# Beam strenght

by ganathius
Tags: beam, strenght
 Sci Advisor P: 1,498 Strength is a term used to describe the stress loads that a material can handle. Some values that I seen on a quick google gave between 72-90MPa for spruce and pine respectively. With this number you then need to determine what stress you have in your problem. This will heavily involve how the beam is held in place, and how the beam is loaded. Typically, for pure bending, we can say that the maximum stress is $$\sigma = \frac{My}{I}$$ Where M is the maximum moment, y is the maximum distance from the centroid to the cross section tip, and I is the area moment of inertia.