HomeMy WebLinkAboutSDP202100084 Study 2021-11-03Reporting Date:
Project Start/End:
EJ Project Name:
Store Location:
EJ Project Number:
Analysis by:
E%J
Engineering
Group
FIRE PROTECTION
CONSULTING ENGINEERS
DVAT WATER SUPPLY ANALYSIS
April 16, 2021
Start: March 17, 2021
DT — VAC 12457
End: April 16, 2021
1636 Seminole Trail, Charlottesville, VA 22901
21128
Austin Gourley & Eder Cueva
An "X" indicates water supply is capable of meeting the system demands for the following based on the
corresponding pow test/water model summary accompanying this Water Supply Analysis:
® A. ESFR Sprinkler System — Wet Type Automatic Fire Sprinkler System Only.
NFPA-13 design: 25.2K ESFR Sprinklers in Control Mode with a minimum application rate of 15 psi per sprinkler (4 sprinklers on each of
3 branch lines) with tire storage up to 25-fit in a 30-ft maximum building height & 250 gpm hose stream allowance.
• Building ambient temperatures must be maintained at 40-degrees Fahrenheit minimum 24/D365.
• System piping shall be within the heated and insulated building envelope (Arch to coordinate).
• Minimum distances from sprinkler deflectors shall be: 36-inch vertical distance to top of storage, 6-inch vertical distance to deck
and 12-inch horizontal distance to open -truss structural members. Lights, ducts, roof penetrations & equipment shall be centered
between sprinklers & branch lines.
B. Overhead & In -Rack Sprinkler System. Wet / Dry Type Automatic Fire Sprinkler System.
Use of this NFPA-13 system requires written AHJ mandate via specific Ordinance as well as approval by DTC/ATC Project Manager prior
to implementation. Use of this type system should only occur when AID will NOT allow the use of ESFR sprinklers as allowed by
NFPA-13 and preferred by DT/AT.
C. FM 8-3 Sprinkler System. Wet Type System.
A checkmark here indicates that the water supply is NOT capable of meeting aforementioned NFPA-13 Design Standard Options "A" or B"
above. Use of this system requires written AHJ approval indicating acceptance of FM Design Guides & Data Sheets. Design is based on
Factory Mutual Data Sheet 8-3 (January 2009 Edition).
FM8-3 Design:.30 gpm/sf, 2,300 area of operation with tire storage to 30-fit & 8 simultaneously operating 5.6K or 8.OK in -rack sprinklers
at 30 glint each & 500 gpm hose stream allowance. Approval by DTC/ATC Project Manager is required!
D. Fire pump Unit - Required based on the water supply data available at this time.
A checkmark here indicates the water supply is NOT capable of meeting aforementioned NFPA-13 Design Standard Options "A" or `B" or
"C". Water supply to the pump is from a public supply and adequate per NFPA-20 to avoid pump cavitation.
E. Water Storage Tank AND Fire Pump Unit - Required based on the water supply data available at this time,
A checkmark here indicates the water supply is NOT capable of meeting minimum GPM requirements for a fire pump (NFPA-20) and only
the RAW DATA (without a safety factor) meets the minimun Fire Flow (NFPA, IFC Appendix B or similar). The project Civil Engineer
shall make the final determination on the water stomge/break tank location, design and final sizing.
E J Engineering Grouo. Inc.
21505 North 78m Avenue • Suite 130 • Peoria, AZ 85382 a 623.362.1400 • W W W.eiengineering.com
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Form DVAT Water Supply Results updated Jute/201r