Alternative Support Systems for Cantilever - National Transportation ...
Alternative Support Systems for Cantilever - National Transportation ...
Alternative Support Systems for Cantilever - National Transportation ...
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would be sufficient <strong>for</strong> the test. This process will be described in detail in the subsequent<br />
sections. The second test that was conducted <strong>for</strong> flexure and torsion was designed using the<br />
original half-size design of a 30” diameter. A schematic of the torsion test apparatus is shown in<br />
Figure 4-2. A schematic of the flexure and torsion test apparatus is shown in Figure 4-3. The<br />
final design <strong>for</strong> the torsion test apparatus consisted of the following:<br />
• A 26” diameter concrete shaft that extended 3’-0” outward from the concrete block<br />
• A 16” diameter steel pipe assembly with 4 welded 1” x 1” x 7” steel plates<br />
• The 16” diameter embedded pipe assembly welded to a 24” diameter, 1” thick steel base<br />
plate with 12-1.75” diameter holes drilled <strong>for</strong> the anchor bolts to provide the connection<br />
this lever arm assembly and the embedded pipe assembly<br />
• A 16” diameter, 10’-0” long steel pipe lever arm assembly<br />
• Twelve 4.5” long, 1.5” diameter A490 bolts and associated nuts and washers to connect the<br />
lever arm assembly and the embedded pipe assembly<br />
• A 6’-0” x 10’-0’ x 2’-6” rein<strong>for</strong>ced concrete block to provide a fixed support at the base of<br />
the concrete shaft<br />
• Two assemblies of C12x30 steel channels and plates to attach the block to the floor<br />
The final design <strong>for</strong> the torsion and flexure test apparatus consisted of the following:<br />
• A 30” diameter concrete shaft that extended 3’-0” outward from the concrete block<br />
• A 16” diameter steel pipe assembly with 4 welded 1” x 1” x 7” steel plates and a welded<br />
20” outside diameter annular plate<br />
• A 16” diameter, 10’-0” long steel pipe lever arm assembly<br />
• A 16” diameter, 7’-0” long steel extension pipe assembly<br />
• The 16” diameter embedded pipe assembly was also welded to a 24” diameter, 1” thick<br />
steel base plate with 12-1.75” diameter holes drilled <strong>for</strong> bolts to provide the connection<br />
between this embedded pipe assembly and the lever arm assembly<br />
• 12- 4.5” long, 1.5” diameter A490 bolts and associated nuts and washers to connect the<br />
extension pipe assembly and the embedded pipe assembly<br />
42