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�. nsso�noN vv�orH <br /> 1. Abs tion width e uals abso►ption ratio(see Figure D-33)times rock layer width <br /> 2.67 x 10.0 ft = 27.0 ft <br /> G. MOUND SLOPE WIDTH&LENGTH(Less than or equal to 1%) <br /> 1. Absorption wi.d�h(F): 27.0 feet <br /> 2. Calculate minimum mound size <br /> a.Determine depth of clean sand at upslope edge of rock layer=3 feet minus distance�restricting layer(C1) � <br /> 3.0 ft - 1.0 ft= 2.0 feet <br /> b.Mound height at the upslope edge of rock layer=depth of clean sand for separation(G2a) <br /> plus depth of rock layer(1 foot)plus depth of cover(1 foot) <br /> 2.0 ft+1ft+1ft= 4.0 feet <br /> c.Berm width=upslope mound height(�2b)times 4(4 is recommended,but could be 3-12) <br /> 4.0 x 4= 16.0 feet <br /> d.The total landscape width is the sum of berm(G2c)width plus rock layer width(D2)plus berm width(G2c) <br /> 16.0 feet+ 10.0 feet+ 16.0 feet= 42.0 feet <br /> e.Additional width necessary for absorption=the absorption width(F)minus the landscape width(G2d) <br /> 27.0 feet- 42.0 feet= -15.0 feet <br /> ifnumberis negative(<O)skip M g <br /> f.Final berm width=addition�width(G2e)plus the benn wridth(G2c) <br /> -15 feet+ 16 feet = 1 feet <br /> g.Total mound width is the sum of berm width(GZf or G2c)plus rock layer width(D2) <br /> plus berm width(G2f or G2c) <br /> 16.0 ft+ 10.0 ft+ 16.0 ft= 42.0 feet <br /> h.Total mound length is the sum of berm(G2f or G2c]plus rock layer length(D3)plus berm(G2f or G2c) <br /> 16.0 ft+ 75.0 ft+ 16.0 ft= 107.0 feet <br /> i.Setbacks from the rockbed are calculated as follows:the absorption width(F�minus the rock bed width <br /> (D2)divided by 2: ( 27.0 feet - 10.0 feet)/ 2 = 8.5 feet <br /> LAYOUT <br /> 1. Select an appropriate scale;one inch= 50 feet <br /> 2. Show pertinent property boundaries,righis-of-way,easements <br /> 3. Show location of house,garage,driveway,and all other improvements,existing or propased. <br /> 4. Show location and layout of sewage treatrnent <br /> 1 hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws <br /> ������`'� (signature �Z� licen '' S� � <br /> ) � ( se#) .� /� (date) <br />