Optimization of Energy and Heat Production from Biogas
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Change Order Reduction through 3D Modeling and BIM Presented by: Brian Hannon, P.E., Moore & Bruggink Outline • Construction Change Orders • 3D Modeling • Building Information Modeling • Different Programs • Case Studies • Future Construction Change Orders • Owner Requested Change • Unforeseen Conditions • Conflicts • Contractor Questions • Design Conflicts Industry Average • Construction CO’s between 7%-9% – 7 % (design/build) (Project Delivery Systems & Project Change : Quantitative Analysis –Journal of Construction Engineering & Management at ASCE July 2003 – Ibbs et.al.) – 7.5 % (Comparative Analysis of total Project Costs w/ vs without at CM – Research Report to the CMAA Research and Development Committee - April 2006 – Kuprenas et. al.) – 8.1 % (Summary Report: Development of a Change Order Management Process for use on Construction Projects at MSU – Nov. 2004 – Mrozowski et. al.) – 9 % (design/bid/build) (Project Delivery Systems & Project Change : Quantitative Analysis –Journal of Construction Engineering & Management at ASCE July 2003 – Ibbs et.al.) 3D Modeling • Drawings in 3 planes (X, Y, Z) • Provides Design Visualization • Test Design Concepts • Can Render Surfaces or Solids 3D Modeling Homestead Dairy Cogeneration Facility, Plymouth, IN 3D Modeling Homestead Dairy Cogeneration Facility, Plymouth, IN 3D Modeling Homestead Dairy Cogeneration Facility, Plymouth, IN 3D Modeling Homestead Dairy Cogeneration Facility, Plymouth, IN Conflict Detection Image – www.thenbs.com Conflict Detection Image – www.rapidbim.com Conflict Detection Image – www.beyonddesign.com Building Information Modeling • “Next Level” of 3D drawings • Digital representation of physical and functional characteristics of a facility • Concept originated in 1970’s, term first appeared in 1992 white paper. • Started becoming feasible with advancement of computing power and in 2009 w/ release of Revit and Navisworks Building Information Modeling • Embed information as part of 3D Model • Equipment Information – Make and Model, Material – O&M manuals –Photos • Quantity and Materials takeoff • Cost Estimating Information Embedment Image – www.autodesk.com Some of the Different Programs • Autodesk Revit • AutoCAD Plant 3D • ArchiCAD • Bentley Architecture • NavisWorks (allows integration) • Open-platform types – Google Sketch-up – Blender – FreeCAD Why Use 3D and/or BIM? • Contractor’s View Why use 3D and/or BIM? • Engineer’s View • Case Histories – Industry Average CO’s = 7% - 9% – M&B prior to implementation = 5.44% – M&B after implementation = 0.95% Montgomery County, IN Montgomery County, IN Montgomery County, IN Montgomery County, IN Montgomery County, IN Montgomery County, IN Montgomery County, IN • Project Budget = $3,617,600 • Change Orders = $8,680 • CO % = 0.23% Fulton Lift Station, Ada Fulton Lift Station, Ada Fulton Lift Station, Ada Fulton Lift Station, Ada Fulton Lift Station, Ada • Project Budget = $329,200 • Change Orders = $6,792 • CO% = 1.02% Grandville CWP Chemical Bldg Grandville CWP Chemical Bldg Grandville CWP Chemical Bldg • Project Budget = $312,200 • CO’s (w/ discovery) = $17,251 • CO’s (w/o discovery) = $2,541 • CO % (no discovery) = 0.80% Future of BIM • 4D modeling – 4D = Add schedule and tracking to 3D model • Can also “clash” detect schedule using 4D 4D (Track Schedule and Conflicts) Future of BIM • 5D modeling –5D = Add cost and tracking to the 4D model • 6D – Model delivered to owner for use w/ all information Model for Owner’s Use Image – www.skanska.com Questions? Brian Hannon, P.E. Moore & Bruggink (616) 363-9801 [email protected] .