base

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base

Post by bluefire » October 23rd, 2010, 8:43 am

me and my partner were wondering what size we should make the base of our tower?

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Re: base

Post by lllazar » October 23rd, 2010, 8:51 am

Well, the rules say that the base must span a 20x20 cm square, but this doesn't mean the base has to be 20x20 cm. For example, you could make it 16x16 and just position is so that the corners are on the platform, thus spanning the base.

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Re: base

Post by bluefire » October 23rd, 2010, 11:26 am

i still don't understand what the rules mean by spanning a 20cm by 20cm opening . if the base was 16cm by 16cm, then wouldn't the tower just fall through the hole :?:

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Re: base

Post by nejanimb » October 23rd, 2010, 11:43 am

It means exactly that: There is a square hole, 20cm by 20cm, cut into the testing platform. There are an infinite number of base sizes that can span that gap. You can have a rectangular base that is 20.2cm by 3cm, or you can have a square base that's 16cm by 16cm, or you can have a triangular base. Anything that supports your tower on the testing platform and suspends the loading block over the center of the square opening.
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Re: base

Post by lllazar » October 23rd, 2010, 4:34 pm

But if you think about it in a physics sense - you wan't the legs of the base to be as vertical as possible.
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Re: base

Post by Bubba1960 » October 24th, 2010, 9:16 am

You can do a 16 X 16 cm base and rotate it 45 degrees.
Last edited by Bubba1960 on October 24th, 2010, 1:15 pm, edited 1 time in total.
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Re: base

Post by blue cobra » October 24th, 2010, 1:09 pm

Bubba1960 wrote:You can do a 16 X 16 cm base and rotate it 45 degrees.
Big difference.
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Re: base

Post by Bubba1960 » October 24th, 2010, 1:15 pm

I ment cm
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Re: base

Post by disownedpear » October 30th, 2010, 10:28 am

if you use a 16cm by 16cm base it makes the tower lighter than using a 20cm by 20cm
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Re: base

Post by lllazar » October 30th, 2010, 3:40 pm

Uhh...is that a question? Then yes
:|

I was wondering - since the base legs take more force, would it be a good idea to make them large than the columns in the upper portion of the tower - say, 3/16 in^2?
2011 Season Events~

Fossils (Regionals ~1st) (State ~6th)
Towers (Regionals ~1st) (State ~3rd)
Helicopter (Regionals -3rd gahhh) (State ~5th)
Wind Power (Regionals ~1st) (State ~3rd TIERED!)

Hooray for getting everything i wanted?

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