A specific type of plate used in floors or roofs, often made of reinforced concrete. They can be one-way (supported on two sides) or two-way (supported on four sides).

The tables found in design manuals are derived from classical linear elastic theory, which assumes materials are homogeneous, isotropic, and follow Hooke’s Law. Kirchhoff-Love Plate Theory (Thin Plates) For plates where the thickness ( ) is significantly smaller than the span dimensions ( ), Kirchhoff-Love theory assumes:

Find the negative moment coefficient ( Cmcap C sub m ) at the center of the long support edge. Calculate Design Moment: Evaluate

Contains highly detailed coefficient tables for rectangular plates under uniform and hydrostatic loads.

The analysis of plates, slabs, and diaphragms is a cornerstone of structural engineering. From the reinforced concrete slabs in a building to the steel plates in a ship's hull, understanding how these flat structural elements respond to loads is critical for safe and efficient design.