HomeMy WebLinkAboutGrease Interceptor Sizing & Type.pdf1 Attachment
Steve,
In response to the TOV permit comments:
1. Grease interceptor type = Hydromechanical (i.e. uses buoyancy and interior baffles for separation). This is
true of both the specified Zurn and the approved alternate Schier GB35.
2. See attached for sizing calcs. These calcs are per the PDI method (reference 2012 IPC, Section 1003.3.4).
Thanks,
Bryan
Bryan Houle, PE, CGD, LEED AP BD+C
Principal
Rader Engineering, Inc.
40690 Highway 6, Suite E1
P.O. Box 8610
Avon, CO 81620
970-845-7910 (ext. 116)
970-470-0116 (cell)
970-845-7522 (fax)www.raderengineering.com
Northside Grab & Go - grease interceptor sizing calcs
Bryan Houle
to:
steveh@gsconco.com
07/08/2014 03:17 PM
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From: Bryan Houle <BryanH@raderengineering.com>
To: "steveh@gsconco.com" <steveh@gsconco.com>,
NGG-Grease Interceptor Sizing-070814.pdf
Page 1 of 1
7/8/2014file:///C:/Users/admin/AppData/Local/Temp/notes142542/~web6494.htm
A LENGTH:16 WIDTH:24 DEPTH:12 3
A LENGTH:0 WIDTH:0 DEPTH:0 0
A LENGTH:0 WIDTH:0 DEPTH:0 0
B 0
ZURN GREASE INTERCEPTOR SIZE PER PDI METHOD (TWO-MIN. SINK DRAIN TIME)
SIZE 800 MODEL Z1160, Z1165, Z1170, ZS1170, Z1171, Z1171-TD, Z1173, Z1174, Z1192
SIZE 600 MODEL Z1160, Z1165, Z1170, ZS1170, Z1174, Z1192
NUMBER OF COMPARTMENTS:
ENTER TOTAL GPM FLOW OF ALL OTHER SOURCES FEEDING INTERCEPTOR
ZURN GREASE INTERCEPTOR SIZE PER PDI METHOD (ONE-MIN. SINK DRAIN TIME)
INDICATES SPREADSHEET
INPUT VALUE CELL
ENTER MEASUREMENTS FOR SINK #1 (INCHES)
ENTER MEASUREMENTS FOR SINK #2 (INCHES)
ENTER MEASUREMENTS FOR SINK #3 (INCHES)
INDICATES SPREADSHEET OUTPUT
VALUE CELL
NUMBER OF COMPARTMENTS:
NUMBER OF COMPARTMENTS:
NOTES:1. PREFERRED GREASE INTERCEPTOR SIZE IS BASED ON ONE MINUTE SINK DRAIN TIME.2. ALTERNATIVELY, A SLOWER TWO-MINUTE SINK DRAIN TIME MAY BE USED IFACCEPTABLE TO LOCAL CODES. THIS WOULD RESULT IN A PHYSICALLY SMALLER,LOWER GPM UNIT.
PROCEDURE:1. THIS SPREADSHEET CALCULATES USING THE PDI METHOD, WHICH CONSIDERS 75% OF
THE TOTAL ACTUAL SINK VOLUMES AS THE DRAINAGE LOAD. ACTUAL GPM IS USED FORALL OTHER FLOWS IN SECTION "B". CUSTOMER MUST VERIFY THAT THE PDI METHOD OF
SIZING IS ACCEPTABLE TO THE LOCAL CODE AUTHORITY.2. CUSTOMER DATA IS TO BE ENTERED INTO SECTIONS "A" OR "B" AS REQUIRED. FOR
ACCURATE SIZING, INCLUDE ALL SOURCES THAT FEED TO INTERCEPTOR. LEAVE ANYNON-APPLICABLE SECTIONS BLANK (ZERO).
3. USE SECTION "B" FOR ADDITIONAL FLOWS INTO INTERCEPTOR (IF ANY) FROM ALLOTHER SOURCES, SUCH AS FLOOR DRAINS, ETC. ENTER MAXIMUM FLOW EXPECTED.
4. OUTPUTS OF THIS SPREADSHEET SHOULD BE CONSIDERED AS AN ESTIMATE.CONSULT WITH A ZURN REPRESENTATIVE TO CONFIRM SIZING.
ZURN INTERCEPTOR SIZING CALCULATOR PER THE PDI
(PLUMBING AND DRAINAGE INSTITUTE) METHOD
USING SINK DIMENSIONS