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Bamboo. A green building materials presentation by Hisa Kominami (CDAE170). Bamboos are a diverse and primitive group of perennial plants in the true grass family

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PowerPoint Slideshow about 'Bamboo' - Albert_Lan


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Presentation Transcript
bamboo
Bamboo

A green building materials presentation by Hisa Kominami (CDAE170)

what is bamboo
Bamboos are a diverse and primitive group of perennial plants in the true grass family

They are widely distributed throughout parts of the world, particularly in the Asia-Pacific region

It grows primarily in tropical and subtropical areas but several species grow in temperate areas

There are approximately 2000 species world wide, of which between 50 – 100 are being used by humans

Bamboo species vary in height from 1 ft to over 100 ft tall and have stem diameters ranging from 1 mm to 30 cm

Certain species can grow up to 1 ft/day!!

What is bamboo?
why is bamboo important
Why is Bamboo important?
  • Ecological Role

- Is excellent at sequestering carbon and releasing oxygen (can sequester up to 12 tons of carbon dioxide from the air per hectare and release 35% more oxygenthan equivalent stands of trees)

- Prevents soil erosion and maintains watershed integrity and soil health

- Provides habitats and food for a variety of species (Giant Panda, Mountain Bongo, lesser bamboo bat, etc)

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Why is Bamboo important?

  • Economic Role

- The current estimated trade in bamboo is 5 billion U.S. dollars

- Bamboo related industries provide food, income, and housing to over 2.2 billion people

multipurpose crop for humans
Multipurpose Crop For Humans
  • Fuel
  • Paper
  • Fodder
  • Furniture
  • Food (shoots, wine)
  • Musical Instruments
  • Traditional Chinese Medicine
  • Handicrafts (baskets, jewelry, pens, bicycles, fly rods)
  • Construction (homes, scaffolding, bridges, reinforced concrete, boats, fences)
bamboo in construction
Bamboo in Construction

Five story parking garage at the Leipzig Zoo using bamboo for the building’s envelope

bamboo in construction10
Bamboo in Construction

Bridge by Jorg Stamm

bamboo in construction11
Bamboo in Construction

Bridge by Jorg Stamm

bamboo in construction14
Bamboo in Construction

Octagon Gazebo by Bamboo Technologies of Hawaii

benefits of building with bamboo
Benefits of Building with Bamboo
  • Can be harvested in 3-5 yrs. versus in 10-50 yrs. for softwoods and hardwoods
  • The yield (weight per acreage) for bamboo is 25% greater than that of timber
  • Has a tensile strength that rivals steel (withstands up to 52,000 psi)
  • Has twice the compressive strength of concrete
  • Resistant to earthquake damage and practical on steep slopes
  • Bamboo structures can be built very quickly, are low cost, durable, and environmentally friendly
  • The energy required in processing bamboo is less than for concrete, wood, and steel
benefits of bamboo flooring
Benefits of Bamboo Flooring
  • Is available with formaldehyde free glues and low voc finishes
  • Aesthetically beautiful
  • Is comparable if not stronger than oak in terms of hardness (Janka Ball Test – 1320 PSI)
  • Bamboo exhibits little dimensional change compared to other commonly used woods (2.5x more stable)
potential for sustainability
Potential for Sustainability
  • Renewable– can be harvested without damaging the plant and grows extremely quickly
  • Plentiful– there is great potential for timber-quality bamboo to be produced in the U.S.
  • Local– can be grown locally in a small land area
  • Waste-reducing– sequesters carbon and leaves can be used as fodder or compost
drawbacks of bamboo
Drawbacks of Bamboo
  • Untreated bamboo is susceptible to attack by fungi and insects
  • May or may not be harvested, manufactured, and shipped in an environmentally friendly manner
  • Exclusion from building codes and lack of standards
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