2021-10-19 - Stubenrauch Residence Deck - GEO430211 (2)OTTO ROSENAU & ASSOCIATES, INC.
Geotechnical Engineering, Construction Inspection & Materials Testing
GEOTECHNICAL INSPECTION REPORT
Report Number: 430211
Description: Underpinning Installation
Project: Stubenrauch Residence Deck Permit Number: BLD2021-1245
Address: 16907 76th Avenue West, Edmonds Job Number: 21-0784
Client: Stubenrauch, Melissa
Inspector
and Date Remarks
Scott Hoobler, Arrived on site as requested to observe the installation of 3-inch diameter hydraulically -driven Grip-Tite
PE piers driven into the subgrade to a point of refusal using SPX Power Team hydraulic cylinder jack by
10/19/2021 Robbins and Company at the southwest corner of the residence. The piers were installed to a pressure
that did not exceed 21.7 kips or 21,700 pounds as per the project plans and project structural engineer's
structural calculations. The piers were installed in 3-foot sections. Listed below are the pier locations
(locations corresponding with the approved project plans), depth of the bottom of the existing footing
(measured from the adjacent ground surface), the final installation depth (in feet -inch), design load of
each pier (pounds), and the final installation load (pounds). The final installation depth is measured
from the bottom of the existing footing.
Grip-Tite Pier
Location
Depth of
Existing Footing
(inches)
Final Installation
Depth
(feet -inch)
Final Installation
Load
(pounds)
1
12
3'-1 "
19,240
2
17
2'-10"
21,164
3
16
2'-11"
21,164
4
17
2'-9"
19,240
5
17
3'
20,202
6
22
7'-6"
20,202
7
24
2'-8"
21,164
The installation of the Grip-Tite Piers was done in accordance with the approved project plans.
Copies to:
Owner X Contractor
Architect X Building Dept. Technical Responsibility:
Engineer X Client Anthony Coyne, P.E., Senior Engineer
This report applies only to the items tested or reported and is the exclusive property of Otto Rosenau & Associates, Inc. Reproduction of this report,
except in full, without written permission from our firm is strictly prohibited.
Page 1 of
6747 M.L. King Way S., Seattle, Washington 98118 — Phone (206) 725-4600 — Fax (206) 723-2221
Form No.: ADMIN-100-01 (Rev 01105)