Taking off quantities from drawings

Bill of quantities take off sub contractor quantity. Here, i describe the more common methods of taking out quantities in the construction field. It must be as accurate as possible and should be based on all available engineering and design data. Bills of quantities provide huge benefits to the contractor while creating with work sections that show likely subcontract packages. Nov 03, 2019 introduction to taking off quantities the quantification process involves recording dimensions and is referred to as taking off because it involves reading or scaling taking off dimensions from a drawing and entering this information in a standard manner on purpose ruled paper called dimension paper or take off paper. The availability of digital drawings at tender stage is not always an option and therfore the traditional methods for taking off quantities and lengths is necessary. The bill of quantities assists tenderers in the calculation of construction costs for their tender, and, as it means all tendering contractors will be pricing the same quantities rather than taking off quantities from the drawings and specifications themselves, it also provides a fair and accurate system for tendering. How to take off quantities from bim with the best results. Although some people think so, bim or any 3d modelbased estimating software will not kill the quantity surveying profession. I will show you a couple tricks of the trade that will make life a little easier and then some example problems for you to practice to gain experience and confidence. This simplifies the process for contractor to gather prices. Taking off quantities from bim is not as hard as it used to be.

Quantity take off construction estimating cost estimating. The quantities for the works form the basis of the contract sum and are not subject to remeasurement. The take off should be suitably fastened to prevent loss of sheets. I can take off quantities accurate measurements of autocad drawings of building or civil project. Hi, if you are looking for the exact boq of architectural, civil, structural and infrastructural projects then i can provide you the accurate quantities by taking off from the drawings using digital estimating software planswift. How to estimate the cost of interior building finishes from. The traditional method of preparation of bills of quantities can be broken down into two main processes. Material take off week 3 cee4333 agenda earthwork excavation concrete foundation wall excavation site excavator loader 118 horsepower 710g, 22. How to estimate the cost of interior building finishes. Save time in material quantification, avoid the pains from incomplete and uncoordinated drawings and reduce the risks of incorrect quantities from preconstruction to site management with a constructible model. We specialize in providing takeoffestimating services for construction and engineering firms at various stages throughout the construction process. Takingoff measurement is called the process of recording dimensions in a standard way which is accepted by construction. Thats why anyone would take off quantities from bim, as opposed to a 2d model. With the majority of construction estimators relying on excel as the primary piece of software to.

How to take off construction works designing buildings wiki. During the contract period, measurement is required for provisional quantities and valuation of variations only see section 10 of pah chapter 5. Mar 21, 2014 take off quantities from autocad and input into excel using vba macro. Sep 12, 2015 estimate the materials, labour, transport or whatever the expenses are prior to the quantities gathered from the drawings. Review the drawings before any actual estimating begins, you should first become familiar with the job. An essential guide to any quantity surveyor, architect or engineer. The bill of quantities assists tenderers in the calculation of construction costs for their tender, and, as it means all tendering contractors will be pricing the same quantities rather than takingoff quantities from the drawings and specifications themselves, it also provides a fair and accurate system for tendering. Mechanical bom, boq, quantity takeoff, cost estimation. Divisions of bill preparation there are several methods of preparing bills of quantities. The quantity of material in a project can be accurately determined from the drawings. Take off quantities from autocad and input into excel youtube.

Example taking off for substructure measurement conventions. Bill of quantities spreadsheet download boq construction. Substructure takingoff involves all measurement work up to and including the dampproof course. Similarly, if works are underway, but the drawings change and remeasurement is needed for a variation account, we can help. However to reduce the time required for this process various estimators software and associated tools are available one such tool allowing lengths to be directly and automatically. These measurements are used to format a bid on the scope of construction. Automatically count similar symbols across all drawings within your project, at the same time. A more thorough process is necessary for major construction projects, however. Take off quantities from auto cad drawings by shehankks. How to take off construction works designing buildings wiki share your construction industry knowledge. Jun, 2019 taking off construction works designing buildings wiki share your construction industry knowledge.

Chapter 2 quantity takeoff the quantity takeoff is an important part of the cost estimate. Onscreen takeoff makes it easy just draw the takeoff on the screen using a mouse or a stylus and onscreen takeoff does the rest it is easy to see when everything is taken off if it is colored, it is counted. Introduction to taking off quantities take off sheet. We provide services for design build projects, commercial construction, residential home construction with detailed quantity takeoffs and pricing from a construction projects conception phase to. Quick, reliable modelbased quantity takeoff software.

