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Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
PROJECT OVERVIEW
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
ATEAdvanced
Technological Education
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
ANALYSIS DESIGN FABRICATION
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
ANALYSIS DESIGN FABRICATION
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
BuildingPerformance &
Energy Modeling
Computation & Fabrication
Alexander AptekarAssistant Professor, NYCCT
BIM Director, FUSELab
BuildingInformation
Modeling
FacultyAreas
Anne LeonhardtAssistant Professor, NYCCT
co-PI, FUSELabco-PI, Center for Performative Design
Brian RingleyAdjunct Professor, NYCCT
Fabrication Lab Coordinator, NYCCTTechnology Coordinator, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Faculty Initiative
Alexander Aptekar, Assistant ProfessorBIM Director
Anne Leonhardt, Assistant ProfessorCo-PI
Computation & Fabrication Director
Brian Ringley, Adjunct ProfessorTechnology Coordinator
Sanjive Vaidya, Assistant ProfessorBuilding Performance Director
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
Industry Partnerships
Robert Cervellione, CERVER Design StudioZach Downey, PARABOX Labs
Brigette Borders, FLATCUT_Arpan Bakshi, SOM Digital Design GroupSrinithya Lavu, Green Building Specialist
BuildingPerformance &
Energy Modeling
Computation & Fabrication
Alexander AptekarAssistant Professor, NYCCT
BIM Director, FUSELab
BuildingInformation
Modeling
Faculty Industry AdvisorsAreas
Robert CervellioneCERVER Design Studio
Anne LeonhardtAssistant Professor, NYCCT
co-PI, FUSELabco-PI, Center for Performative Design
Brian RingleyAdjunct Professor, NYCCT
Fabrication Lab Coordinator, NYCCTTechnology Coordinator, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Arpan BakshiSOM Digital Design Groupform. YR&G Sustainability
Zach DowneyPARABOX Labs
Brigette Bordersform. FLATCUT_
Srinithya LavuGreen Building Specialist
MS Sustainable Design, Carnegie Mellon
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
BuildingPerformance &
Energy Modeling
Computation & Fabrication
Alexander AptekarAssistant Professor, NYCCT
BIM Director, FUSELab
BuildingInformation
Modeling
Faculty Industry Advisors CoursesAreas
Robert CervellioneCERVER Design Studio
Building TechnologySeminar
Building TechnologySeminar
Anne LeonhardtAssistant Professor, NYCCT
co-PI, FUSELabco-PI, Center for Performative Design
Brian RingleyAdjunct Professor, NYCCT
Fabrication Lab Coordinator, NYCCTTechnology Coordinator, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Arpan BakshiSOM Digital Design Groupform. YR&G Sustainability
Zach DowneyPARABOX Labs
Brigette Bordersform. FLATCUT_
Srinithya LavuGreen Building Specialist
MS Sustainable Design, Carnegie Mellon
Building PerformanceLab
Computation and Fabrication Seminar
Student Collaboration
Building Technology SeminarComputation & Fabrication Seminar
Building Performance Lab
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
BuildingPerformance &
Energy Modeling
Computation & Fabrication
Architectural Technology
EnvironmentalEngineering
Alexander AptekarAssistant Professor, NYCCT
BIM Director, FUSELab
BuildingInformation
Modeling
Faculty Industry Advisors CoursesAreasDepartments
Robert CervellioneCERVER Design Studio
Building TechnologySeminar
Building TechnologySeminar
Anne LeonhardtAssistant Professor, NYCCT
co-PI, FUSELabco-PI, Center for Performative Design
Brian RingleyAdjunct Professor, NYCCT
Fabrication Lab Coordinator, NYCCTTechnology Coordinator, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Sanjive VaidyaAssistant Professor, NYCCT
Building Performance Director, FUSELab
Robert PolchinskiAssistant Professor, NYCCT
Environmental Engineering
Arpan BakshiSOM Digital Design Groupform. YR&G Sustainability
Zach DowneyPARABOX Labs
Brigette Bordersform. FLATCUT_
Srinithya LavuGreen Building Specialist
MS Sustainable Design, Carnegie Mellon
MechanicalEngineering
Building PerformanceLab
Computation and Fabrication Seminar “Interdepartmentality”
Architectural TechnologyEnvironmental Engineering
Mechanical Engineering
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
Performance Analysis Steps
Concurrent BIM and fabrication scope not listed
Step 1Climate
Step 2Massingand Light
Step 3Massingand Energy
Step 4Façadeand Light
Step 5Façadeand Energy
Step 6BenchmarkingPerformance
Tools Rhino 3D, Vasari DIVA Vasari DIVA Vasari Equest
Inquiry Identify % of year above and below the comfort band (70-75 deg F).
Identify % of year above 60% relative humidity.
Identify summer and winter primary wind direction and velocity.
Identify hot and cold site exposures.
Identify maximum glazing area needed by exposure to adequately illuminate perimeter zones if massing is set, and iterate between floor plate outlines if massing is flexible.
Run first energy and load analysis.
Discuss results and use them to question Step 2 massing decisions.
Repeat steps 2 and 3 as needed.
Identify façade strategies using a range of geometric densities, depths, and bay sizes to generate a matrix of options.
Discuss the “sensitivity” of various variables to related performance outcomes.
Translate geometric complexities into their vertical and horizontal counterparts.
Identify three geometries representative of the range of variation (small-medium-large) in Rhino and model those in Vasari.
Repeat steps 4 and 5 as needed.
Export Vasari model of final design into Equest, apply daylight dimming sensors, add utility costs, and compare results against two baselines.
Baseline A – 90.1 building; Baseline B –status quo fully glazed building.
Repeat steps 2 thru 5 as needed based on baseline comparisons.
Activity Rhino 3DBuild zoning boundary and extrude to maximum building height. Build surrounding buildings as single surface masses.
VasariIdentify nearest weather station. Document climate data.
DIVAIterative runs of solar radiation analysis. Iterative runs of workplane illuminance analysis.
VasariBuild or transfer desired massing with proper floor count and glazing areas. Run energy analysis.
DIVAParametric runs using DIVA Grasshopper components.
VasariRun energy analysis and discuss trends within loads results. You will see more variation in the loads results than the energy results between façade options. While high performing facades reduce less than 5% of building energy consumption, they can reduce peak loads by up to 30%, resulting in lower HVAC first costs and potentially lower demand on power plants.
EquestRun energy analysis and discuss reductions between design and baseline cases.
Performance Analysis Steps
Concurrent BIM and fabrication scope not listed
Step 1Climate
Step 2Massingand Light
Step 3Massingand Energy
Step 4Façadeand Light
Step 5Façadeand Energy
Step 6BenchmarkingPerformance
Tools Rhino 3D, Vasari DIVA Vasari DIVA Vasari Equest
Inquiry Identify % of year above and below the comfort band (70-75 deg F).
Identify % of year above 60% relative humidity.
Identify summer and winter primary wind direction and velocity.
Identify hot and cold site exposures.
Identify maximum glazing area needed by exposure to adequately illuminate perimeter zones if massing is set, and iterate between floor plate outlines if massing is flexible.
Run first energy and load analysis.
Discuss results and use them to question Step 2 massing decisions.
Repeat steps 2 and 3 as needed.
Identify façade strategies using a range of geometric densities, depths, and bay sizes to generate a matrix of options.
Discuss the “sensitivity” of various variables to related performance outcomes.
Translate geometric complexities into their vertical and horizontal counterparts.
Identify three geometries representative of the range of variation (small-medium-large) in Rhino and model those in Vasari.
