07-29-2021 Septic Design - Laserfiche WebLink

Home Browse Search

3) 0.45 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 4) 11 percent site slope (0-20% range) 11 (% downslope site slope, if different than upslope) s) 16 inches, or 1.3 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 =inches of 50% soil credit. Giving, a: 6) 20 inch, or 1.7 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSHI 7) 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 8) 0.0 ft. upslope and sideslope 17.0 ft. downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 9) 4: i upslope ratio 10 ft. upslope berm o) 3:1 sideslope 14 ft. sideslope berms 1) 4:1 downslope 30 ft. downslope berm 3.75-1 Overall Dimensions: 10.0 ft. wide by 63.0 ft. long Rock bed 50 ft. wide by 1 91 ft. long Mound footprint 4" inspection pipe 18" cover on top Ll slo e herrn 1p Downslope berm 30 12" Cover on sides (6" loamy cap &. 6" topsoil) 1.7 rDep�th sand lift _ 1.3 to Limiting dition _ Absr tion YVid th 27.0 -- Note: For 0 to 1% slopes, Absorption Width is measured from the Bedequally in both directions. For slopes >1%, Absorption Wrdtfr is measured downhill from the upslope edge of the Bed. Rock Bed: 10.0 ft. by 63.0 ft. by inches under pipe, plus 20% gives =yd' or *1.4= 29 ton Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 30.4 up + 155.7 downslope + 15.8 ends + 51.7 under rock = DEW or *1.4= 426 ton plus 20% Loamy Cap: 46 ft. by 87 ft. 6" deep, plus 20% gives 89 yd' or *1.4= 125 ton Topsoil: 50 ft. by 91 ft. 6" deep, plus 20% gives102 yd' or *1.4= 143 ton I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson's Soil it Perc 810 3/10/2021 Designer Signature Company License# Date