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Cover i'
<br /> • C• MOUND SLOPE WIDTH & LENGTH �
<br /> Landslope:_x
<br /> (landslope 1% or more) \ �. ._ .. , s'°���d�_._
<br /> 1 i�rtock r •;.o,: .
<br /> 1. Subtract rock layer width from absorption width ""n5and_
<br /> to obtain minimum downslope width "°��'�� �� 6'Topsc;� .
<br /> �;m.e,����, I .
<br /> ,�
<br /> ft-� ft = l D feet
<br /> Upsbpe Width DoM'nslope lYdlh
<br /> 2. Calculate minimum mound size -
<br /> tt�ck w,au,
<br /> a. Determine depth of clean sand fill at �
<br /> upslope edge of rock layer: �bso�Pno�w,d�h I
<br /> 1 ,
<br /> Separation 3' -� ft = � feet
<br /> b. Add depth of clean sand for separation (2a)
<br /> at upslope edge, depth of rock layer (1 foot) to SLOPE MULTIPLIER TABLE
<br /> depth of cover (1 foot) to find the mound height `'"d UPSLOPE DOWNSLOPE
<br /> Slo , multipliers for vacious multipliea for various
<br /> at the upslope edge of rock layer; '"� S��r��,<1O5 51ope ntios
<br /> !�3 ft + lft + lft = -33 feet 3=� 4:1 S:l 6:1 7:1 8:1 3:] 9:7 S:1 6:1 �.�
<br /> c. Enter table with landslope and u slope ratio. ° '.o +.o s.o 6.0 �.o e.o 3.0 4.o S.o 6.0 ,.o
<br /> Select berm multiplier of_ .S 1 2•91 3.85 4.76 5.66 6.54 7.41 3.09 �.17 5.26 6.38 7.53
<br /> d. Multiply berm multiplier by upslope mound 2 2�� 3.�0 5.59 5.36 6.14 6.90 3.19 4.35 5.56 6.82 6.19
<br /> hei ht to find upslope width: ' Z's 3-s, +.�; S.oB 5.�9 6.45 ,.�o �.� S_� ,.32 8.�
<br /> 3•�' 3•5 4 2-68 3.45 4.77 4.89 5.46 6.D6 3.41 4.76 6.2i 7.89 9.92
<br /> X �_ ��g feet
<br /> 5 Z61 333 4.00 4.62 5.19 5.77 3.53 i.00 6.67 8.57 ]0.77
<br /> e. Multiply rock layer width b
<br /> Y 6 2.54 3.23 3.85 4.41 4.93 5.41 3.66 i.26 7.1� 9.38 12.07
<br /> landslope to determine drop in elevation; 7 2.48 3.0 ,.�0 4.2, ,.,o 5.1, ,.80 ;.56 �.69 �o.� ,,.,,
<br /> �X�%= 100 = !�_ feet 8 � i42 3.03 3S7 4.Oi 4.49 4.88 3.95 5.88 833 ll.i4 15.91
<br /> f. Add depth of clean sand for slope difference 9 2_36 294 3.q5 3.90 4_30 4.65 4.11 6.25 9.09 13.61 18.92
<br /> (2e) at downslope rock edge, to the mound lo z3� 2.86 3.33 3.�s 4.,2 4.� 4.z, 6.67 ,o.00 �5.�0 �,�
<br /> height at the upslope edge of rock layer (2b) 11 Z26 Z�B 3.� 3.6� 3.95 4.26 4.48 ,.,4 1,.1, ,,.65 �:
<br /> to find the downslope mound height� 12 2.21 270 ;,12 3.99 3.80 9.08 4.69 7.69 12.50 21.43 43.75
<br /> 3.3 ft + •3 ft = 3.�feet s�N� �
<br /> g. Enter table with landslope and downslope ratio. Select �� x � ¢S = �p 8�
<br /> downslope multiplier of 4:S� �3�-
<br /> h. Multiply downslope multiplier by downslope mound height to 7s X��'8 k Z- 3 -
<br /> get downslope width: 7S X !6�3 k Z.��?_��
<br /> .3.� x�S� �3 feet ¢7I2-. �Z7 ��Cy�-
<br /> i. Com pare the values of s t e p G.l �D . ,
<br /> and Step G.2h /6.3 ,
<br /> Select the greater of the two values as the UPsi�w�act,
<br /> downslope width: /(0•,3 feet
<br /> j. Total mound width is the sum of � 0 4°:'v� � - ° °° p .�.
<br /> M Up��Width 4o�e oP�t RockBed ?d,aoo�t, a., U slo Width
<br /> upslope (G.2d) width plus rock layer -� 9�e�`o;oaoa`. W�dth /d ?;:0000�:,i;, -�-�
<br /> �p . . .9QdG1�0:0°-:Qa�.'O�D�P� U^.;Qp:PQQ.o. o.
<br /> width(D.2)plus downslope width(G.2i); 3 '�° :°b � o oa. D��oa a ,, .;
<br /> <<'� ft + /(`� ft + �6•,3 ft =38'• / feet � Downslope Width�
<br /> F' Absorption Width �•3
<br /> k. Total mound length is the sum of upslope ��
<br /> width (G.2d) plus rock layer length (D.3)
<br /> plus upslope width (G.2d);
<br /> �ft +�.� ft + � ft - � feet
<br /> Total Length��_
<br /> Fina1 Dimensions:
<br /> 3�, � X �8. � _ -
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