11--you're probably a very bright guy. Can you not readily see how preposterous the whole scheme is? Even though you have never excavated a basement, yourself (I have), can you not visualize the horrendous difficulty your crew would face by doing the project you have herein described--grading a ramp down to a level that would provide for 9' ceilings,
The ramp is 40 feet long, so the slope isn't terrible. We'd be working with ICF blocks, not heavy forms. We'll use a concrete pumper to move the concrete. We'll have to place rebar, but we can bring it down with the skid steer and work with it in small bundles.
Dunno if this is so bad... I've done a lot worse.
beginning close to an alley which I presume must be kept clear for neighbors' use--
Nope, we can get a permit to shut it down for a limited time. My structure guy needs to do a slope stability test to determine how far back our wall needs to be set. We'll pour the alley wall last, as its own pour. We can reach that wall easily from the alley.
creating that excavation, not just close to the house and garage, UNDER them!--
We'll be excavating right up to the house foundation. Not seeing the issue there.
We'll be under the garage portion, just don't hit the blocking holding it up !!!! We may do things in sections so that only part of the garage is unsupported at any time.
I think if we go slowly and work safely it can be done.
giving up part of the garage for the installation of an elevator, to get in and out of your shop!?
I'd obviously rather not give up floor space for an elevator, but I don't really have a choice.
What are my choices ?
- no connection between the main floor and the basement of the garage. <- not an option.
- stairs only. Can't move dirt bikes, table saw, steel, up and down easily. <- not an option.
- no basement at all. No place to store dirt bikes, steel, table saw, etc. <- not an option.
- move to a larger lot. Won't be inner city, way more $$$, won't have a beautiful house. < not an option.
- live without dirt bikes, table saw, steel, tools, work bench. <- not an option.
Thus I'm thinking of building a bunker ! It will be way better than if the shop was in the basement of a house.
FWIW, I'm thinking of using a fork lift mast for the "elevator". I'm looking into how to make it safe. I can pick up a slightly used 14' dual stage, dual cylinder mast for $1500.
I'm hoping to design a stair system to sit in the 'elevator" shaft. When I want to use the elevator, I'll move the stairs out of the way. Normally the elevator will sit at the bottom of the shaft, mostly unseen. This will allow me, wife, kids to go from garage basement to main floor safely. I'll put up a removable railing around the elevator "hole", making it no different than going up and down the stairs in the house.
I might also have the option of using the elevator hole floor space by parking the lift at floor level.
I'm hoping the lift goes a few feet above the main floor so that one can unload items directly off a pickup truck or trailer onto the lift and then lower them to the main level or the basement. Would be pretty handy. Remember, my goal is to have the main floor of the garage mostly empty except when I am working on a project.
I'm thinking the elevator shaft would be 5x8 or 5x10. Pretty hard to get a stairway into something that small though. There is a garage attached to a house with a half bunker nearby. I watched them build it. The stairway is about 3" wide and takes up most of one wall of that garage. Seems like an OK trade off for how nice the storage is in the half bunker. And they aren't using it for shop space.
Obviously, I'm still working on the details of all this. It helps me to explain it to other people and read their comments back. It doubly helps that said people are garage nuts ! Isn't the Interweb a wonderful "place" ?