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, <br /> CASCADE VIEW PRESBYTERIAN CHURCH <br /> Celcula[ions For Drainage Plau <br /> 1• �exiet � 0.61 x 0.9 + 1.55 x 0.05 + 0.20 x 1.31 � 0.26 <br /> 3.47 <br /> Z• T� � 500 + 10 � 21.9 min. " • <br /> 6p z.7. � <br /> 3, i ��� in/hr for a,�S�yFer etorm • <br /> l. 25 <br /> 4. Since there ie no off-s:te drainege, the tribu[ary area - erea of [he site � <br /> 3.47 acres �, 2S /. / 3 <br /> � . 0.26 x�,�l1 x 3.47 �-1�r36' cf a <br /> 5' Qellow <br /> 6. Thie eite is not in tl�e combined aewer area, therefore, the design etorm <br /> is the 25 yeer etorm. " <br /> 7, (e) CdeV � 1.27 x 0.05 + 0.98 x 0.9 + 1.22 x 0.20 � ��,34 " <br /> 3.47 <br /> _� �. r� <br /> (b) Qo - - - . �1'S cfs <br /> 3.47 x 0.34 . <br /> zg.ti , y�, <br /> (c) T � -25 + 2706 � � � <br /> 1.15 �4 min �� Z.IZ /� t. L � � <br /> (d) Vq � 4329 x 23.4 _ 40 x 1.15 x 23.4 �-�;9i7 cf/ecre imp.��•= f¢ <br /> 23.4 + 25 3 � q� j <br /> (e) yt � 1,O17 x 3.47 x 0.34 �-�-ef l� � O C �a��4-/ G � <br /> -'" �,� U / � `'` ��� � <br /> 8, e) D � 6.12 1.36 � 4 in. /� � ' <br /> Pa '(J' Q �t�'�r^�3�3�y. 'J � <br /> 9 <br /> (b) Tc 60 2 + 10 � 14.2 min. � �,� /„� <br /> r� <br /> Q . 0.34 x 1.86 x 3.47 - 2.19 cfa �� �,tJ��� �1/� <br /> e 10" riser will be required �� o� <br /> (c) Concrete outlet pipe e[ 0.76$ ��i y'a <br /> 12" outlet pipe � <br /> 3.15 cfs -����.���� <br /> 9. Storege :' S D. �� . <br /> : o�'P • ,,,,?Fis �. <br /> :�.��'�ee w • �p • <br /> Parking lot ponding 55 x 140 x 0.5 � 1,283 cf • P . �'� �.�5 <br /> 3 i ��' �n'',� $ „i <br /> i i; i <br /> 156 � OF ►2 " = lZ �f � -F ' '° ""� � <br /> S�. ���9TfPE�,, � s <br /> �� ff�. «...•• `+t� � <br /> � <br /> � 4 ' ti� MAl EMG �.• <br /> � ,3 • •••..,...- <br /> �- � z .�---� - Nb'� s�o� -�,, ,,�.� <br /> � D \ 3,'L o,. -�� e <br /> I <br /> (1> <br />