20160427164141.pdfSwenson Say Faget
STRUCTURAL ENGINEERING
2124 Third Ave, Suite 100
I L Seattle, WA 98121
"WW1 O 206.443.6212
934 Broadway, Suite 100
Tacoma, WA 98402
O 253.284.9470
April 21, 2016
Chandler Stever
Chandler Stever Architect
RE: 190 Sunset — Grease Interceptor
We are in receipt of the permit comments by the City of Edmonds and have responded to the structural items as follows:
Building Department Comments: Structural
1. Buoyancy Calculation
Included with the updated structural calculations for the grease interceptor foundation design is a
buoyancy check. We have determined that the self -weight of the empty tank provides a factor of safety
against hydrostatic uplift of 1.76.
All revisions to the plans associated with this foundation revision have been clouded. We trust that this response letter
and revised plans adequately address your structural concerns. Please let us know if you have any questions regarding
this response.
Best,
Ryan Anderson, PE
Project Manager
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