Hertz is a unit of frequency (of change in state or cycle in a sound wave, alternating current, or other cyclical waveform) of one cycle per second.
The Anthony 2400F Glulam is a superior glued laminated beam and header for use where reliable engineered wood applications are required. Anthony 24F Glulam is an economical alternative to LVL and PSL in many standard structural applications where the high strength and stiffness values are not needed. Anthony's Glulam is readily available through stocking dealers. The 3-1/2 and 5-1/2 widths are available which match 2x4 and 2x6 wall framing.
The term binding joist is sometimes used to describe beams at floor level running perpendicular to the ridge of a gable roof and joined to the intermediate posts. Joists which land on a binding joist are called bridging joists. A large beam in the ceiling of a room carrying joists is a summer beam.