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.