Handling Specialty Concrete Pipe
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A
balance, as the actual center of gravity was not precisely known, and was different for each component.
B
Walsh said that the sling lengths were chosen to provide calculated sling angles and maintain specific hook heights at given
C lifting radii. The two sections of pipe that weren’ t
D
lifted using the rectangular CMOD spreader frame were pieces of the Cross T connector that needed to be lifted separately from the connector’ s center box
E
to avoid undue stress on the components and joints.
F
But even those two straight pieces of pipe got kid-gloves treatment.
They were lifted using Ga 37-metric-ton capacity lifting beam and synthetic round slings in basket hitches.
H
“ Using the lifting beam for those pieces eliminated the need to reconfigure the CMOD for those picks,” Walsh said.“ And
I it still enabled using basket hitches. The pipe was too sensitive and critical to risk simply choking the short Jstraights with a single sling.”
Color coding shows how the tridents and center box fit together. Each trident is in its own color, and the Cross T section that they connect to is blue.
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0 '
GRAPHIC SCALE: 2 ' 4 ' 6 '
10 ' 12 '
SCALE: 1 " = 6 '-0 "
1 2025-06-20 REV
DESCRIPTION
EPT JDA MTW 2025-06-20 DRWN CHKD APPR
DATE
SIZE
CL
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