This is necessary to produce bills of quantities and requires that the design is complete and a specification has been prepared. Construction professionals are involved in procuring building work on a daily basis. The practice historically of estimating building costs in this way arose from noncontractual measurements, taken off drawings to assist tenderers in quoting lump sum prices. Construction takeoffs from pdf drawings on screen take off. Top 5 bim quantity takeoff software 3d model based estimating solutions. In the early days of the profession, a quantity surveyors main role was solely taking off measurements from a plan, but the modern quantity surveyor has. This system is suitable when the work is relatively straightforward and the number of items limited. Jan 25, 2016 1 an introduction to taking off building quantities an irish approach tony cunningham school of surveying and construction management dublin institute of technology. Analysis of drawings and specifications allows the cost consultant usually a quantity. Chapter 9 measurement procedure the parts of the pah shown in blue and bold. I have an experience of more than 5 years in the field of estimation.

This book provides a thorough understanding of the general principlesof measurement for taking off quantities. For a small oneoff job, an experienced builder should be able to estimate the materials required in his or her head. Blueprint measuring used to be primarily from paper plans and was measured typically by hand or by using a gtco digitizer. An estimator would go through the drawing sets and begin to calculate. While grasshopper has powerful tools used for form creation, manipulation, and rationalization, it also stores information about each operation being. Taking off measurement is called the process of recording dimensions in a standard way which is accepted by construction professionals. Quantity takeoff indicates all the necessary operations that allow the quantity surveyor to extract relevant metric data from a drawing and proceed to the. Bills of quantities, illustrated takeoff of drawings for detached garage. This process is known as takeoff or material takeoff mto and is an essential part of the estimating process.

Taking off quantities from bim should be more accurate, easier and faster. But many bim programs are still not up to scratch and require a large amount of manual tweaking. These processes involve pasting down a paper drawing and using a touch sensitive stylus to. If you want advanced bim estimating software with full bim capabilities and powerful features such as autorevise and 3d model quantity takeoff, then costx is the product to choose. Costx takeoff will only take you as far as taking off quantities, but the deal is that its done automatically.

Methods of takeoff quantities explanation with solved. Consistency when measuring and counting the symbols on your plans will help you reduce the time it takes to estimate a job and eliminate some errors. Material takeoff week 3 cee4333 agenda earthwork excavation concrete foundation wall excavation site excavator loader 118 horsepower 710g, 22. Introduction to taking off quantities the quantification process involves recording dimensions and is referred to as taking off because it involves reading or scaling taking off dimensions from a drawing and entering this information in a standard manner on purpose ruled paper called dimension paper or take off paper. Introduction to taking off quantities take off sheet qs. Here is a list of substructure taking off according to smm7. The takeoff should be suitably fastened to prevent loss of sheets. Quantity take off cost estimating estimating software. The macro uses the properties of the autocad and tags the drawn polylines. Accurate quantities have to be measured from the fully completed design. Dec 15, 2017 drawing takeoff, taking off a project, or quantity surveying is the process of drawing measurements on a plan to quantify construction items.

Sep 27, 2018 the bill of quantities assists tenderers in the calculation of construction costs for their tender, and, as it means all tendering contractors will be pricing the same quantities rather than taking off quantities from the drawings and specifications themselves, it also provides a fair and accurate system for tendering. Here are the some principles in taking off quantities of construction field. Carpenters drawings i carpenters drawings ii steel fixers drawings. Take off quantities from autocad and input into excel using vba macro. It includes a variety of trades such as clearing site, top soil removing, excavation, concrete work and masonry works. Taking off construction works designing buildings wiki. Civil engineering demonstrates, through a series of detailed worked examples from a range of civi. The work is measured in series of groups, each representing a particular section of the. 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. Dimension papertraditional taking off uses dimension paper which is made of a series of columns. Oct 14, 2012 construction takeoffs from pdf drawings todays construction estimator does the majority of their estimates by measuring directly from pdf drawings. Depending on the shape or design of a building the method of taking out quantities also varies. The taking off process can be done manually by hand or using specialized software. Taking off quantities is a key skill demanded of a quantity surveyor.

I can follow rics new rules of measurement nrm2, pomi or on. Taking off quantities civil engineering engineering books. When you analyze dimension sheets from different quantity surveyors, you will realize that the order in which measurements are entered is quite different. Drawing takeoff, taking off a project, or quantity surveying is the process of drawing measurements on a plan to quantify construction items. This cover sheet should also contain a list of drawings used for the take off. In addition to taking off the floor and ceiling area of a space, the perimeter of the room should also be calculated. You will also need to measure the circuits shown in the drawings. Mechanical bom, boq, quantity takeoff, cost estimation services. Integrating grasshopper with cost estimating and material take off efforts makes efficient use of the datacentric side of parametric programs. Here is a list of substructure takingoff according to smm7.

