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...
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...
