3: A circular sedimentation tank with central chamber of 4 m in diameter is designed to treat 75 m³/hr.raw water and the detention time is 2 hrs. Find: 1) Radius and depth of the tank 2) Weir loading inm³/m.d. 3) Diameter of the smallest settling particle is to be removed, if v, 1.2 m/hr, p=2 g/cc,P1 g/cc, and μ-1.3 c.p.4: Find the following:1) The settling velocity in water at 20 °C of spherical particle of 4.5 103 cm in diameter and aspecific gravity of 2.65 (viscosity at 20 °C is 1.009 *102 Poise).2) The rising velocity of the particle in 1, if its specific gravity is 0.8.3) The settling velocity at 20 °C of spherical particle of 0.12 cm in diameter.

3. Given: Q = 75 m3/hr detention time, t = 2 hrs Vs = 1.2 m/hr μ=1.3 c.p Central chamber = 4 m

3: A circular sedimentation tank with central chamber of 4 m in diameter is designed to treat 75 m³/hr. raw water and the detention time is 2 hrs. Find: 1) Radius and depth of the tank m³/m.d. 3) Diameter of the smallest settling particle is to be removed, if v, P1 g/cc, and u-1.3 c.p. 2) Weir loading in 1.2 m/hr, p, 2 g/cc,

3: A circular sedimentation tank with central chamber of 4 m in diameter is designed to treat 75 m³/hr. raw water and the detention time is 2 hrs. Find: 1) Radius and depth of the tank m³/m.d. 3) Diameter of the smallest settling particle is to be removed, if v, P1 g/cc, and u-1.3 c.p. 2) Weir loading in 1.2 m/hr, p, 2 g/cc,

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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Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.

Question

3: A circular sedimentation tank with central chamber of 4 m in diameter is designed to treat 75 m³/hr.
raw water and the detention time is 2 hrs. Find: 1) Radius and depth of the tank 2) Weir loading in
m³/m.d. 3) Diameter of the smallest settling particle is to be removed, if v, 1.2 m/hr, p=2 g/cc,
P1 g/cc, and μ-1.3 c.p.
4: Find the following:
1) The settling velocity in water at 20 °C of spherical particle of 4.5 103 cm in diameter and a
specific gravity of 2.65 (viscosity at 20 °C is 1.009 *102 Poise).
2) The rising velocity of the particle in 1, if its specific gravity is 0.8.
3) The settling velocity at 20 °C of spherical particle of 0.12 cm in diameter.

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