Nominal vs actual brick sizes pdf

UNIT SIZES. Typically, concrete masonry units have nominal face dimensions of 8 in. (203 mm) by 16 in. (406 mm), available in nominal thicknesses of 4, 6, 8, 10, 12, 14, and 16 in. (102, 152, 203, 254, 305, 356, and 406 mm). Nominal dimensions refer to the module size for planning bond patterns and modular layout with respect to door and window NOMINAL SIZE ROUGH SIZE ACTUAL SIZE: SURFACED 1 SIDE ACTUAL SIZE: SURFACED 2 SIDES - 1/2 inch: 3/8 inch (9.5 mm) 5/16 inch (7.9 mm) - 5/8 inch: 1/2 inch (13 mm) 7/16 inch (11 mm) - 3/4 inch: 5/8 inch (16 mm) 9/16 inch (14 mm) 4/4 inch: 1 inch: 7/8 inch (22 mm) 13/16 inch (21 mm) 5/4 inch: 1 1/4 inch: 1 1/8 inch (29 mm) 1 1/16 inch (27 mm) 6/4 inch: 1 1/2 inch Nominal sizes for common sizes of dimension lumber: Find out why there is a difference between how we refer to a piece of lumber and its actual dimensions. Nominal vs actual wood sizes. Dimensional lumber is measured by a nominal dimension or it's common details: The nominal names that we're familiar with (1×2, 2×4, 1×12, etc). Nominal Size means bricks with mortar (10mm) - 200x100x100 mm Length of the brick = 2 x Width of brick + mortar Brick Size Dimension Tolerance Since we can't produce every brick at accurate dimensions, there are tolerances on dimensions Length of the brick - 100 ± 3 mm Width of the brick - 90 ± 2 mm Breadth of the brick - 90 ± 2mm Frog Impressions ASTM Standards allow the actual dimensions a permissible variation from the specified dimension. For example, the outer dimensions of a 10x8x16 unit (9.625x7.625x15.625 specified) are allowed a variation of + or - 1/8 inch. In this case the width could range from 9.5 to 9.75 inches. Nominal dimensions are those used in stating the unit size. 1 1/4 inch (31.75 mm) 1 3/8 inch. 1 5/8 inch (41.3 mm) 2 inches (50.8 mm) 2 1/2 inches. 3 inches. 3 1/2 inches. Lip sizes are also one of the most important things to know because they determine how the pieces of metal studs will fit together. Here are a couple of typical metal stud sizes as it relates to lip size. Nominal vs. actual lumber dimensions: Why a 2" × 4" is not always a 2" × 4" Lumber sizes are usually given in "nominal" measurements. The nominal measurements are a board's size before it has been planed smooth (surfaced) on all 4 sides. The actual measurements are the final size. 1x Board Sizes 1x4 and 1x6 boards lose 1/4 inch in thickness and 1/2 inch in width before leaving the mill. That means a 1 x 4 board is actually 3/4 inches by 3 1/2 inches. The larger 1x boards (1x8, 1x10, etc.) lose 3/4 inch in width. That means a 1x10 is actually 3/4 inch in thickness by 9 1/4 inches. 2x Board Sizes The 4×4's are 3 ½ x 3 ½ and the 1×6's are ¾ of an inch thick and 5 ½ wide. The first dimensions are its nominal ones, the second measurements are its actual or minimum dressed sizes. The reason for the differences is because lumber sizes are traditionally given in their nominal size. This is a well-established industry practice. When buying lumber, the nominal measurements differ from the actual measurements (so your 2x4 doesn't actually measure 2x4). Learn more. > button button The Spruce Crafts. Subscribe You've just run into the reality of actual lumber sizes as compared to the nominal sizes—the sizes by which they are identified in the store. The most common nominal thicknesses of plywood are 1/2 inch and 3/4 inch, but once again the actual sizes are slightly different. A sheet of 1/2-inch plywood i