Column ^ 



I Diameter ! ' 



USEFUL DATA 



SPIRAL COLUMNS 



Safe Axial Loads in Thousands of Pounds 



New York City BmuJiNG Code Requirements 



Ratio of Length of Column to its Side or Diameter, 

 limited to 15. 



Spiral 

 Columu 



NOTB — Size and pitch of spiral wire la given at head of each group of loads for each size column. 



12s 