Repeat steps 4 and 5 as needed.
Export Vasari model of final design into Equest, apply daylight dimming sensors, add utility costs, and compare results against two baselines.
Baseline A – 90.1 building; Baseline B –status quo fully glazed building.
Repeat steps 2 thru 5 as needed based on baseline comparisons.
Activity Rhino 3DBuild zoning boundary and extrude to maximum building height. Build surrounding buildings as single surface masses.
VasariIdentify nearest weather station. Document climate data.
DIVAIterative runs of solar radiation analysis. Iterative runs of workplane illuminance analysis.
VasariBuild or transfer desired massing with proper floor count and glazing areas. Run energy analysis.
DIVAParametric runs using DIVA Grasshopper components.
VasariRun energy analysis and discuss trends within loads results. You will see more variation in the loads results than the energy results between façade options. While high performing facades reduce less than 5% of building energy consumption, they can reduce peak loads by up to 30%, resulting in lower HVAC first costs and potentially lower demand on power plants.
EquestRun energy analysis and discuss reductions between design and baseline cases.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Schematic Solar & Wind Analysis(BIM)
BuildingInformation
Modeling
Generate BIM Model of Existing Building and Run Initial Series of
Environmental Analysis Using Vasari
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Existing Building Geometry(Live Instance)
Schematic Solar & Wind Analysis(BIM)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Rhino/RevitInteroperability
Instance Desired BIM Families into Rhino, Develop Concept for
Shading Panels Based on Initial Vasari Analysis, and Create
Parametric Definition to Drive Variable Panel System
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Schematic Solar & Wind Analysis(BIM)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Rhino/RevitInteroperability
Remap Solar Radiation Data from DIVA Calculations to Drive Design
Parameters of Variable Screen
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Shading Geometry(Native 3DM Translation)
Schematic Solar & Wind Analysis(BIM)
Energy Analysis w/Shading(BIM)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Rhino/RevitInteroperability
Natively Translate Rhino Shading Geometry into Vasari using
CASEapps OpenNURBS for Basic Energy Analysis (Prior to Creating
Full Energy Model)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Shading Geometry(Native 3DM Translation)
Curtain Wall Geometry(Adaptive Component)
Schematic Solar & Wind Analysis(BIM)
Energy Analysis w/Shading(BIM)
Custom Curtain Wall Model(BIM)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Rhino/RevitInteroperability
Import Freeform Curtain Wall Geometry into Revit as Adaptive
Component System for Design and Detailing
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Import gbXML & Place Daylighting Controls(3DM to IDF Translation)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Shading Geometry(Native 3DM Translation)
Curtain Wall Geometry(Adaptive Component)
Schematic Solar & Wind Analysis(BIM)
Energy Analysis w/Shading(BIM)
Custom Curtain Wall Model(BIM)
Energy Zone Data(Green Building File)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Energy DataInteroperability
EnergyModeling
Rhino/RevitInteroperability
Import Building and Screen Geometry into SketchUp and
Integrate with gbXML and Daylighting Control Data Using
OpenStudio
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Import gbXML & Place Daylighting Controls(3DM to IDF Translation)
Spec Controls, Add HVAC,& Run Simulations
(Energy Model)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Shading Geometry(Native 3DM Translation)
Curtain Wall Geometry(Adaptive Component)
Schematic Solar & Wind Analysis(BIM)
Energy Analysis w/Shading(BIM)
Custom Curtain Wall Model(BIM)
Energy Zone Data(Green Building File)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Energy DataInteroperability
EnergyModeling
Rhino/RevitInteroperability
Import IDF File from OpenStudio, Specify Controls, Add HVAC Data,
and Run Energy Simulations within EnergyPlus
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Import gbXML & Place Daylighting Controls(3DM to IDF Translation)
Spec Controls, Add HVAC,& Run Simulations
(Energy Model)
Draw Numbers & Derive Performance Conclusions
(Energy Model)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Shading Geometry(Native 3DM Translation)
Curtain Wall Geometry(Adaptive Component)
Schematic Solar & Wind Analysis(BIM)
Energy Analysis w/Shading(BIM)
Custom Curtain Wall Model(BIM)
Energy Zone Data(Green Building File)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Energy DataInteroperability
EnergyModeling
Rhino/RevitInteroperability
Export Heat Gain and Daylighting Autonomy Data from DIVA along with Data from Energy Model to Derive Performance Conclusions
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
PROJECT OVERVIEW
De�ne Existing Building Geometry(BIM)
Develop Shading Geometry(Parametric Model)
Import gbXML & Place Daylighting Controls(3DM to IDF Translation)
Part Nesting(Laser Cutter Machine File)
Add Thickness, Bend Radii,& Bend Sequencing
(Solid Assembly Model)
Data for CNC Brake Operator(Bending Drawings)
Spec Controls, Add HVAC,& Run Simulations
(Energy Model)
Draw Numbers & Derive Performance Conclusions
(Energy Model)
Gather Solar Data to Drive Shading(Data-Based Parametric Model)
Existing Building Geometry(Live Instance)
Shading Geometry(Native 3DM Translation)
Curtain Wall Geometry(Adaptive Component)
Schematic Solar & Wind Analysis(BIM)
Energy Analysis w/Shading(BIM)
Custom Curtain Wall Model(BIM)
Energy Zone Data(Green Building File)
BuildingInformation
Modeling
Rhino/RevitInteroperability
ParametricModeling
Energy DataInteroperability
EnergyModeling
Rhino/RevitInteroperability
Fabricationfor FieldTesting
Create Bending Drawings and Digitally Fabricate Stainless Steel Panel Prototype for Field Testing
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
SITE ANALYSISRevit/Vasari
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
City Tech’s Environmental (“E”) BuildingNear the Brooklyn Entrance
to the Brooklyn Bridge
South Faceof Building
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Site Insolation at Equinox (BTU/ft2) Site Insolation at Summer Solstice (BTU/ft2)
Site Insolation at Winter Solstice (BTU/ft2)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Existing South Face of E Building
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Thermal Imaging of E Building South Face
Note the time of day. The sun reflecting off of the masonry adversely affects the reading.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Existing Window Frame Condition Within E Building
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Thermal Imaging of Existing Window Frame Condition Within E Building
Note the thermal leak where the wood framing is splitting, and the probable thermal bridge at the metal connector.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Wind Rose and CFD Wind SimulationShowing Breadth of Preliminary Analysis Tools
Available in Revit/Vasari
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
SITE ANALYSIS (Revit/Vasari)
Annual Heating Loads:Glass South Facade
Annual Coolings Loads:Glass South Facade
Clear Indication that Annual Heating and Cooling Loads
are Primarily Driven by Glazing
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
RESPONSIVE SHADING SYSTEMRhino/Gh3D + DIVA
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Typical Workflow:Revit > DXF/DWG > Rhino
Desired Level of Detailfor Subsequent OperationsRequires Custom Workflow
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Custom 3D View in Revitwith Family Visibility Overrides
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Revit Family Live-Instancedvia Chameleon Plug-In
as Mesh Geometry
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Convert Meshes toBReps and Cull
Unwanted Geometry
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Simplify Slabs
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Existing Condition:Low Solar Radiation Variation
Freeform Facade:High Solar Radiation Variation
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
DIVA GH/Excel ToolAB 2013_0316
Import from DIVA/GH Calculated Value User Input
Introduction
Imported Data from DIVA/Gh3D Total Area of Glass (ft2) Total Wall Area (ft2) Perimeter Floor Area (ft2) Total Radiation (kWh)
Heat Gain Calculation Total Area of Glass (ft2) Glass SHGC Total Radiation (kWh) Total Heat Gain (kWh)
Comparisons for Benchmarking Existing Building (SHGC = 0.4) Typical Curtain Wall (SHGC = 0.7) Proposed Design (kWh)
1 - (Proposed / Baseline) x 100
Performance Report Heat Gain Reduction (%) v Existing Heat Gain Reduction (%) v Typical
Report how much more efficient the proposed design is over a code-minimum Baseline (theoretical)
Total Area of Glass (ft2) x Glass SHGC x Total Radiation (kWh) = Total Heat Gain
DIVA calculates cumulative solar radiation incident on the building surface (kWh/m2). Extract the following values from DIVA/GH.
