best type of ballast material for solar PV array?

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  • rollandelliott
    rollandelliott Solar Expert Posts: 834 ✭✭
    #32
    Re: best type of ballast material for solar PV array?

    Attachment not found.

    here is one photo
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  • ggunn
    ggunn Solar Expert Posts: 1,973 ✭✭✭
    #33
    Re: best type of ballast material for solar PV array?
    rollandelliott wrote: »
    Attachment not found.

    here is one photo
    If that is the final configuration, I don't like the way those blocks across the front are sitting. They aren't contributing anywhere near their full weight to ballasting the system; most of their weight is on the lower edge.
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  • inetdog
    inetdog Solar Expert Posts: 3,123 ✭✭✭✭
    #34
    Re: best type of ballast material for solar PV array?
    ggunn wrote: »
    If that is the final configuration, I don't like the way those blocks across the front are sitting. They aren't contributing anywhere near their full weight to ballasting the system; most of their weight is on the lower edge.

    It looks like the ultimate position of the blocks will be resting entirely on the "shelf" built into the front edge of the structure. I think that they are just posing for their picture in this one. :-)
    SMA SB 3000, old BP panels.
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  • niel
    niel Solar Expert Posts: 10,300 ✭✭✭✭
    #35
    Re: best type of ballast material for solar PV array?

    i would not just go with blocks as a slight shift could displace the blocks leaving it prone to go to oz. i am thinking of anchoring to large screws from the framework ends to the screw tops with something like metallic tow line. if not screws then metal poles driven into the ground much like tent stakes, but much stronger.
    just thoughts.
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  • rollandelliott
    rollandelliott Solar Expert Posts: 834 ✭✭
    #36
    Re: best type of ballast material for solar PV array?

    that's not the final position of blocks,
    picture taken during construction.
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