HomeMy WebLinkAbout7945.04 E 2023 0504Earth Solutions NWLLC
15365 NE 90th Street, Suite 100
Redmond, WA 98052
Main (425) 449-4704 | Fax (425) 449-4711
www.esnw.com
FIELD REPORT
Project No. 7945.04 Page 1 of 4 Report ID 7945.04 E 2023 0504
Date Thu 5/4/2023 Weather 50°F Cloudy/ Rain
Arrival/Departure Time(s) 9:30AM; 1PM, 1:30PM; 5:30PM Travel Time (hr)0.75
Project Name Canopy Property
Location 4130 Lincoln Ave NE, Renton
ESNW Rep. & Phone Willem Scherwin | 206 793 8569
Client Info/Contact Century Communities | Stacia Bloom
General Contractor Info/Contact
Contractor #2 Info/Contact
Reviewed By LAC
Initials/Date
RAC
Initials/Date Field Supervisor Project Manager
Limitations: The presence of our field representative at the site is to provide our client with a source of professional advice, opinions, and recommendations based upon the field representative’s observations and testing of the contractor’s work. Our services do not include supervision or direction of the contractor, their employees, or agents. Geotechnical recommendations for
obtaining project objectives may be made by our representatives; however, direction of the actual work should come from the owner or contractor, as appropriate. The contractor is responsible
for complying with the contract documents at all times, regardless of the presence of our field representative. Jobsite safety, including compliance with all applicable state or federal regulations,
is the sole responsibility of the contractor. The observations, recommendations, and conclusions provided in this field report are preliminary until reviewed by the ESNW project manager.
ESNW rep was onsite to observe and document passive sheer pile installation.
Passive Shear Pile Installation
ESNW rep observed the contractor excavating the northwest corner of the site, for proposed stormwater
vault. Rep observed the contractor excavating into native brown inter bedded sand with gravel, and silt
as-depth. ESNW rep observed the eastern and southern edges of the excavation to have an exposed
height of approximately 20 feet cut to a temporary 1H:1V slope inclination. The west side of the
excavation was observed to have exposed overall heights ranging between approximately 7 to 10 feet
(or less). The north portion of the excavation was observed to have exposed overall heights ranging
between approximately 10 feet at the west and 20 feet to the east (see photo attached).
Tension cracking was identified above the east/SE portion of the excavation. The tension cracks were
reported to GBI PM. ESNW recommended using passive shear piles to stabilize the slope. The passive
shear piles were drilled along the SE facing slope, to varied depths between 25 and 40 feet in depth.
The drilling contractor used a 24” auger to drill for piles 4’ apart. The vertical shafts were then filled with
4000psi grout, and the W8’ x 31 structural beams were placed into the shaft. These piles were designed
to intercept the failure plane of the slope. ESNW rep observed grey/blue clay being excavated from the
shafts at all depths excavated. The clay was observed to be drier deeper in the excavation. ESNW rep
will return tomorrow to observe the continuation of the soldier pile excavation.
Report ID 7945.04 E 2023 0504 Page 2 of 4
Earth Solutions NW, LLC
Soldier Piles Drilled
Report ID 7945.04 E 2023 0504 Page 3 of 4
Earth Solutions NW, LLC
Report ID 7945.04 E 2023 0504 Page 4 of 4
Earth Solutions NW, LLC