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If the fan is powerful enough and you provide no means for makeup air, you will draw a vacuum in the garage and eventually it will implode. Or more likely your fan will just no longer move much air. No idea where you live so it is hard to comment on the potential benefit of a heat exchanger.

Looked at that but all adjustable feet seem to require crouching down and using a wrench. Would prefer the step-on-it design to deploy wheels if anyone makes a solid product that accomplishes that.

I went to engineering school in the 1980s before tech terms like “oh my god” and “couple rattles” came out. Back then, snug tight meant tighten till there is no gap between flanges and there is enough resistance that you need a cheater bar to keep tightening. Then go 2/3 turn. Mark with a paint...

My experience is that the mix started out with very little portland cement and was then stored for a long time in very humid conditions, so some percentage of the originally supplied portland has already reacted. To remedy that issue I usually add around 4 lbs portland. I use an electric mixer...

I want to put retractable casters on a heavy work table. The cheapest casters I can find that are foot operated are here: https://www.amazon.com/dp/B08DHLJQMN/?tag=atomicindus08-20. But they look kindof flimsy for a table that, when loaded, will be 500lbs or so. I have found much heavier...

You should ask the building dept whether the 48" requirement applies to interior column bases when you have an insulated frost wall. The problem with a design that promotes frost heave under a slab is that the soil under the slab, inside a building, cant be counted on to freeze all at once. So...

Exactly. Rather than trying to isolate footings from a slab that is heaving and dropping like a yoyo, prevent the heave in the first place. I used 2" foam outside my frost walls and the soil under the slab in my unheated building never drops below 40 degrees.

Unless you plan to store some really heavy stuff on the mezz level, the simplest design that offers the most flexibility is to go with a thicker slab. At 1200 sq-ft, each additional inch of slab thickness is less than 4 yards of concrete. Find out what your point loads will be and then have an...

Designs of most products involve competing design goals and some tradeoffs must be made. They could use bare wafers but the panels would short out after the first rain or dew. And they could use plastic instead of glass, but then every homeowner with a rooftop full of solar panels would need...

That looks like a brick foundation with a cosmetic layer of concrete troweled over it. You might want to open the sheetrock on the inside to verify that the framing bears only on the brick, but if that is the case, no need to resupport while you remove and replace the concrete. No idea what...

No idea what state you are in but in CA, demanding a "structural" engineer will be more costly and is unnecessary. Unless you are building a high rise building or some other exotic structure, you may be able to hire a "civil" engineer at a more modest price.

Sometimes a detached garage is cheaper to insure than an attached garage. Might want to check with your insurance co to see if it makes a difference. Also might want to look into local tax implications. In my area, any improvement or expansion of the house is taxed according to build cost...

Who is Sedwick? If that is the HD driver, you are better off calling the HD store. Unlikely a minimum wage driver can pay to fix this.

When my doors went in, the "professional" installers left a huge amount of slack in the manual operator chains so the chains would occasionally jump a cog on the sprockets. So I opted to do DIY on the powered operator installs. Far less chance of a warranty call on equipment that has been...

Try to keep your FCAW welding away from sawdust and fine kindling wood. Ideally, take the welding work outside. If you do need to weld near all of your wood working stuff, it is a good idea to hang around for a while after the welding is done to make sure nothing is smoldering.

Biodiesel takes off por15, though it will need to remain on the surface for a few days to soften it up.

If you do metalwork, be sure to use compressed air to blow filings and grinder dust off the circuit boards periodically. Most warranties void if more than 1/4” layer of conductive grit and dust on the boards.

The next time you hike in the mountains, bring a 5 lb hammer. And when you are standing on the mile thick granite, hit the granite with the hammer and then enjoy the vibrations in the granite. More rigid materials such as steel, concrete, and granite are good at transmitting vibrations...

No idea what country you are in but if you get significant snow you don’t want windows down low under the eave line. Snow and ice will eventually break them.

What state are you in? “Well lit” is illegal in CA.