They work real well OH, you mean how to they WORK? If you will look at the photo of the, you will see that the long end goes in the F/T and then up and over the end of the F/T into the sump. The end in the sump is looped back up to the desired height to allow them to draw water from the F/T into the sump. When the water level gets below the upward end of the loop, they cease to siphon water into the sump. When the water level gets much lower, a sump electrical switch with a float shuts off the power to the pump.1 - How do those siphons work? Can't really wrap my head around the fluid dynamics involved.
The 4" X 4" post there are more shallow in the ground so I braced them. The piece that you see running at an angle actually is braced against another piece (you can't see) running at a 90 degree angle under ground.2 - What is the purpose of the side braces on the GB? It seems to me that they are built in a cantilever setup and do not offer much structural integrity.