Single M&T will be more than strong enough, but why not mix it up and do half of the joints single and the other half with double. No one will ever know what the joint is unless you tell them, but it will give you an opportunity to experiment and try something new
I totally agree about respecting them. Our local driver (weekly curbside pickup) is the nicest guy. fwiw, according to the interweb in 2015 Chicago sanitation laborers (I assume this includes the drivers) made over $73K/yr. This is more than a lot of the teachers and cops make where I live.
The point about fires and safety is a good one - I never thought of that. I've seen fires in trash compactors, and they seem to just burn forever. I would imagine a garbage truck would be similar.
Oh we are definitely not keeping it dark like that after all the sanding is complete. At the very least, we will be scraping the popcorn off of the ceiling and either sand and keep the drywall that's up there or paint over the stain on the ceilings with a white paint.
As for the walls, we originally wanted to do a blue wash technique but after realizing that the wood has such a natural red tint due to the heart pine, we are wondering if a blue wash would even work. I just read about bleaching but I haven't researched it too much. Worse comes to worse, we may end up doing a white wash instead. We haven't made out mind up regarding the floors yet though. Once we decide on the color of the walls, we will determine the dark or lightness of the finish on the floors.
We are located a few minutes from the beach so we are turning the house into a beachy craftsman of sorts so light and bright colors are what we are going after. The house has been altered so much over the years, it hardly holds any characteristics of its original form from what we can tell.
The problem with the belt sander was two fold. My lack of experience caused me to burn the wood a bit which I learned very quickly lol. The other is the weight of the belt sander is incredibly restraining when attempting to hold against a vertical wall for a long period of time. I'm only 37 so I'm not old by any stretch but dang my hands and wrists were killing me after only a small fraction of time while attempting to keep pressure against the wall. Thus again could be due to my inexperienced nature
Another question on this - the horizontal slots I'm going to make in the back of the beam - what's the best way to make these? I'd use my plunge router but the slots need to be 112mm deep so I guess it's time to get the drill out and bore some overlapping holes and chisel out the rest - what would you go for:
Classic auger style bit
New style auger bit e.g. Irwin blue groove (actually would be an armeg wood beaver)
Or something else?? Obviously spade ends are out of the picture as they'll chatter as soon as the hole overlaps.
I don't have a stand drill so this will be done 'freehand' with a cordless.