What are the pros and cons of developing a by jaj75621

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									Tom Williams
 Justin Peak
Andrew Brooks
Raymond Luu
Tyler Gerrells
             Future of Masonry
   Only one thing holding
    back AACs from taking
    over the
    market……shipping
   Very easy to gain an
    ability in AACs if the
    market changes
   Bottom line- not very
    much risk associated
    with staying with
    concrete masonry units   http://www.taunton.com/CMS/uploadedImages/Images/Homebuilding/Articles/h00002_04_ld.jpg
What are the pros and cons of developing a capability
          in Autoclaved Aerated Concrete?

~Technological considerations~
     -Pros
             •Lightweight (80% air)
             •Does not shrink, rot, warp, corrode, deteriorate
             •Fire resistant (4 hour UL fire rating)
             •Reduces Sound (ex: freeway wall barriers)

     -Cons

             •Reduced load-bearing capacity
             •Tendency to chip at edges
             •Lack of familiarity
What are the pros and cons of developing a capability
          in Autoclaved Aerated Concrete?

~Human performance considerations~
  -Pros

    •Maintenance free – eliminates needs for repair
    •Termite proof – eliminates needs for pesticides   }
                                                       Lowers Operating
  -Cons                                                     Costs

    •Lack of experienced installers
    What are the pros and cons of developing a
      capability in our emerging systems.
Ecological
   Pros
      -Much easier to recycle
      -For the amount of raw material used, five times the amount of finished
    product is produced
     -increased energy efficiency
   Cons
      -None
Economic
   Pros
      - Less annual maintenance cost
      - Lower insurance cost with natural disaster
   Cons
      - Cost $11.57/SF vs. $8.89/SF
      - Exterior cladding is required
      - Hard to procure, high shipment cost
        Technological Performance
What will our field look like in 5-10 years?
      •Updated specifications and codes

      •New findings for testing and uses of system

      •Possible increase in strength, durability, and thermal
      properties based on new findings

      •New findings could lead to new components

      •Buyer’s Guide should not be affected in 5-10 years

      •FMEA should not be affected also

What should we ultimately be preparing for?
     •Prepare to update specifications and codes

     •Prepare to update testing
              Human Performance
What will our field look like in 5-10 years?
      •New findings/new product info determined

      •Installation process should stay the same, but equipment could
      become more technologically advanced which could speed up
      the process

      •If new technology is invented, there will be a change in crew
      composition as well as a change in time

      •Preventive maintenance and troubleshooting should stay the
      same based on new findings

 What should we ultimately be preparing for?
     •Prepare to learn and teach crews how to use new equipment

     •Determine how many laborers are needed and the changes in crew
     composition based on new equipment
           Ecological Performance
What will our field look like in 5-10 years?

          •New components can be added or altered to enhance the
          performance of either system

          •Certain resources could become scarce after 5-10 years

          •If resources or components are altered it could help or
          hurt the environment


 What should we ultimately be preparing for?

         •Prepare for scarcity of resources by researching in advance and
         determining possible alternate resources.
           Economical Performance
What will our field look like in 5-10 years?

        •Equipment cost would be affected by a change in technology

        •Labor cost would be affected by a change in crew composition
        which is dependent on new equipment

        •Inflation of the economy over time should affect the cost as a
        whole.


 What should we ultimately be preparing for?

       •It would be almost impossible to prepare for changes in cost
                   Final Decision
The emerging system of AAC would be a great choice, but due to
  the lack of availability and the distance from a manufacturing
  plant, we felt the better choice was to stick with the traditional
  system of CMU blocks.




                               http://www.genestconcrete.com/resource/d/35181/CMU.jpg
                               Resources
   http://extension.ucdavis.edu/unit/green_building_and_sustainable_design/pdf/resources/
    auto_aerated_concrete.pdf

								
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