HomeMy WebLinkAbout20180398E003 Renton ES 16 2022-07-18 FR 039
Kirkland | Tacoma | Mount Vernon
425-827-7701| www.aesgeo.com
Date Mailed:
Principal / PM: Bruce Guenzler, L.G., L.E.G.
This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager
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FIELD REPORT
Date Project Name Project No. Report No.
07/18/2022 Renton Elementary School 16 20180398E003 039
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Samantha Parker
Permit No. Client/Owner Attn Requested By
B21004604 Renton School District No. 403 Ed Thomson Contractor
Engineer/Architect General Contractor Grading Contractor Weather
CPL / Hutteball + Oremus Cornerstone/Kyle Continental Dirt Contractors/ Jerry Jr. Cloudy, 70’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences (AESI) was on-site in the afternoon for observation of footing subgrade and sewer line backfill,
at the request of Jerry Jr. of CDC. Upon arrival, AESI met with Jerry Jr. of CDC and Kyle of Cornerstone.
Footing Subgrade Observations – Area C
While on-site, AESI observed new footings that had been prepared in Area C, as shown in Figure 1. Using a ½-inch
diameter, steel t-probe, the bottom of the excavation probed generally less than 2 to 4-inches and appeared firm and
unyielding underfoot. It is the opinion of AESI that the footing subgrade observed today appears suitable for the design
footing loads.
On-site Sewer Line Backfill
While on-site, we observed that approximately 3’ to 4’ of sewer line backfill, consisting of on-site soils, had been placed
between Sanitary Sewers #1, #11, #10 and #9 (Figure 1). The backfill was placed in 1’ to 1.5’ lifts and compacted with a
hoepac. AESI used a density gauge to test the new backfilled sections. Test results met or exceeded 95% compaction
(Table 1). In our opinion, based on our observations and test results, we found the observed area of the sewer line
backfill today to be firm and unyielding.
Table 1: Compaction Test Results
Test
No. Location
Approximate
Backfill Depth
Relative to Existing Ground Surface (ft)
Proctor
(ASTM D1557)
Dry Density
(pcf)
Moisture
%
Compaction
% Pass/Fail Notes
1 See Figure 2 0 133.5/8.2 130.9 6.5 98 Pass
2 See Figure 2 0 133.5/8.2 130.0 7.8 97 Pass
3 See Figure 2 0 129.9/9.2 123.6 7.2 95 Pass
4 See Figure 2 0 126.9/10.5 122.1 7.5 96 Pass
5 See Figure 3 0 129.9/9.2 128.4 6.5 99 Pass
6 See Figure 3 0 126.9/10.5 121.3 8.5 96 Pass
7 See Figure 3 0 129.9/9.2 124.1 5.4 96 Pass
8 See Figure 3 0 129.9/9.2 124.2 5.9 96 Pass
9 See Figure 3 0 129.9/9.2 123.3 6.2 95 Pass
10 See Figure 2 0 126.9/10.5 121.1 9.4 95 Pass
11 See Figure 2 0 126.9/10.5 120.7 8.1 95 Pass
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Date Project Name Project No. Report No.
07/18/2022 Renton ES 16 20180398E003 039
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FIELD REPORT
Figure 1. Sheet S2.03 The location of footing subgrades observed today in Area C are indicated in red. North is to the right
of the figure.
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Date Project Name Project No. Report No.
07/18/2022 Renton ES 16 20180398E003 039
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FIELD REPORT
Figure 3. Sheet C3.2 The observed area of sewer line backfill is indicated in blue. North is to the right of the figure.
1 2 3 4
10
11
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Date Project Name Project No. Report No.
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FIELD REPORT
Figure 2. Sheet C3.1 The observed area of sewer line backfill is indicated in blue. North is to the right of the figure.
5
6
7 8 9
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Date Project Name Project No. Report No.
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FIELD REPORT
Photos 1 & 2. Several of the areas of footing subgrade observed today in Area C.