HomeMy WebLinkAboutGeo Engineer Letter - BLD Inspections - 1/19/2010 RECEIVED
TAHJA ENGINEERING, Inc. JAN 19 2010
PO Box 235, Hoodsport, WA 98548
(360) 877-9512 426 W. CEDAR Sl
Mason Countv DCD
Planning Division o�d J
PO Box 279
Shelton, WA 98584
Tracy DeLeo & Charles Smith
61 N Gull PI
Hoodsport, WA 98584
(360) 877-9915
Re: Geotechnical Report
61 N Gull Place, Hoodsport, WA 98548
Parcel No.s: 42205-52-00051
Mason Co. Case No.s: BLD2009-00068
INTRODUCTION
I have been in intermittent contact with Mr. Chuck and his contractor during the construction of
the wood lag I-Beam supported retaining wall being installed at the N 61 Gull Place residence at
Lake Cushman, Hoodsport, WA.
I have periodically visited the site to inspect various stages of the work as it has progressed
through the foundation boring process, the installation of the I-beams and the installation of the
wood lagging installed between the piles. The pile fabricator informed me when the pile welding
operations were taking place and I've inspected the welds and connections at the job site.
The welds were found to be of high quality and will provide ample attachment strength between
the I-beams and the deadman anchor cables.
My latest visit to the site was Monday January 18`f', 2010 at which time I found all elements of
my design to be met or exceeded.
Please feel free to contact me if there are any questions or concerns regarding this report or my
findings.
Sincerely,
WA$
Alan A. Tahja, P.E.
�.Q 3D784
R�C1STY, �Sv
�SSIONAL
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File:C:1Projects'Smith-DeLeo-Lutham,Progvs al .A � 1 6 Sri y i J
MASON COUNTY DEPARTMENT OF
COMMUNITY DEVELOPMENT
,N
426 West Cedar Street ♦ PO Box 186 ♦ Shelton, WA 98584
(360)427-9670 EXT. 352 FAX (360)427-7798 HOME PAGE—www.co.mason.wa.us
Special inspection policy
Scope:
To ensure compliance with all provisions of Local, State and International Building Codes in addition to
all jurisdictional policies.
Responsible Party:
The owner or registered design professional acting as the owners agent is responsible to obtain, and have
pre-approved by the jurisdiction, any and all Special Inspection Agencies and/or persons employed by
such.
Policy:
Mason County allows two methods in which compliance may be obtained. Please read the following
options carefully when choosing your method of compliance and special inspection agency:
L_Option I: Registration with WABO (Washington Association of Building Officials)
The WABO registration gives the jurisdiction the assurance that the individual and or
agency has met certain criteria and that the criteria is maintained.
See WWW.WABO.ORG for listing of approved individuals or agencies.
L_Option II: Mason County will approve an individual or company, to perform inspections upon
demonstration of competence for the particular type of construction or operation requiring
special inspection. As proof of competence the individual or company will need to
conform to all of the following criteria and provide supporting documentation.
A.)Provide the name of the individual that will perform the particular type of
inspection along with documents demonstrating competency including copies of
all certifications and registration numbers pertinent to the inspection type.
Examples: (ICC, ICBO,NICET, AWS)
WA. State licensed Structural/Civil Engineers or Architects may also be accepted.
B.) When laboratory testing and field inspection equipment will be required provide
details of specific tests, the quality of the system, procedures to ensure test are
performed properly and all policies for recording, reviewing and performing
such test. An equipment log must be maintained and available for review. All calibration
maintenance records must be traceable to the National bureau of Standards, calibrations must be
performed frequently as set up per the standards.
C.)When all required information has been submitted staff will review documentation and approve
the acceptability of the special inspection competency or request additional information as
deemed necessary.
Authorization Form:
After selecting option I or II please complete the "Special Inspection Authorization" form and submit it
to Mason County for initial review.
Approved By: Mark Core Date: 10-02-07