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kayems
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Join Date: Jun 2008
Posts: 24

Floor Load Bearing Capacity

03/27/2009 12:23 AM

Friends,

I am not in this field but have to evaluate the floor strength of a industrial shop floor. The existing floor spec. given is reinforced cement concrete of 100mm thick and reinforced with T10 at 250mm c/c bothways.design live load is 3kN/m^2.

Our requirements where all given in Ton/m^2. Max. requirement is 7ton/m^2.

how to correlate kN/m^2 and Ton/m^2?

Thanks in advance,

kayems
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MUDS
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Join Date: Mar 2009
Posts: 2
#1

Re: floor load bearing capacity

03/27/2009 5:12 AM

to Change KN/m^2 to Ton/m^2, divide by 10.

Cheers,

Muds
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RCE
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Join Date: Dec 2007
Location: California
Posts: 2363
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#2
In reply to #1

Re: floor load bearing capacity

03/27/2009 2:59 PM

You should take care in doing this, as most jurisdictions require such evaluations of loading capacities be stamped by a licensed Civil Engineer.
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MarkTheHandyman
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#3

Re: Floor Load Bearing Capacity

03/28/2009 5:50 AM

Hi, kayems!

Wikipedia gives the conversion table with an answer to 5 or 6 decimal places:

http://www.ask.com/bar?q=How+many+kN+in+a+Tonne%3F&page=1&qsrc=2417&ab=1&u=http%3A%2F%2Fwiki.answers.com%2FQ%2FHow_many_kilonewton_in_a_tonne

Mark
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Toomuchfun
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#4

Re: Floor Load Bearing Capacity

03/28/2009 12:34 PM

You provide so little information that no one can offer anything useful or reliable as an answer to your question. Ex; is this concrete floor on a compacted fill or it is it constructed so as to be elevated above the ground or even other floors. Is this a floor that is supported by steel girders, or concrete beams and columns, is it a loading dock, or some other high traffic area, or is it just to support dead loads like steel frames that will be loaded with palletized materials. If you knew what you were doing you would see that you must provide a lot of information regarding the end use of this example.

THEREFORE; I determine that this must be just another homework question that you are too lazy to look for the answers for your self. I suggest that you copy a friends answers, and take a chance that he wasn't as lazy as you, or had a better source for getting answers the easy way. You may get a passing grade and ultimately really become an Engineer, but you will not be a very well educated one.

TooMuchFun

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MarkTheHandyman
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#5
In reply to #4

Re: Floor Load Bearing Capacity

03/28/2009 1:17 PM

Hi, Toomuchfun!

I didn't see where the OP was asking us to do anything other than convert kN to Tonne so he could do a simple subtraction question.

My guess is that he probably even already had found the answer for himself before anyone in here gave it to him, and was just looking for something quick while he was on line and thinking about it.

I could be wrong. If I am, kayems, you should be asking your questions in the education section where people are willing to help students with their questions. Can you give us an answer to this? Engineering student or engineer?

Mark
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Toomuchfun
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#7
In reply to #5

Re: Floor Load Bearing Capacity

03/30/2009 11:00 AM

My time is valuable to me, but not so valuable that I would not expend a little of it attempting to answer someones questions. However in order to provide an answer to a question, one must first be able to understand the question being asked.

"There is no such thing as a stupid question"! But there are stupid people, and your aggressive remark indicates to me that you and Kayems may be two of them! At any rate it is obvious to me that the thread poster was not interested in an intellegent answer and neither are you, so "I am moving on"

TMF

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MarkTheHandyman
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#8
In reply to #7

Re: Floor Load Bearing Capacity

03/30/2009 9:58 PM

Hi, Toomuchfun!

"your aggressive remark indicates to me that you and Kayems may be two of them!"

Aggressive? Nope. Dunno where you saw aggressive in #5. Sorry you took it that way, though.

Admit to being stupid from time to time, but only in the original sense of the word, which means 'unaware'. And in the case of the original question, I think I answered it straight up. So nope, not stupid this time around on either count (aggressive or missing the question.) Mind you, Kayems (I think it was he) mentioned in a later entry that the question I answered was perhaps not the question he had intended to ask. And he didn't answer my question as to whether he was a student or a practicing engineer either. Guess we'll just have to guess.

