Nobody here has enough information to give you a meaningful answer.
I would guess that one was original and one was added later by a homeowner. So the original builder concluded one post was sufficient. But a later homeowner concluded only the one was not sufficient.
If it is loose, its...
The other factor is dimming.
LED bulbs/fixtures can have difficulty with some dimmers, even if they are specified as "dimmable".
Lutron (big manufacture of dimmers) has an online program that you can input the model number of your dimmer, and size and color temperature of the bulb you want to...
Watts is not a measure of light intensity, lumens is. Just look at "lumens" not somebody's interpretation of "similar to".
I like about 2400 lumens for a medium sized room (about 100 - 120 sq ft). (Somewhat more if its a work area)
That fixture would likely be too small for me (although...
The obvious answer is the replacement stones that Wasabi sells.
Although you might want to spring for the diamond set. I have a set of diamond stones for sharpening my tools, and love how easily they cut, and don't lose their flat surface.
I use "shoes" as slippers, inside the house.
But my "indoors shoes" are not used outdoors.
I buy slip on shoes for inside the house. They cost about the same but last far longer than most "slippers".
I even have a second set of slippers for the basement shop. If I am working on something...
Concrete will simply cure slower in cold temperatures.
Only problem can be if the concrete freezes within the first 24 hours or so. So pouring concrete on frozen ground is a no-no. The curing process generates a bit a heat, so temperatures have to be a few degrees below...
The standard one, which will say "3X stronger".
The "8X stronger", I think they just put fillers in it, so the cured compound is itself likely stronger, but the bond to the wood is already stronger than the wood, and with all the fillers in it, the "8x" stuff is extremely difficult to squeeze...
I like PL Premium.
But just about any of the construction adhesives will give you a joint stronger than the wood it is fixed to.
If you really want to study this to death, check out what Todd found.
Project Farm Part 1
Project Farm Part 2
But not sure plywood is going to give much stiffness...
I don't think you need a vapor barrier. And my mommy says I am very smart.
But seriously, the structural engineer and foundation repair man both recommend a vapor barrier. And you are looking for a DIYer like me, who has never seen your house, to tell you otherwise ?