Quantity take offs play an important role in the decision-making process in construction. It is an in-depth estimate of all the inputs required for a construction project. It requires a highly specialized skill set to do data management correctly.
Quantity takeoff and cost estimating plays a crucial role in a construction project. These crucial steps in the project can make or break success. The key to successful construction data collection is carefulness and accuracy.
What is a quantity takeoff?
What is quantity takeoff in construction? A very popular question indeed consists of the early part of the bidding process that dictates the amount of work that will be needed for a certain project. It includes all the material requirements for a project, as well as the labor and equipment required to complete the project. It doesn’t include construction costs, it is concerned with only quantifying the work and resources required to complete a project.
Many people are involved with quantity takeoff, including contractors, architects, and engineers. It’s an initial step in calculating the scope and cost of a project. After a takeoff has been finished, the cost estimator uses the information to create a proposal for the project.
Manual vs digital takeoffs:
Manual approach: The manual approach needs the estimator to look at blueprints and measure all of the materials and surface area for the project. This approach requires good experience and precision to estimate the materials and labor with this approach and it is very time-consuming.
Digital approach: This approach allows a better chance of getting accurate data for quantity takeoff. Takeoff software can be utilized to read blueprints and then it can glean the material needed for the project. This software helps in reducing the risk of error.
Elements of quantity takeoff:
Quantity takeoff services are not easy to perform and a great deal of calculation is involved in it. Following are the different types of measurements you will need to carry out.
Unit count: It is the initial takeoff task, estimators will count single items in this, such as light fixtures, handles, and sinks. Later on, you can calculate the total unit figures and multiply them by the unit price to get a total.
Linear length: Now you will have to calculate the linear length of materials like pipes and lumber. Estimators can add up the linear lengths of materials and add a total value to them. You can extrapolate the length needed based on the blueprints.
Surface area: This is a two-dimensional task. Materials like flooring need an estimate of the surface area. The equation is the height of the area multiplied by the width.
Weight: A quantity takeoff also includes the gross weight. It involves calculating construction by weight, which is necessary when accounting for transportation costs.
Cubic volume: This is three-dimensional, materials like concrete or earthworks are calculated by cubic volume. The formula is length multiplied by the width and by height.
All in all:
Quantity takeoffs help with more accurate cost estimates. It also helps with winning clients as you can provide your client with a detailed quantity takeoff which will help them make an informed decision. This extra work helps your client make smarter decisions and adds value to the project and makes sure that everyone stays on track with the deadlines and budget.