Enter Total Heat Gain from above in the Proposed Design cell. Have GH simulate an alternate version of the design as the code-minimum option. For that option, model a vertical wall with 40% window-to-wall ratio (window area / total wall area, incl. window area)
Import data from GH. Importing Glass, Wall and Floor area is simply surface areas.
Calculating Total RadiationTo import Total Radiation, in GH, first find a way to multiply the simulated kWh/m2 values by the the glass area within each threshold radiation threshold. One way to do this may be setting up threshold bands. For example, for all glass area between 500 and 600 kWh/m2, collect that glass area, and multiply by 550 kWh/m2. Do the same for all 100 kWh/m2 bands of data, and sum all kWh values from all radiation thresholds to obtain the total kWh for the entire wall.
Calculating Heat GainIf all three floors of the E building are being served by a single mechanical system, we do not need to calculate multiple heat gain values for each zone, we can sum all of the facade heat gain and assume the cooling load on the single rooftop system.
Perimeter Floor AreaBuildings typically divide perimeter zones seperately from core zones (15 to 30 foot perimeter depth). For perimeter area, sum the floor area on each floor within 15 feet of the exterior wall, i.e. building width x 15 feet floor depth x number of floors.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
DIVA GH/Excel ToolAB 2013_0316
Import from DIVA/GH Calculated Value User Input
Introduction
Imported Data from DIVA/Gh3D Total Area of Glass (ft2) Total Wall Area (ft2) Perimeter Floor Area (ft2) Total Radiation (kWh)
Heat Gain Calculation Total Area of Glass (ft2) Glass SHGC Total Radiation (kWh) Total Heat Gain (kWh)
Comparisons for Benchmarking Existing Building (SHGC = 0.4) Typical Curtain Wall (SHGC = 0.7) Proposed Design (kWh)
1 - (Proposed / Baseline) x 100
Performance Report Heat Gain Reduction (%) v Existing Heat Gain Reduction (%) v Typical
Report how much more efficient the proposed design is over a code-minimum Baseline (theoretical)
Total Area of Glass (ft2) x Glass SHGC x Total Radiation (kWh) = Total Heat Gain
DIVA calculates cumulative solar radiation incident on the building surface (kWh/m2). Extract the following values from DIVA/GH.
Enter Total Heat Gain from above in the Proposed Design cell. Have GH simulate an alternate version of the design as the code-minimum option. For that option, model a vertical wall with 40% window-to-wall ratio (window area / total wall area, incl. window area)
Import data from GH. Importing Glass, Wall and Floor area is simply surface areas.
Calculating Total RadiationTo import Total Radiation, in GH, first find a way to multiply the simulated kWh/m2 values by the the glass area within each threshold radiation threshold. One way to do this may be setting up threshold bands. For example, for all glass area between 500 and 600 kWh/m2, collect that glass area, and multiply by 550 kWh/m2. Do the same for all 100 kWh/m2 bands of data, and sum all kWh values from all radiation thresholds to obtain the total kWh for the entire wall.
Calculating Heat GainIf all three floors of the E building are being served by a single mechanical system, we do not need to calculate multiple heat gain values for each zone, we can sum all of the facade heat gain and assume the cooling load on the single rooftop system.
Perimeter Floor AreaBuildings typically divide perimeter zones seperately from core zones (15 to 30 foot perimeter depth). For perimeter area, sum the floor area on each floor within 15 feet of the exterior wall, i.e. building width x 15 feet floor depth x number of floors.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Variable Panel Concept (Cindy Alonzo)
low irradiancehigh irradiance
Variable Panel Concept (Cynthia Alonzo)
Variable Panel Concept (Luiza DeSouza) Variable Panel Concept (Ronny Mora)
low irradiancehigh irradiance
low irradiancehigh irradiance low irradiancehigh irradiance
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Cindy Alonzo
Cynthia Alonzo
Loft Curves Lofted SurfaceSubdivided
SurfaceRationalized
Glazing Panels
u12, v12
u8, v8
Luiza DeSouza
Ronny Mora
u6, v11
u8, v8
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Cindy Alonzo
Cynthia Alonzo
Offset Surface (Clashing Threat)
Subdivided Surface withSample Points and Normals
Solar Radiation Analysis
u12, v12
u16, v16
Luiza DeSouza
Ronny Mora
u12, v22
u8, v8
Lofted Surface
6”, 6”, 6”, 6” 47 - 700 w/m2
63 - 652 w/m212”, 12”, 12”, 12”
12”, 12”, 12”, 12” 104 - 990 w/m2
36”, 12”, 12”, 36” 5 - 414 w/m2
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Psychrometrics (Thermal Comfort)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
DIVA Simulation SettingsUsing Local Weather (EPW) File
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Responsive Screen (Cindy Alonzo)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Responsive Screen (Cynthia Alonzo)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Responsive Screen (Luiza DeSouza)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Responsive Screen (Ronny Mora)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
u8, v857 - 497 w/m2
u16, v81 - 541 w/m2
higher sampling needed
glazing8 - 846 w/m2
1 vector per panel
glazing16 - 338 w/m2
higher sampling needed again
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
RESPONSIVE SHADING SYSTEM (Rhino/Gh3D + DIVA)
Design to Subsurface Centroid315 w/m2
Design to Sampled Subsurface Mean337 w/m2
Design to Sample Subsurface Worst Case444 w/m2
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
ENERGY & DAYLIGHTING ANALYSISVasari / DIVA / EnergyPlus
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Natively Importing 3DM Geometryinto Vasari Beta 2 UsingCASEapps openNURBS
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Unsimplified PanelDevelopable (Planar) Geometry
2400 Faces (> 1024)
Simplified PanelUndevelopable Geometry
Max Deviation of 2.53” from Unsimplified
960 Faces (< 1024)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Vasari Limitations:Maximum Geometry Count
Alignment Issues with Non-Orthogonal GeometryInability to Handle Large, Complex Masses
Automated Analysis RangesOverall Lack of User Input for Analysis Tools
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
HVAC
Typical
Similarities Arising from Vasari’s Inability to Account for Change in
Lighting Energy
The lighting energy in the three scenarios is the result of having lights switched on from 8:00am to
5:00pm everyday of the year, regardless of daylight availability.
