This makes it easier to bridge in and work with other stakeholders on future plans. Quantity Takeoff. To prepare the takeoff, an estimator has to break down the design shown on the drawings and described in the specifications into predefined activities or work items that correspond to the operations the contractor will perform to complete the work of the project. However, unlike cost estimating services reviewed below, takeoff software can be expensive and also time-consuming to learn and master. Many cost estimators also maintain a catalog of standard items representing activities that will be encountered on a large variety of projects, but it’s not uncommon to have to take on a new category of work unique to a particular project. Estimation Takeoff Examples: Structural Slab Example Take Off [12kb] Structural Slab Example [1.1mb] The Process Summarized. The catalog of standard work items is often used as a checklist during the takeoff process, especially by junior estimators to ensure all the general categories of work have been factored into the estimate. The third and newest method for developing a quantity takeoff is enhanced cost estimating services, which combines the power of artificial intelligence with experienced estimators to provide the benefits of both manual and digital methods for takeoffs.Here we briefly describe three primary methods for creating a quantity takeoff: manual, digital, and estimating service:The detailed estimating method outlined above is far more likely to produce a price that accurately forecasts the actual costs of building a construction project than just a quantity takeoff, but the quantity takeoff provides the necessary foundation for an accurate work assessment and this accuracy can only be achieved if the project owner provides an estimator with a defined scope of work in the form of drawings and specifications. The confusion regarding quantity takeoff stems from the fact that takeoffs are often referred to in the industry by many names, and these names are used interchangeably even though they can refer to different things:For example, although materials takeoff and quantity takeoff are most often treated in the industry as identical processes, they’re actually two different processes that should be distinguished from each other.There are obvious downsides to preparing a quantity takeoff manually, which include a lag time when procuring the physical plans in order to start the takeoff process, the wasted time when having to manually enter measurements onto a paper worksheet or software program, and finally reduced accuracy. One downside to a tablet digitizer is that due to the enormous size of the drawings needed to be scanned, a cost estimator may need to use a tablet as large as 42” by 60” to ensure all drawing information is accessible at once. Measuring by assembly avoids needless repetition and actually speeds up the process because no time is wasted reassessing the component, repeating the dimensions and possibly recalculating these same dimensions several times. The basic takeoff process is as follows:Lynn Langmade currently manages content at 1build where she develops content strategy, sets the editorial calendar, and oversees content production workflow. Short wall length in-to-in = c/c length – 1/2 breadth on one side – 1/2 breadth on the other sideLong wall (out-to-out) = c/c length + 1/2 breadth on one side + 1/2 breadth on the other side= c/c length – one breadth.Calculate the quantity of excavation for the given plan using centreline method?“ L “ Junction – There is no need to deduct from total centreline length.Length of long wall measurement decreases while length of short wall measurement increases, when notice the measurements from foundation to super structure.Depending on the shape or design of a building the method of taking out quantities also varies. You register for a new account by clicking the register link. Here, I describe the more common methods of taking out quantities in the construction field. Depending on the shape or design of a building the method of taking out quantities also varies. While the assumption has always been that there are only two methods for developing a quantity takeoff, the advent of artificial intelligence has challenged that assumption, enabling a new method of producing takeoffs that increases speed and accuracy while also leveraging indispensable insights from trained estimators with years of experience.