Failure Path & Net Area Tutorial
The purpose of this tutorial is to help you to learn how to select VALID
failure paths and compute the associated net areas.
- SCM Specification Chapter B is the reference section for determining net
- A valid failure path for tensile rupture will have the following
- All path segments will have a directional component that is
perpendicular to the load direction
- After fracture, the "loaded" side will have NO BOLTS.... this means
that all the bolts are "left behind" on the very end of the member.
- Net areas are MEMBER DEPENDENT. This means that in a CONNECTION
each connected MEMBER will have it's own net area and hence it's own tensile
- The tensile rupture capacity of a connection equals the smaller of
the capacity of the members pulling in each direction.
The Practice Examples
There are an infinite variety of tension connections that can be made,
however the same basic principles apply in all cases. The following
examples are only a few possibilities. Hopefully you will come to
understand the principles as you work through the examples.
- Example #1: A simple three
member tension splice
- Example #2: A tension splice connecting two W sections by the web
only using two splice plates
- Example #3: A tension splice connecting two W sections by both the
web and the flanges
- Example #4: An angle connection