Construction How Many Trucks are Needed to Fill a Compacted Trench
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- čas přidán 11. 09. 2024
- Great construction PE problem! These can be hard with swell factors and shrinkage factors.
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Thanks for checking things out!
Why did you divide the volume of the pipe by 4?
Hi escdelesp, that is part of calculating for the area using the diameter of pipe. Area = pie * (diameter of pipe/2)^2, the four comes from the squaring of the 2.
The new PE Reference handbook (Page 47) states that Shrinkage is [(Compacted Unit Weight) - (Bank Unit Weight)] / (Compacted Unit Weight) and x100.... can you help explain why this was changed in your equation or what I can do to get the same answer? Thank you!
Under section 2.1.1 in the PE Reference Handbook make sure you use the first two equations. You'll end up with the same answer.
@@samwisenim I definitely see what you mean by using the two equations on page 47 of the NCEES Handbook 1.1 (CBT) and basically solving them both for the Bank Volume and then setting them equal to solve for Loose Volume. That is correct. However, @Kyle Loomie asked how the instructor derived the equation for shrinkage factor as SF = (BV - CV)/BV from the NCEES Handbook equation given.
For the last part you can combine the VL and VC equation by subbing in VB from the VL in the compacted volume calculation.
Answer is 10.4. Awful close to 10, and 1 truck. Something go wrong here?
any other civil pe construction example videos you might recommend ?
please re-master this video with the ncees pe hb 1.1 in tow. thank you.
ncees hb 1.1, p. 47.
cerm is dead.