february 2011. chagrin loam proposed method of management french drain vertical “pit” drains ~2...

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February 2011

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Page 1: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

February 2011

Page 2: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches
Page 3: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

Chagrin Loam

Page 4: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

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

Page 5: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

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

Page 6: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

Flood Management Project Sites Key

----: French Drain----: Buildings

----: Vertical Pit Drain

(Picture Provided By Google Maps)

Page 7: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

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.

Page 8: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

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

Page 9: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches

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

Page 10: February 2011. Chagrin Loam Proposed Method of Management French Drain Vertical “Pit” Drains ~2 Feet Wide 10 Feet Deep 120 Feet Long 1 Foot 8 Inches