Beam 04
Beam 04 : (Fire Pr) a. The solid or trussed main structural side member of a ladder supporting the rungs or rung blocks. Also called: Spar. See: Ladder; Rails (1). b. = (Brit) string. (2) (Build) A horizontal structural member resting on supports and carrying loads such as floors, roofs, walls, etc. (3) (Phys) a. A stream of electromagnetic energy propagating directionally, such as an electron beam, a radio beam, or a searchlight beam. b. To emit a directional ray of electromagnetic energy. (4) (Metrol) The transverse bar of a balance, supporting the weighing pans
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