An additional load centered at a given point. An example is a crane or hoist hanging from the bottom chord at a panel or mechanical equipment supported by the top chord.

A load which is, or may be considered, collected at one or more points.

A load applied at a specific position. e.g. load applied by an intersecting truss.

Superimposed load centered at a given point( ie roof mounted AC unit.)

Loading centred on a certain point (such as from roof-mounted equipment) as opposed to being equally distributed along the length of a member.