HomeMy WebLinkAbout20180398E003 Renton ES 16 2022-06-01 FR 015
Kirkland | Tacoma | Mount Vernon
425-827-7701| www.aesgeo.com
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This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager
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v.7.20
FIELD REPORT
Date Project Name Project No. Report No.
06/01/2022 Renton Elementary School 16 20180398E003 015
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Kelsey McCrady
Permit No. Client/Owner Attn Requested By
Renton School District No. 403 Ed Thomson Client
Engineer/Architect General Contractor Grading Contractor Weather
LPD / Hutteball + Oremus Cornerstone Continental Dirt Contractors/ Jerry Jr. Mostly cloudy, 60’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was on site, as requested, to observe building footing subgrade preparation. Upon arrival, we
met with representatives from Cornerstone and Continental Dirt Contractors (CDC).
Building Footing Subgrade Preparation:
Upon arrival, CDC was preparing footings in Area A and B for the future school building. At planned footing subgrade elevation, a moist
to very moist, gray to orange, sand with silt (native till) was observed. Using a ½-inch diameter steel T-probe, AESI probed footing
subgrades to depths of less than 2 inches and noted the material appeared firm and unyielding underfoot. The contractor then placed
4-inches of 2.5-inch minus crushed rock along the bottom of excavations to protect the subgrade. The material was compacted using a
vibratory sled compactor. All footings observed today appear suitable for the design loads. See Figure 1 for locations.
Building Pad Subgrade Preparation:
While onsite today, CDC was preparing the building pad subgrade in Area D. The contractor was excavating to 4-6-inches below bottom
of slab section and placing 4-6-inches of 2.5-inch minus crushed rock material up to planned subgrade elevation. The area consisted of
a moist, gray to orange-gray, sand with silt and trace gravels (native till). Using a ½-inch diameter steel T-probe, AESI probed the exposed
subgrade to depths of less than 2 inches and noted the material appeared firm and unyielding under equipment. See Figure 2 for
locations.
Building Slab Subgrade Over Excavation:
AESI was onsite on May 17, 2022 (See FR007) to observe building slab preparation in Area A. While onsite on this day, AESI observed
the contractor remove approximately 300 cubic yards (bank yardage) of soft soils.
Date Project Name Project No. Report No.
06/01/2022 Renton ES 16 20180398E003 015
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FIELD REPORT
Figure 1: Plan sheets S2.01 (Area A, left) and S2.02 (Area B, right). Footing subgrades observed today highlighted in green.
Subgrades observed previously highlighted in blue.
Figure 2: Green highlight indicates approximate location of building slab subgrade
preparation observed today.