Response to BLDG 1 Comments (2).pdfC �
ENGINEERING
May 14, 2018
civil & structural
engineering & planning R E S U 13
MAY 15 2018
BUILDING DEPARTMENT
CITY OF EDMONDS
Chuck Miller, Plans Examiner.
City of Edmonds Development Services, Building Division
Second Floor City Hall
121 5th Avenue N
Edmonds, WA 98020
RE: Application #: BLD2017-1841-1st Review
Project Name: The Graphite Art Studios Temporary Shoring
Project Address: 202 Main Street
Dear Mr. Miller,
Itemized below is our response to the building review comments in the February 27, 2018 letter to
Gregg Property Associates for the above referenced project. Our response appears in bold.
Sheet C3.1 — GRADING AND DRAINAGE PLAN
1. Plan 1— Grading and Drainage Plan — Clarify on the plans the reference to the following elements:
• The '4-foot maximum height concrete wall' located at the northwest corner of the site.
• The '3-foot maximum height wall' located at the northeast corner of the site.
The '4-foot maximum height wall' located along the south side of the site.
The 'footing drains' along the southwest corner of the site.
While each reference a 'section' on sheet'C3.2' detailing the required construction, structural
calculations supporting the designs of the retaining walls could not be found among the provided
construction documents. It should be noted on the plans if this work is to be completed under a
separate permit.
Supporting calculations are provided with the resubmittal.
Sheet C3.2 — GRADING AND DRAINAGE DETAILS
2. Section 4 — Retaining Wall Section at NW Corner
a. Provide as part of a complete permit application submittal structural calculations supporting the
design of the represented structure. It should be noted on the plans if this work is to be
completed under a separate permit
Supporting calculations are provided with the resubmittal.
250 4th Avenue South, Suite 200
Edmonds, WA 98020
ph.425.778.8500 1 f.425.778.5536
www.cgengineering.com
Graphite Art Studio 16259.22 May 15, 2018
Comment Response — Building #1 Page 2 of 3
b. Clarify on the plans the indicated minimum depth of the drainage fill zone behind the retaining
wall. It does not appear to correspond with that specified in the 'Retaining Wall Backfill' section
(page 11) of the provided 'Geotechnical Engineering Report' — Project No. 1798.01— prepared
by ZipperGeo.
Revised.
3. Section 5 — Retaining Wall Section at NE Corner
a. Provide as part of a complete permit application submittal structural calculations supporting the
design of the represented structure. It should be noted on the plans if this work is to be
completed under a separate permit
Supporting calculations are provided with the resubmittal.
b. Clarify on the plans the indicated minimum depth of the drainage fill zone behind the retaining
wall. It does not appear to correspond with that specified in the 'Retaining Wall Backfill section
(page 11) of the provided 'Geotechnical Engineering Report' — Project No. 1798.01— prepared
by ZipperGeo.
Revised.
Sheet SH2.1 —SHORING PLAN
4. Plan 1— Shoring Plan — Provide a note on the plans (or in the applicable referenced sections —
4/SH2.1 and 5/SH2.1) indicating that the foundation/foundation wall work is to be completed under
a separate permit.
Note Added.
Sheet SH4.1 - SECTIONS
5. Section 1
Provide a note on the plans indicating that the referenced elements on the'building-side'
(elevated post -tensioned slab, concrete wall, drainage matting, waterproof membrane, welded
headed studs, concrete slab, etc.) of the shoring are to be completed under a separate permit.
Note added.
Clarify on the plans the note: "Concrete above excavation line per structural notes." A
corresponding note could not be found among the provided construction documents.
Detail note has been revised, refer to Details 1/54.1 and 2/S4.1.
250 4th Avenue South, Suite 200
Edmonds, WA 98020
ENGINEERING ph.425.778.8500 1 f.425.778.5536
www.cgengineering.com
Graphite Art Studio 16259.22
Comment Response — Building #1
May 15, 2018
Page 3 of 3
6. Section 2 — Clarify on the plans the note: "Concrete above excavation line per structural notes". A
corresponding note could not be found among the provided construction documents.
Detail note has been revised, refer to Details 1/S4.1 and 2/S4.1.
7. Detail 3 —Typical Straight Pile Detail — Provide a note on the plans indicating that the referenced
elements on the 'building -side' (exterior wall, exterior building wall, concrete wall with
reinforcement, concrete wall, etc.) of the shoring are to be completed under a separate permit.
Note added.
8. Detail 4 — Typical Corner Pile Detail — Provide a noted on the plans indicating that the referenced
element on the 'building -side' (concrete wall) of the shoring is to be completed under a separate
permit.
Note added.
9. Detail 5 —Typical Reentrant Corner Pile Detail — Provide a note on the plans indicating that the
referenced element on the 'building -side' (concrete wall) of the shoring is to be completed under a
separate permit.
Note added.
STRUCTURAL CALCULATIONS REVIEW
10. Sheet 11— Allowable Capacities per Geotech — Skin Friction — Clarify the noted value in tons per
square foot (tsf). It does not appear to correspond with that indicated on sheet W (a copy of the
'Lateral Earth Pressures Temporary Soldier Pile Wall' detail referenced in 'Soldier Pile Shoring and
Lagging Design Parameters' section (page 17) of the provided 'Geotechnical Engineering Report'
Engineering Report'— Project No. 1798.01— prepared by ZipperGeo)
This was an error. The soil friction value has been updated, and the calculated capacity is still
greater than the design load. Please see the attached revised calculations with the updated sheet
11.
If you have any questions or comments regarding the responses to this review, please do not hesitate to
call.
Sincerely,
CG Engineering
Dennis Titus, PE, SE
Project Manager
250 4th Avenue South, Suite 200
Edmonds, WA 98020
ph.425.778.8500 1 f.425.778.5536
ENGINEERING www.cgengineering.com