THE 120 Lecture Notes - Fall 2018 Lecture 4 - Landsverk L180, L181 and L182, Plywood, Architect's scale
Document Summary
A theatrical device, temporarily installed on the stage, used to change elevation from the height of the permanent stage. Can be framed with: 2x4 stick lumber, 1x6 stick lumber, steel box tube. Can be decked with: 3/4 plywood/osb, 1/4 masonite. Connect platforms to each other with bolts. Making platforms structural: must be able to support. Dead load: all scenery and props placed on top. Live load: all actors who may come on and o stage, calculate ability of platform to resist three things, under given load conditions. Allowable bending and shear stresses: bending stress. A measurement of inner stress or stress in side the beam. Not a measurement of how much it actually bends: shear stress. Tendency of one part of the beam to slide past another: measured in psi, calculate using. Known total weight (dead load + max live load) De ection: a measurement of how much the beam is actually bending, standard maximum for acceptable de ection.
