I have seen many galvanized frame buildings, but they are industrial buildings that are designed to last a long time in severe conditions. Firebrick43 is right though in that there are different kinds of galvanizing. A heavy hot dipped product has a thick layer and will last a long time. Red...
The lift would never tip over even if it wasn't anchored at all. Because the ramps on a 4 post lift are inside the posts so the center of gravity would never be outside the posts. The concern is the uneven loading.
Many of the tests I have done would require you to evacuate your neighbors from their house unless they are a couple of hundred ft away. For an air tank at 300psi, I would make sure to use water and get all of the air out. Pressure it up from a safe distance (another room or behind something...
I have hydro tested professionally for years including for companies that had ASME stamps. You can absolutely do it at home and it is exactly the same. Is this guy doing it properly and safely? Who knows without going over his setup and procedure. I will say though that I would not recommend...
It all depends on the flatness that was agreed to. The article below has some good information. Without other guidance, a contractor would be reasonable to assume that a slab would need to meet the conventional guidelines. A super-flat floor is very hard to achieve and very expensive. If the...
Keep in mind also that you may be bringing in 6,000 lbs of vehicle in the summer that is over 90 deg. That is a lot of thermal mass that will be fighting your AC until it equalizes with the air temperature. Have someone run the numbers for how many BTUs to cool that down and divide that by the...