ACI 318-05 Equation 10-14 2

[steellion]

Quick question: In this equation "M2,min = Pu*(0.6+0.03h)", does "h" refer to thickness or height? According to the glossary, it could be either! It is frustrating that a code would use the same symbol for thickness and height.

 

[slickdeals]

Thickness

 

[frv]

h is the thickness of the column in the direction being analyzed.

I guess it could be confusing, but the reason h is defined as such, is that it is also considered the height (read "depth") of the member when referring to flexural members.

In all cases, it is always a measure of one of the cross-sectional dimensions, not a "length", per se.

 

[steellion]

Thanks, slickdeals and frv. ACI should really clarify it in the code because logically, in my mind at least, it could be either and yields very different results.

 

[Lion06]

The definitions at the beginning show h as height of overall member thickness - see page 22. That's where I always go if something isn't clear.

 

[steellion]

Page 22: h = overall thickness OR height of member, in.

 

[frv]

lion... that's what steellion was referring to.. the definition reads "overall thickness or height of member.."

 

[Lion06]

Oh, that it could be one or the other?

 

[Lion06]

Forgive me not reading the entire OP very clearly!