New Life

Just finished packaging, tomorrow will be my last day at Swift Lee Office. The major parts of LAUSD have done, Nicole will finish the rest works in the next two weeks.

I will move to San Diego on Saturday. Just read the news from Balfour Beatty’s website that Barnhart was officially become a part of Balfour Beatty Construction this week, and they just moved to a new fancy place this monday.

Today when I visit Barnhart’s website, it showed service unavailable, and I noticed Brad was in Balfour Beatty Construction’s leadership list. Congratulations for him! I hope I can learn a lot from him.

Barnhart is just starting his new life as a part of Balfour Beatty. Same with me, I’m starting my new life in my career.

I feel so lucky to choose BIM as my career. It’s BIM makes me know all you guys, Karen, Eve, Gloria, Brad, Daniel……

I don’t know how to make a personal’s website, so I used wordpress as my worksample place during the job hunting. Now, I got one, the ideal one, the most excited one, its seems its the time to let the wordpress go back to normal.

Thank you all guys!

I hope everything will be fine, for me, for Swift Lee Office, for Balfour Beatty Construction, for you.

2011
09/29
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Some Work Samples

2011
07/24
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A question about Revit

2011
05/20
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Interior design in Revit

This semester, I am working as an BIM modeler at USC Information Technology Services, working on the interior modeling of Seeley G.Mudd Building. I created mutiple families of auditorium system, which are used for different design optionsfuture facility management. I also provide different design options for the classrooms in SGM.

These interior designs are all based on Revit parametric designs. Different families are created, by changing their parameters, diferent design options can be provided.

2011
04/06
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Using Revit Schedule to Calculate Energy Production

This method can be applied for LEED NC Energy & Atmosphere Credit 2. This credit requires a calculation for the energy generated by a renewable source.

For example, a typical wind turbine model can be selected and the proper values put in according to the manufacturer’s specifications. To make the example more flexible, data was added for seven types of turbine models from one manufacturer (ROPATEC 2011):  Easy Vertical (1), Simply Vertical (2), Simply Vertical HE (3), Maxi Vertical (4), Maxi Vertical HE (5), Big Star Vertical HE (6), and Giga Star (7).  Then an if/then statement was set up to determine the “Surface” for each model.

if(Turbine Model = 1, 2.07, if(Turbine Model = 2, 6.6, if(Turbine Model = 3, 9.9, if(Turbine Model = 4, 11.5, if(Turbine Model = 5, 16.1, if(Turbine Model = 6, 34.4, if(Turbine Model = 7, 46.4, 0))))))) 

This statement will help Revit automatically generate the value of “Surface” according to the different turbine models. Using the same method, the parameter of “Wind Power,” which varies for different wind speeds, uses a similar conditional statement as shown below:

if(Wind Speed = 4, 697, if(Wind Speed = 5, 1508, if(Wind Speed = 6, 2774, if(Wind Speed = 7, 4672, if(Wind Speed = 8, 7173, if(Wind Speed = 9, 10213, if(Wind Speed = 10, 14010, if(Wind Speed = 11, 18648, if(Wind Speed = 12, 24438, if(Wind Speed > 12, 24438, 0))))))))))

The formulas can get more complex. The statement below is part of the calculation formula; it will let Revit automatically select values according to different situations.

 (if ( and (Wind Speed = 4 , Turbine Model = 7), 713.44 , if ( and (Wind Speed = 4 , Turbine Model = 6), 241 , if ( and (Wind Speed = 4 , Turbine Model = 5), 157 , if ( and (Wind Speed = 4 , Turbine Model = 4), 112 , if ( and (Wind Speed = 4 , Turbine Model = 3), 96 , if ( and (Wind Speed = 4 , Turbine Model = 2), 64 , if ( and (Wind Speed = 4 , Turbine Model = 1), 17 , if ( and (Wind Speed = 5 , Turbine Model = 7), 1542.734 , if ( and (Wind Speed = 5 , Turbine Model = 6), 500 , if ( and (Wind Speed = 5 , Turbine Model = 5), 314 , if ( and (Wind Speed = 5 , Turbine Model = 4), 224 , if ( and (Wind Speed = 5 , Turbine Model = 3), 191 , if ( and (Wind Speed = 5 , Turbine Model = 2), 127 , if ( and (Wind Speed = 5 , Turbine Model = 1), 33 , 0))))))))))))))/Surface)/ (Wind Speed ^3*1.225*0.5)

Other parameters and calculations are shown in figure above. The final schedule of this credit is shown in figure below.

Similar methods can be apply to other products. As shown in the figures below.

2011
04/01
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50th Street Ventilation Facility,New York

Structure and architecture model of 50th Street Ventilation Facility

This project was awarded by Metropolitan Transportation Authority (MTA). It is a new ventilation facility which will be built that will support train operations and passenger spaces that will be located at the new New York LIRR terminal at Grand Central Terminal. Five buildings will be demolished followed by excavation for the ventilation building and shafts and a new reinforced concrete loading dock will be built. 

Combination of structure and architecture model

3D rendering of 50th street ventilation facility

In this project, I helped my supervisor to build an architecture and structure BIM model for this project, which is used for construction simulation and coordination. I  helped my supervisor create families special for this project, like the detail connecting components of beam and column, and some irregular shape components.  Moreover, I checked the models in Naviswork and helped my supervisor modify models.

