K Series Joist Designation

[BONILL]

A roof framing plan specificies 16K 202/112 Joists. The designation I am accustomed to seeing is for example 16K2 joists. I imagine the numbers 202/112 refer to the allowable loads, but why two numbers? What does each really mean? What correlation is there between both types of designations?

Thanks for your time.

 

[JoeBaseplate]

First number is the total allowable, the second is live load only.

 

[JAE]

And the second number is for live load deflection - based on L/360.

 

[MiketheEngineer]

Vulcraft will for free send you some VERY good manuals explaining all that. And they probably have it on-line.

Also - go to SJI.org - good info there.