Electrical takeoff before starting the actual installation process or even hiring a contractor is a very wise decision. The electrical work contains many small and large tasks, and according to that, you have to buy materials. It is always better to plan the project through cost estimation. What cost estimation does is that it generates a list of materials that will be used in the process. This is how you can avoid missing any important material when buying. It saves time because not having the material on time can slow down the installation process. 

 

In real-life projects, delays often happen when takeoff is not done properly. You need to be a professional with proper experience to do an electrical takeoff. Infact any sort of takeoff needs a skilled person to carry it out. There are several material takeoff services in the market. But it is the job of the client to find the one who has more than just skills. Prior experience in the same line of work is something that is also important. This article discusses common mistakes that can happen while doing takeoff. 

 

Electrical Takoeff Explained:

In simple words, it is a process where the estimator analyses the project in the context of the material that will be used in it. This step must be carried out in great detail so none of the material is left out of the list. Once the list is ready, it helps the contractor and the related entities understand what si requirement of the project. You can buy material in one go and do not have to worry about a material being missed while the installation process has started. Even the smallest materials are listed down during this process like

• The nails
• The wires
• The fixtures
• Switches
• Boards 

These are the basic materials, but there is much more to this list. This list also helps in determining the cost that will be required to execute the electrical system installation process. 

Common Mistakes One Must Not Make:

• Not Reviewing the Drawings:

• Electrical drawings should be reviewed properly because there is detail about every single wire in them. The paths are clearly defined so that installation becomes clear and easy. And even the maintenance staff benefits from these drawings if the contractor ensures that the drawings are followed down to each detail.
• Another reason why mistakes happen in electrical takeoff is that people do not focus on drawings other than electrical drawings. MEP drawings are all equally important. It is better to review the other drawing at least once to confirm that the electrical plan does not intersect with other systems.  

What You Can Do:

• Cross-check all the plans carefully. 
• Coordinate with other professionals. 

• Ignoring Revisions:

It is very common that the drawings do not get updated, or the contractor mistakenly starts working with older drawings. Those drawings have incorrect information.  

What You Can Do:

• Always check if the drawing you are working with is the latest one. 
• Highlight revisions very clearly on the drawing to avoid confusion. 

• Incorrect Cable Length Calculations:

It is important not to rely just on straight-line distances but also to take real-world situations into consideration. Any obstacle or bends can increase the length requirement of the cable. 

What You Can Do:

• Include vertical measurements 
• Add waste factors because it is a genuine requirement 

• Overlooking Small Components:

In electrical work, you need grounding materials and other small components, such as fixtures. Overlooking these expenses because they seem like small expenses can be a bad decision. These things have a high combined cost. 

What You Can Do:

• Make a checklist so you can keep marking the items.
• Break down the entire system into small tasks and then identify materials in it. 

• Misinterpreting the Symbols:

The professional who is working on the material takeoff must be well aware of how to read blueprints. There are symbols and legends on it that need to be interpreted as they are. They have means that must not be changed. 

What You Can Do:

• Hire an experienced expert for the job.
• Re-check the drawings. 

• Ignoring Labor Impacts:

If the labor is working on a spot where it is difficult to reach, such as a high ceiling. They will also need a ladder. These small things should also be considered for a precise and accurate electrical takeoff. 

What You Can Do:

• Consider accessibility issues
• Coordinate with project engineers if necessary 

 

How Professional Services Reduce Errors:

• The chances of errors are low because they properly review drawings.
• System-by-system breakdown of materials 
• Detailed quantity summaries

 

Conclusion:

Electrical takeoff is more complex than just counting the number of wires needed or the number of fixtures that will be used. The electrical takeoff is something that takes into account even the smallest materials that will be used in the process of installation. It is better to check things twice in every case because it is the simplest yet the best way to avoid issues. Electrical estimation services can be worth getting help from.