2A Industry Applications: Computer Makes Precise Purlins

  • Roger W. Bolz


Erectors of steel-frame buildings may not realize that the purlins they get from Molenco (Houston) are now sized with help from a microprocessor and a brushless AC servo drive. But these commonly used structural members are roll formed in C and Z cross sections from blanks precisely cut to specified length, and punched with rivet or bolt holes, if needed. Any sledge-hammering required during fit up is due to mismatches in the surrounding steel, not to deviations in purlin length.


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Copyright information

© Chapman and Hall 1985

Authors and Affiliations

  • Roger W. Bolz
    • 1
  1. 1.Automation for IndustryUSA

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