction – which effectively saves time and money.
Markups are often provided in sketches and we design according to these or as the details are shown in other Redline markup documents. Clash detection and clash resolution are other services that we provide, to prevent issues that might impact on projects at a later stage.
Not that long ago, the markup required was done manually on plans and drawings. It was an accurate process but time-consuming. Over time, there has been an increase in semi-automatic and automatic methods, including those that we can convert to AutoCAD and Revit with relative ease.
Early conventional markup was implemented with in-line notations that were merged into text documents. Like contemporary hand markup, this type of markup is noticeable because the annotations are a different color to the original text, usually red. Although easy to implement, if the markup is embedded in the document, it often changes the way the document appears, and it can interfere with other sets of markup.
Another relatively early method of markup, known as stand-off, involves separate external documents that reference or point to the element within the text document or digital object to which it refers.
One advantage is that multiple markup layers can be added to documents and/or digital models allowing them to expand without changing whatever representation method was used for the original object. This makes it a good tool for updating information throughout the lifecycle of a product. Another is that different viewpoints can be incorporated, which is invaluable since there are often multiple different opinions and ideas on how work should proceed.
The disadvantage of stand-off markup is that it is difficult to implement and persistent references can be problematic.
As 3D digital product models have continued to dominate industry design, the markup for computer-aided design (CAD) has become increasingly sophisticated and more reliable. For example, designers can navigate and markup models in Autodesk Viewer if they are using Design Web Format (DWF), for instance in Revit.
Our skilled team can apply redline markup to plans and drawings. But to be able to review the drawings, it is essential for hand markups to be correctly incorporated into AutoCAD or Revit drawings. The highly qualified engineering team at NY Engineers prepares design drawings in CAD and Revit and we are available to convert from scanned images, hard copy drawings, hand-written markups, or redline markups that have been created in a variety of other programs.