This is a limitation of user input options in the Vasari analysis
toolset, and a primary reason that, while good for preliminary
decisions early in the design process, Vasari is not a true
energy modeler.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Glazing Panels(Optimized for DIVA)
Glazing Panels(Optimized for OpenStudio/EnergyPlus)
Gap Modeled Between Glazing PanelsGap Modeled at Tops of Floor Slabs
Panels Placed on Layers Corresponding with Floor Level
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Existing Windows Glass Façade Shading Profile1 Shading Profile2 Shading Profile3 Shading Profile4
Heating 30019 35178 34708 31989 30167 33294
Cooling 45575 54244 54097 51356 45656 50961
Interior Lighting 97328 87822 88128 92128 94825 89053
Exterior Lighting 0 0 0 0 0 0
Interior Equipment 109200 109200 109200 109200 109200 109200
Exterior Equipment 0 0 0 0 0 0
Fans 31406 33358 33203 32464 31272 32486
Pumps 756 769 769 761 756 764
Heat Rejection 0 0 0 0 0 0
Humidification 0 0 0 0 0 0
Heat Recovery 0 0 0 0 0 0
Water Systems 0 0 0 0 0 0
Refrigeration 0 0 0 0 0 0
Generators 0 0 0 0 0 0
0 0 0 0 0 0
Total End Uses 314283 320575 320103 317897 311875 315756
Alonzo- CI Alonzo- CY DeSouza Mora
Existing Windows Glass Façade Shading1 Shading2 Shading3 Shading4
Glass façade over existing
Shadng 1 over glass
Shadng 2 over glass
Shadng 3 over glass
Shadng 4 over glass
Heating 30019 35178 34708 31989 30167 33294 -17% 1% -7% 14% 4%Cooling 45575 54244 54097 51356 45656 50961 -19% 0% -13% 16% 6%Interior Lighting 97328 87822 88128 92128 94825 89053 10% 0% 5% -8% -1%Interior Equipment 109200 109200 109200 109200 109200 109200 0% 0% 0% 0% 0%Fans 31406 33358 33203 32464 31272 32486 -6% 0% -3% 6% 2%Pumps 756 769 769 761 756 764 -2% 0% -1% 2% 1%Total 314283 320575 320103 317897 311875 315756 -2% 0% -1% 3% 1%
Area in sqm 1866 1866 1866 1866 1866 1866in kWh/sq.m 168 172 172 170 167 169
in Kwh
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Heating Cooling Interior Lighting
Energy Consumption in kWh
Existing Windows
Glass Façade
Shading1
Shading2
Shading3
Shading4
160
162
164
166
168
170
172
174
ExistingWindows
Glass Façade Shading1 Shading2 Shading3 Shading4
EUI in kWh/sq.m
Heating 10%
Cooling 14%
Interior Lighting
31%
Interior Equipment
35%
Fans 10%
Pumps
Existing Windows
Existing Windows Glass Façade Shading Profile1 Shading Profile2 Shading Profile3 Shading Profile4
Heating 30019 35178 34708 31989 30167 33294
Cooling 45575 54244 54097 51356 45656 50961
Interior Lighting 97328 87822 88128 92128 94825 89053
Exterior Lighting 0 0 0 0 0 0
Interior Equipment 109200 109200 109200 109200 109200 109200
Exterior Equipment 0 0 0 0 0 0
Fans 31406 33358 33203 32464 31272 32486
Pumps 756 769 769 761 756 764
Heat Rejection 0 0 0 0 0 0
Humidification 0 0 0 0 0 0
Heat Recovery 0 0 0 0 0 0
Water Systems 0 0 0 0 0 0
Refrigeration 0 0 0 0 0 0
Generators 0 0 0 0 0 0
0 0 0 0 0 0
Total End Uses 314283 320575 320103 317897 311875 315756
Alonzo- CI Alonzo- CY DeSouza Mora
Existing Windows Glass Façade Shading1 Shading2 Shading3 Shading4
Glass façade over existing
Shadng 1 over glass
Shadng 2 over glass
Shadng 3 over glass
Shadng 4 over glass
Heating 30019 35178 34708 31989 30167 33294 -17% 1% -7% 14% 4%Cooling 45575 54244 54097 51356 45656 50961 -19% 0% -13% 16% 6%Interior Lighting 97328 87822 88128 92128 94825 89053 10% 0% 5% -8% -1%Interior Equipment 109200 109200 109200 109200 109200 109200 0% 0% 0% 0% 0%Fans 31406 33358 33203 32464 31272 32486 -6% 0% -3% 6% 2%Pumps 756 769 769 761 756 764 -2% 0% -1% 2% 1%Total 314283 320575 320103 317897 311875 315756 -2% 0% -1% 3% 1%
Area in sqm 1866 1866 1866 1866 1866 1866in kWh/sq.m 168 172 172 170 167 169
in Kwh
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Heating Cooling Interior Lighting
Energy Consumption in kWh
Existing Windows
Glass Façade
Shading1
Shading2
Shading3
Shading4
160
162
164
166
168
170
172
174
ExistingWindows
Glass Façade Shading1 Shading2 Shading3 Shading4
EUI in kWh/sq.m
Heating 10%
Cooling 14%
Interior Lighting
31%
Interior Equipment
35%
Fans 10%
Pumps
Existing Windows
Existing Windows Glass Façade Shading Profile1 Shading Profile2 Shading Profile3 Shading Profile4
Heating 30019 35178 34708 31989 30167 33294
Cooling 45575 54244 54097 51356 45656 50961
Interior Lighting 97328 87822 88128 92128 94825 89053
Exterior Lighting 0 0 0 0 0 0
Interior Equipment 109200 109200 109200 109200 109200 109200
Exterior Equipment 0 0 0 0 0 0
Fans 31406 33358 33203 32464 31272 32486
Pumps 756 769 769 761 756 764
Heat Rejection 0 0 0 0 0 0
Humidification 0 0 0 0 0 0
Heat Recovery 0 0 0 0 0 0
Water Systems 0 0 0 0 0 0
Refrigeration 0 0 0 0 0 0
Generators 0 0 0 0 0 0
0 0 0 0 0 0
Total End Uses 314283 320575 320103 317897 311875 315756
Alonzo- CI Alonzo- CY DeSouza Mora
Existing Windows Glass Façade Shading1 Shading2 Shading3 Shading4
Glass façade over existing
Shadng 1 over glass
Shadng 2 over glass
Shadng 3 over glass
Shadng 4 over glass
Heating 30019 35178 34708 31989 30167 33294 -17% 1% -7% 14% 4%Cooling 45575 54244 54097 51356 45656 50961 -19% 0% -13% 16% 6%Interior Lighting 97328 87822 88128 92128 94825 89053 10% 0% 5% -8% -1%Interior Equipment 109200 109200 109200 109200 109200 109200 0% 0% 0% 0% 0%Fans 31406 33358 33203 32464 31272 32486 -6% 0% -3% 6% 2%Pumps 756 769 769 761 756 764 -2% 0% -1% 2% 1%Total 314283 320575 320103 317897 311875 315756 -2% 0% -1% 3% 1%
Area in sqm 1866 1866 1866 1866 1866 1866in kWh/sq.m 168 172 172 170 167 169
in Kwh
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Heating Cooling Interior Lighting
Energy Consumption in kWh
Existing Windows
Glass Façade
Shading1
Shading2
Shading3
Shading4
160
162
164
166
168
170
172
174
ExistingWindows
Glass Façade Shading1 Shading2 Shading3 Shading4
EUI in kWh/sq.m
Heating 10%
Cooling 14%
Interior Lighting
31%
Interior Equipment
35%
Fans 10%
Pumps
Existing Windows
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Existing Windows Glass Façade Shading Profile1 Shading Profile2 Shading Profile3 Shading Profile4
Heating 30019 35178 34708 31989 30167 33294
Cooling 45575 54244 54097 51356 45656 50961
Interior Lighting 97328 87822 88128 92128 94825 89053
Exterior Lighting 0 0 0 0 0 0
Interior Equipment 109200 109200 109200 109200 109200 109200
Exterior Equipment 0 0 0 0 0 0
Fans 31406 33358 33203 32464 31272 32486
Pumps 756 769 769 761 756 764
Heat Rejection 0 0 0 0 0 0
Humidification 0 0 0 0 0 0
Heat Recovery 0 0 0 0 0 0