Models coordination in Naviswork

Mechanical and structure models coordination in Revit

Strcuture details

Louver family created for this project

Curtain panel and wall schedules for manufacturing and construction

Rendering view of irregular shape component families in landscape area

 

2011
02/07
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Conceptual Mass & Sustainable Design

 
Site plan of this project

 It’s a real project in downtown Los Angeles, two mixed use buildings will be designed and built in the red area of the picture. It requires about 150,000 square feet of retail space. Retail on the first floor, maybe second floor. Retail floor-to-floor height is about 14’. Building façade transparency about 25 %. About 500,000 square feet of office space. Office floor-to-floor height is about 14’. Building façade transparency about 50 %. About 120,000 square feet of residential space. Residential should never be under office or retail space. Residential floor-to-floor height is about 10’. Building façade transparency about 75 %. About 20,000 square feet (this number is not absolute – give a good argument for changes) of photovoltaic panels (PV) + adjacent space for installation (about 25%). Direct sunlight is critical. 

Conceptual design models and schedules of room areas

I made a conceptual model in Revit Architecture and then used Solar Radiance   to analyze the solar gains and day lighting of building. According to analyze results optimize the architect design by seeing its environmental impact. In additional it also helped to decided whether to use PV panels to help cut down the energy consumption of building and determine where to put PV panels. And seeing the solar gains of building can help approximately estimating if solar energy can be attribute to this credit.  

Solar radiation study in Solar Radiance Plug-in

Conceptual mass facade design

Design of PV pandels according to Solar Radiation Analyze

Creating PV panel family

Small park or plaza is between the two buildings. Sunshine is important although shade during the summer afternoons is desired. Solar shadows will be studied in Ecotect.

Annual shadow ranges study in Ecotect

Besides that, the conceptual model will be exported to Green Building Studio and Revit MEP to do conceptual energy analysis. Seeing how design changes contribute to building energy savings. In addition, the building water consumptions can be seen in Green Building Studio, which would benefits in making decision of earning Water Efficiency credits.

Conceptual heating and cooling analysis in Revit MEP
2011
02/07
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Work Samples of Class ARCH-507 and ARCH-615:Villa Mairea

  
3D Revit Model of Villa Mairea

 Villa Mairea is a guest-house and rural retreat built by the Finnish architect Alvar Aalto for Harry and Maire Gullichsen in Noormarkku, Finland. In this project, I made a model of Villa Mairea by Revit Architecture, studying how BIM works, how Revit coordinate with other BIM software, and running energy simulation in diferent software. 

3D rendering view of Villa Mairea

Door schedules with graphic legends

Sustainable analysis in different programs

I took the class ARCH-615 which is focusing on energy software and energy calculation.  I used HEED, BEopt, EnergyPro, eQuest, EnergyPlus and Green Building Studio, to analysis the energy efficient and simulate the energy performance of Villa Mairea which is designed by Alvar Aalto; comparing these tools on many different criteria: accuracy, ease of use, availability of necessary information and other standards.

Energy simulation in different energy software

2011
02/07
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Using BIM as a Tool to for LEED Score Calculations

 

Although LEED is a rating system and BIM is an information technology, the advantage of using BIM is that it can be a resource of all project information for team members from the design team, consultants, and facility. It would assist project stakeholders in making decisions for new and existing buildings considering the best value with regard to the applicable green building rating system score.   Using BIM in this approach could allow designers to study alternatives more quickly in going after LEED points, to make timely decisions, to communicate effectively both during design and construction, and when submitting documentation for the LEED worksheets. With better advances in the material libraries and cost estimation, the design team could use the techniques to go beyond the LEED certification system.  

The LEED NC Material Resources Credit 4 was described previously; this credit is about construction materials’ recycled content that requires project use materials with recycled content at least 10% or 20%, based on cost, of the total value of the materials in the project. In LEED, the AEC teams need to document the following information to achieve this credit: Material Name, Manufacturer, Material Cost, Post Consumer Recycled Content, Pre-Consumer Recycled Content, and Recycled Content Information Source. It is possible to add fields for this data as shared parameters inside BIM and give values to these parameters according to manufacturers’ specifications. Then a schedule can be created. Because not all the materials qualify for this credit, different phases should be created and defined for each component and material. After that, a material takeoff schedule can be created by selecting different material categories and phases, and the the material group can be selected that is qualified for the credit. The specific parameters, as required by LEED template, are added to the schedule along with a few simple formulas to calculate the recycled content value.

Recycled Content Value = Percent Postconsumer Recycled Content × Material Cost + 0.5 × Percent Preconsumer Recycled Content × Material Cost

Percentage Recycled Content = Total Recycled Content Value / Total Materials Cost

Besides that, a cut sheet can be created in Revit for each credit. In this cut sheet, designers can add basic description for this credit and the schedules in it. And then save the file contained with these schedules and cut sheets as a template. For every new project, they can use this template to start their design, and use the materials and components from the library they created. With the progress of the model, the schedules will also automatically update. By viewing the cut sheets, designers can easily know the credits and their progresses.

2011
02/07
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