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MORAN ENGINEERING ASSOC., LLC
94'[ Main Stree#, P.O. Box 183, South Harwich, MA 02661
Danief P. Croteau, PE (508)432-287$
Richard 3udd, RS FAX 508 432-3501
MicP►ael Ladue, PLS � )
MoranEng@gmail.cam
Town of Yarmouth Health Department
1146 Route 28
South Yarrnouth, Ma 02664
Re: l42 Ocean Ave 12/20/2016
South Yarmouth, Ma
(To accompany Septic Design Plan,Project: 16-245,dated: 11/4/16}
BUOYANCY CALCULATIONS
1500 GALLON SEPTIC TANK-Monolithic-H 10 {Acme/Shorey Precast Concrete Products}
High Groundwater Elev. -Bottom of Tank = Submerged Depth
El. 2.5 - El. -0.35 = 2.85'
Submerged Volurrze x Weight of Water = Buoyancy
10.83'x 5.67'x 2.85' x 62.43 ibs/cf = 10,926 lbs T
Tank Weight(empty}per Shorey Co. Specs. = 12,0041bs�.
Soil Cover Ballast=(10.83'xS.67'-2x�t1'xl')x(E1.6.0-E1.5.3}x $O lbs/cf=3,0861bs
Effective High Groundwater Tank Wt. = 12,000 lbs+3,08b lbs— 10,926 Ibs=4,1601bs•�
l 000 GALLON PUMP CHAMBER-Manolithic-H 10{Acme/Shorey Arecast Concrete Products)
ti�
High Groundwater Elev. - Bottom of Tank = Submerged Depth 3��,�?n OF hlqSsqCy
El. 2.5 - El. -l.l = -3.6' o� DANlEL ��,
� P. c�
� CROTEAU N
c�vi�.
Submerged Volume x Weight of Water = Buoyancy A No. 46253 �
8.25'x 5.5' x 3.6' x b2.43 Ibs/cf = 10,19$ lbs T �o.��FcrST��'�°��,````
Tank Weight(empty}per Shorey Co. Specs. = 9,2001bs .�
��%'� �Sule ;
Soil Cover Ballast=(8.25'x5.5'-n l'x 1'-nl.3'x 1.3')x{E1.S.7-E1.4.6}x 80 lbs/cf=3,249 lbs
Effective High Groundwater Tank Wt. =9,200 lbs+ 3,249 lbs— l 0,l 98 Ibs=2,251 lbs.� ',
Civil Engineering • Land Surveying