Water Systems 0 0 0 0 0 0
Refrigeration 0 0 0 0 0 0
Generators 0 0 0 0 0 0
0 0 0 0 0 0
Total End Uses 314283 320575 320103 317897 311875 315756
Alonzo- CI Alonzo- CY DeSouza Mora
Existing Windows Glass Façade Shading1 Shading2 Shading3 Shading4
Glass façade over existing
Shadng 1 over glass
Shadng 2 over glass
Shadng 3 over glass
Shadng 4 over glass
Heating 30019 35178 34708 31989 30167 33294 -17% 1% -7% 14% 4%Cooling 45575 54244 54097 51356 45656 50961 -19% 0% -13% 16% 6%Interior Lighting 97328 87822 88128 92128 94825 89053 10% 0% 5% -8% -1%Interior Equipment 109200 109200 109200 109200 109200 109200 0% 0% 0% 0% 0%Fans 31406 33358 33203 32464 31272 32486 -6% 0% -3% 6% 2%Pumps 756 769 769 761 756 764 -2% 0% -1% 2% 1%Total 314283 320575 320103 317897 311875 315756 -2% 0% -1% 3% 1%
Area in sqm 1866 1866 1866 1866 1866 1866in kWh/sq.m 168 172 172 170 167 169
in Kwh
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Heating Cooling Interior Lighting
Energy Consumption in kWh
Existing Windows
Glass Façade
Shading1
Shading2
Shading3
Shading4
160
162
164
166
168
170
172
174
ExistingWindows
Glass Façade Shading1 Shading2 Shading3 Shading4
EUI in kWh/sq.m
Heating 10%
Cooling 14%
Interior Lighting
31%
Interior Equipment
35%
Fans 10%
Pumps
Existing Windows
Existing Windows Glass Façade Shading Profile1 Shading Profile2 Shading Profile3 Shading Profile4
Heating 30019 35178 34708 31989 30167 33294
Cooling 45575 54244 54097 51356 45656 50961
Interior Lighting 97328 87822 88128 92128 94825 89053
Exterior Lighting 0 0 0 0 0 0
Interior Equipment 109200 109200 109200 109200 109200 109200
Exterior Equipment 0 0 0 0 0 0
Fans 31406 33358 33203 32464 31272 32486
Pumps 756 769 769 761 756 764
Heat Rejection 0 0 0 0 0 0
Humidification 0 0 0 0 0 0
Heat Recovery 0 0 0 0 0 0
Water Systems 0 0 0 0 0 0
Refrigeration 0 0 0 0 0 0
Generators 0 0 0 0 0 0
0 0 0 0 0 0
Total End Uses 314283 320575 320103 317897 311875 315756
Alonzo- CI Alonzo- CY DeSouza Mora
Existing Windows Glass Façade Shading1 Shading2 Shading3 Shading4
Glass façade over existing
Shadng 1 over glass
Shadng 2 over glass
Shadng 3 over glass
Shadng 4 over glass
Heating 30019 35178 34708 31989 30167 33294 -17% 1% -7% 14% 4%Cooling 45575 54244 54097 51356 45656 50961 -19% 0% -13% 16% 6%Interior Lighting 97328 87822 88128 92128 94825 89053 10% 0% 5% -8% -1%Interior Equipment 109200 109200 109200 109200 109200 109200 0% 0% 0% 0% 0%Fans 31406 33358 33203 32464 31272 32486 -6% 0% -3% 6% 2%Pumps 756 769 769 761 756 764 -2% 0% -1% 2% 1%Total 314283 320575 320103 317897 311875 315756 -2% 0% -1% 3% 1%
Area in sqm 1866 1866 1866 1866 1866 1866in kWh/sq.m 168 172 172 170 167 169
in Kwh
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Heating Cooling Interior Lighting
Energy Consumption in kWh
Existing Windows
Glass Façade
Shading1
Shading2
Shading3
Shading4
160
162
164
166
168
170
172
174
ExistingWindows
Glass Façade Shading1 Shading2 Shading3 Shading4
EUI in kWh/sq.m
Heating 10%
Cooling 14%
Interior Lighting
31%
Interior Equipment
35%
Fans 10%
Pumps
Existing Windows
Existing Windows Glass Façade Shading Profile1 Shading Profile2 Shading Profile3 Shading Profile4
Heating 30019 35178 34708 31989 30167 33294
Cooling 45575 54244 54097 51356 45656 50961
Interior Lighting 97328 87822 88128 92128 94825 89053
Exterior Lighting 0 0 0 0 0 0
Interior Equipment 109200 109200 109200 109200 109200 109200
Exterior Equipment 0 0 0 0 0 0
Fans 31406 33358 33203 32464 31272 32486
Pumps 756 769 769 761 756 764
Heat Rejection 0 0 0 0 0 0
Humidification 0 0 0 0 0 0
Heat Recovery 0 0 0 0 0 0
Water Systems 0 0 0 0 0 0
Refrigeration 0 0 0 0 0 0
Generators 0 0 0 0 0 0
0 0 0 0 0 0
Total End Uses 314283 320575 320103 317897 311875 315756
Alonzo- CI Alonzo- CY DeSouza Mora
Existing Windows Glass Façade Shading1 Shading2 Shading3 Shading4
Glass façade over existing
Shadng 1 over glass
Shadng 2 over glass
Shadng 3 over glass
Shadng 4 over glass
Heating 30019 35178 34708 31989 30167 33294 -17% 1% -7% 14% 4%Cooling 45575 54244 54097 51356 45656 50961 -19% 0% -13% 16% 6%Interior Lighting 97328 87822 88128 92128 94825 89053 10% 0% 5% -8% -1%Interior Equipment 109200 109200 109200 109200 109200 109200 0% 0% 0% 0% 0%Fans 31406 33358 33203 32464 31272 32486 -6% 0% -3% 6% 2%Pumps 756 769 769 761 756 764 -2% 0% -1% 2% 1%Total 314283 320575 320103 317897 311875 315756 -2% 0% -1% 3% 1%
Area in sqm 1866 1866 1866 1866 1866 1866in kWh/sq.m 168 172 172 170 167 169
in Kwh
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Heating Cooling Interior Lighting
Energy Consumption in kWh
Existing Windows
Glass Façade
Shading1
Shading2
Shading3
Shading4
160
162
164
166
168
170
172
174
ExistingWindows
Glass Façade Shading1 Shading2 Shading3 Shading4
EUI in kWh/sq.m
Heating 10%
Cooling 14%
Interior Lighting
31%
Interior Equipment
35%
Fans 10%
Pumps
Existing Windows
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
DIVA GH/Excel ToolAB 2013_0316
Import from DIVA/GH Calculated Value User Input
Introduction
Imported Data from DIVA/Gh3D Total Area of Glass (ft2) Total Wall Area (ft2) Perimeter Floor Area (ft2) Total Radiation (kWh)Cindy Alonzo 5209.773603 3583.391062 490301.7204
Cynthia Alonzo 4605.551257 2361.897555 681729.406Luiza DeSouza 4548.728991 37523.53676 2214297.921
Ronny Mora 5401.537673 4348.285306 495919.9132AVERAGE 4941.397881 11954.27767 0 970562.2403
Heat Gain Calculation Total Area of Glass (ft2) Glass SHGC Total Radiation (kWh) Total Heat Gain (kWh)Cindy Alonzo 5209.773603 0.7 490301.7204 1788100000.00
Cynthia Alonzo 4605.551257 0.7 681729.406 2197800000.00Luiza DeSouza 4548.728991 0.7 2214297.921 7050600000.00
Ronny Mora 5401.537673 0.7 495919.9132 1875100000.00AVERAGE 4941.397881 0.7 970562.2403 3227900000
Comparisons for Benchmarking Existing Building (SHGC = 0.4) Typical Curtain Wall (SHGC = 0.7) Proposed Design (kWh)Cindy Alonzo 1788100000.00
Cynthia Alonzo 2197800000.00Luiza DeSouza 7050600000.00
Ronny Mora 1875100000.00AVERAGE 3227900000
1 - (Proposed / Baseline) x 100
Performance Report Heat Gain Reduction (%) v Existing Heat Gain Reduction (%) v TypicalCindy Alonzo
Cynthia AlonzoLuiza DeSouza
Ronny MoraAVERAGE
Report how much more efficient the proposed design is over a code-minimum Baseline (theoretical)
Total Area of Glass (ft2) x Glass SHGC x Total Radiation (kWh) = Total Heat Gain
DIVA calculates cumulative solar radiation incident on the building surface (kWh/m2). Extract the following values from DIVA/GH.
