How Does a Quantity Takeoff Work in Construction?

There is a lot of confusion in the construction industry regarding the term “quantity takeoff”. Here, in this blog post, we are going to debunk the myths surrounding quantity takeoffs by answering the following questions: what exactly do quantity takeoff services entail, how do they differ from materials takeoffs, and how can they be done fast and effectively?

The Best Method for Producing Accurate Quantity Takeoffs

Quantity Takeoffs in Construction 

In theory, construction quantity takeoffs are pre-calculated quantities calculated from drawings and plans incorporated into bills of quantities (355). The construction quantity takeoff services, however, refer to one of the industry’s essential functions during preconstruction: a cost estimator takes measurements from a set of plans to forecast construction costs during the preconstruction phase. In reality, the term takeoff originated from the phrase “taken off”, which means “measured.” Estimators need to take the information “off” drawings to create a list of measurements. Estimators use common contract documents to perform quantity takeoffs. These documents may include architectural drawings, structural engineering drawings, plumbing drawings, site drainage drawings, electrical drawings, and HVAC drawings.  

Here are the basic steps in the takeoff process:

  1. Define the scope of the takeoff. An estimator must be able to answer the question “What must be removed or measured?” by studying plans and specifications. In case of unclear details, the estimator should consult the architect or owner instead of guessing or assuming. 
  2. Take measurements of each item. The estimator should measure each item using the dimensions specified in the plans and specifications without scaling drawings, once they know what the scope of the job is. Drawings that are out of scale are often the result of size changes during the design phase.  Estimators should not rely on scaled dimensions.
  3. Keep track of quantities. Estimators make detailed notes about which sheet each item is located on and where it is located in the building. An estimate also includes a grid reference, the drawing number, and the detail number in a list of quantities. 

Takeoff Methods: Manual, Digital, and Estimating

The takeoff process was traditionally manual. New technologies have changed cost estimating rapidly in the last decade. Computer software or other technology is no substitute for human operators and interpreters producing quantity takeoffs. There are traditionally only two ways to get a quantity takeoff. Still, artificial intelligence challenged that idea, allowing a new way to make takeoffs faster and more accurate and leveraging the invaluable insights of experienced estimators. For a single project estimate, an estimator can use multiple methods. Oftentimes, estimators prepare paper takeoffs before entering dimensions into computers.

Using an estimating service or using a digital quantity takeoff is one way to create a quantity takeoff.

Manual method: 

If construction cost estimators do not use takeoff or cost estimation software, they take a quantity takeoff manually using a spreadsheet. The estimator will review each drawing and calculate the materials during the estimation process. The estimator must therefore be capable of reading and calculating complex mathematical equations and project plans and specifications. To ensure that the estimate is as accurate as possible, the cost estimator must also pay attention to details.

In this day and age, everyone needs professional Quantity Takeoff Services to their quantity takeoffs. Therefore, we are here to answer all your questions if you are among those looking for these services. To get takeoff services, you need to get in touch with the best company that will be able to assist you. When you need accurate services, you can count on the expert team to provide them. As a result, it will be able to meet your takeoff requirements.


By arslan

Oliver James is a professional blogger, content marketer, traveler and entrepreneur. He's a full-time staff writer at zippyholidays, and he blogs about photography. Oliver is an avid reader of books, both fiction and non-fiction and enjoys reading about psychology, business, and self-development. You may Also Like: > cheap holidays > Residential Estimating Services

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