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v 04.01.2020 <br />A.Rock Volume : (Rock Below Pipe + Rock to cover pipe (pipe outside dia + ~2 inch)) X Bed Length X Bed Width = Volume <br />(in + 3.0 ft X ft =ft3 <br />Divide ft3 by 27 ft3/yd3 to calculate cubic yards: ft <br />3 ÷ 27 =yd3 <br />Add 30% for constructability: yd3 X 1.3 =yd3 <br />B.Calculate Clean Sand Volume: <br />Volume Under Rock bed : Average Sand Depth x Media Width x Media Length = cubic feet <br />ft X ft X ft =ft3 <br />For a Mound on a slope from 0-1% <br />Volume from Length = ((Upslope Mound Height - 1) X Absorption Width Beyond Bed X Media Bed Length) <br />ft - 1)X Xft= <br />Volume from Width = ((Upslope Mound Height - 1) X Absorption Width Beyond Bed X Media Bed Width) <br />ft - 1)X Xft= <br />Total Clean Sand Volume : Volume from Length + Volume from Width + Volume Under Media <br />ft3 + ft <br />3 + ft <br />3 = ft <br />3 <br />For a Mound on a slope greater than 1% <br />Upslope Volume : ((Upslope Mound Height - 1 ) x 3 x Bed Length ) ÷ 2 = cubic feet <br />(( ft - 1) X ) ÷ 2 =ft3 <br />Downslope Volume : ((Downslope Height - 1) x Downslope Absorption Width x Media Length ) ÷ 2 = cubic feet <br />(( ft - 1) X ft X ) ÷ 2 =ft3 <br />Endslope Volume : (Downslope Mound Height - 1) x 3 x Media Width = cubic feet <br />( ft - 1 ) X ft =ft3 <br />Total Clean Sand Volume : Upslope Volume + Downslope Volume + Endslope Volume + Volume Under Media <br />ft3 + ft <br />3 + ft <br />3 + ft <br />3 =ft3 <br />Divide ft3 by 27 ft3/yd3 to calculate cubic yards: ft <br />3 ÷ 27 =yd3 <br />Add 30% for constructability: yd3 X 1.3 =yd3 <br />C.Calculate Sandy Berm Volume: <br />Total Berm Volume (approx): ((Avg. Mound Height - 0.5 ft topsoil) x Mound Width x Mound Length) ÷ 2 <br />(-)ft X ft X ) ÷ 2 =ft3 <br />Total Mound Volume - Clean Sand volume -Rock Volume = cubic feet <br />ft3 - ft <br />3 - ft <br />3 = ft <br />3 <br />Divide ft3 by 27 ft3/yd3 to calculate cubic yards: ft <br />3 ÷ 27 =yd3 <br />Add 30% for constructability: yd3 x 1.3 =yd3 <br />D.Calculate Topsoil Material Volume: Total Mound Width X Total Mound Length X .5 ft <br />ft X ft X 0.5 ft =ft3 <br />Divide ft3 by 27 ft3/yd3 to calculate cubic yards: ft <br />3 ÷ 27 =yd3 <br />Add 30% for constructability: yd3 x 1.3 =yd3 <br />Mound Materials Worksheet <br />5.0 <br />6 <br />3.8 3.0 ft X <br />Project ID: <br />50.0 <br />4.4 0.5 56.8 <br />5.0 3.0 ft X <br />210.0 1600.0 120.0 <br />5363.3 198.6 <br />198.6 258.2 <br />375.0 <br />375.0 13.9 <br />2.4 10.0 <br />13.9 <br />10.050.0 <br />50.0 1200.0 <br />in ) ÷ 12 X <br />56.8 80.0 2273.9 <br />18.1 <br />50.0 1600.0 <br />3130.0 <br />3130.0 115.9 <br />115.9 <br />120.0 <br />8868.3 3130.0 <br />80.0 <br />84.2 109.5 <br />150.7 <br />375.0 <br />210.0 <br />5363.3 <br />1200.0 <br />16.0 <br />2273.9 84.2 <br />8868.3 <br />10.0