I have a contractor installing a prefabricated bridge who wants to use a welder certified AWS D1.1 in lieu of D1.5 for field welding the pile cap to the piles. The pile cap and the piles are both HP sections 12x53. Plans call for welding per AWS D 1.5 with E70XX electrodes. The bridge...
I'm including a fish screen on the intake, so any debris that did get in would be pretty small and would probably pass on through with the flow. Thank you both for your replies! It sure does help to have a forum to bounce things around in.
I don't think I can count on keeping air out of the system even if I leave the siphon full, because air will come out of the water over time. This system will not receive frequent maintenance. Likewise even if I were to dry it out after use it probably would not stay dry because the...
Should a siphon be maintained full or empty when not in use? I'm designing an 8" diameter, ductile iron siphon to be used on a small fresh-water reservoir. It will only be operated once a year. It will have a valve at both the inlet and outlet ends. Aside from priming considerations...
I am designing an 8-inch dimaeter siphon spillway for a small reservoir (about 5 acre-feet). The spillway will be for emergency draw-down only. Under normal conditions the flow is regulated through a spillway channel at one end of the dam. This siphon will only be operated once a year and in...
