2001-P04628 - new septic system - Laserfiche WebLink

Home Browse Search

' 7;:" llUWNSLOPE DIKE WIDTH • . -1 If landslope is 2.9 percent or less,basal width includes both the upslope and downslope dike widths, 2. Calculate minimum mound size based on geometery: a. Determine depth of clean sand fill at upslope edge of rock layer: Separation 1,,5- feet b. Multiply rock layer width by landslope to determine drop 1 EG . in elevation;Slope Diff rrcrrce wena:. ,._1 I 0 x_3 %/ ÷ 100 = _3o feet c. Add depth of clean sand depth of clean sand for UpJ040191d16 _., separation at upslope edge (2a) to depth of rock layer to--i- 1 1614110439010. V . rock depth and the depth of cover to find the total mound -/oer 04e.16I,p,Wade height at upslope edge of rock layer; 78 • I ,S--- ft + 1 ft + 1 ft= 3 •S feet d. Enter table on page bottom with landslope and upslope dike ratio. Select dike multiplier of 3. 5 7 . e. Multiply dike multiplier by upslope mound height to get upslope dike width:3,57 x 3,5- = 13 feet f. Add the depth of slope difference (2b) to the upslope height to get the downslope height 3-S + • 3 = 3.2' feet g. Enter table on page E-18 with landslope and downslope dike ratio. Select dike multiplier of 4-1.5 4 . h. Multiply dike multiplier by downslope mound height to get downslope dike width: 4I S Li x 3,7 = 13 feet i. Mininmum'mound width is the sum of upslope dike width plus rock layer width plus downslope dike width; : ` •1:1 1 ,, 13 ft + /p ft + / S ft= feet Rock ik:Jwuiih`j i..'_ U 4;bikewtd-41:: j. Subtract the Minimum width G.i from the Absorption ° width F.4 to find the Additional Downslope required for '�R«k l.cngth Absorption /SZ-ft- /II ft= as feet Up,lelp6Dl0.Width :UPsbPeDike rlaih_ k. Add the Additional Downslope required for 4' _ p q o Absorption: `'�:�;:�• :,:: =:�•�° to the downslope dike width and recalulate the Total "`' '`''"' U"wl�°�'al� wed,' 1�`' Mound Width which is is the sum of upslope p pe dik e width plus rock layer width plus downslope dike width ft + ft + ' ' ft = feet rLL Total Length 13.5 1. Total mound length is the sum of upslope dike width plus rock layer length plus upslope dike width; 13 ft+ 67.$' ft + /3 ft = 93. feet Downslope UPs1ope 4 3:1 4:1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1 %slope 0 3.0 4.0 Si) 6.0 7.0 3.0 4.0 5.0 6.11 7.0 8.0 1 3.09 4.17 5.26 6.1E 7.53 191 3.85 4.76 5.66 6.54 7A1 2 3.19 4.35 5.56 6.82 8.14 2.10 3.70 434 5.36 6.14 6.90 3 3.30 4.54 . 5.811 7.32 8.86 2.75 337 4.35 5.1)1 5.74 6.45 4 3.41 4.76 6.25 7.89 9.72 2.66 3.45 4.17 4.83 5.46 6.06 5 333 5.00 6.67 8.57 11177 2.61 3.33 4.11$ 4.62 5.19 5.71 6 3.66 5.26 7.14 9.38 12.1)7 2.51 3.23 3.215 4.41 4.93 541 7 3.81 5.56 7.69 10.34 1373 2.48 3.12 1711 4.23 4.70 5.13 8 3.95 5.88 N.33 1154 1191 2.4I 111 157 4.115 4 09 4.33 9 4.11 6.25 9.o 1314 1697 2.36 2.94 3.45 3.9° 4.30 4.65 10 4.29 6.67 10.0 15.00 2.3.33 2.31 2.36 3.33 3.75 4.12 4.44 11 4.48 7.14 11.11 I7.65 .10.43 2.21. 2.73 3.23 3.61 3.95 4.26 12 4.69 7.69 12.50 21.43 43.75 2.21 771) 1 11 1!9 1 WI d I