Drawing revision is quite common on a project and it is not un-common for a drawing to go through several revisions. This increases the danger in Consultants and Sub-contractors working with superseded drawings. Therefore it is important to have a central repository that shows only the Latest Drawing Revision. The QDMS software application is used by many Companies to automatically maintain only the Latest Drawing Revision in it's master document register. It also makes it easy to transmit the latest drawing revision to consultants and sub-contractors.

Drawing register acts as a central repository for all the incoming drawing revisions in the system. Drawing revisions are classified according to projects and disciplines in the drawing register.

Some of the benefits of drawing revisions are given below:

• Time required to file and retrieve drawing revision is greatly reduced due to central drawing register.
• Drawing register reduces storage space, as all the drawing revisions are stored in the same place and not duplicated.
• Corresponding hardcopy of the required drawing revisions can be printed from the drawing register.
• Drawing register also enables controlled access to all the drawing revisions.
• Distribute drawing revisions from the drawing register – Print or Email with a single click.
• Collaborate drawing revisions from drawing register across all the projects.
• Administrator can get the details of any of the drawing revisions from the drawing register like – which users created, deleted or modified the drawing revisions and when.
• Latest Drawings can also be scanned and included in drawing register. This is useful especially when working with frequently changing drawings.

A typical web based drawing register system, using drawing revisions, is TeamBinder and very good LAN based systems (non web-based) are QDMS and QTRAK.