Lecture Two
Introduction to noise pollution (II)
&
Fundamentals of the atmosphere
Road Traffic Noise
Sources  power train noises and rolling noises
Power unit noises
Such as engine, air inlet,
exhaust, and cooling
system.
Rolling noises
Such as wind
Lecture Three
Atmospheric Dispersion
and Air Quality Monitoring
1
The atmosphere as a sink
Volcanoes and pollutants from other natural
sources
Pollutants from human activities
From the discovery of the utility of fire to the
present
Imperfect sink
Li
Lecture One
Noise Pollution
Introduction to noise pollution
Noise is unwanted sound because it:
can cause hearing loss
interferes speech communication
disturbs moods, relaxation, and privacy
Sound is a form of energy produced by a
vibrating object or an a
The Hong Kong Polytechnic University
Department of Civil and Environmental Engineering
Programme:
31473
Environment and Sustainable Development
Course:
CSE20207
Fluid Mechanics for ESD
Instructor:
Wing Hong Oynx WAI
Laboratory Report:
Pipe Friction
Experi
The Hong Kong Polytechnic University
Department of Civil and Environmental Engineering
Hydraulic Laboratory Experiment: Pipe Friction
Professor: Wai Wing Hong Onyx
Student Name: Chan Lok Yan (12097595D)
Hui Sze Ki (12098739D)
Ma Shuk Yuk (12140096D)
Subje
To: WAI Wing Hong Onyx
31069
CSE 202
Student name:Cheng
Date of experiment: 6/11/2007
Venturi Meter
Objective
The coefficient of discharge C of the Venturi Meter was determined.
Description of Apparatus
A Venturi is a device installed along a pipe for mea
The Hong Kong Polytechnic University
HD in Civil Engineering (31063)
HD in Building Technology and Management  Engineering (32072)
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hon
The Hong Kong Polytechnic University
THE HONG KONG POLYTECHNIC UNIVERSITY
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
2015/16 SEMESTER I EXAMINATION
_
Programme:
Higher Diploma in Civil Engineering (31363)
Subject:
Geology
Subject Code:
CSE10254
Se
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
The Hong Kong Polytechnic University
THE HONG KONG POLYTECHNIC UNIVERSITY
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
2014/15 SEMESTER I EXAMINATION
Programme:
Higher Diploma in Civil Engineering (31363)
Subject:
Geology
Subject Code:
CSE10254
Sess
Solution to Assignment 4
1.
Using these values, we can find the principal centroidal moments of inertia and the
angles to the corresponding principal axes are
2: using stress transformation equations
Using Mohrs circle
Tutorial 6
Plane Stress
Department of Civil &
Structural Engineering
11/04/2017
Y. Xia
Page 1
The transformation equations for the plane stress
x1 =
x + y
2
x1 y1 =
y1 =
+
x y
2
x y
2
x + y
2
cos 2 + xy sin 2
sin 2 + xy cos 2
x y
2
cos 2 xy sin 2
Tutorial 4: Section properties
11/04/2017
Y. Xia
Page 1
First moment and centroid of area
Coordinates of the centroid:
Y
x=
x
x
dA
y
y
X
Sy
A
xdA
=
dA
Sx
y=
=
A
A
ydA
dA
A
S y = x A; S x = yA
Second moment of area (moment of inertia)
I x = dI x = y dA
Tutorial 5
Normal Stress and Shear Stress in Beams
Department of Civil &
Structural Engineering
11/04/2017
Y. Xia
Page 1
The wood beam has a rectangular cross section in
the proportion shown. Determine its required
dimension b if the allowable bending str
Assignment 3
1. Determine the coordinates of the centroid of the area shown in Q1
Q1
2. Determine the smallest allowable diameter of the shaft which is subjected to the
concentrated forces. The sleeve bearings at A and B support only vertical forces, and
1. The state of stress at a point on a body is shown on the element. Using the
transformation equations for plane stresses to
(1) Determine the stress components acting on the inclined plane AB.
(2) Determine the principal stresses and the maximum shear s
Example 6: determine the internal forces of
member 16, 26 and 23 in the simply truss below.
6 kN
3
6 kN
4
6 kN
2
3 kN
3 kN
1
30
2m
30
2m
5
6
8m
Department
Department
of Civilof&Civil &
StructuralEngineering
Engineering
Environmental
13/02/2017
CL Kwan
The wood beam has a rectangular cross section in the proportion shown. Determine its
required dimension b if the allowable bending stress is allow = 10 MPa.
Shear center
A cross section in the shape of a semicircle has a constant thickness t, as shown in
Assignment 4
1. Determine the orientation of the principal centroidal axes and the magnitudes of the
principal centroidal moments of inertia for the Zsection shown in Q2. Height h = 200
mm, width b = 90 mm, and constant thickness t =15 mm.
2. The state o
Teaching Plan
Programme: Higher Diploma in Civil Engineering (Code: 31363)
Subject: CSE19100 Mechanics of Materials
Lecturer: CL Kwan and Y Xia
1. Subject Objectives
(1)
(2)
(3)
To enable students to acquire basic concepts of equilibrium, internal forces,
Section properties
1. Locate the centriod C of the crosssectional area for the Tbeam shown in Figure
Q1.
Figure Q1
Figure Q2
2. Determine Ix, Iy, and Ixy of the Zsection shown in Figure Q2.
3. Determine the moment of inertia of a circle of diameter d w

Route 10 North Lantau
to Yuen Long Highway
This presentation will consist
of 2 parts :
1.
Function of Route 10
2.
Comparison of Route 10 Tsing Lung Bridge
(R10TLB) Vs Tuen Mun Eastern Bypass
Tuen Mun Chek Lap Kok Link (TMEBTMCLKL)
2
CTS3 Assum
HIGHWAYS DEPARTMENT
ROAD NOTE 8
Subsoil Drainage for Road Pavements
Research & Development Division
RD/RN/008A
March 2001
CONTENTS
Page
No.
1.
INTRODUCTION
1
2.
BACKGROUND
1
3.
DESIGN CONSIDERATIONS
2
3.1
Minimum soil suction to maintain designed CBR of t
Design of Transport
Infrastructure
Introduction
Design of Transport Infrastructure ( Introduction )
Current transport infrastructure developments:
Comprehensive Transport Development Studeis1,2 and 3
Rail Development Studies 1 and 2
Port and Airport Deve
Subsoil Drainage System
Purposes:
prevent water penetration
acquire high soil strength
Moisture movements
through permeable surface
through edges and shoulders
upward movement of watertable
suction from watertable
Subsoil Drain Depth (RN 8)
S = P u
S: S