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Eight cones were produced with a method called metal spinning. These cones contain one verticalPessure Test Results of the Toledo Metal Spinning Cones, 2005
weld seam, and one cirumferential (and angled) weld near the tip of the cone. These cones are also
slightly thicker than the SNL cone. Because of the manufacturing process, the appearance of these
cones are much more uniform than the SNL cone. For the 2005 tests, a welded cap covered the tip
of the cone.
All values listed on these pages should be considered preliminary until listed in the final report.
Cone Designation Initial / Ultimate
Buckling Pressure (psi)
Measured Thickness(in) Notes: T01-2005 1.25/1.25 0.031 pressure values from video only;
laser scans, strain gages
T02-2005 1.23/1.25 laser scans T03-2005 2.50/-- luan stiffeners; global failure mode T04-2005 2.37/-- luan stiffeners; global failure mode T05-2005 3.22/3.76 1/2 inch plywood stiffeners on the outside, intial buckling at the tip T06-2005 3.62/4.52 1/2 inch plywood stiffeners on the inside, initial buckling a the tip, higher failure mode observed at increased load