Rig for Testing Concrete Beam under Long-Continued Load |
University of Illinois Archives Sepia-toned photograph showing
device for testing stress in a concrete beam. The screw jack at
the right applies the load, measured by the deflection of the
heavy flat spring at the top. The spiral spring at the left
takes up the "play" of the nuts, keeping the load on the beam
constant. The device was designed and built in the materials
science laboratory. Found in RS 11/1/10, Vol. 4 Image measures
16.9 x 11.1 cm