Quantcast
Channel: RAM | STAAD Forum - Recent Threads
Viewing all articles
Browse latest Browse all 16762

Inconsistencies in deflection checks, DFF, unity ratios?

$
0
0

Hello,

I'm working on a model and am having some issues with the deflection check. I've attached a picture. So as you can see from the picture, I have a unity ratio of 1.178 under Deflection Clause, in member 36 for LC 603. The beam is 10m long and has DFF of 350 assigned. It's a single line member (i.e. no intermediate nodes in the member and no need for DJ1/DJ2 commands). If I view this member, annotate the deflection it shows deflection 38.916mm. The deflection at the end nodes is 5.294mm and 5.211mm. So the max. local deflection is 38.916 - (5.294 + 5.211)/2 = 33.664mm. Allowable deflection is 10,000/350 = 28.571mm.  33.664 actual / 28.571 allowable = 1.178, which is my unity ratio. So far so good. However, if I go into the Beam window by double clicking on the member, then go to Deflection tab and look at local deflection for LC 603, it shows a maximum deflection of 76.323mm! Why is this so different, and why is it not being picked up in the unity check? Thanks in advance for any answers!


Viewing all articles
Browse latest Browse all 16762

Trending Articles



<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>