## "no portion may extend below the top surface"

HeatherFeather
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### "no portion may extend below the top surface"

Does ""no portion may extend below the top surface" mean the entire thing can lay on the top surface? If so, the bridge does not need to span 35cm or 45cm, it only needs to span the 20cm hole where the bucket hands through... Are we reading this wrong?

John Richardsim
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### Re: "no portion may extend below the top surface"

The bridge will still have to span the 35/45 cm distance. Essentially, no part of your device may be in or below the hole; all of you device must be on or above the plane of the testing surface. Does that answer your question?
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HeatherFeather
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### Re: "no portion may extend below the top surface"

I guess what I am asking is what is the difference between the elevated bridge, and what they have this year? What is the "clear span"? Where is the bridge allowed to touch the test base? 3e states "no portion may extend below the top surface of the test supports PRIOR to testing - but it does not say anything about how much it can sag during testing. There is no info -
http://soinc.org/bridge_building_b

Does anyone have a link of a diagram with dimensions of the test base?

bernard
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### Re: "no portion may extend below the top surface"

The bridge must span an opening of 35.0 cm (Div. B) or 45.0 cm (Div. C). The bridge need not be elevated, so it could be flat, if desired.
The test base must have an opening of 20.0 cm by 20.0 cm for the loading block assembly to hang throught. The blocks described in 4. b. i. are used to raise the bridge and are separated by at least 35.0 or 45.0 cm.
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chinesesushi
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### Re: "no portion may extend below the top surface"

HeatherFeather wrote:I guess what I am asking is what is the difference between the elevated bridge, and what they have this year? What is the "clear span"? Where is the bridge allowed to touch the test base? 3e states "no portion may extend below the top surface of the test supports PRIOR to testing - but it does not say anything about how much it can sag during testing. There is no info -
http://soinc.org/bridge_building_b

Does anyone have a link of a diagram with dimensions of the test base?

The difference with elevated bridge is that nothing has to go under the bridge, unlike the 15 cm height requirement in 2010 where something 15 cm has to pass under the bridge. Clear span is just lines that indicated intervals of measurement I believe. Bearing zone are lines that are beyond the limit of 35 cm for div b or 45 cm for div c. 4b mentions Test supports, on which the bridge is placed as indicated in 5e. 5j states that if your bridge touches the test base, then it counts as failure. So that's the limit on how much it can sag.
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jander14indoor
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### Re: "no portion may extend below the top surface"

For the new members to the board, let me throw out a warning. While Scioly is a WONDERFUL site for information on how to do better in Science Olympiad, the one thing it is not is OFFICIAL. While you can get learned OPINIONS on the rules here, the ONLY source of official rules clarifications is the National SO website www.soinc.org. Remember to read all posts with that in mind.

Regards,

Jeff Anderson
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chinesesushi
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### Re: "no portion may extend below the top surface"

jander14indoor wrote:For the new members to the board, let me throw out a warning. While Scioly is a WONDERFUL site for information on how to do better in Science Olympiad, the one thing it is not is OFFICIAL. While you can get learned OPINIONS on the rules here, the ONLY source of official rules clarifications is the National SO website http://www.soinc.org. Remember to read all posts with that in mind.

Regards,

Jeff Anderson
Livonia, MI

Yes yes of course . His/her question was more of a "in the rules" question, so I answered it XD.
Never argue with an idiot, they will drag you down to their level and then beat you with experience.
Before you criticize a man, walk a mile in his shoes. That way you'll be a mile away and he'll be shoeless.
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jander14indoor
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### Re: "no portion may extend below the top surface"

No issue with what you said, like I said, good learned comments are found on this site, just wanted to war the original poster who appears to be new to site.

T-B
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### Re: "no portion may extend below the top surface"

Has anyone submitted an official clarification request on this issue? Based on our reading, we think 4(e) -- No portion of the bridge may extend below the top surface of the test supports prior to testing -- means that you must build a through bridge rather than an upside-down deck bridge. Is that what everyone else is thinking?

retired1
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### Re: "no portion may extend below the top surface"

That rule does not need clarification. It plainly states that NO portion can extend below the blocks that it sets on. No means nothing or zero portion of the structure.

chinesesushi
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### Re: "no portion may extend below the top surface"

retired1 wrote:That rule does not need clarification. It plainly states that NO portion can extend below the blocks that it sets on. No means nothing or zero portion of the structure.

This. I don't understand where all the confusion is coming from.
1. At start, no part of the bridge may be below the test supports.
2. During testing, the bridge is allowed to extend under the test supports.
3. If, during testing, any part of the bridge touches the test base, this is counted as failure and loading must not continue.

Quite simple really.
Never argue with an idiot, they will drag you down to their level and then beat you with experience.
Before you criticize a man, walk a mile in his shoes. That way you'll be a mile away and he'll be shoeless.
You should only create problems, that only you know solutions to.

royT
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### Re: "no portion may extend below the top surface"

In the statement 'no portion of the bridge may extend below the top surface of the test supports' does the loading block count as part of the bridge, meaning can the loading block extend below the top surface of the test supports? or can the eyebolt extend below the top surface of the test supports?

bernard
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### Re: "no portion may extend below the top surface"

royT wrote:In the statement 'no portion of the bridge may extend below the top surface of the test supports' does the loading block count as part of the bridge, meaning can the loading block extend below the top surface of the test supports? or can the eyebolt extend below the top surface of the test supports?

I would consider the loading block as part of the testing apparatus and not the bridge, so the eyebolt can extend below the top surface of the test supports. Also, bridge seems like it refers to the wooden structure you bring to the competition, which wouldn't include the loading block which should be provided by the event supervisor.

As always, Scioly.org is not the place for official FAQs. Official FAQs are only on the official Science Olympiad website here, where you can submit your own questions.
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royT
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### Re: "no portion may extend below the top surface"

thank you Bernard