Mark
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kayems
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#9
In reply to #8

Re: Floor Load Bearing Capacity

03/30/2009 11:44 PM

mark,

indeed i am a practicing engineer but in a different field as i mentioned in the op. first of all I apologize for my response which could have hurt you and tmf. I understood the stupidity in my question only later but got bit emotional seeing tmf response with all his imaginations. I respect tmf for all his knowledge and infact remember a instant where he asked for time to reply for a post. I had even gone thru your and tmf's long replies.

just forget this and move on(as tmf mentioned), young engineers need guidance from experienced guys like you.

no more hatred

with respect

kayems
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Toomuchfun
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#10
In reply to #9

Re: Floor Load Bearing Capacity

03/31/2009 12:27 AM

I am not a practicing Engineer Kayems, however I was the Contractor who needed to comprehend what the Engineers wanted when they specified certain performances from the concrete they specified. Unfortunately, the Engineers called out specifications right out of the books with out understanding what was necessary to get the material in place.

With this comment I am reminded of a project that I was doing that called for specially engineered and blended concrete that was being placed as a ramp at a municipal air port. The Engineer called for concrete not to exceed a 1" slump. The Engineer was on site for the placement. To his dismay he found that the concrete was to stiff to even get it out of the truck in the time allocated for the placement of that 9 cu yd load. Two more loads were sent back as they were getting to hot to even place. HE PAID FOR THOSE LOADS. I advised him to permit water to be added to loosen up said concrete to a 3" slump, he agreed and the placement was continuing well until the placement subcontractor convinced the Engineer to allow for a 4" slump, "over my objections".

When the placement subcontractor realized that the concrete was now so loose that his crew was having to pull it back to the power screed and doing much extra work he now asked the Engineer to go back to the 3" slump.

The real problem with this 4" slump concrete showed up when the concrete cured. The added water was enough that it surfaced and where the water lays on top of a concrete slab, there will always be a sink on the surface.

Therefore, If you want to know about concrete, ask the person who will ultimately be responsible for the finnished work.

TooMuchFun

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kayems
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#11
In reply to #10

Re: Floor Load Bearing Capacity

03/31/2009 5:23 AM

thank you for your kindness...
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MarkTheHandyman
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Canada - Member - Toronto, Ontario (South Parkdale On The Lakeshore) Engineering Fields - Marine Engineering - Great Lakes School Of Marine Technology (Owen Sound and Port Colbourne) Technical Fields - Architecture - Private Practice 1976-1990 Technical Fields - Education - Toronto Teachers' College 1971 Technical Fields - Marketing/Advertising - Founding Member Hobbies - Hunting - Founding Member Hobbies - Target Shooting - Founding Member

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#12
In reply to #9

Re: Floor Load Bearing Capacity

03/31/2009 1:21 PM

Hi, kayems!

Boy oh boy! If you can read through my great long answers in here, you are tough!

Mark
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kayems
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Posts: 24
#13
In reply to #12

Re: Floor Load Bearing Capacity

04/01/2009 11:24 PM

huh!

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MarkTheHandyman
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Canada - Member - Toronto, Ontario (South Parkdale On The Lakeshore) Engineering Fields - Marine Engineering - Great Lakes School Of Marine Technology (Owen Sound and Port Colbourne) Technical Fields - Architecture - Private Practice 1976-1990 Technical Fields - Education - Toronto Teachers' College 1971 Technical Fields - Marketing/Advertising - Founding Member Hobbies - Hunting - Founding Member Hobbies - Target Shooting - Founding Member

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#14
In reply to #13

Re: Floor Load Bearing Capacity

04/02/2009 9:32 AM

Hi, kayems!

OK, OK, you're tough.

Mark
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Anonymous Poster
#6
In reply to #4

Re: Floor Load Bearing Capacity

03/29/2009 12:16 PM

toomuchfun,

now i know how you get too_much_fun - BY DEGRADING OTHERS AND HURTING THEIR FEELINGS.

(intend of the question is not just conversion but was put it in a wrong way)

sorry for wasting your valuable time.

and thanks for the decent minded people who ignored this silly question and double thanks to the ones who has responded positively to this dumb question.

bye,

kayems
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Users who posted comments:

Anonymous Poster (1); kayems (3); MarkTheHandyman (5); MUDS (1); RCE (1); Toomuchfun (3)

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