Wow, BigInch, thats quite the reply. Thanks.
djack77494, your reply was more what I was looking for. Thanks. I understand that by throttling the valve we increase the system head and therefor travel left on the pump curve, thus decreasing the pump flow. So now with the flow decreased the...
Im fairly new to designing pipeline systems, so I have a basic question:
Lets say I have a piping system that has 4000' straight pipe equaling 100' head and I have an appropriately sized pump attached to the system. Now, if I put a throttling valve in the middle of that pipeline, can that...
Here is my question:
Can you connect a plate to a beam? Say for instance I have four W 8X24 beams, making up a square. Now I make up a plate (4" thick concrete) using the same four nodes I used for the beams. Can I connect the beams to the edges of the plate so that any forces I place on the...
I finally found the actual ASTM documentation on this.
http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/WITHDRAWN/A212.htm?E+mystore
This states that A212 was replaced with A515, just as you all told me. Thanks!
well, we are just enlarging two manholes on it. So, for my Compress model I need to input a material for the shell and obviously A212B is not a choice.
I need to recertify a pressure vessel from the 50s, and the material of the shell is A212B. This material is not used anymore. Does anyone know of an equivalent to this material?
Does anyone know the dimensions of a W6X13.5? Its a member in a roof truss in a really old building Im doing work on. I can't find it in the 7th, 8th or 9th editions of the AISC. Thanks in advance for any help you can provide.
Thanks for the responses. I actually was able to figure out the solution to my problem. It was more difficult than I thought it would be. But I found a section in my Heat Transfer textbook called Laminar Free Convection on a Vertical Surface, and there were some graphs and formulas for...
This should be real easy, but I am reading my old heat transfer book and I can't figure it out.
I know the temp of one side of a steel plate. What is the equation to find out the temp of the other side of the steel plate, and then temperatures at given distances away from the plate. I know...
ARTISI,
Thanks for your help! Your explaination is perfect. I also found some more information that supports what you said and it makes sense to me now. If you have an impeller that sticks 10 feet under the surface of the water, the higher pressure down there actually improves your...
Thanks for the quick response. I did search on here for about 15 minutes and didn't find the answer to my question. If anyone could point me to a thread that discusses this I would appreciate it.
Before a week ago I had no idea what NPSH was. We didn't cover it in Fluid Mechanics in school (Im a recent ME grad) and I had never worked with pumps before. So I am just now learning about pumps and NPSH. I am comfertable calculating NPSHa for centrifugal pumps but I am confused about...
