I apologize, there is one last item #9 below I’ve added that Burnie pointed out. Should be in line with the other comments, but I thought I should include it nonetheless. Ron King, P.E. Associate, Denton Office Manager Freese and Nichols, Inc 2220 San Jacinto Blvd, Suite 330 Denton, Texas 76205 940-220-4350 Office rgk@freese.com www.freese.com From: Ron King Sent: Thursday, May 05, 2011 4:24 PM To: Brad Watson Cc: Coy Veach; Nancy Cline; burnie@dunhamengineering.com; Wiatrek, Matt (mwiatrek@teamlandmark.com); 'Clay Barnett'; Ron King Subject: RE: Cpr #24 and pics As indicated, Burnie and I went out to the site today for confirmation of the list of issues that need to be addressed on Lift #2. Nancy Cline and Clay Barnett also joined us, along with Mike King with Landmark. Burnie noted that Landmark has cut the #7 rebar indicated in issue #3 of the list at the beam seat, and cut the #5 rebar indicated in issue #7 of the list, and have drilled holes for dowels to replace the erroneous bars. Mike told me that they have stopped work on this, pending instructions from their structural engineer on what needs to be done. We also explained to Mike that Freese and Nichols’ structural engineer will need to review the Landmark engineer’s planned fixes before anything is done. There will be a meeting at Addison Service Center tomorrow at 4 pm to discuss all this. Mike was also doing full discovery measurements of the visible rebar to provide to their engineer for use. Below is the updated listing of issues based upon our site visit this afternoon. The changes from the previous listing sent out this morning are in red. The file attachments that were provided this morning still apply, but are not re-attached to this e-mail. Thanks, Ron King, P.E. Associate, Denton Office Manager Freese and Nichols, Inc 2220 San Jacinto Blvd, Suite 330 Denton, Texas 76205 940-220-4350 Office rgk@freese.com www.freese.com 1. They poured this second lift without notifying the inspector to come out and look at the rebar beforehand. We have no way of knowing for sure everything that is in the lift is correct. The only thing our inspector was able to do was to look at the rebar protruding through the top of the lift. However, that does not help us with any of the covered rebar. We recommend that Landmark be required to provide non-destructive investigation of the rebar placement in Lift #2 to clarify what was placed, sizes, spacing, cover, etc. using GPR radar (the version of GPR equipment designed for concrete investigation). I have attached a vendor that FNI uses for this, in case Landmark needs a contact for someone who does this. 2. In the pier cap shop drawing, sheet S4-D2 calls for a 1-1/2” cover over the wire mesh from the exterior face of the wall. As inspector noted, there were 5 places where it was less than this. They told us that their engineer is ok with a 3/8” variance from this, ie. down to 1.125” cover. The inspector found these some locations with less than an inch cover. 3. Look at the photo of the “misplaced 513 vertical rebar” (this is actually a D-710 #7 bar, photo is mislabeled). This rebar is encroaching into the beam seat location. The beam will be one of the beams used to support their second story floor. 4. See photo of opening for crane cables. This opening is not in the shop drawings, and there is no indication of whether this was authorized by the engineer that sealed the drawings, or how it is to be filled in. Was it reinforced? Are there structural drawings for this? 5. Tag on rebar. 6. Foam seal not seated properly. 7. Item not in the report, but discovered after further research of the photos and shop drawings – See Concrete Structural Drawings, S5-H3: D613 rebar (#6 size per sheet S20-D) is required, but #5 size was installed. 8. On sheet S5-D2, vertical D406 bar is called out, but it was not installed. The drawing shows that it is to penetrate into the top of Lift #2. 9. Some of the D512 rebar for several of the beam seats will not meet the cover for the block outs. We need Landmark’s engineer that sealed the shop drawing to provide written information on how these issues will be resolved, and when they provide this information, we need you to review it to determine if it will be satisfactory. We have informed Landmark that we can’t accept lift #2 at this point, and there shouldn’t be any additional lift pours until this is resolved. 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