Enter Total Heat Gain from above in the Proposed Design cell. Have GH simulate an alternate version of the design as the code-minimum option. For that option, model a vertical wall with 40% window-to-wall ratio (window area / total wall area, incl. window area)
Import data from GH. Importing Glass, Wall and Floor area is simply surface areas.
Calculating Total RadiationTo import Total Radiation, in GH, first find a way to multiply the simulated kWh/m2 values by the the glass area within each threshold radiation threshold. One way to do this may be setting up threshold bands. For example, for all glass area between 500 and 600 kWh/m2, collect that glass area, and multiply by 550 kWh/m2. Do the same for all 100 kWh/m2 bands of data, and sum all kWh values from all radiation thresholds to obtain the total kWh for the entire wall.
Calculating Heat GainIf all three floors of the E building are being served by a single mechanical system, we do not need to calculate multiple heat gain values for each zone, we can sum all of the facade heat gain and assume the cooling load on the single rooftop system.
Perimeter Floor AreaBuildings typically divide perimeter zones seperately from core zones (15 to 30 foot perimeter depth). For perimeter area, sum the floor area on each floor within 15 feet of the exterior wall, i.e. building width x 15 feet floor depth x number of floors.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Building Envelope Trade-Off Option
5-20 User’s Manual for ANSI/ASHRAE/IESNA Standard 90.1-2007
Table 5-C—Example Prescriptive Criteria Set, St. Louis, Missouri
(This is Table 5.5-4 in the Standard.)
Building Envelope Requirements for Climate Zone 4 (A,B,C)
NONRESIDENTIAL RESIDENTIAL SEMIHEATED Assembly Insulation Assembly Insulation Assembly Insulation OPAQUE ELEMENTS Maximum Min. R-Value Maximum Min. R-value Maximum Min. R-Value Roofs Insulation Entirely above Deck U-0.048 R-20.0 ci U-0.048 R-20.0 ci U-0.173 R-5.0 ci Metal Building U-0.065 R-19.0 U-0.065 R-19.0 U-0.097 R-10.0 Attic and Other U-0.027 R-38.0 U-0.027 R-38.0 U-0.053 R-19.0 Walls, Above-Grade Mass U-0.104 R-9.5 ci U-0.090 R-11.4 ci U-0.580 NR Metal Building U-0.113 R-13.0 U-0.113 R-13.0 U-0.134 R-10.0 Steel-Framed U-0.064 R-13.0 + R-7.5 ci U-0.064 R-13.0 + R-7.5 ci U-0.124 R-13.0 Wood-Framed and Other U-0.089 R-13.0 U-0.064 R-13.0 + R-3.8
ci U-0.089 R-13.0
Wall, Below-Grade Below-Grade Wall C-1.140 NR C-0.119 R-7.5 ci C-1.140 NR Floors Mass U-0.087 R-8.3 ci U-0.074 R-10.4 ci U-0.137 R-4.2 ci Steel-Joist U-0.038 R-30.0 U-0.038 R-30.0 U-0.069 R-13.0 Wood-Framed and Other U-0.033 R-30.0 U-0.033 R-30.0 U-0.066 R-13.0 Slab-On-Grade Floors Unheated F-0.730 NR F-0.540 R-10 for 24 in. F-0.730 NR Heated F-0.860 R-15 for 24 in. F-0.860 R-15 for 24 in. F-1.020 R-7.5 for 12 in. Opaque Doors Swinging U-0.700 U-0.700 U-0.700 U-0.500 U-0.500 U-1.450 Assembly Assembly Assembly Assembly Assembly Assembly FENESTRATION Max. U Max. SHGC Max. U Max. SHGC Max. U Max. SHGC Vertical Glazing, 0-40% of Wall Nonmetal framing, alla U-0.40 U-0.40 U-1.20 Metal framing, curtainwall/storefrontb U-0.50 U-0.50 U-1.20 Metal framing, entrance doorb U-0.85 U-0.85 U-1.20 Metal framing, all otherb U-0.55
SGHC-0.40 all
U-0.55
SGHC-0.40 all
U-1.20
SGHC-NR all
Skylight with Curb, Glass, % of Roof 0-2.0% Uall-1.17 SHGCall- 0.49 Uall-0.98 SHGCall- 0.36 Uall-1.98 SHGCall- NR 2.1-5.0% Uall-1.17 SHGCall- 0.39 Uall-0.98 SHGCall- 0.19 Uall-1.98 SHGCall- NR Skylight with Curb, Plastic, % of Roof 0-2.0% Uall-1.30 SHGCall- 0.65 Uall-1.30 SHGCall- 0.62 Uall-1.90 SHGCall- NR 2.1-5.0% Uall-1.30 SHGCall- 0.34 Uall-1.30 SHGCall- 0.27 Uall-1.90 SHGCall- NR Skylight without Curb, All, % of Roof 0-2.0% Uall-0.69 SHGCall- 0.49 Uall-0.58 SHGCall- 0.36 Uall-1.36 SHGCall- NR 2.1-5.0% Uall-0.69 SHGCall- 0.39 Uall-0.58 SHGCall- 0.19 Uall-1.36 SHGCall- NR a Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. b Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance.
