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Estimating with Navisworks
Quantification
Kevin Miller & Kenny Deemer
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Introductions
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Kevin Miller, Ph.D.
Professor and Program Coordinator for the
Construction and Facilities Management program at
BYU.
Traveled around the US researching how companies
use BIM.
Prior to teaching, estimated for commercial contractors.
I teach Precon Services using BIM tools.
Intro
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About Me
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Where we work
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Markets
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Navisworks 2015 took a huge step forward with
Quantification. Come learn how to: Create catalogs,
access data properties in the model, perform 2D
takeoff, create custom quantity formulas, override
model quantities, export the data to Microsoft Excel.
Class summary
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At the end of this class, you will be able to:
Understand the takeoff process in Navisworks.
Develop strategies for quantity takeoff in Navisworks.
Customize property mappings for Quantification.
Incorporate visual strategies to verify takeoffs.
Key learning objectives
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It doesn’t crash!!!!!
Richer metadata. ALL of the model information can be
tapped.
Render settings and transformations
Better data export
For Quantification, Navisworks Manage or Simulate is
required.
What’ Different from QTO
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Overview of Navisworks Quantification
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Live Demo
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Type of Takeoffs
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Quick Budget
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Detailed Estimate
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Scoping
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Familiarization
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Did you get a model like this?
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Or Like this
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Detailed Takeoff
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Search & Rescue
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The Dump
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Quantification from the Beginning
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Detailed Takeoff Live Demo
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Search Takeoff Live Demo
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Why is search powerful?
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Dump Demo
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Excel Pivot Tables
Pivot Charts
Dashboards
Integration with Estimating Systems
Quantities now What?
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Prepping for Quantification
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Files
Opening
Appending
Importing
Navisworks Setup
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File Types
NWC
RVT
DWG
DWF
PDF (subscription Only)
Navisworks Setup
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Revit Export Options
My Preferences
Convert All Parameter.
Do NOT Divide into Levels
Export see next slide
Pay attention to Section
Box in Revit
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Export options
Entire Model
You get everything
You may not want
Everything
May not want everything
Existing building
Analytical objects
Current View
You don’t get everything
You may not want everything
You get what you see
May miss phasing objects
Don’t need to deal with
Analytical objects
What to do with Curtain Wall Mullions?
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Render Style - Shaded
Display Units, Decimal Places, Selection Options
Model Color - white
Model Transparency – walls 15%
Appearance Profiler – applies to all models quickly
Search sets can be helpful.
Prepping for Takeoff in Navisworks
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Determine what you want to takeoff.
See how the objects are classified in the model.
There are many different structures in the model.
Navisworks allows the user to define where it should go in the
takeoff structure rather than relying the designers structure.
What do you want to takeoff?
Model Name Estimate Name
Foundation Slab Spread Footing
Wall Foundation Continuous Footing
Wall Foundation Wall
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Look at the object properties.
Map the properties.
Height, height, W, Wt
Review the catalog formula calculations.
Gyp board : Length * Height vs. Area
Struct Steel : Weight per foot vs Total weight.
See what information is available
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If there is a property field in the model and you may want
it in the estimate, Map it.
Weights found in different fields
Description
Tags – eg Wall tags, Door tags, etc
Level/location information
Coding structure information eg, MasterFormat,
UniFormat, etc,
Property Mapping
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Values correct, great.
Values incorrect, override the values.
Double Check Mapped Values
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Navis allows the estimator to see as much or little of
the other models to understand the context of what is
being taken off.
Hide/show takeoff objects.
Estimating Context
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Benefits of NOT Using a catalog
Rapid Takeoff
Works if organized by ???
Catalogs
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Benefits of Using a catalog
Custom formulas
Default colors and transparency
Alignment with estimating databases
Catalogs
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Grow the catalog as you go.
Multiple catalogs can be created and used.
Export the catalog after a project and then it can be
reused for future projects.
Comes in with the same setup for the project.
If you want to come in and change the setup info for the project
quick XML edit will allow that to happen
Custom Catalogs
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Model Updates
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Model Updates
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Full Circle Demo
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Online Resources
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http://cmfac.groups.et.byu.net/miller/cm411/help/Navis
Tutorials.php
Step by Step Intro to Quantity Takeoff in Navis.
XML Editing Instructions.
Tutorials
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Excel Template to Build Catalog from scratch.
http://knowledge.autodesk.com/support/navisworks-
products/downloads/caas/downloads/content/autodesk
-navisworks-quantification-catalog-creation-template-
2014.html
Templates
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2D PDF plugin (Subscription Customers Only)
https://apps.exchange.autodesk.com/NAVIS/en/Detail/I
ndex?id=appstore.exchange.autodesk.com:pdfreader_
windows64:en
OR
2D PDF takeoff
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Kenny for joining me on this presentation.
My Contacts at Autodesk who answer my questions.
All of the individuals and companies who are willing to
let me come and learn from you.
Thank you to:
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I love my extremely powerful and yet portable computer.
https://www.youtube.com/watch?v=DqDXmwfoLuU
Bonus
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Autodesk is a registered trademark of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries. All other brand names, product names, or trademarks belong to their respective holders. Autodesk reserves the right to alter product and services offerings, and specifications and pricing at any time without notice, and is not responsible for typographical or graphical errors that may appear
in this document. © 2013 Autodesk, Inc. All rights reserved.