Screw Pull-Out Strength in Wood Calculator
A screw pull-out strength calculator can help you know wheather your joints will support a load or fail before you put in the first screw. … Read more
Thomas Martinez
Brinell Hardness Chart
The Brinell scale is one of the original ways hardness was measured. It’s still used today if you’re dealing with any kind of structural metal … Read more
Lag Screw Withdrawal Calculator
Lag screw withdrawal calculator quickens shop connection inspection by estimating withdrawal capacity based off service factors, thread penetration, shank diameter, and wood specific gravity. Stood … Read more
Rockwell Hardness Chart
There’s a rack of bars made out of different types of steel, and you have to pick one so you don’t break it when you … Read more
Exhaust Fan Static Pressure Calculator
At zero resistance in perfect conditions, fans are rated for how much air they can move. In the real world there is resistance, resistance from … Read more
How To Charge Bosch 18V Battery & How Long It Takes: Light Signals
To start, you unplug battery pack from tool. The indicator lights shows how much battery life is left, so you know roughly how long it … Read more
Floor Joist Span Chart
You’re standing inside of a bare-walled, unfurnished room. The subfloor is hidden under carpet and insulation. The floor itself will also be covered by whatever … Read more
Nail Diameter Chart
Next time you find yourself holding up a pack of nails in the hardware store, contemplating whether you’re about to select the right one for … Read more
Static Pressure Loss Calculator
Air flows from the grille, across the coil, through a filter, then along a ductwork run to a fan. Every one of those items decreases … Read more
Bolt Dimensions Chart
Ever stare at an unorganized hardware box, trying to figure out why one seemingly matching bolt will not screw onto a nut? Whether fixing a … Read more
Bolt Length Chart
The hardware aisle has got you all confused. The bolts look the same but have different lengths and you have no plan for which to … Read more
Static Pressure Drop Calculator
To get the airflow you expect, you must calculate the systems resistance, measured in inches of water gauge. Failure to do so result in a … Read more
Janka Hardness Chart
Dropping a cast iron skillet on the floor? Thud. I am holding my breath now, waiting to see if I’ve done damage to that beautiful … Read more
Flex Duct Static Pressure Calculator
Before you resize or balance your HVAC branch, try this calculator: Use a flex-duct static-pressure calculator. It will help you compare accessory losses, compression, bend … Read more