for students to commence the process of taking-off building quantities. A quantity for each material will be provided, hence why they are called a quantity takeoff. Not accounting for the increase in material costs will impact the profitability of the project. This article will seek to answer this question by defining what a, is, what the components of it are, and how it fits into the. The term ‘taking off’ refers to the process of identifying elements of construction works that can be measured and priced. Nitro PDF Professional (6. They do so by drawing information directly from the blueprint, which adds a layer of redundancy to ensure that the estimator hasn’t missed any materials. to run your calculations. Up until relatively recently, preparing a quantity takeoff required a high degree of skill, as well as good judgment and critical thinking skills. application/pdf This is especially true for large projects or projects where prices for critical materials like lumber or steel rise quickly over a short period of time. That being said, digital takeoff software facilitates the production of quantity takeoffs by automating many of the more tedious aspects, while also ensuring that takeoffs are accurate and produced in as little time as possible. From the design paperwork, the estimator will prepare a list of each material needed to complete a construction project. Taking another example, a quantity takeoff would detail all of the steel piping required for a project and would include details about the length and width of piping, and ensure that the piping that will be ordered will meet design specifications. 2.2.1 Taking –off quantities In the first instance quantities need to be extracted from drawings, together with an appropriate description. endobj Most often, the person preparing the quantity takeoff will markup the total material costs. While these skills are still necessary, the barrier to producing an accurate quantity takeoff has been reduced in some ways through the use of digital estimation software with an integrated ability to produce digital takeoffs. To be sure, a quantity takeoff is still complex. After an estimator has compiled a comprehensive list of the materials required, their specifications, and their quantities, the estimator can then begin to prepare a material price estimate. Taking another example, a quantity takeoff would detail all of the steel piping required for a project and would include details about the length and width of piping, and ensure that the piping that will be ordered will meet design specifications. First, a blueprint is uploaded or scanned into the program. Quantity takeoffs are generally performed early on during the bidding process. Taking off Quantities: Civil Engineering: sets taking off in the wider context of measurement; is presented in large format, with clearly laid out drawings; includes explanatory notes to support the taking off examples; is more than a dull, mechanistic book on During the estimation process, an estimator may have to make frequent adjustments to there quantity takeoff. You may also hear a quantity takeoff referred to as a construction takeoff. At this point, the estimator can make any adjustments to the material requirements that they see. 2011-10-29T20:19:58Z Clients will often accept bids from multiple contractors for the same project. Once prices are applied to each material, the estimator can dynamically adjust the price to account for material cost increases. 4 Steps to Align Your Construction Team for Peak Performance, 2020: Navigating a Year of Unprecedented Change, Discover What Your Pre-construction Takeoff Process Is Missing, 5 Construction Risk Solutions for Your Estimation Team. 1. When preparing the bills of quantities, a series of steps must be carried out in proper order so as to make the bill of quantities managed and easy to understand. Quantity takeoffs are used in both large and small projects to determine actual costs, ensure that a project remains profitable to the contractor, and are a vital component of a final detailed estimate. 2. What is a Quantity Takeoff in Construction? Only by taking the information “off” documents can estimators convert information from drawings into a list of items with quantities that can be measured. 335 0 obj construction estimating software pricing and subscriptions. With digital takeoff software, many of these functions are integrated into the software itself. General contractors, subcontractors, quantity surveyors, and estimators routinely produce quantity takeoffs during the estimation process. Quantity takeoffs don’t just save time when creating a takeoff, but they also save time when a quantity takeoff has to be adjusted. This process will vary depending on who is preparing the cost estimate. A quantity takeoff is created to provide a list of all of the materials necessary to complete a project. 10) You may also hear a quantity takeoff referred to as a. . If the software has the capability, price information can be drawn from a database of current prices populated by the contractor. Let’s examine these two different types, and highlight the positives and negatives of each approach. Quantity takeoffs are an important aspect of the, process. Along with the required amount of each material, the estimator will compile a comprehensive list of costs for the associated materials. In the preparation of the bill of quantities, the first step includes taking off the quantities from the working drawings. These are the basic elements of a construction quantity takeoff, but it is worthwhile to dive deeper into the other components of this type of takeoff. process. Taking off Quantities: Taking off is the process of analysing the drawing and its specifications to identify the elements required for the preparation of BOQ. This happens frequently during projects. that are necessary for the project. First, a blueprint is uploaded or scanned into the program. This process - known as booking dimensions or taking-off quantities - involves the measurer in either reading or scaling Determining the price of materials can be accomplished in a number of ways. From there, the program analyzes the blueprint or drawings and generates a list of all of the required materials. In addition to raw materials, the quantity takeoff will include any. They may increase requirements for certain materials where