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Diversity is" Our" Strength
"basskisser" wrote in message ups.com... Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: Reginald P. Smithers III wrote: Show me that concrete mix design that has 2500# of Portland cement in it, and weighs better than two tons, and we'll go from there. ps When I said Portland Cement weighed approx. 2500 lbs, I was referring to Portland Cement, I never said or hinted that one would put 2500 lbs of Portland Cement into a yard of concrete mix. Have you looked over your concrete mixes to see that it is very common for a yard of concrete to weigh approx. 4000 lbs? One would not expect a PE to make sure a mistake. No, it is not. Need proof? And if I show proof, will you admit your mistakes? And where is that 2500 pounds of Portland cement per yard used? Please show some criteria for your two tons, and your 2500 pounds of Portland. I tried to be helpful and show you many links showing you the exact weight of concrete, and the exact weight of Portland Cement, you prefer to ignore them. I didn't want you to continue with your silliness, but I should have known better. The question wasn't "is all concrete 4000 lbs per year", because there are light weight concrete mixes that weigh less, but as Bill said, concrete can and does weigh approx. 4000 lbs. The fact that you fail to see this, does understand why you are not employed. No, you are wrong. Bill actually said that concrete weighs 5000#. Please show what facts you have that I am not employed, first. Now, where WERE those links that you shown that states that there is 2500# of Portland cement in a yard of concrete? You DO know, seeing how you are acting the expert here, that in reality, there's somewhere around 5 bags @ 94 pounds in a typical 3,000 psi mix, for a total of 470# don't you? So, I'd really, really like to see this mix design that uses 2500#, because with a water/cement ratio of .53 maximum, you'd have approx. 1,325 pounds of water. But you know this, right? Now, here's the thing. a yard of concrete is an AREA. This 2500# of cement takes approx. 12.72 cubic feet of area. The water that we need per ACI 307 would take an area of approx. 20.64 cubic feet, for a total of 33.36 cubic feet. You're now at more than a yard before you add in the largest volumes, which are the coarse and fine aggregates, with proper gradation of course. So, for an F'c of 3000 psi, the aggregate total is going to be close to approx. 10 or 12 times the amount of concrete. So now you have a "yard" of concrete that is 400 or so cubic feet! So, I'm really confused. Please show me where you are correct, and I am wrong. Now remember something about that 4,000 pounds you are referring to. There is a factor of safety involved for that number. A cubic foot of normal weight concrete doesn't weigh 150 pounds, although that number is thrown around alot. The actual weight of normal weight concrete is around 125 pounds per cubic foot, or 3375 a yard. If you'll look at ACI guidelines you'll even see that there criteria uses 125# per cubic foot dead load for elevated slabs! And even THAT has a factor of safety. Do you understand English? Yes, I do. So, show me how you can get 2500# of portland cement into a yard of concrete using the criteria set forth by A.C.I. 307, A.C.I. 301, and A.C.I. 318. Do you also want me to post some design mixes here showing that I'm right and you are wrong about the weight of concrete? Also, do you want to show me how you get 150# per cubic foot, when, following guidlines by ANY applicable code in the U.S., and ACI, and even Factory Mutual, you only need to design a structure to resist 125# per cubic foot? Please go back and reread this thread before you respond. You might be able to understand the words if you read them a 2nd time. I want YOU to tell me, in YOUR WORDS, how applicable codes, all ACI publications that deal in the subject, Factory Mutual, as well as the Steel Deck Institute, etc. all allow you to design elevated structures that will resist the forces of concrete floors at #125 per cubic foot, which equates to #3375 per yard. All of these use a factor of safety, also. SO, how is it safe to do that, if concrete weighs #150 per cubic foot, as you say? Tell me. If you go back through the thread you will see that concrete's weight can vary based upon the aggregate used. I am surprised that a PE does not understand that. Now if you go back to the beginning of this thread and read it very slowly you will have all of your questions answered. They are all answered already. I never ever said that a yard of concrete's weight doesn't vary. BUT, you've stated that it's at 2 tons, that is wrong. I want YOU to tell me how someone can, by all applicable codes, case studies, etc. be able to design for concrete structures at 125# per cubic foot, when you say that concrete weighs 150#. Also post any binding data that you have that concrete weighs 150# pcf. http://www.cement.org/tech/faq_unit_weights.asp "Concrete: Concrete is a mixture of cement, coarse and fine aggregates, water, and sometimes supplementary cementing materials and/or chemical admixtures. A normal weight concrete weighs approximately 2400 kg/m3 (145 lbs/ft3). The unit weight (density) of concrete varies, depending on the amount and density of the aggregate, the amount of air that is entrapped or purposely entrained, and the water and cement contents, which in turn are influenced by the maximum size of the aggregate." Is that binding enough? And let's not quibble about 5 lbs/ft^3 |
