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Wind Slits

Discussion in 'Tips & Tricks' started by K2, Aug 8, 2011.

  1. K2

    K2 Member

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    Need some help! doing a 3'x30' street banner and city regulation says it has to have wind slits but gives no specification on how far apart or how many. I was thinking about every 3' left to right with 2 rows high and staggering the 2 rows. Is this to many or not enough. Any suggestions?
     
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  2. ChicagoGraphics

    ChicagoGraphics Major Contributor

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    Why not just print it on mesh, looks better to then having a banner full of half holes.
     
  3. J Hill Designs

    J Hill Designs Major Contributor

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    I was at costco yesterday and there was a little banner that was probably 12"x30" or something - installed indoors - and it had tiny wind slits in it - I was baffled - wish I had my phone on me
     
  4. HulkSmash

    HulkSmash Major Contributor

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    That will work fine.
     
  5. K2

    K2 Member

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    Arkansas
    Not my regulations. Just going off city form.
     
  6. Merritt Big Color

    Merritt Big Color Merchant Member

    Here you go these are pretty much Federal regulations for street and pole banners.

    Never had one fail and they always look great....
     

    Attached Files:

  7. K2

    K2 Member

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    Nov 3, 2009
    Arkansas
    Thanks Everyone
     
  8. BlueFishDesigns

    BlueFishDesigns Very Active Member

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    :banghead:

    wind slits... grrrr....
     
  9. HulkSmash

    HulkSmash Major Contributor

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    Hey Mike thanks for that documentation.
     
  10. Latigo

    Latigo Member

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    The way to make a wind louvre without worrying about the large banner ripping is to use a round 3/8" diameter hobby soldering iron Put the holes 6 to 10" apart, use a shop knife and start at the bottom center of the first hole, make a downward "D" swoop and end up in the bottom middle of the second hole leaving a "D" shaped hanging flap. The round holes with the edges sealed with the soldering iron stop the banner from tearing. Stagger the "D"s top to bottom.

    We have a banner used by the City of Lakeside thats 10 years old now and it comes in every year for a date change. This banner is a stitched, grommeted, corner reinforced, roped 28 oz, 36" x 60' banner that stretches across main street during the fall celebrations. Still holding up in the worst winds with no tears.
     
  11. Si Allen

    Si Allen Very Active Member

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    What a waste of time and effort to make a perfectly good banner look ugly!

    In that drawing ( 3.5 ft X 30 ft banner ) you are adding 20 6in semi circular cuts that produce just under 2 square feet of open area.

    That is just under 2 % reduction in wind resistance.

    Do you really think that will make a difference in a heavy wind?


    :banghead::banghead::banghead::banghead:
     
  12. Craig Sjoquist

    Craig Sjoquist Major Contributor

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    Agrees Mesh is better these days.
    In defense of wind slits they work, they help banner last IF not put correctly or over long time period or large & more then a few sq. ft.
    ( 6ft by 12 ft banner placed on both sides of back lighted can grommets and screwed in place every 9" ) less then 6 mths still ripped away NO WIND SLITS both sides.
    I have had them last 3 years with still in decent shape.
     
  13. Drip Dry

    Drip Dry Very Active Member

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    Make sure you make the slits so that the cut is on the bottom. If on the top, the holes will be open all the time due to gravity
     
  14. Latigo

    Latigo Member

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    Answwering for my 60'er, I don't know. You'd have to ask the long time users in Lakeside that keep bringing it back year after year, and Lakeside does get strong winds.



     
    Last edited: Sep 2, 2011
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