®
B r i d g e S e t
T r u s s e s
8
Trusses
Kingpost Truss
Figure 13 shows a simple king-
post truss made from #5 and #4
beams. Use a hanging mass to
apply a load.
Lay the kingpost truss on the
table to comare its horizontal
and vertical stiffness.
To build a three-dimen-
sional structure, connect
two trusses with #4 beams
(Figure 14)..
Add cross bracing to
increase stiffness
Queenpost Truss
To make a queenpost truss, separate the kingpost truss in the middle and
add a square section.
Legs can be added to any
truss or bridge (Figure 15).
#4
#4
#4
#5
#5
Figure 13: A simple
kingpost truss
Figure 14: (Left) A three-dimensional kingpost truss structure.
(Right) Kingpost truss with cross bracing
#4
#4
#4
#4
#4
#4
#5
#5
Figure 15: (Left) Queenpost truss. (Right) Queenpost truss with legs.