Diversity is" Our" Strength
On Fri, 19 Jan 2007 09:18:40 -0500, "D.Duck" wrote:
"basskisser" wrote in message oups.com... Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: Reginald P. Smithers III wrote: Show me that concrete mix design that has 2500# of Portland cement in it, and weighs better than two tons, and we'll go from there. Snipped This thread was getting way too heavy. -- ***** Have a super day! ***** John H |
Diversity is" Our" Strength
"Short Wave Sportfishing" wrote in message ... On Fri, 19 Jan 2007 03:50:34 GMT, "Calif Bill" wrote: "Short Wave Sportfishing" wrote in message . .. On Thu, 18 Jan 2007 20:47:31 -0500, "D.Duck" wrote: Now are those per yard numbers quoted as square yards or cubic yards? 8) Cubits per furlong. This is not a horse group, it is a boating group, so it is Cubits per Fathom. Cubits per fathom furlong. Sea horses? |
Diversity is" Our" Strength
Reginald P. Smithers III wrote:
basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: Reginald P. Smithers III wrote: Show me that concrete mix design that has 2500# of Portland cement in it, and weighs better than two tons, and we'll go from there. ps When I said Portland Cement weighed approx. 2500 lbs, I was referring to Portland Cement, I never said or hinted that one would put 2500 lbs of Portland Cement into a yard of concrete mix. Have you looked over your concrete mixes to see that it is very common for a yard of concrete to weigh approx. 4000 lbs? One would not expect a PE to make sure a mistake. No, it is not. Need proof? And if I show proof, will you admit your mistakes? And where is that 2500 pounds of Portland cement per yard used? Please show some criteria for your two tons, and your 2500 pounds of Portland. I tried to be helpful and show you many links showing you the exact weight of concrete, and the exact weight of Portland Cement, you prefer to ignore them. I didn't want you to continue with your silliness, but I should have known better. The question wasn't "is all concrete 4000 lbs per year", because there are light weight concrete mixes that weigh less, but as Bill said, concrete can and does weigh approx. 4000 lbs. The fact that you fail to see this, does understand why you are not employed. No, you are wrong. Bill actually said that concrete weighs 5000#. Please show what facts you have that I am not employed, first. Now, where WERE those links that you shown that states that there is 2500# of Portland cement in a yard of concrete? You DO know, seeing how you are acting the expert here, that in reality, there's somewhere around 5 bags @ 94 pounds in a typical 3,000 psi mix, for a total of 470# don't you? So, I'd really, really like to see this mix design that uses 2500#, because with a water/cement ratio of .53 maximum, you'd have approx. 1,325 pounds of water. But you know this, right? Now, here's the thing. a yard of concrete is an AREA. This 2500# of cement takes approx. 12.72 cubic feet of area. The water that we need per ACI 307 would take an area of approx. 20.64 cubic feet, for a total of 33.36 cubic feet. You're now at more than a yard before you add in the largest volumes, which are the coarse and fine aggregates, with proper gradation of course. So, for an F'c of 3000 psi, the aggregate total is going to be close to approx. 10 or 12 times the amount of concrete. So now you have a "yard" of concrete that is 400 or so cubic feet! So, I'm really confused. Please show me where you are correct, and I am wrong. Now remember something about that 4,000 pounds you are referring to. There is a factor of safety involved for that number. A cubic foot of normal weight concrete doesn't weigh 150 pounds, although that number is thrown around alot. The actual weight of normal weight concrete is around 125 pounds per cubic foot, or 3375 a yard. If you'll look at ACI guidelines you'll even see that there criteria uses 125# per cubic foot dead load for elevated slabs! And even THAT has a factor of safety. Do you understand English? Yes, I do. So, show me how you can get 2500# of portland cement into a yard of concrete using the criteria set forth by A.C.I. 307, A.C.I. 301, and A.C.I. 318. Do you also want me to post some design mixes here showing that I'm right and you are wrong about the weight of concrete? Also, do you want to show me how you get 150# per cubic foot, when, following guidlines by ANY