10-18-2018 Septic Design - Laserfiche WebLink

Home Browse Search

Q.45 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of 2.7 (minimum) (this must match the soil boring log) desired mound ratio 1 2.7 percent site slope (0-20% range) (% downslope site slope, if different than upslope) 18 inches, or 1.5 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains =inches of 0% soil credit, and F07inches of 50% soil credit. Giving a: 18 inch, or 1.5 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSIII 26.9 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 0.0 ft. upslope and sideslope 16.9 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 3:1 upslope ratio 10 ft. upslope berm 3:1 sideslope 11 ft. sideslope berms 3:1 downslope 20 ft. downslope berm Overall Dimensions: berm 1 10 1.5 _ 1.5 Limiting Condition 10.0 1 ft. wide by 19.0 ft. long Rock bed 40 ft. wide by 1 41 ft. long Mound footprint 4" inspection pipe r— 18" cover on top Clean sand lift Depth to Limiting Absorption Width berm 20 12" cover- on sides (6 loamy cap & 6" topsoil) 26.9 Note: For 0 to 1% slopes, Absorption Width is measured from the Bedequally in bath directions. For slopes >1%, Absorption Width is measured downhill from the upslope edge of the Bed. Rock Bed: 10.0 ft. by 19.0 ft, by inches under pipe, plus 20% gives yd' or *1.4= 10 ton Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 11.1 up + 16.8 downslope +$.7 ends + 11.6 under rock = 58 y& or *1.4= 81 ton plus 20% Loamy Cap: 36 ft. by 37 ft. 6" deep, plus 20% gives 70-1 yd' or *1.4= 42 ton Topsoil: 40 ft. by 41 ft. 6" deep, plus 20% gives 37 yd' or *1.4= 52 ton I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. er Signature Rusty Olson"s Soil Et Perc 810 Company 1n/1n/an1R uGenseff nate