As you complete the count for each component on each page, enter the quantities on a working scope sheet. In the early days of the profession, a quantity surveyors main role was solely taking off measurements from a plan, but the modern quantity surveyor has far more roles than taking off quantities. Use of appropriate automation tools is highly recommended. Teaching paperless detailed quantity takeoff and estimating. The advantage of doing take off software from pdf plans with software like quickmeasure onscreen is the ability to zoom in on the drawing to see small detail and improve the accuracy of the measurement. After you have worked your way through every page of the blueprint, add the totals for each different component. You just need to know a little bit about geometry and use a little bit of engineering common sense. Counting and measuring the symbols shown on a projects electrical plan is a critical step in the development of an accurate estimate. Integrating grasshopper with cost estimating and material takeoff efforts makes efficient use of.

The height of the space also needs to be calculated. As commercial general contractors and construction managers, we rely heavily on our lumber vendors to be capable of taking off quantities from drawings and providing complete quotes per specifications to help us meet bid deadlines. Quantity takeoffs qto are a detailed measurement of materials and labor needed to. However, in order to fully understand and appreciated the potential problems in the measurement process a thorough knowledge of measurement conventions is essential. This will be used for not only the wall base, but also to help estimate other wall surfaces. Mastering takeoffs for estimating construction projects. Aug 27, 2019 taking off quantities from bim should be more accurate, easier and faster. Top 5 bim quantity takeoff software 3d model based. Often the height of a space is not available on the schematic drawings. Accurate quantities have to be measured from the fully completed design in the precontract stage. Apr 28, 2017 costx takeoff will only take you as far as taking off quantities, but the deal is that its done automatically. Quantity takeoff quantity take off problems are relatively easy to figure out.

The item descriptions should not be held to be comprehensive but used to identify the work being measured. What the job looks like by drawing a mental picture from the plans. The bills of quantities is a form of document which sets out the quantities and descriptions of the items of. Traditional take offs the availability of digital drawings at tender stage is not always an option and therfore the traditional methods for taking off quantities and lengths is necessary. This cover sheet should also contain a list of drawings used for the takeoff. Analysis of drawings and specifications allows the cost consultant usually a quantity surveyor to prepare a taking off list, which lists all of the. Split quantities however you like, even after youve counted them. Sep 25, 2019 2plan team is entirely free and open source software with some capabilities helpful to estimators overview.

Methods of takeoff quantities explanation with solved problem. Taking off measuring from the drawings and entering the dimensions on. Last minute revised pricing schedules no longer require timeconsuming recounts. Bills of quantities is created with the procedure of taking off which entails recognizing elements of construction works to be estimated and priced. Taking a project off is defined as the act of determining quantities that an estimator needs in order to determine a project estimate. This method is especially applicable for the works. Taking off quantities is on of the job role of quantity surveyor. We specialize in providing take off estimating services for construction and engineering firms at various stages throughout the construction process.

Automated takeoff software electrical estimating countfire. Modelbased quantity takeoff software for concrete tekla. Taking off construction works designing buildings wiki share your construction industry knowledge. Substructure taking off involves all measurement work up to and including the dampproof course. A quantity surveyor may take off quantities from detail drawings to produce a bill of quantities for tendering purposes. The constructional deviation does not affect the support rebars 1 and 2, which will be formed with a total length equal to 1. Therefore, quantities must be very accurate to estimate the construction cost. Schematic drawings are the first set of measured drawings in the design process. Introduction wind and seismic forces structural model and analysis. This book provides a thorough understanding of the general principles of measurement for taking off quantities. Take off quantities from autocad and input into excel. Mar 11, 2019 this process is known as takeoff or material takeoff mto and is an essential part of the estimating process. If youre tendering as a main contractor and your subcontractors are overloaded, skilled, independent qs could save you time by taking off quantities for your tender. In most cases but not all, free construction estimating and takeoff software options earn revenue by offering a basic free version to entice users to download, with premium features available for a price as a result, you should note that the free version of the products listed below may not have all the features you need.

The term taking off refers to the process of identifying elements of construction works that can be measured and priced. Experienced estimators have developed procedures to help them quantify their work. Accuracy and completeness are critical factors in all cost estimates. Quantity take off quantity take off problems are relatively easy to figure out. To find the length of excavation be careful to fully understand what the given dimension are measuring.