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Picture 1 - Typical failure of a tension member
(Bottom Chord) on a modified bow string truss. Fracture
is seen through the mid section as well as through the
bottom face of the chord.
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Picture 2 - Close up of failed section of bottom
chord mentioned in Picture 1. Note: significant knot sections
weakened the chords ability to properly transfer
tension forces.
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Picture 3 - Structural shoring is carefully installed
on the lanes. Luan is placed on the lane surface and blocking
helps to evenly distribute the loads to the cribbing beneath
the lane.
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Picture 4 - Complete setup of shoring and scaffolding
for bottom chord replacement. Note: minimal disruption
to all other areas of the bowling center.
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Picture 5 - Close up of shoring supporting truss
and ceiling joists above accoustic ceiling grid.
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Picture 6 - Failed bottom chord section has been
removed and ceiling joists have been cut back to allow
installation of new bottom chord section.
Note: Split Ring grooves in existing bottom chord section
to remain and actual split rings sit on top of bottom
chord.
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Picture 7 - New Laminated Veneer Lumber (LVL)
will be used to replace failed bottom chord section.
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Picture 8 - New LVL is installed and ceiling
joists are attached with simpson hangars.
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Picture 9 - Close up of web panel point connection
with new LVL installed.
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top
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