REVIEWED FIR FIR2021-0097+Calculations+9.1.2021_8.40.37_AM+2387069State of Washington
Sprinkler License # Designer: Kenneth H.
Robinson RO-BI-NP-*272C2, Level 3 Robinson-Elmslie F I R2021-0097
29330124th Ave N.E. State of Washington Sprinkler
Plumbing Inc 360 403-746 WA 98223 Designer, Certificate of
Competancy #7659-0106-CE L-3
Builder: Majestic View Homes
Property address: 18711 88th Ave W, Edmonds
Total quantity of sprinkler heads: 28
Fire sprinkler system notes:
* Fire sprinkler system design per NFPA 13d (standard for houses and duplexes).
* Fire sprinkler system to be pressure tested and flow tested.
* Sprinkler piping and fittings to be C.P.V.C. "Flameguard" by Speers Mfg.
RECEIVED
Sep 03 2021
CITY OF EDMONDS
DEVELOPMENT SERVICES
DEPARTMENT
* Installation of C.P.V.C. pipe and fittings to be done by manufacturer certified installers.
* Underground water service to be combination fire and domestic.
* Sprinkler heads to be Globe Sprinkler Co. "Inch" concealed pendant with escutcheons per listing. SIN
# GL4906 and Globe sidewll SIN # GL3241.
* Lines in attic to be protected from freezing with tent insulation (by others).
* Sprinkler system to supply water connection for toilets, providing "flow through" in lieu of backflow
prevention. Dead end branch lines shall be kept to no more than 20' in length.
* Design spacing is 16' x 16' (256 square feet).
* Design Density is minimum .05 gpm/square foot
* Design area is for 2 head simultaneous flow.
* Minimum flow requirements are:
(1) head flow =13 gpm @7.0 psi (flat or sloped ceilings)
(2) head flow =13 gpm (ea) @ 7.0 psi (flat or sloped ceilings)
JOB: MAJESTIC VIEW HOMES
ADDRESS: 18711 88TH AVE W, EDMONDS
DESIGNER: KENNETH H. ROBINSON-ELMSLIE
CALCULATIONS FOR 26 GPM FLOW (2 HEADS) IND. LOSS NET TOTAL
A. WATER PRESSURE IN STREET 65.00
B: SELECT PIPE SIZE: 1"
C: DEDUCT METER & SETTER LOSS (1")
12.00 53.00
DEDUCT BACKFLOW DEVICE LOSS (NONE)
0.00 53.00
D: DEDUCT HEAD LOSS FOR ELEVATION
HEIGHT 20 X .434 LBS/FT
8.68 44.32
E. DEDUCT PRESSURE LOSS FROM MAIN TO SRINKLER
1-1/4" WATER SERVICE
ITEM QUANTITY EQUIV FT. TOTAL FT.
PIPE: 150 1 150
ELLS: 8 2 16
R-TEES 7 3 21
B-TEES 3 2 6
TOTAL: 193
TOTAL EQUIVALENT FT. X .04 PSI/FT =
7.72 36.60
F: DEDUCT PRESSURE LOSSES FOR 1-1/2" PIPING
FROM CONTROL VALVE TO MOST REMOTE SPRINKLER
ITEM QUANTITY EQUIV FT. TOTAL FT.
PIPE: 0 1 0
ELLS: 0 7 0
R-TEES 0 1 0
B-TEES 0 8 0
TOTAL: 0
TOTAL EQUIVALENT FT. X .0178 PSI/FT =
0 36.60
F: DEDUCT PRESSURE LOSSES FOR 1-1/4" PIPING
FROM CONTROL VALVE TO MOST REMOTE SPRINKLER
ITEM QUANTITY EQUIV FT. TOTAL FT.
PIPE: 30 1 30
ELLS: 7 6 42
R-TEES 7 1 7
B-TEES 2 6 12
TOTAL: 91
TOTAL EQUIVALENT FT. X .0343 PSI/FT =
3.1213 33.48
F: DEDUCT PRESSURE LOSSES FOR 1" PIPING
FROM CONTROL VALVE TO MOST REMOTE SPRINKLER
ITEM QUANTITY EQUIV FT. TOTAL FT.
PIPE: 40 1 40
ELLS: 3 5 15
R-TEES 8 1 8
B-TEES 1 5 5
TOTAL: 68
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TOTAL EQUIVALENT FT. X. 1067 PSI/FT =
7.26 26.22
WASHINGTON STATE ■
CERTIFICATE OF COMPETENCY ■
F: DEDUCT PRESSURE LOSSES FOR 3!4" PIPING
■ FIRE PROTECTION SPRINKLER SYSTEMS ■
FROM CONTROL VALVE TO MOST REMOTE SPRINKLER
Kenneth H. Robinson-Elmslie
■
■
ITEM QUANTITY EQUIV FT. TOTAL FT.
F 7659-0106-CE Level 3
PIPE: 10 1 10
1
ELLS: 1 4 4
Robinson Plumbing, Inc. _
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ROBINP 72C2 ��
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R-TEES 0 1 0
B-TEES 0 3 0
■ Expires
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TOTAL: 14
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TOTAL EQUIVALENT FT. X .0296 PSI/FT =
0.41 25.81
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REMAINING PRESSURE FOR SPRINKLER OPERATION
25.81
CALCULATIONS PER NFPA 13D A.10.4.3 (A) (2013 ED.)