4. 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
5. •
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
11. 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.
12. 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
13. 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
14. 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
….
15. DEMO 2: continued
….
Overriding data explicitly or modifying with formulas
Using assignments for vastly improved productivity
Approx time 20 minutes
16. 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
17. 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
18.
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.
Import Catalog
Import raster image
Setup sheet scale (units are feet, value 19.14875)
Create “Exterior Wall A” as Linear, and set default thickness and height.
Create takeoff, highlighting “as one or many segments”.
Override values (length, and height) in workbook. Show changes
Create new material “4x8 sheathing” (count) and “siding” (linear)
From workbook create assembly and setup formula
Override formula results.
Demonstrate area takeoff and backout
Demonstrate count takeoff
Export catalog back out
Create new project, using sample DWF and the catalog we saved in the previous step.
Hide Others for Walls and manipulate the view. Show Doors and Windows for comparison. Select individual elements to demonstrate highlighting
Now switch to Floor 1 plan view and start performing Single Click takeoff of the exterior walls.
Move new wall objects into Exterior Walls A item. Show that overrides work well here too, as do assemblies
Override at item level. Show tool tips.
Now demonstrate that takeoff is available in many views but counted once only by switching to documents palette and then switching views in takeoff context menu and canvas context menu
Show data mapping
Perform Search takeoff, explain what is going on there
Perform Model takeoff. Show how resultant tree mimics model tree
Go into model takeoff tree and define some items. Make note that this is remembered for next time around
Show Edit->Preferences… and Item Type tab
Go through an example with Door type that builds out detailed assembly information for Shims, Caulk and Hardware quantities
Add workbook columns that display cost.
Fill out cost for materials and show workbook updating
Show that unit cost can be entered in the dialog or the workbook directly.
Turn legends on in a few sheets
Export to DWF
Generate a few material reports
Export data to Excel and XML