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Construction Documentation: Resolving Common Design Rework Issues

Construction Drawings

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On a typical industry job, design rework costs account for between 2% to 20% of the total project contract costs. This can be largely avoided with construction documentation.

Introduction

Most projects end up with several design reworks, costing companies lot of money and time. In major civil engineering projects, costs can go up to 20%. 

Unfortunately, the requirement for rework might not be discovered until a quality check round.

However, some of the most common causes of rework such as omissions and errors, operational changes, fabrication glitches and project enhancements can be rectified on time.

So, how do we nip this problem in the bud?

One of the keys to reducing your project rework costs is to manage your project proactively during the architectural construction documentation phase. This occurs after the design development phase.

Construction documentation includes a set of drawings that provide information about the steps for construction.

These construction drawings are used by contractors to build the required components as specified by the client and the architect.

A basic checklist for proper documentation includes: bid documents, purchase order and construction contract, project diaries, schedule data and devices, and change orders. 

Being conscious of the possible obstacles even before they happen can help save you from reworking.

One way to do this is to actively monitor the design phase of your project. It is comparatively cheaper and worth the effort to lay out all the changes in a virtual model rather than making changes on site.

How to handle some of the major problems and discrepancies that cause rework of construction designs:

  • Issue #1: Is my design even buildable?

    Many reworks happen because the initial blueprint is not feasible.

    Solution

    Ensure that the model is constructible, with details of all the elements that need to be constructed having correct geometric positions.

    Even the most minute of details should be included in the model.

    Fixing errors and clashes in a virtual model for the construction documentation process is cheaper than resolving the errors onsite. For this, we recommend BIM clash detection and/or professional construction documentation services.

  • Issue #2: I think the design is incomplete.

    Let’s call this issue “designer errors and omissions”.

    These are changes and errors in a construction design documentation that are not found until the project has started on site.

    Design deficiencies account for about 40% of all the construction design rework, per research by US Army Corps of US Navy and Engineers.

    As opposed to other types of errors, these deficiencies stem out of ineffective quality control during the design phase.

    The bad news? If your contractor decides to go through with these errors, your project will suffer deadline pushbacks due to incorrect construction.

    The good news? You can do damage control before the actual damage occurs.

    Solution

    Designer deficiencies are the result of faulty construction of plans. Every construction document contains a lot of details that need active focus.

    You can address this issue by setting up a layered quality check. The final blueprints should be cross-referenced with the original requirements by at least 3 people other than the designer.

    Make sure the construction drawings services you hire understand these requirements.

    Learn more about Interior Construction Drawings .

  • Issue #3: The government changed the construction criteria

    Another cause of design rework is the sudden revision on construction standards by government after the contract has been awarded.

    Solution

    While you cannot predict new regulations, it helps to do research before getting started on the project on site.

    Keeping a tab on current trends and past performance of a project on a certain land space helps in reducing rework.

  • Issue #4: This farm and cattle barn were not here until yesterday! How did they appear overnight?

    Well, we’ve all been there. The last inspection of the site never revealed any additional landscaping issues until the actual construction started.

    In this case, you will need to rework the design to accommodate the layout of the latent site.

    Solution

    Common examples of differing site conditions include different soil types, objects found during excavation, and so on.

    Unfortunately, the only solution to this is to put the project on hold. This is due to the fact that your construction agreement already addresses unforeseen circumstances and you owe an explanation to why it happened.

    You can also take the help of a third party to resolve any disputes.

Conclusion

BluEnt helps you reduce your rework in construction documentation with its specialized CAD services. We offer architectural construction drawings, interior construction drawings and more.

We serve homebuilders, real estate developers, custom home designers, and architectural and engineering companies.

Contact us now to get high-quality blueprints for your project!

Maximum Value. Achieved.

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