Exposed vertical risers from industrial machinery shall be permitted to be supported at intervals not exceeding______ $\mathrm{ft}$, provided the intermediate metal conduit is made up with threaded couplings, is firmly supported at the top and bottom of the riser, and no other means of intermediate support is readily available.

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The Answer of Exposed vertical risers from industrial machinery shall be permitted to be supported at intervals not exceeding______ $\mathrm{ft}$, provided the intermediate metal conduit is made up with threaded couplings, is firmly supported at the top and bottom of the riser, and no other means of intermediate support is readily available.

Exposed Vertical Risers from Industrial Machinery Shall Be Permitted to Be