However, it’s better to do some quick measurements to find out the exact length. Similarly, if the nominal length is 8 feet then the actual length would be 8 feet, and so a 12 feet length board will actually be of 12 feet long, the same as the nominal length. For example, if the nominal length of 2×3 is 6 feet, the actual length will be 6 feet. In spite of this, the length of a 2×3 board remains the same regardless of whether it is nominal or actual. So hardware stores like home depot sell lumber by their nominal size, despite being it’s incorrect. Technically the lumber was of the same size at the time of its sawing. Consequently, a 2×3 lumber’s nominal seems incorrect. The nominal or advertised size of a 2×3 lumber is determined when the surfaces are sanded to make the surface smooth, and lighter by reducing the moisture content of the wood. Though the nominal size of a 2×3 lumber is incorrect when measured, it’s still referred to as 2-by-3 lumber in local hardware stores. The actual size of 2×3 lumber is around 1 ½ x 2 1⁄2.
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