L1 Introduction on building services.pptx

INTRODUCTION TO
BUILDING SERVICES
CVNG
3022

OBJECTIVES
1. Describe Building Services with reference
to its different components
2. Identify the global environmental issues
3. Explain a building envelope (includes
illustrations)
4. Explain the difference between natural
environment and built environment
5.Relate Sustainability to a building envelope
6. Describe features of a green building
7. Explain Life Cycle Analysis
8.Explain passive cooling

BUILDING SERVICES
Systems installed in buildings to make comfortable, functional, efficient
and safe environment
Everything inside a building which makes it safe and comfortable to be
in comes under the title of 'Building services’.
A building must do what it was designed to do - not just provide shelter
but also be an environment where people can live, work , innovate

Building services are what makes a building come to life. They include:
energy supply - gas , electricity and renewable sources
Cooling/ heating and ventilating
water , drainage and plumbing
daylighting and artificial lighting
escalators and lifts
ventilation and refrigeration
harnessing solar, wind and biomass energy
communications, telephones and IT networks
security and alarm systems
fire detection and protection
facade engineering
THESE SERVICES ARE MAINTAINED BY THE BUILDING SERVICES
ENGINEER

Cooling Heating
and Ventilation of a
Building
 Circulation of air throughout a
building
 The ventilation or the heating,
ventilating, and air-conditioning
(HVAC) system of a building supplies
and removes air naturally (windows)
and/or mechanically to and from a
space.

Water, Drainage and Plumbing
in a Building
Drainage is the system or process by
which water or other liquids are drained
from a place
Plumbing uses pipes, valves, plumbing
fixtures, tanks, and other apparatuses to
convey fluids
Adequate potable water supply system; a
safe, adequate drainage system; and
ample fixtures and equipment.

Daylighting and
Artificial Lighting
Daylighting (Natural Lighting) -
Produced by the sun's radiation,
which provides heat and colour
Artificial light - visible light generated by
artificial light sources and usually also
contains some IR and UV radiation

Escalators and
lifts
Carry passengers and freight up and down
a building; escalators are moving
staircases from one story of a building to
the next; and moving sidewalks carry
people horizontally or at a slight incline.

Refrigeration in a building
In heating, ventilation and air conditioning systems, chiller units use
refrigerants to produce chilled water that is piped to air handling
units (or fan coil units) where it is used to cool the air that ventilates
the building.

Use of renewable energy systems in the
building (Solar, wind and Biomass)
Facility in the
Building to utilize
solar energy, wind
energy and biomass
energy

Communication
Systems in a
building
Wide range of voice, information
processing, and signaling systems
used to connect users together or to
share information
Categories of communications
systems in commercial buildings
need structured cabling systems
These are: Phone systems. Data
systems

Security and Alarm
Systems
System designed
to detect
intrusion, such as
unauthorized
entry, into a
building or other
areas such as a
home or school

Fire
Detection
and
Protection
Fire detection and protection
system is required for the
following reasons: To detect
fire in the area during the
initial stage. To alert
occupants, so that they escape
the building safely.

Façade engineering
Art and science of
resolving aesthetic,
environmental and
structural issues to
achieve the effective
enclosure of buildings

EXERCISE 1
Students should imagine that they are in the most fabulous
building in the world.
Now take away the lighting, heating and ventilation, the lifts and
escalators, acoustics, plumbing, power supply and energy
management systems, the security and safety systems.

ANSWER
All students must identify these problems
They are left with a COLD/HOT building,
dark,
Unhealthy SICK BUILDING SYNDROME
Foul smell
Noisy
Vulnerable to bandits
uninhabitable shell

BUILDING SERVICES
ENGINEERS
Building services engineers are
responsible for designing, installing and
maintaining them.
Imagine the heating control and air
filtration systems you'd need in intensive
care unit in Hospitals and laboratory.
How to control heat and humidity in
material laboratory
What about security systems at the
banks?
Lighting the Stadiums, roads,
classrooms, homes offices?
Coping with a power cut i.e. during the
examination session

Global Environmental
Issues
•Deforestation.
•Desertification.
•Rapid Population Growth.
•Food Production and Equitable
Distribution.
•Global Warming.
•Depletion of the Atmospheric Ozone.
•Acid Precipitation and Air Pollution.
•Ocean Pollution.

Most Challenging Global Issue
One of the biggest environmental problems today is outdoor air
pollution. Data from the World Health Organization (WHO)
shows that an estimated 4.2 to 7 million people die from air
pollution worldwide every year and that nine out of 10 people
breathe air that contains high levels of pollutants

Natural environment
 Natural environment includes all living and non-living things that
occur naturally on Earth. This encompasses ecosystems, landscapes,
and natural resources.
Examples of the natural environment: Forests, rivers, mountains,
oceans, and wildlife.
 Natural environment is formed by natural processes without human
intervention. It includes biodiversity and natural cycles like the water
cycle and carbon cycle.

Built Environment
The built environment consists of human-made surroundings that
provide the setting for human activity. This includes buildings,
infrastructure, and other physical modifications to the natural
landscape.
Examples of the built environment: Cities, roads, bridges, houses,
and parks.
Built environment is created or significantly altered by humans. It
includes structures and spaces

BUILT ENVIRONMENT
Refers to all aspects of our lives,
encompassing the buildings we live in,
the distribution systems that provide us
with water and electricity, and the
roads, bridges, and transportation
systems we use to get from place to
place.

