ARCH 3013 Lecture Segment 11 Fundamentals of Quantity Takeoffs Part 1 INSTRUCTORS

ARCH 3013 Lecture Segment 11 Fundamentals of Quantity Takeoffs Part 1 INSTRUCTORS

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ARCH 3013 ESTIMATING COURSE NOTES LECTURE SEGMENT #11 PART ONE FUNDAMENTALS OF QUANTITY TAKE OFFS 1 An estimate begins with a quantity takeoff , which is a process of measuring the work of the project in the form of a series of quantified work items. The estimator needs to break the design down into predefined activities (work items ). Most estimators maintain a catalog of standard items encountered on most of their projects. Each item must be measured in accordance with a uniform set of rules that produce quantities in a format familiar to the estimators. These rules of measurement collectively amount to a “ Method of Measurement .” Quantities of work are measured in the take off process not quantities of materials . The difference between work quantities and materials quantities is subtle and can be difficult to understand. The critical issue to understand is that it is not just materials that must be estimated! A quantity takeoff is the process whereby the estimator prepares a complete list of all building components that are needed to construct the project What is measured: Net in place versus Gross. 1. Quantities are calculated using the sizes and dimensions indicated on the drawings with no adjustments for waste factors.
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ARCH 3013 Lecture Segment 11 Fundamentals of Quantity Takeoffs Part 1 INSTRUCTORS

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