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E-l9 <br /> , . , _ MOUNU UESIGN WORKSHEET <br /> (For Flows up to 1200 gpd) <br /> , <br /> A. FLOW . � � D-7 <br /> � �`� Estimated �o c� gpd(see pages D-7 or I-3,4,5) �����»�� <br /> ,..��►�� <br /> or measured gpd. .�«. � n m a <br /> � � � �: .o. <br /> B. SEPTTC TAIVK LIQUID VOLUMES ; .'p ;; � � <br /> T �0l0 � �07 �70 <br /> a� -i c�v gallons (see pages G3 or C-5) • �� n+ �• a•�.• <br /> C-3 <br /> C. SOILS (refer to site evaluation) �tlflC TAM(CA/ACfl��,/1 OALLqq <br /> 1. Depth to restricting layer= a:�' '- �•,,_.'' inches �a � «� <br /> ..�» �...�.,�. .,»e... <br /> 2. Depth of percolation tests = 1 � lACiIES �a� ��� ���� <br /> 3. Percolation rate ati .4 mpi �«� �«: ,..� <br /> 4. Land slope � 9'0 '°"' "" "'• <br /> ...� .... ..�. <br /> D. ROCK LAYER DIMENSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock , <br /> layer: A x 0.83 = <br /> �ov gpd x 0.83 sq. ft./gpd = 1�� sq. ft.-} �o�o s4 7 <br /> 2. Select width of rock layer(10 feet or less) = i o ft. <br /> 3. Length of rock layer= area+width= • <br /> s�� sq. ft.+ _f�ft. _��ft. Rock Bed <br /> �r.r.i r.f.r.r.f . <br /> ti ti ti�•=•ti•ti.ti•ti • • :;•ti <br /> --� ti:�f�:;f;:�ftirtiri��fYr�r�rti�� dth S10ft <br /> •r.r•r•F•i r•�•r r•S�r�r. 3 S <br /> •'r:}�i�i�r;r�i�i;r S•i:"r��i�J� <br /> E. ROCK VOLUME �-- t„�,gw <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; <br /> ,;:�.2 Sq. ft. x /.n ft. =s�U cu. ft. <br /> 2. Divide cu. ft.by 27 cu. ft./cu. yd. to get cubic yards; <br /> C7 y cu. f t. +27=_�cu. yd. <br /> 3. Muldply cubic yards by 1.4 to get weight of rock in tons; <br /> �,i cu. yd. x 1.4 ton/cu. yd. = a�tons. <br /> F. ADSORPTTON WIDTH <br /> 1. Percolation rate in top 12 inches of soil is � .� mpi E-16 <br /> 2. Select allowable soil loading rate from table on page E-16; ��•+�«.+�.�waw�w.ew�w <br /> . � gpd/ft2 �..�. ....,....... <br /> nN �1 M�� <br /> 3. Calculate adsorption width ratio by dividing rock layer """" '"" """ '""" `"""'"' <br /> :�':�: :» ;» �:; �:p <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; �• ;» �M :N :« ::N <br /> 1.20 gpd/ft2+_,�8Pd/ft2= � .• .« •�•• •.� ,.p •� <br /> •� •�!� �.N �.M �.N �.M <br /> Check this value on page E-16. <br /> 4. Multiply adsorpHon width ratio by rock layer width to get � <br /> required adsorption width; <br /> __ �x�ft= �. D ft <br />