ASHRAE Standard 90.1Table 5-C
The specified solar heat gain coefficient for a non-residential curtain wall with metal framing in
climate zone 4 is 0.40.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
DIVA GH/Excel ToolAB 2013_0316
Import from DIVA/GH Calculated Value User Input
Introduction
Imported Data from DIVA/Gh3D Total Area of Glass (ft2) Total Wall Area (ft2) Perimeter Floor Area (ft2) Total Radiation (kWh)Cindy Alonzo 5209.773603 3583.391062 490301.7204
Cynthia Alonzo 4605.551257 2361.897555 681729.406Luiza DeSouza 4548.728991 37523.53676 2214297.921
Ronny Mora 5401.537673 4348.285306 495919.9132AVERAGE 4941.397881 11954.27767 0 970562.2403
Heat Gain Calculation Total Area of Glass (ft2) Glass SHGC Total Radiation (kWh) Total Heat Gain (kWh)Cindy Alonzo 5209.773603 0.7 490301.7204 1788100000.00
Cynthia Alonzo 4605.551257 0.7 681729.406 2197800000.00Luiza DeSouza 4548.728991 0.7 2214297.921 7050600000.00
Ronny Mora 5401.537673 0.7 495919.9132 1875100000.00AVERAGE 4941.397881 0.7 970562.2403 3227900000
Comparisons for Benchmarking Existing Building (SHGC = 0.4) Typical Curtain Wall (SHGC = 0.7) Proposed Design (kWh)Cindy Alonzo 1788100000.00
Cynthia Alonzo 2197800000.00Luiza DeSouza 7050600000.00
Ronny Mora 1875100000.00AVERAGE 3227900000
1 - (Proposed / Baseline) x 100
Performance Report Heat Gain Reduction (%) v Existing Heat Gain Reduction (%) v TypicalCindy Alonzo
Cynthia AlonzoLuiza DeSouza
Ronny MoraAVERAGE
Report how much more efficient the proposed design is over a code-minimum Baseline (theoretical)
Total Area of Glass (ft2) x Glass SHGC x Total Radiation (kWh) = Total Heat Gain
DIVA calculates cumulative solar radiation incident on the building surface (kWh/m2). Extract the following values from DIVA/GH.
Enter Total Heat Gain from above in the Proposed Design cell. Have GH simulate an alternate version of the design as the code-minimum option. For that option, model a vertical wall with 40% window-to-wall ratio (window area / total wall area, incl. window area)
Import data from GH. Importing Glass, Wall and Floor area is simply surface areas.
Calculating Total RadiationTo import Total Radiation, in GH, first find a way to multiply the simulated kWh/m2 values by the the glass area within each threshold radiation threshold. One way to do this may be setting up threshold bands. For example, for all glass area between 500 and 600 kWh/m2, collect that glass area, and multiply by 550 kWh/m2. Do the same for all 100 kWh/m2 bands of data, and sum all kWh values from all radiation thresholds to obtain the total kWh for the entire wall.
Calculating Heat GainIf all three floors of the E building are being served by a single mechanical system, we do not need to calculate multiple heat gain values for each zone, we can sum all of the facade heat gain and assume the cooling load on the single rooftop system.
Perimeter Floor AreaBuildings typically divide perimeter zones seperately from core zones (15 to 30 foot perimeter depth). For perimeter area, sum the floor area on each floor within 15 feet of the exterior wall, i.e. building width x 15 feet floor depth x number of floors.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
DIVA GH/Excel ToolAB 2013_0316
Import from DIVA/GH Calculated Value User Input
Introduction
Imported Data from DIVA/Gh3D Total Area of Glass (ft2) Total Wall Area (ft2) Perimeter Floor Area (ft2) Total Radiation (kWh)Cindy Alonzo 5209.773603 3583.391062 490301.7204
Cynthia Alonzo 4605.551257 2361.897555 681729.406Luiza DeSouza 4548.728991 37523.53676 2214297.921
Ronny Mora 5401.537673 4348.285306 495919.9132AVERAGE 4941.397881 11954.27767 0 970562.2403
Heat Gain Calculation Total Area of Glass (ft2) Glass SHGC Total Radiation (kWh) Total Heat Gain (kWh)Cindy Alonzo 5209.773603 0.7 490301.7204 1788100000.00
Cynthia Alonzo 4605.551257 0.7 681729.406 2197800000.00Luiza DeSouza 4548.728991 0.7 2214297.921 7050600000.00
Ronny Mora 5401.537673 0.7 495919.9132 1875100000.00AVERAGE 4941.397881 0.7 970562.2403 3227900000
Comparisons for Benchmarking Existing Building (SHGC = 0.4) Typical Curtain Wall (SHGC = 0.7) Proposed Design (kWh)Cindy Alonzo 1788100000.00
Cynthia Alonzo 2197800000.00Luiza DeSouza 7050600000.00
Ronny Mora 1875100000.00AVERAGE 3227900000
1 - (Proposed / Baseline) x 100
Performance Report Heat Gain Reduction (%) v Existing Heat Gain Reduction (%) v TypicalCindy Alonzo
Cynthia AlonzoLuiza DeSouza
Ronny MoraAVERAGE
Report how much more efficient the proposed design is over a code-minimum Baseline (theoretical)
Total Area of Glass (ft2) x Glass SHGC x Total Radiation (kWh) = Total Heat Gain
DIVA calculates cumulative solar radiation incident on the building surface (kWh/m2). Extract the following values from DIVA/GH.
Enter Total Heat Gain from above in the Proposed Design cell. Have GH simulate an alternate version of the design as the code-minimum option. For that option, model a vertical wall with 40% window-to-wall ratio (window area / total wall area, incl. window area)
Import data from GH. Importing Glass, Wall and Floor area is simply surface areas.
Calculating Total RadiationTo import Total Radiation, in GH, first find a way to multiply the simulated kWh/m2 values by the the glass area within each threshold radiation threshold. One way to do this may be setting up threshold bands. For example, for all glass area between 500 and 600 kWh/m2, collect that glass area, and multiply by 550 kWh/m2. Do the same for all 100 kWh/m2 bands of data, and sum all kWh values from all radiation thresholds to obtain the total kWh for the entire wall.
Calculating Heat GainIf all three floors of the E building are being served by a single mechanical system, we do not need to calculate multiple heat gain values for each zone, we can sum all of the facade heat gain and assume the cooling load on the single rooftop system.
Perimeter Floor AreaBuildings typically divide perimeter zones seperately from core zones (15 to 30 foot perimeter depth). For perimeter area, sum the floor area on each floor within 15 feet of the exterior wall, i.e. building width x 15 feet floor depth x number of floors.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
ENERGY & DAYLIGHTING ANALYSIS (Vasari/DIVA/EnergyPlus)
Recommended Light Levelin Different Workspaces
(from engineeringtoolbox.com)
Mean Daylight Autonomy
Expected to qualify for LEED-NC 2.1 Daylighting Credit 8.1
Daylit Area (DA 300lux[50%])
Cindy 95% Yes 100% 18.60%Cynthia 95% Yes 100% 32.10%Ronny 95% Yes 100% 20.60%Luiza 95% Yes 100% 19.50%
Existing Building 69% No 76% 2.40%
Mean Daylight Autonomy(from DIVA calculations)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
FURTHER WORKBIM Integration, Fabrication, & Field Testing
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
BIM Integration Using Typical Curtain Wall(Not Ideal)
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
BIM Integration Using Custom Pattern Curtain Walls (Model by Dave Fano, CASE)
BIM Integration Using Adaptive Components & Python Shell
(Model by Nathan Miller, CASE)
Many Grasshopper Tools (Including Chameleon)
Have Adaptive ComponentsInteroperability Tools
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
Typical Waterjet Layout
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
HOW TO GENERATE FLAT PATTERNS FOR SHEET METAL PARTS:
WHEN THE SHEET METAL IS PUT THROUGH THE PROCESS OF BENDING THE METAL AROUND THE BEND IS DEFORMED AND STRETCHED. AS THIS HAPPENS YOU GAIN A SMALL AMOUNT OF TOTAL LENGTH IN YOUR PART(BEND ALLOWANCE). LIKEWISE WHEN YOU ARE TRYING TO DEVELOP A FLAT PATTERN YOU WILL HAVE TO MAKE A DEDUCTION FROM YOUR DE-SIRED PART SIZE TO GET THE CORRECT FLAT SIZE(BEND DEDUCTION).
