Recent content by Danno63

It is more important to consider what is beneath the concrete. Concrete has excellent compression strength, not as much under shear. If the base under the concrete is solid, the concrete itself will support a lot, something better than 2000 psi.

I just stuck it in between the trusses and friction held it. Those wires would eliminate the need to screw a board. I did it a long time ago but it wasn't that big of a deal.

If the motor is 7.5 HP, this means about 5625 Watts (1 HP is about 746 watts). If you are running 220V, the steady state current will be about 5625/220=25.6 Amps. With an 80 foot run (loop is 160 feet), the voltage drop will be about 4V with #10 wire, 2.57V with #8, and 1.47 V with #6. Also...

I used a 10K BTU kerosene heater in a 588 square foot garage with R19 in ceilings, R13 in walls, and an insulated 16' garage door (21X28 feet garage). I heated nicely, it was just slow. That heater would lift the temp about 40 degrees when there was no wind. I think a 30K heater would...

My handle is Danno63 and I am a DIYer near Fredericksburg, VA. I try to do as much DIY as I can. I am an electrical engineer by degree, and was raised in the country. My father was a DIYer and out of necessity our family had to do as much as we could as there was no calling a carpenter...