PalmerGeo - RRC FIELD REPORT 9-20-2021Rose Ridge Condominiums
Field Report Observations
P* PALMER
C/Geotechnical Consultants, Inc.
FIELD REPORT
Project Name: Rose Ridge Condominiums
PGC Representative: Meghan Hallam
Time Onsite: 8:45 am
Daily Task: Observe helical piles and load test
Project Number:
Date:
09.20.2021
19011
09.20.2021
Weather: Sunny
Comments
Palmer Geotechnical Consultants (PGC) onsite as requested to observe the installation of helical piles at
the project location. Five helical anchors are part of the design as tie -backs. Helical anchors are 5 feet
in length at 1.5-inch diameter, with an 8-inch lead flights followed by a 10-inch flight. Refusal criteria
is 550 psi driven with a rubber track excavator.
Due to complications that arose from the existing catch basin and associated pipes, on Friday, September
17, 2021 the contractor and Pile King representatives exposed the pipes and catch basin. Helical anchors
1, 3, 4, and 5 were placed 10.0 feet in at prescribed angles and backfilled. H1 was advanced on Friday
with refusal of 1,550.0 psi for 15.0 feet at 19 degrees. On Monday, September 20, 2021, PGC was onsite
to observe the advancement of A3, A4, and A5. A3 was advanced to refusal of 1,550.0 psi for 20.0 feet
at 19 degrees. A4 was advanced to refusal of 550.0 psi for 35.0 feet at 17 degrees. A5 was advanced to
refusal at 1,550.0 psi for 20.0 feet at 16 degrees. A4 and A5 will be cut back to meet the whaler for a
total length of 31.0 and 17.0 feet, respectively.
Helical
Length
Angle
Al
15.0'
190
A3
20.0'
190
A4
35.0'
170
A5
20.0'
160
A pull test was performed on A3. 1,000 psi was placed on the helical anchor and sustained for 10
minutes.
Photo 1: Looking north at A3 in the foreground, Photo 2: Photo shows pull test being performed.
A4, and A5.
Rose Ridge Condominiums
Field Report Observations
09.20.2021
The work observed today was in general conformance with the project documents and specifications.
PGC site Representative:
Qeghan Hallam
Attachment: Pile and Anchor Schematic