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V125BC [204]
3 years ago
15

A new 1.2-ha suburban residential development is to be drained by a storm sewer that connects to the municipal drainage system.

The development is considered mostly of single-family dwellings and is characterized by a Manning roughness coefficient for overland flow of 0.20, an average flow length of 200-ft, and an average slope of 0.7%. Local drainage regulations require the sewer pipe to be sized for the peak runoff resulting from a 10-yr rainfall event and a minimum time of concentration of 5-minutes. The following 10-yr IDF curve describes the site rainfall conditions expressing rainfall intensity, ???????? (inch/hour), as a function of storm duration, ???????????????? ( minutes): ????????=315.5????????????????0.81+ 6.19Estimate (a) the time of concentration for this site using kinematic-wave equation, and (b) the peak runoff rate to be handled by the storm sewe

Engineering
1 answer:
valentinak56 [21]3 years ago
6 0

Answer:

Time of concentration, t_d ⇒ 1280 min

Peak runoff rate, Q_p ⇒4.185 ff³/s

Explanation:

See detailed explanation

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Explanation:

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Code:

Please refer to the attached image.

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Explanation:

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