20080616155006.pdfor Epi City of Edmonds
PLAN REVIEW COMMENTS
4
BUILDING DIVISION
Esr 8go (425) 771-0220
DATE: June 17, 2008
TO: Valerie Sargent
FAX: 206-749-5005
FROM: Ann Bullis, Assistant Building Official
RE: Plan Check #2007-0685, 2007-0331
Project: Point Edwards Building 10 Shoring and Grading
Project Address: 50 Pine Street
During re -review of the above noted project, it was found that the following items still need to be
addressed. PIease respond in writing to each item and include the location(s) of the changes to the
plans/documents, and cloud the changes made. Please resubmit plans/documents and written comments
to Marie Harrison, Senior Permit Coordinator.
i. Previous item 3: As clarified in my 4114/08 comments, the safe dispersal area must be a minimum of
50 feet from any portion of the building, including decks. Please revise and show 50 foot dimension.
IBC 1023.6 exception (a thru e).
2. Previous item 4: Provide structural details and calculations for the site retaining walls, and cross
reference the details on the site/civil plans. Since this is a separate application from the main
building permit, referenced details from the structural plans must be included with this set of plans.
Please provide 3 copies.
3. Previous item 5: Special inspections are required for the Shoring and Grading as follows:
a. By the Geotechnical Engineer of Record
i. Excavation, grading and site preparation
ii. Shoring installation and monitoring, including placement of concrete
Ili. Soil bearing verification
iv. Placement of fill and compaction
v. Retaining wall construction, including drainage
vi. General site monitoring
vii. Final special inspection letter
Complete the enclosed Special Inspection and Testing Agreements, have the owner, general
contractor and special inspector sign the forms and return for Building Official approval prior to
permit issuance.
4. Provide letters from Civil and Shoring Engineers of Record for responses to consultant comments for
items 5a, 5b, & 6b (attached for your convenience).
Ann Builis, City of Edmonds
Shoring for Building 109
Pian Review Number 1118-307
July.21, 2007
Page 2 of 2
5. The general design for the Shoring:
a. Although the Soils Engineer determined that seismic earth pressure on the shoring
should be 17H psf with surcharge such as shown on Sheet SH -2 for Piles Al, A2, A22,
and A23 plus all of the B -B Cut bine Piles, it is not apparent that the Ground Support
engineer used it in his design_ This should be addressed.
b. It is not clear what is being done at the Terra Associates' C -C Cut Line area to mitigate
the need for shoring at that the Terra Associates brought up. This should be addressed
and justification should be provided.
6. The Shoring and Rockery walls
a. Since the rockeries exceed 4' in height and may have vehicle surcharge, they have to be
designed for a combination of active pressure, surcharge loading, and seismic loading.
Section 1521.1.2. it is possible that the Figure 2/Triad Associates' Sheet 8 is showing
this, but I would need to verify it by a design and justification of that design.
b. The 30" wide concrete portions around the steel piles need to resist the lateral bearing
stresses with an ultimate strength of 2000 psi outlined in Section 1805.7.3, Item # 1 or
Item # 2, "controlled low -strength material'. Note 21SH1.0 specifies it is to be "Controlled -
Density -Fill", which 1 am assuming is supposed to be the specified material_
PCA's Engineering Bulletin on the "Design and Control of Concrete Materials" seems to
address what the plans refer to, but it normally reaches anywhere between 100 to 1200
psi strength, so some technical parameters have to be placed on the material so that it
reaches the 2,500 psi specified and those should be on the plans.
7. There is a note about the pressure treatment of the wood lagging, but I don't find any thing
about its grade and specie of the wood in order to verify its span, nor materials used for its
resistance to ground contact. Sections 106.1.1, 2301.1 and 2311.3.
CLOSING
As stated in the beginning of this letter, the designers should revise the plans and specifications
and resubmit them with a letter explaining what they did including any rebuttal to the issues and
should indicate on which sheet or detail the correction may be found. If the engineer or architect
disputes call me and discuss those issues they may do so to the number on the letterhead.
Thank you for the opportunity to be once more of service. An invoice for this review and
subsequent recheck(s) and relevant calculation booklets will follow under separate cover.
Sincerely,
.terry J. Barbera, P.E. and M. ASCE
Construction Codes Consultant