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

Helion Energy Shielding Structure -Foundation February 9, 2023 Helion Energy 3. Action Item 3 — Some anchor reinforcing bars appeared to violate top mat clearances and should be re- positioned to maintain minimum cover requirements per the contract plans. See Figure 4. 4. Action Item 4 — Instances of insufficient side clear cover was noted at the rebar cage locations. After adjustment of the #11 bars (see items no. 1 thru 3), clear distances shall be re-checked to ensure meeting minimum clear cover requirements per the contract plans. See Figure S. 5. Action Item 5—Instances of loosened weather barrier sheeting on the sides of the foundation should be re- attached and fixed into place after rebar locations are finalized prior to the pour to prevent wet concrete from getting between the sheet and edge of foundation. See Figure 6. 6. Out-of-Conformance Item 1— Remnants of tie wire and mylar sheets that have fallen to the bottom of the excavated slab area should be cleared and removed prior to the concrete pour. 7. Out-of-Conformance Item 2—Instances of crossing bars in contact without mylar sheets between them were observed at a few locations on the top mat. Installation of mylar sheets at contact points between bars should be completed and reviewed by Helion prior to the concrete pour. See Figure 7. Additional Notes/In-Conformance Items: 1. General spacing of rebar, on average, was acceptable. 2. Footing dimensions, width, and depth, were acceptable. 3. Lap splice lengths were measured in field and were acceptable. 4. Top mat reinforcing and rebar cage detailing at the exposed building column locations except as noted in Action Items 1 thru 3 were acceptable. Hayden Leblonde of Andersen Construction and Paul Gentsch of Helion Energy were on site at the time of the observation and was notified of the above-mentioned action items.The additional notes were briefly discussed but have been expanded upon in this report with supplemental information. Once action items and out-of- conformance items are updated, repaired, and reviewed the structural elements should be in substantial compliance with the structural contract documents. Thank you and please call if you have any questions. Sincerely, Mackenzie Lostra, PE Project Engineer Peterson Structural Engineers Inc. Sent via email to Paul Gentsch on 2/9/2023 <paul@helionenergy.com> PAGE 12