To 240850
Check publication "Guide to the construction of reinforced concrete in the Arabian Peninsular," published in 2002, joint publication of 'The Concrete Society' & 'CIRIA.' This was originally published as a CIRIA Special Publication 31 in 1984.
* CIRIA, 6 Storey's Gate...
I agree with BryanStein.
We had a roll out section for a tunnel (about 3.2 m diameter) that had 3 rows (50 each) of 50 mm dia bolts. The specification was for the bolts to be clean & lightly oiled & then tightened up to (in those days) 3,800 lb ft torque. Tensioned to 50 %, 80 %, 100 % & then...
Brain
I would use steel piping & definitely the air vessel. The hydraulic ram works on water hammer & the pressure rise due to a shut off of 1 m/s is 100 m & only about 40 m for PVC.
It may be worth a try to use PVC (for cost) but I think you will go back to the conventional method (steel pipe...
Brian
I can see where you are coming from & I agree that back to back pumps would not be a viable option for you. It appears that the hydraulic ram is certainly the answer. I think your case of beer is very safe.
At one stage, there was also a hose pump tried in developing countries where a...
I found the article.
The book is Foundation Engineering Handbook with chapter 23 'buried structures' by R K Watkins, engineering experiment station, Utah State Uni.
On page 655 (section 23.8), Watkins shows a graph of a tunnel load coefficient (Cw) vs H/B (depth / diameter), to be used in...
I have seen an article (as part of a book with many authors) where Watkins gave details of loadings on trenchless construction. I think he has taken over from Marston & Spangler in pipe research.
Sorry, I can't remember the book.
Regards
barrya
Brian
There is another way of pumping water without using a hydraulic ram or an external source of power. Use a pump to pump the water required & power the pump with another pump (turned back to front so the the second pump acts as a turbine to drive the first pump).
1 PUMP 1 - Determine the...
You surprised me - seeing that the last comment was in May, I didn't think that you would still be interested in more info & I didn't expect you to answer.
The hydraulic tests were done for a major water utility in the State of Western Australia.
Regards
barrya
Several years ago, we did a series of tests in a hydraulic lab to model reservoir flows based on various inlet & outlet locations. The reservoirs were up to 200 m square & up to 10 m deep & used for balancing storage in a large water distribution system. Several conclusions were made: -
* wind...
One Australian manufacturer is named 'Billabong' in Melbourne I think.
The best publication I have used, is 'A Manual of the Hydraulic Ram for Pumping Water' by Simon Watt.
It is published by Intermedialte Technology Publications (ITDG)of 9 King St,London WC2E 8HN, UK.
This manual (about 40...
