Project 3 Presentation: 126 Phoenix Ave – CTI

Onix Castro

Project Overview & Agenda

At 126 Phoenix Avenue, the company CTI is experiencing challenges with the overflow from the adjacent pond flooding their property. This presentation will include an examination of the area, a solution for the pond overflow, and a cost estimate to resolve the issue.

Presentation Agenda: §  Map of area §  Method used §  Result Tables §  Cost Estimates §  Conclusion

Rational Method Equation

Q = ciA Q = Peak discharge, cfs c = Rational method runoff coefficient i = Rainfall intensity, inch/hour A: Drainage area, acre

Project Solution

Ground Cover Runoff Coefficient, c c Average

Asphalt Streets 0.70 – 0.95 0.825

Grass 0.05 – 0.35 0.425

Mulch/wood chips 0.10 - 0.25 0.175

Playground 0.20 - 0.35 0.275

Roof 0.75 – 0.95 0.85

Woodland 0.15 – 0.17 0.15

Recommended Ca Values Rational Method (Year)

1 2-10

1.1 10-25

1.2 25-50

1.25 50-100

Estimation for 10 years

Pipe

Q Values

Pipe 1 0.398493356

Pipe 2 0.024394577

Pipe 3 0.181609139

Pipe 4 0.135549527

Pond 1.539260984

Estimations for 20 years

Pipe

Q Values

Pipe 1 0.71596

Pipe 2 0.05531

Pipe 3 0.05531

Pipe 4 0.24245

Pond 2.99803

Maximum Quantity of Water

Pond

Area (sq. ft.)

Area (acres)

Volume(cft)

10 Years 10177.25

0.2336

10961.13

20 Years

10177.25

0.2336

72622.98

Cost Estimation

Stormwater Pre-const. cost Const. cost Total cost

Clean Pound $ 9000 $ 30000 $ 39000

Tree Planting $ 3000 $ 20000 $ 23000

Infiltration Sand $ 16700 $ 41750 $ 58450

Grass $ 2150 $ 21500 $ 23650

Underground Pipe $

Pavement $ 21780 $ 217800 $ 239580

Asphalt

Total cost

Cost Estimation (Pipes)

Area Total Feet Price $44.99 (8” X 20’)

Const. cost Total cost

Pipe 1 308.18 $13,864.83

Pipe 2 23.82 $1,071.17

Pipe 3 128.34 $5,774.18

Pipe 4 104.36 $4,695.03

Pond Pipes 857.2 $38,565.36

Total cost

Cost Estimation (Fill)

Area Depth (ft.) Gravel Needed

(FT/cyd)

Price (Dollars &

Cents) $34.50 per

ton

Const. cost Total cost

Part 1 8 13.37 $461.38

Part 2 7 81.37 $2,807.53

Part 3 6.5 86.46 $2,982.89

Part 4 6 18.95 $653.88

Total cost

Conclusion

Based on the method of equations, we conclude that

the Q-inflow is greater than the Q-outflow; therefore, we

propose to set up an underground system to resolve the

overflow in the area.