What Are The Diamonds On A Tape Measure

The diamonds start at the 19 2 inches mark on the tape and can be utilized to help correctly space the floor trusses for a 4 8 t g sub floor with a span rating of 20 o c.

That fractional measurement is based on supporting an 8 foot plywood panel with five evenly spaced trusses. The first black diamond is at 19 2 and after that black diamonds appear at 38 4 57 6 76 8 and 96 or 8 feet. The numbers that were mentioned above also come into play here. The small diamonds are typically seen at the 19 2 inch mark on the tape measure.

The next black diamond is 19 2 inches away from the first stud 38 4 inches from the beginning of the tape measure and the diamonds go all the way to the 96 inch mark or 8 feet. They start at 19 2 inches which was originally used in metric layouts. That is one less stud for every 8 feet of wall counting the beginning and end studs. Image by josé manuel de laá from pixabay.

Ever noticed the little black diamonds or triangles on your tape measure. The black diamonds are. The black diamonds on the top scale of a tape measure are for truss layouts for eight foot sheet goods. The black diamonds give you the assistance that you need with your floor trusses.

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96 inches divided by five gives 19 2 inches so five trusses per sheet. The significance is not lost on us. It stands to reason those who make money for building will need tape measures that are a little more in depth than those of us who just get them out to check our height.