Anyone have history, data or recommended practice information on the following:
"When the signal light turns green, the driver should remain stopped for 3-seconds of green, before starting into the intersection, to protect against cross-traffic drivers running their red light."
Evidently Bell...
On a crude oil pipeline station, when does API 1104 apply and when does ASME Section 9? On Welding Procedures, I am hearing two versions:
1) API 1104, till after the first above-gound flange, then ASME Section 9; versus,
2) API 1104 throughout ..."a pipeline is a pipeline"
It has always been a concern to me about the halo effect of pipe welds, or any welds for that matter. The heat effect of the weld in the adjacent region of the pipe weakens the pipe strength, as with any heat weld.
On a practical basis, there does not seem to be a problem, especially because of...
Two questions:
1. Is weld rod numbered by ultimate strength or yield strength? ...hearing ultimate, but want to check.
2. Seeing Welding Procedures for X-65 pipe where E6010 is used as a stringer (due to ease of laying down a good root with complete fusion) with E8010 for hot pass through cap...
Delta angles...This is one of the ways for laying out a horizontal circular curve: Deflection Angle Chord Method. Delta Angle is the central angle, measured from the center of the curve, from the Beginning of Curve (PC or BHC) to the point on the curve. A good source to learn more would be a...
If you can, get a copy of the road designs, from the Midgetman missle project. This was the one where the US was going to do a "shell & pea" hiding game with Soviet satellites as to in exactly which silos ICBMs were going to be kept. Road design wise, it involved haul roads designed for very...
What is a good Pipeline Surge Calculation Program, to make detailed surge calcuations for when valve at discharge of delivery station is shut: station piping surge, propagation of surge up mainline, additive reflective surge waves on mainline and along branch laterals
...am dealing with...
Anyone have up-to-date cost numbers ($/passanger-mile) for rubber-tire and fixed-rail (at-grade, elevated, and tunnel) mass transit systems....Interested in both Operating and Capital Recovery....
Is there any mass transit system out there that pays for itself, or does this still remain 1950's...
NPSH deals with absolute pressure, not gauge pressure.
To personify what is happening at the face of the pump impeller...
The impeller "wants" to have the fluid delivered to it with enough pressure to force the fluid up against the impeller, such that th impeller can try "grabbing" and...
