1313 75TH ST SW 2023-12-11 - Laserfiche WebLink

installed at an absolute minimum.This was discussed on site with Andersen and remedies were underway. See attached photo#2.—#5 anchor reinforcing bars (unhooked,vertical leg only) were installed at the subject anchor. Note that bars were shorter than typical to fit within the confined space. Installed conditions appear acceptable to PSE for the subject anchor. - A large concrete block was noticed sitting in this area within the rebar cage region and should be removed prior to the pour. See attached photo#3.—Block appeared to have been removed by time of SO#4. Note that in the northwest corner instances were observed where CMU blocks were used to support bottom mat of rebar (similar to a dobie). Instances observed were acceptable to PSE. - A large steel rod was noticed on the edge of the foundation (south side near middle) and should be removed prior to the pour. See attached photo#4.—Observed to be corrected at SO#4. Instances of concrete dobies no longer needed for cover maintenance should be removed, if possible, prior to the pour. See attached photo#5.—Visibility was limited by formwork, anchor templates, and congested reinforcing at time of SO#4. PSE recommends Andersen review dobies and bar clearances prior to the pour. At the building column footing locations, the shorter threaded rods with the large steel plate washer (6" x 6") was elevated above the Styrofoam layer which deviated from the plans, however,this is acceptable as is. No adjustments are required prior to the pour.—Previously resolved. The wood forms for the keyway blockouts did not match the geometry on the contract plans. Possible resolutions were discussed in field, however, it was agreed that the best solution would be to reconstruct the key forms to be 12"x12" square at the large end and include a 3" deep taper along all edges, per the contract plans.—Corrected keyway blockout forms were observed and appeared to be in general conformance with PSE's plans. - At the pilaster dowels, irregularity in angle and elevation of the top of the form savers was observed.These should be corrected and adjusted for plumb-ness of the vertical leg for ease of installation of the future pilaster reinforcement bars. See attached photo#6.—Slight inconsistencies in elevation and plumbness remained during SO#4 (see attached photo 32). Prior to pour, review and correct formsaver/dowel locations to the greatest extent feasible.There shall be no instances where the top of formsavers are at an elevation below the finished surface. See previous email from Bill Sandbo on 2/15/2023 (see attached) regarding accommodating/adjusting formsavers that sit proud of the finished concrete surface. - El HESS Foundation SO3 Photos Items discussed during SO#4/Pre-pour Meeting: - One instance was noted in the northwest corner where both anchor reinforcing#5 bars were placed on the same side of a perimeter wall block anchor(see photo 43). Bars shall be relocated or added such that they are on either side of the anchor, as shown in Detail (4/SF7) of PSE's drawings. - PSE understands the pour is scheduled to begin around 4:OOam tomorrow. Potential cold weather impacts were discussed. PSE understands that Andersen doesn't plan to use heaters, but thermal blankets will be laid following the pour. - Bill Sandbo (PSE) intends to be present for part of the pour. - Boron Carbide to be added on site. PSE understands Andersen intends to keep a detailed log of boron carbide and other admixtures included in each truck load. - Concerns regarding concrete flow and stability were discussed. PSE understands representatives from Otto Rosenau will be present during the pour to sample for testing. - Anchor templates and formwork may limit the crew's ability to achieve desired finish.Andersen anticipates some additional finishing work following the removal of the template. - Andersen informed PSE that they intend to wet set the premolded joint filler material at the perimeter of the new mat foundation. Action Items: 2