february 2011. chagrin loam proposed method of management french drain vertical “pit” drains ~2...
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February 2011
Chagrin Loam
Proposed Method of ManagementFrench Drain Vertical “Pit” Drains
~2 Feet Wide10 Feet Deep
120 Feet Long1 Foot 8 Inches Wide10 Inches Deep4” Corrugated
Perforated Pipe Near Bottom of Ditch
Chagrin Loam Stats Cd—Chagrin loam, rarely flooded Map Unit Setting Elevation: 320 to 1,040 feet Mean annual precipitation: 32 to 48 inches Mean annual air temperature: 48 to 55
degrees F Frost-free period: 133 to 205 days Map Unit Composition Chagrin and similar soils: 90 percent Minor components: 10 percent Description of Chagrin Setting Landform: Flood plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Fine-loamy alluvium
Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80
inches Drainage class: Well drained Capacity of the most limiting layer to transmit
water (Ksat): Moderately high to high (0.60 to 2.00
in/hr) Depth to water table: About 48 to 72 inches Frequency of flooding: Rare Frequency of ponding: None Available water capacity: High (about 9.9
inches) Typical profile 0 to 9 inches: Loam 9 to 35 inches: Sandy clay loam 35 to 60 inches: Stratified fine sand to silt loam Minor Components Orrville Percent of map unit: 10 percent Landform: Oxbows Data Source Information Soil Survey Area: Athens County, Ohio Survey Area Data: Version 13, Feb 9, 2010
Flood Management Project Sites Key
----: French Drain----: Buildings
----: Vertical Pit Drain
(Picture Provided By Google Maps)
Estimated Work ScheduleTime Step
Pre-Project Construction Order Materials. If materials are coming from a distance greater than ~20 miles, materials should be on site before project construction begins.
Project Construction Start 10:00 A.M
Gravel Shipped to Site, if not beforehand.
10:00 A.M Ditch and pits starts being dug.
~11:00 A.M Pits filled with gravel, ditch layered with initial gravel.
12:00 Noon Ditch completed and bottom layer of gravel is laid. Begin laying the pipe.
1:00 P.M to 2:00 P.M Ditch filled the rest of the way with gravel. Turf applied where wanted.
Cost AssessmentItem Estimated Cost
Perforated Corrugated Pipe $135 for 175’
¾” or 57ths Gravel (Ditch) $180 total at $12 per ton
Ohio Minimum Wage $29.60 per person per hour (estimate 4 hours with one laborer with proper equipment
Sub Total: $345
¾” or 57ths Gravel (Pit) ~$24 per pit at 10’ deep by 2’ wide, Estimate 2 pits
Total: $393
Total Estimated Cost for Repairs
$10,000 per Building, minimum.
Reasons:1.Structural Damages (I.E. rotten wood)
2.Foundation Damages3.Specialized Equipment4.Specialized Personnel