REV 5 2020-06-19_Hyundai Fire Service Field Conflict LetterCECIL
ASSOCIATES
June 19, 2020
Jeanie McConnell
Engineering Division
121 5ch Avenue N
Edmonds, WA 98020
RE: BLD20190120 — Hyundai Sales & Service
Plan Revision: Hwy. 99 Fire Service Revision
Dear Jeanie:
We are submitting this field revision with a sense of urgency. The contractor opened up Hwy. 99 to
make a wet -tap connection for the 6" fire service and discovered existing utility conflicts with the
connection. There is a 24" dia. storm main that will prevent a wet -tap and PSE gas located behind
the water main that would prevent concrete restraint from being installed.
Therefore, we have coordinated in the field with inspector, Jeff Gaff, and over the phone with utility
reviewer, Mike Delilla, to arrive at the attached revision. A cut -in connection will be required. A
length of DI spool will be installed under the existing storm main to a 6-inch gate valve (in -line) on
the fire service branch. In lieu of a thrust block the pipe & tee will be restrained by installing Mega
Lug Mechanical Joint connections, replacing a length of 8-inch main on either side of the tee, and
Mega Lug Mechanical Joint connections from the connection to the DDCV vault.
The EBBA Iron online Restraint Length Calculator was used to verify the Mega Lug Mechanical Joint
length requirements accordingly. I've attached a photo of the conflict and a screen shot of the
Restraint Length Calculator so the calculation can be verified.
Again, we consider this to be pretty urgent. An expedited response would be appreciated. Thanks in
advance!
Thanks,
John C. Farleigh, P.E.
Cecil & Associates, LLC
CC: Frank Karreman (Architect)
Marc Ikegami (Owner)
Doug Ikegami (Owner)
Doug's Hyundai
Hwy 99 Fire Service
Pipe Material Ductile Iron
Soil Type SST
Safety Factor 9 1 9.5 to t -'
Trench Type 0 5
Depth of Bury_(ft.). ? 3 -
Test Pressure 4D 250 -
Fitting Type • Tee •
Nominal Size 8 •
Branch Size 6 = j
Length Along Run 1 8
ti
■ A ■ ■
■ r�
■• A A PROM i A L t f. INC
1_ lT 1_
17 ft. = Length to be restrained along the branch
9,348 Ibs. = Thrust
CALCULATED RESTRAINT LENGTH
'ALL JOINTS WITHIN THE CALCULATED LENGTH MUST BE RESTRAINED
'IF YOUR DISTANCE BETWEEN FITTINGS IS LESS THAN OR EQUAL TO THE CALCULATED
RESTRAINT LENGTH, RESTRAIN ALL JOINTS BETWEEN THOSE FITTINGS.
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