ASD/LRFD Manual - American Wood Council

ASD/LRFD MANUAL FOR ENGINEERED Wood Construction
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26. Arch base fastened directly to a steel tie beam in a
shoe-type connection.
Group 8. Moment Splice
Design concepts. Moment splices must transmit axial
tension, axial compression, and shear. They must serve
these functions in an area of the structure where structural
movement may be significant – thus, they must not introduce
cross-grain forces if they are to function properly.
29. Separate pieces of steel each provide a specific function.
Top and bottom plate transfer axial force, pressure
plates transfer direct thrust, and shear plates transmit
shear.
27. Similar to detail 25. This more rigid connection is
suitable for spans where arch rotation at the base is small
enough to not require the rotational movement permitted
in detail 25. Note that, although the shoe is “boxed” a
weep slot is provided at the inside face.
30. Similar to detail 29. Connectors on side faces may be
easier to install, but forces are higher because moment arm
between steel straps is less than in detail 29.
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28. For very long spans or other cases where large rotations
must be accommodated, a true hinge connection
may be required.
Group 9. Problem Connections
Hidden column base. It is sometimes preferable architecturally
to conceal the connection at the base of the
column. In any case it is crucial to detail this connection
to minimize decay potential.
M10: MECHANICAL CONNECTIONS
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