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Thread: TBH question

  1. #1
    Join Date
    Feb 2013
    Location
    southwest colorado
    Posts
    137

    Default TBH question

    Why are the sides of a TBH angled? Does it promote better comb or something?

  2. #2
    Join Date
    Jan 2013
    Location
    Midland, MI
    Posts
    577

    Default Re: TBH question

    the plans vary a bit depending on which directions you follow, but it seems like most of them have 75deg angles at the top and 105deg angles at the bottom. As for why these angles are chosen, i have no idea, other than it seems to generally correlate with the way bees naturally draw comb, and is easy to fabricate.

  3. #3
    Join Date
    Nov 2011
    Location
    Rader, Greene County, Tennessee, USA
    Posts
    6,072

    Default Re: TBH question

    Well, not all TBHs have angled sides. TBHs with vertical sides are sometimes called Tanzanian Top Bars Hives (TTBH).
    http://www.bushfarms.com/beestopbarhives.htm#ttbh

    Note that a TTBH with dimensions sized to fit Lang frames may be just called a horizontal hive:
    http://www.bushfarms.com/beeshorizontalhives.htm
    Such a hive can have either top bars or frames, or perhaps even both at the same time.
    Graham
    USDA Zone 7A Elevation 1400 ft

  4. #4
    Join Date
    Aug 2002
    Location
    Nehawka, Nebraska USA
    Posts
    46,102

    Default Re: TBH question

    >Why are the sides of a TBH angled?

    As Rader said, they don't all have angled sides. A KTBH does. A TTBH does not. The differences are not very significant, but I think the comb is slightly stronger with less weight/attachment on the KTBH. The comb comes out of the box easier because of the angle as this causes the gap between the comb and the side to rapidly increase as you remove it. The THEORY of why the sides are sloped is to decrease attachments on the side. I see no significant difference on that account.
    Michael Bush bushfarms.com/bees.htm "Everything works if you let it." ThePracticalBeekeeper.com 40y 200h 37yTF

  5. #5
    Join Date
    Apr 2013
    Location
    Raleigh, NC, USA
    Posts
    47

    Default Re: TBH question

    It keeps the bees from attaching the comb to the side of hive. Evidently if it's more square they will tend to attach the comb to the wall for support. With slanted sides the honeycomb is more triangular and needs less support.

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