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
Thomas Martinez
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
Wood Moisture Content Chart
The lumber you bought felt dry to the touch but was still wet on the inside. You sanded it down smooth and gave it a … Read more
Dust Collector Static Pressure Calculator
Static pressure = resistance air meets in moving from a tool through ductwork to a filter. The more resistance (static), the less airflow. Resistance is … Read more
How Long Does a Greenworks 24V Battery Take To Charge? Light Indicators
Check your battery Always double-check the battery life prior to doing a job. You don’t want to be mid-job and have a dead battery. To … Read more
Tongue and Groove Sq Ft Calculator
Tongue-and-groove boards create interlocking edges and shadow lines that dont exist with drywall. Before you get started, figure out how much material is needed. Boards … Read more
Plywood Thickness Chart
So when you grab a sheet from that one and rip it off the rack, you think you’ve got three quarters of an inch in … Read more
Tongue and Groove Ceiling Calculator
The boards draw your eye toward the ceiling. They look better and also improve sound quality. In an old house, they cover up uneven joists. … Read more