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  #1  
Old 06-30-2007, 07:31 PM
Tantarado
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Default Kn/m2 to Kpa

Hi guys,

Just like to know the proper procedure in converting the following:
1. kg/m3 to kg/m2
(unit weight of concrete devide by nominal thickness of concrete
i.e. 2,400 kg/m3 / 0.09318m = 25,756.6 kg/m2, is this correct?)

2. kn/m2 to lbs/in2

3. lbs/in2 to Kpa

Thanks in advance to those that will be helpin' me out on this.
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  #2  
Old 06-30-2007, 11:09 PM
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Robert Fogt Robert Fogt is offline
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Default Re: Kn/m2 to Kpa

Quote:
Originally Posted by Tantarado
1. kg/m3 to kg/m2
You multiply by meters, not divide.
kg/m * m = kg/m

Quote:
Originally Posted by Tantarado
2. kn/m2 to lbs/in2
kn/m * 0.14503774 = lbf/in

Quote:
Originally Posted by Tantarado
3. lbs/in2 to Kpa
lbf/in * 6.8947573 = kPa

A kilopascal (kPa) is the same as a kilonewton/square meter (kn/m). so number 2 and 3 are very much related.
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  #3  
Old 07-01-2007, 01:17 AM
Tantarado
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Default Re: Kn/m2 to Kpa

Quote:
Originally Posted by Robert Fogt
You multiply by meters, not divide.
kg/m * m = kg/m



kn/m * 0.14503774 = lbf/in



lbf/in * 6.8947573 = kPa

A kilopascal (kPa) is the same as a kilonewton/square meter (kn/m). so number 2 and 3 are very much related.

Thank you for the prompt reply this has been a very big help!
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  #4  
Old 07-01-2007, 01:38 AM
Tantarado
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Default Re: Kn/m2 to Kpa

just like to add-up

Is kg/m3 * m3 = kg/m3? i forgot to list it in my previous querry.

i.e. unit weight of concrete multiplied by the calculated volume - will the product be still kg/m3?

Again, Thanks in advance for the replies.
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  #5  
Old 07-01-2007, 11:00 AM
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Robert Fogt Robert Fogt is offline
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Default Re: Kn/m2 to Kpa

No, it would be:

kg/m * m = kg

Its just regular algebra, the m cancels each other out.

What you have is the volume, multiplied by the density, gives you the weight.
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  #6  
Old 09-24-2007, 05:22 PM
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Default Re: Kn/m2 to Kpa

how many lbs would 250kpa be
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