



Precast/Prestressed Concrete Institution
Big Beam Competition
Missoula Concrete Construction has teamed up with the Montana State University, Engineering Masters Program to compete in the PCI National Big Beam Competition.
The Big Beam Competition is hosted annually by the Precast/Prestressed Concrete Institute, the competition challenges university teams to design, fabricate, and destructively test a full-scale prestressed concrete beam. Judging includes:
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Structural capacity (must crack above ~20,000 lb and fail below ~40,000 lb),
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Accuracy of predictions for cracking, ultimate load, and deflection,
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Design efficiency (weight and cost),
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Innovation, practicality, and quality of reporting.

RESULTS
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Cracking load: 20 K predicted, 25-26 K observed
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Ultimate load: 36.5 K predicted, 39.6 K observed
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Deflections: 4.5 in predicted, 6.0 in observed
Ultimate capacity calculations were off by 4 kips, and deflections were off 25%.
Finished 16th Place in the Nation!

