Qto

BIM & Autodesk Quantity Takeoff

OMAR SELIM

BASIC CONCEPTS AND PRINCIPLES• The 2D CAD platforms mostly use lines to represent all elements, as shown in

the figure.

CAD project created using 2D lines and curves

• In Autodesk Revit, you can create a building model using 3D elements such as walls, floors, doors, and windows, as shown in the figure.

Autodesk Revit project created using parametric building elements

BIM

• Keep documentation coordinated and consistent with parametric change management technology.

Introduction

What is Autodesk Quantity Takeoff?

Autodesk Quantity Takeoff allows mix of old and new practices Old: Manual takeoff, tracing and measuring New: Automated takeoff, extract intelligent data from BIM

Manual Takeoff and Automated Takeoff workflows can be combined in a single project with ease.

Takeoff Catalogs can be saved and reused across projects.

Various reports readily available.

Introduction continued

Quick and easy creation of assemblies and override of values in an Excel like manner.

Automatic cross referencing of elements across model and sheets

Export to DWF/DWFx including full BOM

DEMO 1: Manual Takeoff – tracing & measuring

Here you will be introduced to the following concepts

Reuse of catalogs Setup of raster image for accurate measurement Quick measurement of lengths and areas, plus counting of elements Adjustment of values in workbook with

Direct overrides Formula

Creation of new takeoff assemblies Saving back the augmented catalog

Approx time 20 minutes

DEMO 2: Starting to use intelligent data

Here you will be introduced to the following concepts

Navigating and previewing model in Autodesk Quantity Takeoff

Perform quick takeoff by picking individual elements Grouping similar elements using a targeted search Performing takeoff on entire model and subsets of model

Navigating sheets and model using cross-referencing of elements provided by above techniques

….

DEMO 2: continued

….

Overriding data explicitly or modifying with formulas

Using assignments for vastly improved productivity

Approx time 20 minutes

DEMO 3: Adding richness to the data

Here you will learn about

Defining types for model takeoff Manipulating assemblies to get real world quantity values Adding cost data for

Materials Equipment Labor

Approx time 20 minutes

DEMO 4: Sharing Your Results

Here you will learn how to

Apply Legends Publish to DWF/DWFx with full BOM data Generate Material Reports Exporting data to other applications

Approx time 10 minutes

Takeoff in minutes automatically—Perform a takeoff on an entire building information model (BIM) in just minutes through integration of 2D and 3D design data.

Greater flexibility than typical databases or spreadsheets—Perform interactive examination of 3D models for material cost estimating purposes.

Dynamic counting—Count and quantify design data quickly and easily.

More efficient manual takeoff—Supports the takeoff of JPG, TIF, PDF, and other “nonintelligent” image formats.

Share, query, and clarify—Generate quantities linked to specific objects. Mark up and “round-trip” your comments.

Faster and more insightful quantity reports—Create summaries and detailed quantity surveying reports quickly and easily.

The QTO concept

PREPARING FOR TAKEOFF

SITE:http://www.autodesk.com/quantitytakeoff http://draftsman.wordpress.com/