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Thanks emmgjld. Big help.

Thanks emmgjld. When you say it is used for quick checking and used in addition to Standard compaction, does that mean, the result cannot be accepted as official if used as stand alone reference of compaction test outcome? How much margin of error are we expecting if we compare these results to...

Thanks Ron. Hats off!

Last one Ron. I've come across this practice before. What is the reason behind. Is it cheaper? Quicker?

Thanks for the response Ron. Does that mean, the contractor used a different method of compaction testing? Is there a way of converting the 102% to standard compaction so I can check how much percentage achieved against the 100% standard compaction requirement.

Hello everyone. Our project requires subbase courses to be compacted to not less than 100% standard compaction. The contractor's compaction report submits a test report as Hilf density ratio being 102%. Can this be intepreted as compliant having exceeded the requirement by 2%? So for subgrade...

Thanks f-d. To progress our solution for my case, I will now undertake some ground improvement to address the issue of settlement. For a depth of 0.7 as you assumed, how much bearing capacity should be provided by the "ground improved" soil? Do I need to make sure the "ground improved" soil...

Thanks Ron for your patience. I got your point from your first response. Ok, let me exagerate a little bit. Say I have a 5m x 5m footing. What Im after is how to account for the effect of the footing load to the weak soil 2 metres (not 6 metres) below the engineered fill. Is my proposed...

Thanks guys for the very prompt reply. I can identify from your replies that I need to account for settlement and the influence of the 2metre fill into the underlying soft or weak soil. With this taken into account, I would assume there would be very little left of the weak soil bearing...

Hi everyone. Requesting your expert guidance on what we normally call "standard engineering practice". I have a soft ground with about 40kPa bearing capacity. I will have an 2 metre high engineer's fill above this soft soil where my 2mx2m footing will be seated at. The footing was design with...

corrosionman Thanks for the reply. Sorry Im not a welding person. Can you please advise the length and spacing of the runs and the throat size of fillet weld. Did you do any preheating? And is macro test result sufficient for the acceptance of "welding Qualification by testing" Thanks.

Hokie66 Its a manufacturer specs so cant do much about it. Are there any issues with square billets? What is the industry practice for a 15T overhead crane. I've only done 2 cranes and both have this for their rail.

Metengr Thanks for the reply. So for any welding procedure, are we saying preheating is mandatory, even if only tucking it to set it to proper alignment? What are the chances it will misalign? How to weld the joints? Is cut square or bevelled acceptable? Is weld required for the full cross...

I am required to install a 2-63mm x 63mm x 100metre billet for an overhead crane rail. This is to be welded into a crane rail beam. Can someone please provide some advise on the following issues: What are the acceptable welding procedures? I am told of 3 methods - Thermic, puddle arc and flash...

To close this out, I understand we need to check the pump curve on the resulting Q (Q2) based on the new pressure head requirement. Correct me if I'm wrong but any 'significant' change in the head (in this case due to additional fitting loss caused by the reducer) will have a corresponding...

Thanks BigInch. To clarify, V2 will be calculated on the assumption that Q1 = Q2. I would have thought at some point the flowrate will change. How do we determine this? Thanks. Nimajoef

Desertfox, I got E axial= 0.01 and E lateral = 0.0053. Good point rconner. Will do.

Thanks for the reply desertfox. In my calcs, I calculated the change in length by multiplying strain = elongation = change in length / original length. That gives me 10m. Same with change in diameter by factoring in v=0.35. I then get 0.55mm. Would you mind showing me your calcs? Thanks

Hello everyone. Can someone please advise whether my calculation of pipeline diameter reduction due to applied axial force is correct. Given are the following: HDPE Pipe OD158, ID136 Length = 1000 m Mod of Elasticity = 1300 MPa Tensile Yield Strength = 26 MPa Allowable axial pulling force =...

Hi all. I have a slurry pipeline 150dia Steel Pipeline 40 km long which will need to tie in to a 90dia Steel pipeline 12 metres long at the discharge end to make use of existing valves and instrumentation. Im now trying to calculate whether there will be any changes to the flowrate. Pump Q =...