applicable code in the U.S., and ACI, and even Factory Mutual, you only need to design a structure to resist 125# per cubic foot? Please go back and reread this thread before you respond. You might be able to understand the words if you read them a 2nd time. I want YOU to tell me, in YOUR WORDS, how applicable codes, all ACI publications that deal in the subject, Factory Mutual, as well as the Steel Deck Institute, etc. all allow you to design elevated structures that will resist the forces of concrete floors at #125 per cubic foot, which equates to #3375 per yard. All of these use a factor of safety, also. SO, how is it safe to do that, if concrete weighs #150 per cubic foot, as you say? Tell me. If you go back through the thread you will see that concrete's weight can vary based upon the aggregate used. I am surprised that a PE does not understand that. Now if you go back to the beginning of this thread and read it very slowly you will have all of your questions answered. They are all answered already. I never ever said that a yard of concrete's weight doesn't vary. BUT, you've stated that it's at 2 tons, that is wrong. I want YOU to tell me how someone can, by all applicable codes, case studies, etc. be able to design for concrete structures at 125# per cubic foot, when you say that concrete weighs 150#. Also post any binding data that you have that concrete weighs 150# pcf. Please try reading this thread. Funny thing how even lab tests result in normal weight concrete at a weight kevin claims it can't be. The whole world is wrong except for the wannabe engineer from Atlanta. LMAO http://www.virginiadot.org/vtrc/main...pdf/06-r12.pdf Table #5 Noraml weight concrete unit weight was 145.2 lb/ft 3 |
Diversity is" Our" Strength
Reginald P. Smithers III wrote:
Calif Bill wrote: "basskisser" wrote in message ups.com... Reginald P. Smithers III wrote: basskisser wrote: Reginald P. Smithers III wrote: basskisser wrote: Short Wave Sportfishing wrote: On 17 Jan 2007 08:59:54 -0800, "basskisser" wrote: Tom Francis wrote: On Wed, 17 Jan 2007 14:13:13 GMT, "JoeSpareBedroom" wrote: wrote in message ... A mongrel political state is doomed to perpetual disorder. Max Tell me about the first of your ancestors who came here. Where were they from? What countries? I have direct Native American ancestors on both sides of my family, one within two generations. Which legally allows me to claim Native American status. So with that in mind... EVERYBODY GET THE HELL OUT OF MY COUNTRY!!!!! So you're 100% Native American? Didn't say that - I said legally claim Native American as my ethnic choice. I suppose, although I've never looked into it, that I could also claim Hispanic also as one of the Grandmothers is Mexican. Are you really saying that if anyone states that they have any Native American blood in them at all, that they can claim that status? Where ARE we going to put those millions upon millions of casinos? And where did those Native Americans come from? Mars. Typical....... lol, the Indian casinos can only be placed on Indian reservations. Even if you are 100% Native American, you can not open a casino off of the reservation. Do you try to be so humorous or does it just come naturally. Show me that concrete mix design that has 2500# of Portland cement in it, and weighs better than two tons, and we'll go from there...... Now, that's why I asked where are we going to put those casinos. There is only so much reservation land. And I'm sure that all of us that have any tiny bit of Native American blood in us would like to open one up! I sure would! I guess, seeing how I have just a trace of N.A. blood in me, I'll go to Cherokee, NC and join that nation. LOL, The Cherokee Nation owns the reservation and they run the casino, it is not up to each Native American to deciede if he wants to open a casino. Have you still not figured that a yard of concrete can weigh over 4000lbs? I know the FACTS about concrete. Do you need me to cut and paste some mix designs for you to prove that a yard of concrete almost never weighs two tons? Now, what about that 2500# of Portland cement in a yard of concrete? Please provide some data to show this. Now, as part OF the Cherokee nation, each individual has a say in it's enterprises. But, you are forgetting the gist of the message here. Just because someone has any little tiny bit of N.A. blood in them, doesn't make them instantly able to be a part of such. Read it again. He said Portland Cement weighs 2500# a yard. And to be considered a Native American for a lot of fishing rights you have to be 1/32. To be in on a casino you have be a member of the tribe. There have been some real battles where part of a tribe decertified another part. I really do not believe he can read or understand English. What is scary is if he has anything to do with designing structures when he cannot grasp a simple fact like the weight of concrete. |
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