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Engineers
2 150 Sclt Avc., Suites t4S + CTVm ntv, CA 95938 • (916) 564-6029 fa Fax; (916) 56s-6029
June 21, 2005
Mr. Abbie Moreno
Minute Man Products
305 West King; Street
East flat Mock, INC 22726
RE; Propane Tank Tie Downs
Dear Mr. Moreno;
Per your inquiry, please be advised the tic downs shown on the drawings entitled PROPANE
TANK FLOTATION TETHERING & SEISMIC STABILIZATION for above ground
installation can be used for propane tanks buried in the ground without any changes.
There will be an additional factor of safety from the earth overburden on.the propane tank.
Sincerely,
David A. Dahmen P.E.
v_M+ I ,—n*+
tLLVAI IUIV
351 TO 1500 GALLON TANK
2 STRAP PLACEMENT
0 TANK
SEE
i IF OCCUR
T3
h
CROSS SECTION
PLACE SINGLE 57RAP AS CLOSE TO
TANK CENTER LINE AS POSSIBLE
YPICAL
STRAPS - SEE
NOTE 4 ON
SHEET 2
EARTH AUGER
W/SPLIT BOLT & NUT
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V
I
STRAPS - SEE
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NOTE 4 ON
SHEET 2
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EMIR
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TIE 0 CONC. FLOOR
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EARTH AUGER
w
J
W/SPLIT 90LT k NUT
ELEVATIO
UP TO 350 GALLON TANK
EARTH
AUGER
1 STRAP PLACEMENT
Pacific
Consulting
Engineers
2150 Bell Ave., Suite 145 • Sacramento, CA 95838 • (916) 564-6028 • Fax: (916) 564-6029
e-mail ddahmentace@aol.com
MINUTE MAN ANCHORS, INC.
PROPANE TANK TETHERING & SEISMIC STABILIZATION
Design Loadings: Flotation —Tank empty,
fully submerged
2010 CBC and IBC
Seismic Importance Factor.... 1
Site Classification ..................... E
Sos................................................ 1.68