NATURAL, RESOURCE AND BUILT ENVIRONMENT

Building Sustainability
Harmony with the natural
environment, considering the
social, environmental and
economic aspects of
decisions, and reducing our
footprint through a less
energy, water and material
intensive lifestyle

Features of a Sustainable Building
Energy Efficiency
Renewable Energy Generation
Water Efficiency
Stormwater Management.
Superior Indoor Environment

Importance of a Sustainable building
Improved health for the people who use the buildings, it also has
been shown to improve workers productivity during construction
thanks to better surroundings, work environments, and noise
protection

BUILDING
SUSTAINABILITY
Building sustainability has been a
major issue for building professionals
and building industry just as demand
for sustainable building continues to
increase
The assessment of building
sustainability using existing building
performance assessment methods/tools
such as LEED BREEAM

Building Envelope
Building components that separate the indoors
from the outdoors. Building envelopes include the
exterior walls, foundations, roof, windows and
doors
Refers to the facade and roof and consists of the
thermal, weather and air barriers separating
building interiors from the outdoor environment
Isolates the Indoor environment and the outdoor
environment

Elements of a Building Envelope
Foundation.
Wall assemblies
Roofing systems
Doors and doorways
Other components, such as chimneys, vents, and windows

Building
envelopes
have:
Crucial role in reducing
the cooling demand of
the building by
regulating the indoor
thermal behavior of
the building

Factors
influencing
the
sustainable
performance
of building
Building envelope is the
interface between the
interior of the building and
the outdoor environment
It comprises the foundation,
walls, doors, windows, roof,
floor slabs and foundation
34

Factors influencing a sustainable
building

FACTORS INFLUENCING THE SUSTAINABLE
PERFORMANCE OF A BUILDING

CATEGORIES AND SUSTAINABILITY INDICATORS

EXERCISE 2
Sketch your home
(1) Show the building envelope
(2) show the factors influencing the building sustainability
(3) Read a presentation on building sustainability
https://www.youtube.com/watch?v=z2qEeBV14a8
https://www.youtube.com/watch?v=9zY2oqMH-Cc

SUSTAINABLE DIMENSIONS AND
CATEGORIES - SELF READING

Environmental Sustainability
of Housing

Economic
Sustainability
of Buildings
PROVISION OF THE BASIS OF HUMAN
WELFARE,
LABOUR PRODUCTIVITY AND MOBILITY
Serves as an important part of household
and public expenditure; since if it is
unaffordable, numerous socio-economic
problems can be created
Important component of economic flows
of
natural resources and energy

Social Sustainability
of Buildings
Places where people want to live
and work, now and in future.
They meet the diverse needs of
existing and future residents, are
sensitive to their environment,
and contribute to a high quality of
life.

CRITERIA FOR ASSESSMENT
OF A BUILDING FOR
SUSTAINABILITY
Usage of land,
materials, energy and
water
Waste Reduction
Strategies
Community Benefits

FEATURES OF GREEN
BUILDING
Energy Efficient /Energy Saving
Utilisation of Sustainable Materials
Indoor environmental air quality.
The selection and use of materials that
are non-toxic, ethical, with sustainable.
consideration of the environment
Water Conservation – Use of
strategies and technologies to minimize
water usage and reduce wastage

DIFFERENCE BETWEEN GREEN BUILDING AND SUSTAINABLE
BUILDING

LIFE CYCLE ANALYSIS
Overall impact that a
particular human
product has on the
environment in its entire
existence.

LIFE CYCLE
ANALYSIS EXAMINES
Human impacts
Energy Usage
Materials Usage
Waste Generation
At each stage of a product’s life cycle from
cradle (the inception of the idea, Design) to
the grave (disposal).

STAGES IN LIFE
CYCLE ANALYSIS
Raw material extraction
Manufacturing
Packaging and transportation
Usage of Material
End of life
(At each of these stages, there are inputs
and outputs, flow-throughs, value losses, and
potential gains)

Cradle to Grave
Analysis
• Due to the complexity of material
applications, assessment of the
environmental impact associated with
the production of a material usually
accounts for stages from extraction up
to the manufacturing of semi-finished
products
Eg plain wood or aluminium

Life Cycle Analysis
examines
• Human impacts
• Energy Usage
• Materials Usage
• Waste Generation
At each stage of a product’s life cycle
from cradle (the inception of the
idea, Design) to the grave (disposal).

DEFINITIONS OF SUSTAINABILITY
SELF READING
The A S C E (2008, 157) defines sustainable
development as:
The challenge of meeting human needs for natural
resources, industrial products, energy, food,
transportation, shelter, and effective waste management
while
Conserving and protecting environmental quality and
the natural resource base essential for future
development.”

Passive cooling
Passive cooling is a building design
approach that focuses on heat gain
control and heat dissipation in a building
in order to improve the indoor thermal
comfort with low or no energy
consumption. This approach works either
by preventing heat from entering the
interior or by removing heat from the
building.

PURPOSE OF PASSIVE
COOLING
Passive cooling works by: using shade
and insulation to keep heat out of
your home in summer. using heat-
storing materials such as concrete to
absorb heat. using breeze and air
movement inside your home to keep you
cool

L1 Introduction on building services.pptx

More Related Content

Similar to L1 Introduction on building services.pptx

Recently uploaded

L1 Introduction on building services.pptx