wastage is common during the construction process. Today, the majority of bills of quantities are produced using proprietary software packages, each system having its own format for inputting dimensions and formulating descriptions. Detail taking off examples such as Roads, Reinforcement, Retaining walls, etc. Step 1: Calculate out the volume of mortar of one brick. Quantity takeoffs also provide costs for each material. Quantity takeoffs are an integral part of the cost estimation process. If the software has the capability, price information can be drawn from a database of current prices populated by the contractor. For a small one-off job, an experienced builder should be able to estimate the materials required in his or her head. Although quantity takeoffs are themselves complex, they have a simple purpose. © Copyright 1976 - 2020 - ProEst - All Rights Reserved. Although quantity takeoffs are themselves complex, they have a simple purpose. It includes a variety of trades such as clearing site, top soil removing, excavation, concrete work and Material costs can rise over time. The item descriptions should not be held to be comprehensive but used to ‘identify’ the work being measured. Materials like concrete and asphalt will need to be quantified in volume, whereas materials like flooring or tile will need to be calculated using area or square feet. Create a spreadsheet for your bill of quantities with columns for the item numbers, descriptions, units of measurement, quantities, rates for each item, labor, and total cost. 2011-10-29T20:19:22Z If the cost of those materials is known and stable, the subcontractor can simply plug in their known prices into their quantity takeoff. As you could assume, there are many benefits of using construction estimating software to run your calculations. Digital takeoffs improve over manual quantity takeoffs in a number of ways. A quantity surveyor may take off quantities from detail drawings to produce a bill of quantities for tendering purposes. Taking off quantities is a key skill demanded of a quantity surveyor.Substructure taking-off involves all measurement work up to and including the damp-proof course. Providing the correct quantity for the material is essential, so estimators will need to be familiar with construction conditions, the materials that are used, and a good understanding of the construction process. Quantity takeoffs are an important aspect of the construction cost estimating process. Taking off quantities: Civil Engineering demonstrates, through a series of detailed worked examples from a range of civil engineering projects, how the measurement techniques are actually used. Recently, digital takeoff software has become increasingly popular for preparing takeoffs. Second, they provide a total material cost for a project, which is then incorporated into a detailed cost estimate. Quantity takeoffs fulfill two basic functions in a construction cost estimate. bill of quantity CO2 : Prepare taking Off Sheet, bill of quantities and estimate the total cost of building and civil engineering works in accordance to SMMM Taking off Quantities: Civil Engineering: sets taking off in the wider context of measurement; is presented in large format, with clearly laid out drawings; includes explanatory notes to support the taking off examples; is more than a dull, mechanistic book on This allows people that aren’t professional estimators to produce accurate and comprehensive construction quantity takeoffs in very little time. Taking off Quantities: Civil Engineering: sets taking off in the wider context of measurement; is presented in large format, with clearly laid out drawings; includes explanatory notes to support the taking off examples; is more than a dull, mechanistic book on stream Quantity takeoffs are prepared by a wide range of people and organizations within the construction industry, and each quantity takeoff can be unique. How much or little of a markup occurs will depend on a number of factors, and can be a key determinant of whether a bid is accepted or rejected. Although each program has its own suite of features, the basic process of creating a digital quantity takeoff is roughly the same. Digital quantity takeoffs are completed using a construction cost estimation program that contains digital takeoff capability. In addition to raw materials, the quantity takeoff will include any prefabrication in construction that are necessary for the project. While this may not be the case for smaller projects, large or complex projects will almost certainly require many revisions to the quantity takeoff. While some in the construction industry may not routinely work on quantity takeoffs, they may still wonder what is a quantity takeoff in construction? For materials like lumber, the quantity takeoff would include what specific type of lumber the job requires, the length and width of the lumber, and may include the total weight of the required lumber for shipping considerations. Each individual or organization may find a method of preparation for their quantity takeoffs that they prefer and may format their final quantity takeoff cost analysis in different ways. From there, the estimator can apply prices to each material. Taking Off Foundation - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. An estimator would examine physical drawings or blueprints and painstakingly create a list of materials. For large projects, the estimator would seek a bid from a material supplier. First, they detail what materials need to be purchased to complete a project. It consists of a ground floor and a basement (with one shear wall) while its foundation consists of spread footings tied by connecting beams as well as one As part of this process, the estimator or contractor will need to note specifics about each material. Along with the required amount of each material, the estimator will compile a comprehensive list of costs for the associated materials. We’ll also look at the different ways quantity takeoffs are completed, and what the advantages and drawbacks of these different methods are. A quantity takeoff is created to provide a list of all of the materials necessary to complete a project. From there, the estimator can apply prices to each material. Although still aided by a computer, the process is still largely manual. 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