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CR4: The Engineer's Place for Discussion & New
 
 
 
CR4: The Engineer's Place for Discussion & New
Conference Room 4 (CR4) is a forum for engineers, scientists and technical researchers to discuss engineering news, seek technical help and get answers to burning questions.
Language: English
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Articles
Urgent Opportunity:: Need Senior Mechnical Engineer, Pro/E
2010-02-23 17:34:33
Thank you for reading this post, I hope that you will pass it on to anyone in your community who would be a good match. We are looking for a Senior Mechanical engineer who has led teams and loves complex Mechanical Design. This is a full time/permanent position located in the San Francisco a...
 
Black History Month Famous People
2010-02-23 17:18:25
I signed up to be emailed each day a new scientist, engineer, or inventor was added to the list for Black History Month. I have only recieved one or two. Is there a link to a list of all the posts that have been made? Thanks Ray Jenkins...
 
1998 dodge ram 2500 electrical problem
2010-02-23 16:58:39
1998 dodge ram 2500 cummins batteries will drain shortly after starting truck, juss replaced alternator and both batteries....
 
FibreGlass Insulation
2010-02-23 16:31:30
can fibreglass insulation blankets be broken down and reused in other applications. i currently have nearly 100tonnes of fibreglass blankets i am trying to find an alternative use for. do the chemicals, binders and additives in this material restrict the possibility of breaking it down?...
 
Small Bore Hypotube - Polished Inner Lumen
2010-02-23 16:08:28
I am looking for a hypotube (stainless steel) with an OD of 0.010" and an ID of 0.005". The challenging bit is that the hypotube needs to be about 1.5m long with a smooth or polished inner surface. Can anyone point me to a supplier with the capability to provide this type of hypotube? Thank...
 
Transformer Calculations
2010-02-23 15:48:23
I have the primary and secondary kV, the kVA and the impedance. How would I calculate the X/R? I didn't see the X/R listed on the transformer. thanks....
 
Short Circuit / Coordination Study
2010-02-23 15:45:40
If I have a hvac system condenser that is 11kvA and a hvac system duct heater that is 36kW.. how would I show that as a load on ETAP? Would it be induction machine or a synchronous motor? How would I convert those items to HP? I was told to use a formula of 1.5kVA = 1 hp from another engineer...
 
Temperature of UPVC Pipes in Storage
2010-02-23 15:32:54
sirs i'd like to ask you guys , is it required by any internaational specification to keep the temp of upvc pipes between 15-25 while they in storage area....
 
Woodburner Problems
2010-02-23 14:12:11
I finally finished the woodburner Iv had previously asked advice for, though its up and running it is by no means finished. The brief i set myself was to try to build a woodburner to heat the old pub i live in. I wanted it to be aesthetically pleasing, to have a big glass door to see the fire, for...
 
Determining the Pipe Invert Level
2010-02-23 13:56:28
Hi there!! How to find the the Invert level?? I have 2 manholes the one has IV level 1.5m , the pipe size is 200mm and the distance between 2 manholes is 20mtr.. slope 1:100. how to find Invert level of the 2nd manhole?? thanks!! the slope of 1:100 is correct?? Thank you!!...
 
 
 
 
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