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Scott Manley visited the testing site and has a video on the subject https://www.youtube.com/watch?v=ITGgRhjcHAM he was there just after the 4th flight test of the model unit

Check your local supplier if they have carboys 15 gallons and weigh 130 lbs. So can be moved with a hand truck My crew picks them up with a maximum of 6 at a time in a trailer or pickup bed need to keep it under 1000 lbs., otherwise placards and hazmat are required. My local delivery is a...

Lugging used to be really bad as the oil pumps (or other methods such as slingers) were fixed size and a low rpm and heavy load would not float the bearings and cause damage. Modern engines have better oil control to avoid this.

Without a thrust face in undisturbed soil, the volume of material to hold the block in place needs to rely on gravity and friction, a complex calculation. Vertical thrust blocks use gravity for the vertical down bends and enough rebar is added to hold the block together, and there is enough...

I remember seeing a chart that had particle size verses drop velocity for particles with specific gravity of 2.65 (silt/sand/pebbles in water) but I do not remember where that was. So, targeting the particle size you wish to capture, then ensure flow across the bay is has a Reynolds number less...

I use C-900 all the time A few vulnerabilities Shading is important if using native backfill, but that is true of all buried pipes. Inserting the spigot into the bell the correct distance and not all the way. If the pipe is consistently pushed to home, the pipe can fracture starting where...

Friction loss is not your problem. 30 gpm in a 4 inch has minimal friction loss. increasing to 6 inch will not fix that. Is the pressure from the supply consistent? Do you have power? Can you get power? if no power, a small bank of solar panels could power a set of 1/6 or 1/3 hp circulating...

Ed There I beg to differ I prefer to replace a cheap plastic fan when it fails in 5 to 10 years which pulls a suction on the room and vents it outside (put the fan in an easy to replace location) Than to pressurize the room with the corrosive agent which will leak out any penetration be it...

This is a case where the designer look at a chemical, in this case NaOCl and see that if the concentration is less than 1% it is not hazardous according to NFPA, which is why salt generators run that low of concentration. True all sorts of rules fall by the wayside, (containment, placarding...

I have had good luck about a decade ago with Charlatte my client had a bladder fail and they replaced it under warrantee https://charlattereservoirs.fayat.com/en

The grid fins do not fold down on super heavy, that is part of the design, they do twist though. The grid fins are also support structure for the tower to catch, lift, set and hold while at the launch stand. My guess adding a pivot weighs more than the performance loss of having them in the...

EPAnet it is still free...

Thanks for all your comments We got the SCADA settings to ignore the spikes and will schedule a replacement sensor and cable as soon as time and budget allow Hydrae

Thanks Dan Yes it is a 2 wire loop powered device, there are no motors in the area or any other source of noise, it is a tank on top of a hill, there is a farmhouse nearby but no heavy machinery. the times of the spike appear to be random. I do not have a tight correlation on the source being...

Thanks for your quick replies Spikes would not be real It is a ground level steel water tank for domestic use 350,000 gallons The fluid is filtered water Spike height is different value every time Scada box transmits the reading every 2.5 minutes, the window you see is a few hours the...

Got a problem I haven't seen before, got these spikes in the output of a submersible pressure transducer These spikes occur at random times about once a day or so This is measuring level in a water tank Tank is 24 ft tall The reading ignoring the spikes is cycling between 18 and 20 ft...

If you have doubts, figure a way to test the structure. I had a project were a concrete earth anchor was loaded by a falling tree the broke the wire rope it was holding, when we installed the new rope, we then did a test load (at 2x) and confirmed it was solid. Your loads are vertical down, so...

We called is a gravity block and the detail I am familiar with puts all the concrete below the pipe and uses loops of rebar around the fitting into the concrete with j-hooks embedded into the concrete The pipe will also have polyethylene encasement to allow access to the bolts in the future...

This company makes fittings to your specification https://specifiedfittings.com/

I would only allow if humidity is properly controlled through positive pressure containment and active mechanical dehumidification with 3rd party inspection prior to coating for the near white blast. Hydrae