Trail Ridge (U.S. 34): This road through Rocky Mountain National Park is the highest continuous auto road in the country. Itâs truly an all-American icon â the road itself is listed on the National Register of Historic Places.
Lumber Dimensions. 2x4s are not actually 2 inches by 4 inches. When the board is first rough sawn from the log, it is a true 2x4, but the drying process and planing of the board reduce it to the finished 1.5x3.5 size. Here are the common sizes of lumber, and their actual sizes.
Once planed, the wood is considered finished.. Thus, the nominal size of the lumber you purchase is different from the actual size. Ususally, there is 1/2 inch difference in measurements over 2 inches and 1/4 inch in measurements less than 2 inches.When the  (inch) symbol is used is lumber measurements it indicates that you are referring to the actual size.umber Sizes and Measurement. Framing lumber is identified by the height and width of the board. The measurements used, however, may make you think you are getting cheated! A 2x4 board is actually only 1 1/2 inches by 3 1/2 inches.