20.27 Consider a stack that emits a nonreactive pollutant at the rate of 55 g/s. The stack is 85 m tall, and is located in a rural area, surrounded for many miles by open pasture land. The plume rise is 35 m. The sky is cloudy on a November afternoon, and the wind speed (measured at 10 m height) is 6.0 m/s. (a) Esti- mate the downwind, centerline, ground-level concentration at a downwind distance of 5000 meters from this stack. Give your answer in µg/m³. (b) Also, estimate the ground-level concentra- tion at a cross-wind distance of 200 m, but still at the same downwind distance of 5000 m. Give your answer in µg/m³.

20.27 Consider a stack that emits a nonreactive pollutant at the rate of 55 g/s. The stack is 85 m tall, and is located in a rural area, surrounded for many miles by open pasture land. The plume rise is 35 m. The sky is cloudy on a November afternoon, and the wind speed (measured at 10 m height) is 6.0 m/s. (a) Esti- mate the downwind, centerline, ground-level concentration at a downwind distance of 5000 meters from this stack. Give your answer in µg/m³. (b) Also, estimate the ground-level concentra- tion at a cross-wind distance of 200 m, but still at the same downwind distance of 5000 m. Give your answer in µg/m³.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

20.27 Consider a stack that emits a nonreactive pollutant at the rate
of 55 g/s. The stack is 85 m tall, and is located in a rural area,
surrounded for many miles by open pasture land. The plume
rise is 35 m. The sky is cloudy on a November afternoon, and
the wind speed (measured at 10 m height) is 6.0 m/s. (a) Esti-
mate the downwind, centerline, ground-level concentration at a
downwind distance of 5000 meters from this stack. Give your
answer in µg/m³. (b) Also, estimate the ground-level concentra-
tion at a cross-wind distance of 200 m, but still at the same
downwind distance of 5000 m. Give your answer in µg/m³.

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