BEND DEDUCTION:
THE BEND DEDUCTION IS DEFINED AS THE MATERIAL YOU WILL HAVE TO REMOVE FROM THE TOTAL LENGTH OF YOUR FLANGES IN ORDER TO ARRIVE AT THE FLAT PATTERN.
BEND ALLOWANCE:
THE BEND ALLOWANCE IS DEFINED AS THE MATERIAL YOU WILL ADD TO THE ACTUAL LEG LENGTHS OF THE PART IN OR-DER TO DEVELOP A FLAT PATTERN.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
TYPES OF BENDING:
AIR BENDING:
IS THE MOST COMMON TYPE OF BENDING PROCESS USED IN SHEET METAL SHOPS TODAY. IN THIS PROCESS THE WORK PIECE IS ONLY IN CONTACT WITH THE EDGE OF THE DIE AND THE TIP OF THE PUNCH. THE PUNCH IS THEM FORCED PAST THE TOP OF THE DIE INTO THE V-OPENING WITHOUT COMING INTO CONTACT WITH THE BOTTOM OF THE V.
COINING:
IS A BASIC TYPE OF BENDING IN WHICH THE WORKPIECE IS STAMPED BETWEEN THE PUNCH AND DIE. BOTH THE PUNCH TIP AND THE PUNCH ACTUALLY PENETRATE INTO THE METAL PAST THE NEUTRAL AXIS UNDER A HIGH AMOUNT OF PRES-SURE. THE TERM COINING COMES FROM THE IDEA THAT WHEN IT COMES TO MONEY EACH METAL COIN IS MADE EXACT-LY THE SAME AS THE LAST DESPITE BEING MASS PRODUCED. FROM THIS IDEA THE NAME COINING WAS APPLIED TO THE BENDING METHOD WHICH CREATES ACCURATE BENDS CONSISTENTLY.
BOTTOM BENDING:
HAS SIMILARITIES TO BOTH AIR BENDING AND COINING. IN THIS PROCESS THE DIE ANGLE SHOULD MATCH THE INTEND-ED ANGLE OF THE WORK PIECE, ADJUSTING A FEW DEGREES FOR SPRING BACK, HENCE THE EXISTENCE OF 88 DEGREE TOOLING TO ACHIEVE 90 DEGREE ANGLES. THE WORK PIECE IS FIRST BOTTOMED AGAINST THE DIE, THEN THE RADIUS OF THE PUNCH IS FORCED INTO THE WORK PIECE WHICH ACHIEVES THE ANGLE OF THE PUNCH, IT IS THEN RELEASED AND THE WORK PIECE SPRINGS BACK TO MEET THE DIE AGAIN. UNLIKE COINING HOWEVER THE MATERIAL IS NOT UN-DER SO MUCH TONNAGE ..THAT THE METAL FLOWS. BECAUSE OF THIS THERE IS STILL SPRING BACK WHICH MUST BE COMPENSATED FOR.
AIR BENDING BOTTOM BENDINGCOINING
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
120°
"
TYP. FOR ALLINSIDE RADII
1.68
"1.
48"
3.00"
2.85
"
3.00"
3.21
"
3.00"
2.85
"
3.00"
57.70"
57.7
0"
18.0
0"
11.1
2"
TH IS SHOP DRAWING ISRELEASED BY FLATCUT_LLC FOR APPROVAL INTENTFOR CUSTOMER ONLY. THEINFORMATION CONTAINEDHEREIN REMAINS NOT FORF A B R IC A T IO N P E N D IN GF I N A L R E V I E W A N DRELEASE OF APPROVEDS H O P D R A W I N G S .
F L A T C U T _ L L CN E W Y O R K6 8 J A Y S T R E E TS T U D I O 8 0 1B R O O K L Y N N Y 1 1 2 0 1
F L A T C U T _ L L CN E W J E R S E Y9 0 D A Y T O N A V E N U EB L D G . 1 6 CP A S S A I C , N J 0 7 0 5 5
P : 2 1 2 - 5 4 2 - 5 7 3 2F : 2 1 2 - 5 4 2 - 5 7 3 3
SIGNATURE OFAPPROVAL
BENDING DRAWING CONVENTIONS:
• 3 POINT PROJECTION• FLANGE LENGTH DIMENSIONS FROM APEX OF ANGLE.• INDICATE INSIDE BEND ANGLE• PROVIDE ISOMETRIC VIEWS OF PART FOR REFERENCE.• INDICATE METAL GAGE/THICKNESS.
TYPICAL PLAN VIEW INDICATING FLANGE LENGTH AND BEND ANGLES
120°
"
TYP. FOR ALLINSIDE RADII
1.68
"1.
48"
3.00"
2.85
"
3.00"
3.21
"
3.00"
2.85
"
3.00"
57.70"
57.7
0"
18.0
0"
11.1
2"
TH IS SHOP DRAWING ISRELEASED BY FLATCUT_LLC FOR APPROVAL INTENTFOR CUSTOMER ONLY. THEINFORMATION CONTAINEDHEREIN REMAINS NOT FORF A B R IC A T IO N P E N D IN GF I N A L R E V I E W A N DRELEASE OF APPROVEDS H O P D R A W I N G S .
F L A T C U T _ L L CN E W Y O R K6 8 J A Y S T R E E TS T U D I O 8 0 1B R O O K L Y N N Y 1 1 2 0 1
F L A T C U T _ L L CN E W J E R S E Y9 0 D A Y T O N A V E N U EB L D G . 1 6 CP A S S A I C , N J 0 7 0 5 5
P : 2 1 2 - 5 4 2 - 5 7 3 2F : 2 1 2 - 5 4 2 - 5 7 3 3
SIGNATURE OFAPPROVAL
TYPICAL BENDING DRAWING SHOWING 3 POINT PROJECTION VIEW LAY-OUT AND ISOMETRIC VIEWS.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
FURTHER WORK
HOW TO GENERATE FLAT PATTERNS FOR SHEET METAL PARTS:
WHEN THE SHEET METAL IS PUT THROUGH THE PROCESS OF BENDING THE METAL AROUND THE BEND IS DEFORMED AND STRETCHED. AS THIS HAPPENS YOU GAIN A SMALL AMOUNT OF TOTAL LENGTH IN YOUR PART(BEND ALLOWANCE). LIKEWISE WHEN YOU ARE TRYING TO DEVELOP A FLAT PATTERN YOU WILL HAVE TO MAKE A DEDUCTION FROM YOUR DE-SIRED PART SIZE TO GET THE CORRECT FLAT SIZE(BEND DEDUCTION).
BEND DEDUCTION:
THE BEND DEDUCTION IS DEFINED AS THE MATERIAL YOU WILL HAVE TO REMOVE FROM THE TOTAL LENGTH OF YOUR FLANGES IN ORDER TO ARRIVE AT THE FLAT PATTERN.
BEND ALLOWANCE:
THE BEND ALLOWANCE IS DEFINED AS THE MATERIAL YOU WILL ADD TO THE ACTUAL LEG LENGTHS OF THE PART IN OR-DER TO DEVELOP A FLAT PATTERN.
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
COLLABORATION TOOLS
COLLABORATION TOOLS
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
COLLABORATION TOOLS
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
COLLABORATION TOOLS
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
COLLABORATION TOOLS
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
COLLABORATION TOOLS
Closing the Loop: Completing the Design/Analysis > Fabrication > Validation Cycle
New York City College of Technology (CUNY) International High Performance Building Conference 2013
COLLABORATION TOOLS
Thanks.