Search results

Happy Friday all. Brand new practice problem (also posted in the TFS thread): The flow rate through the pipe system is 5,100 cubic feet per hour and the Darcy friction factor is known to be 0.02 through the entire system. Branch 1 is 3.5” ID, and Branch 2 is 5” ID. The total length of straight...

(B) is correct, but it would be nice if you showed more of your work for the benefit of other readers :) Maybe upload a picture or scanned PDF?

Sure! go for it.

Brand new practice problem of the week: Platform P is supported by four springs, each having a stiffness of 55 pounds-force per foot and has a load rigidly attached to it.  The load and platform have a combined mass of 44 pounds-mass. The floor is subjected to a vertical displacement with...

We have received 3 valid entries. There are two left.

Update: We have now received two valid entries.  There are still three left.

Mike submitted an entry. His was correct, but he’s not participating as he’s already a PE. We have received one valid entry other than Mike’s. Well, we’re promoting the ebooks, which is a growing but newer product (we have 3 now for TFS). 

Send it as an email attachment to [email protected]

Looks like its the same as when posting to the boards. I just started the process of sending you a DM and had the option at the bottom left to drag a file or browse for a file to attach 

Hi all, Be among the first 5 to send us via private message here either a photo or a scanned PDF showing all your work to the correct solution to the problem below and we will send you a coupon code for 50% off our TFS practice problems books. The three books combine for 230+ problems in...

You only need a good grasp of psychrometrics and the vapor compression refrigeration cycle.  You don't need to know load calculations (but might have to know the difference between latent and sensible loads), duct sizing techniques,  HVAC system design, ventilation requirements, etc. Having...

We will do that again this term. First one will be September 28, so we can get four new, free problems in the boards before the test. I'm sure people have dug up the ones from last semester, but those were discussed so heavily, that any questions anyone might have have likely already been...

Questions will not be like that. They will not provide the equivalent units in SI in parenthesis for English units problems or vice-versa. What you show here is actually two problems in one. So, you solve the problem with the given English units and then solve it again with the SI units for...

good point.  There might just be a lot of silent reading going on. 

Exam is in a little over 7 weeks.  The boards are kind of dormant.  Aren't people studying? What's going on?

Mike, we have an ebook with 40+ problems on psychometrics and HVAC system calcs. Go here to download a free sample: https://www.slaythepe.com/hvacr-psychrometrics.html

Hi Mike, Check out this thread for a few free, good problems:

Congratulations! Thanks for the shout-out.

So many posts here for me to "like" or "thank".  This functionality seems to have been disabled for me :(

Thanks for the nice words. We're very proud of our products, but in order for them to work our customers have to put in a metric ton of effort.  That's the key ingredient: YOU put in the work, so most sincere congratulations are in order. We were absolutely delighted to support you both in...