{"id":25008,"date":"2026-09-09T14:57:07","date_gmt":"2026-09-09T12:57:07","guid":{"rendered":"https:\/\/biblus.accasoftware.com\/en\/?p=25008"},"modified":"2026-09-09T14:57:09","modified_gmt":"2026-09-09T12:57:09","slug":"red-line-vs-as-built-drawings","status":"publish","type":"post","link":"https:\/\/biblus.accasoftware.com\/en\/red-line-vs-as-built-drawings\/","title":{"rendered":"Red line vs as-built drawings"},"content":{"rendered":"

Redline drawings and as-built drawings are useful for updating projects after changes during the construction phases. Read the article and find out more<\/p>\n

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During the construction phases, a project can end up going through major organisational changes. Safety measures may need to be tweaked up and so document keeping and auditing need to be managed appropriately with methods that can highlight these variations.<\/p>\n

In this article, I’ll go through the details of two main solutions used for work variations management<\/strong>. To be able to address and resolve any type of inconvenience that may arise and also improve collaboration with colleagues, I really recommend this free BIM management system<\/a>.<\/p>\n

What does redline mean in construction?<\/h2>\n

During the execution phase, in general, a project can undergo substantial changes. These changes need to be recorded in official documents and correctly stored too. The redline<\/em> represents all these different changes as they become necessary during the construction stages.<\/p>\n

Redline, as a change annotation and highlighting method, comes from the traditional red pen mark ups used on old paper drawings to underline errors and\/or corrections: still considered an efficient way of drawing immediate attention to updated info or notes on technical documents because where there’s a red outline or a note, you know that there’s some sort of change notice there.<\/p>\n

It’s always good pratice to discuss the need to introduce changes with the project manager to avoid communication gaps and errors. In some cases, work variations that may not comply with local or national legislation so it’s always a good idea to analyze possible solutions in ccordination with the technical board.<\/p>\n

Redline indications and relating guidelines should always be added to the official designs and construction documentation with clear descriptions so as to obtain an as-built drawings<\/strong>\u00a0that fully reflects reality.<\/p>\n

What are as-built drawings?<\/h2>\n

Let’s see more about the different forms of graphical representations and take a closer look at what as-built drawings actually are<\/em>.<\/p>\n

As-built drawings are official drawings drawn up by the technical team and are simply composed of ther original design merged with any required changes identified by means of redlines; they then show how a certain project was carried out.<\/p>\n

These drawings are delivered to the competence offices for validation with respect to the changes made or for those to be authorised.<\/p>\n

Therefore, the correct process is to:<\/p>\n