... painting, and shipping 2. 10 BUILT-UP SECTIONS These are members made up by a fabricator from two or more standard sections Examples of common built-up sections are shown in Fig 2. 2 Built-up members are ... Society for Protective Coatings, Forty 24 th St., Pittsburgh, PA 1 522 2.) 2. 12 FABRICATION TOLERANCES Variations from theoretical dimensions occur in hot-rolled structural steel be...
... original force F FIGURE 3. 3 Resolution of a force in three dimensions 3. 3 3. 4 SECTION THREE Fx ϭ F cos ␣x (3. 2a) Fy ϭ F cos ␣y (3. 2b) Fz ϭ F cos ␣z (3. 2c) F ϭ ͙Fx2 ϩ Fy2 ϩ Fz2 (3. 2d ) where ␣x, ␣y, ... F1x ϩ F2x ϩ F3x (3. 3a) Ry ϭ ͚Fy ϭ F1y ϩ F2y ϩ F3y (3. 3b) Rz ϭ ͚Fz ϭ F1z ϩ F2z ϩ F3z (3. 3c) The magnitude of the resultant force R can then be determined from R ϭ ͙Rx2 ϩ Ry2 ϩ Rz2...