Min size for a pull “ring”

[Yikes]

I have a component on a unique project (sorry I can’t share details) that will require someone to pull on a rod. In order to make this accessible (no grasping or pinching, etc.).

I’m thinking of welding a large metal ring to the end of the rod. Is there anything in ADAS, ANSI or other standards that could tell me how big of an inside diameter I would need on the ring in order for it to facilitate a reasonable upward pull for a person who has no fingers?

 

[steveray]

Does it swing or relatively "fixed"?

 

[ADAguy]

think of your hand as a nuckle to determine the dia. of its surface area vs the size of what you intend to use.

 

[Yikes]

It should not swing, nor should it spin or rotate along the axis of the pull rod. It should just be a pull-up / push down motion.
I was looking at typical cabinet D-pulls to determine a reasonable dimension, but couldn't find any written minimum dimensions in the codes.

 

[classicT]

Interesting.... no typical standard available. I'd say a 6-in diameter would be suitable.

 

[JPohling]

why not just bend the end of the bar to be an L shape. no grasping required

 

[ADAguy]

Suggest it project a minimum 1.5" from face to allow enough distance to allow nuckel to lever against face of drawer/door and hardware.