limiboomer

I agree, assume cracked if you can. If your design can only work with uncracked, you must consider seismic load reversals, etc. To make sure your uncracked concrete does not become cracked during seismic loading. I don't have the code with me at the moment so check me on this. But I don't recall that the localized stresses due to the anchor loadings need to be considered. I believe that it is the initial condition that is at issue, that is, is the concrete already cracked.

What is the technical definition of cracked and uncracked concretes? Under what circustances do we design cracked concrete or otherwise? Cracked and uncracked sections in relation to Liquid retaining structures as per IS 3370 The tensile stresses in concrete are reduced to provide uncracked sections.

A bending compression zone in a thick beam or a compression only column should be acceptable for this. I'm going to check this though. RE: ACI 318 Cracked vs uncracked concrete for anchor analysis (Structural) 4 Oct 09 21:03. I'll double check in the morning when I can look at ACI 318, but I don't believe that it specifies what types of loads to consider or not consider. It just says that if analysis shows no cracking at service loads, then you can use the 1.4 factor for uncracked concrete. I've had to use rebar welded to embed plates on a number of occasions recently to get away from App.

D, because I just couldn't get the anchor calcs to work. RE: ACI 318 Cracked vs uncracked concrete for anchor analysis (Structural) 5 Oct 09 08:34. I was stopped at a traffic light this morning on my way in to work and I happened to be under and overpass. There were concrete wall abutments on either side with precast box girders spanning between them. The overpass was roughly 15' high. The abutments were doing 15' of retaining, but I'd be willing to bet that analysis would show no service level tension to exist on the exterior face of the walls (yes, this is the tension face for retaining, but I believe the DL of the bridge would more than offset this) let alone service level cracking. There were, however, significant and numerous cracks (both vertical and horizontal). Download Serial Number Idm.

Kerkythea Sketchup Plugin Download Free on this page. Just something to think about. RE: ACI 318 Cracked vs uncracked concrete for anchor analysis (Structural) 31 Oct 09 17:45.

All concrete inevitably cracks, large or small, coarse or fine. A crack is a crack, what 'Definition' are you exactly looking for? Windows Program Keystrokes.

If you are asking design of the concrete for flexural, and using strength design method, then the tension side of the concrete, at least on theory, is already cracked. If you are concerned with leakage through cracks, see ACI CH10.? For crack control criteria, and commentary on deviation of the 'z' factors.