Every structure supports a load:
§ Total load: the sum of all the static and dynamic loads
§ Static load: the effect of gravity on a structure (the weight of
the structure itself) also called dead load (non-moving things on the structure
add to the static load)
§ Dynamic load: the force that moves or changes while active on the
structure; also called live load
o
Called “dynamic”
because they change their magnitude, direction, and point and plane of
application.
o
Wind is considered
a dynamic load because its magnitude can change
E.g., a bridge: The static load is
the weight of the bridge itself (dead load).
The dynamic load is the weight of the moving cars
across the bridge (live load).
DRAW PICTURE OF TRUCK ON BRIDGE WITH LABELS HERE
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