Sustainable Materials

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    Miles Barnard

    I am giving a short lecture at Adkins Arboretum on the Eastern Shore of Maryland on sustainable materials in November. I’m asking for input on materials that you may be using or thinking about using that you feel meet the criteria of ‘sustainable’.  To me sustainable materials would take the following criteria into consideration: recycled content, processing efforts, chemical and residual by-product generation, local or non-local sourcing, environmental impact from harvesting or extracting, etc. The materials that I most use are wood, stone, steel, soil and plants. Any suggestions on alternatives to PVC would also be appreciated.

    I realize that for some, a list of sustainable materials that you specify may feel proprietary. Please do what makes you feel the most comfortable and in doing that consider why you choose to use sustainable materials at all.

     Thanks in advance everyone!


    -Miles Barnard

    Tosh K

    Wood : black locust (US sourced, not the eastern European stuff everyone seems to use), Accoya and other heat/chemical treated wood (some of them are now building US plants); in general lumber that isn’t shipped to Canada to be processed and brought back down; reused timbers

    Stone: local (though often more costly than Chinese, both for transportation impact concern and Asian longhorn beetle import concerns)

    Steel: generally this doesn’t seem to be an issue as US steel is of good quality and competitive priced (as well as recycling when possible – presumably for cost reasons)

    Soil: local, using local compost in lieu of chemical treatment

    Plants: locally grown natives usually hold up better than from long distances or foreign; but where conditions dictate, non-native adapted species often are a better long term solution.  Often try to select for habitat considerations (whether wildlife is desired or best deterred).

    Usually stick to HDPE to avoid chemical reactions with PVC.

    An interesting one is recycled content in concrete, and the impact it has on strength/chemical reactions.

    Miles Barnard

    Tosh thanks for the great info. Hopefully others will reply also.

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