ME 212 Lecture Notes - Lecture 6: Flexural Strength
Document Summary
In floor framing, the subfloor is supported by light beams called floor joists or simply joists which in turn supported by heavier beams called girders then girders pass the load to columns. Typically, joist act as simply supported beam carrying a uniform load of magnitude p over an area of sl, where p = floor load per unit area. L = length (or span) of joist s = center to center spacing of joists and wo = sp = intensity of distributed load in joist. Floor joists 50 mm wide by 200 mm high, simply supported on a 4-m span, carry a floor loaded at 5 kn/m2. Compute the center-line spacing between joists to develop a bending stress of 8 mpa. Timbers 12 inches by 12 inches, spaced 3 feet apart on centers, are driven into the ground and act as cantilever beams to back-up the sheet piling of a coffer dam.
