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SUMMARY OF
CLIMATE RESPONSIVE
DESIGN
BY RICHARD HYDE
Maram Krimly
Chapter one: Introduction
Climate responsive design is based on the way a building form and structure moderates the
climate for human good and well-being. It requires then both analytical and synthesis skills to
optimize the relationship between the site, climate, and briefing requirements.
Moderate and hot humid climates
Global climatic parameters
Climate responsive design uses climate as a form determinate. Here, three climate types are
defined-hot, humid, hot dry and moderate. This classification defines the global climatic
parameters in which the building is located.
Building context and microclimate
Integrating these basic strategies within the building
1.3 Climate responsive and environmental sustainable design
This means considering environmental principles such as:
1. Maintain and restore biodiversity.
2. Minimize the consumption of resources.
3. Maximize the health, safety and comfort of building users.
5. Increase awareness of environmental issues.
The ‘man-made universal climate’ and the natural climate
The self-evident feature of traditional architecture is that it uses the natural climate. The
modification of climate is through the building form, fabric and landscape. The
architectural consequence of air-conditioning is that building form and fabric makes a
barrier to the exterior and the connection to climate is lost.
Bioclimatic design and strategic design
The designer has to consider quire clearly the design decisions regarding the building
context.
Design issues and building elements
The examination and reflection of climate design follows a strategic framework through roof,
sections, walls, and floors.
Chapter 2: Warm Climates and the
building context
Climate is related to the atmospheric conditions of temperature, humidity,
wind, vegetation and light specific to a geographical location.
The nature of warm climates
In Winter the land will cool, causing high
pressure systems
In Summer it heats up causing areas of air to
rise giving creating low pressure systems
Climate investigation
It is made up of 3 stages:
Stage 1: Climatic meteorological data collection
Stage 2: Bioclimatic comparative analysis
Stage 3: selection of climate modification strategies
Building form and climate matching
there is a strong relationship between site,
climate and the elements of building in the
generation of the building form.
Building context and microclimate
Determine the modification to the macroclimatic
conditions. The factors affected mostly by the
site are as follows:
Temperature- radiation- airflow- evaporative
cooling.
The Urban context
Site data and analysis
Site strategies for the city and urban climate require careful consideration:
-Wind flow and localized building effects for summer cooling and winter discomfort
-Sun path, sun angles, site shading and shadow
-Lighting effects such as reflection and absorption
-Acoustic levels and air pollution
-Pedestrian and vehicular circulation
-Topography
-Vegetation
-Rain exposure and water run off
-Air temperature, location of hot spots and cool spots
The density of building increases substantially. Also the function of building shifts from domestic
scale buildings to non-domestic scale, multi-use building with a greater demand for air-
conditioning.
A number of feature effect this urban climate
At the macroscale , the fabric and spatial extent of urban context effects temperatures, humidity
wind and solar radiation.
At the microscale the design feature of the urban context such as density land coverage height
of building orientation and width of streets , the location of parks and open spaces.
Chapter 3: Climate Responsive
Design
Sustainable design:
This is attained by choosing wisely the materials
and building systems in terms of energy use
So the question most architects ask is, “how can we
solve the environmental issues in a way that it becomes
integrated with our design?”
A method of resolving this problem is to use an
environmental framework.
Environmental Framework:
-The geography of the site.
-The climate at the site and operational energy
demands.
-The potential for reuse or recycling of materials.
Climate responsive design strategies:
Ordering and Prioritizing Design Strategies:
Climate responsive design strategies and
tactics:
Example for sustainable and climate
responsive design:
Design approach:
Conjecture, analyze, and testing
Conceptual Building and Design Resolution
Interdisciplinary Design Teams
Design Assessment and building Modeling
Design Performance Measures:
Thermal Comfort
The main environmental factors affecting thermal comfort are as follows:
Air temperature
Radiation
Air velocity and air movement
Humidity
Energy performance
The form and shape can provide the design to reduce energy.
Ventilation Strategies
Main issues in designing the ventilation:
The exposure provided by the site
Function of ventilation in cooling the building
Types of ventilation:
-Natural ventilation:
-Mechanical ventilation and air-conditioning
Purpose:
Reduce the penetration of noise.
The use of filters to remove pollutants.
REASONS FOR JUSTIFYING THE INSTALATION OF AIR-CONDITIONING:
Design flexibility
Constant air quality through temperature and humidity control
Thermal comfort in high pollution density
PROBLEMS WITH DESIGNING AIR CONDITIONING:
Air-conditioning is related to health problems between environmental cause and health effect.
Lack of control of microclimate control the environment.
Large temperature differences between inside and outside can cause thermal stress and lack of com
Cool pool design
Advantages Issues
Create dampness, condensation and low
levels of ventilation
Occurrence of condensation
The energy cost is reduced Heat gain are from two sources
Reduction of cooling load
Provision of natural ventilation
Localized cooling:
It is actually used to provide comfort for small groups or
individuals.it is known as the use of ceiling fans as a way to
provide cooling and a common form of low energy system
used to provide cooling through air movement.
The management of the building is an important as the design
synthesis of the form and planning of the building if an integrated
solution to the problem of comfort in air-conditioned buildings is
to be achieved.
Chapter 4: Building Structure
structure responds to the conditions of climate through the effects of the environmental factors.
The following strategies are examined in warm climate buildings:
 the timber frame and diaphragm
 light steel frames
 skeletal frames
 the cantilevered column
 shade structures
Wind forces
An examination of many trees reveals the way this plants respond to the forces of wind, so the
response to site conditions is to either use a pile system or pad and raft.
Wind characteristics
Speed and movement are important aspects of wind that shape the design of buildings.
Design wind speed and return periods
Establishing the design wind speed is related to the following steps:
-selection of a return period for high wind frequencies
-determination of a basic standard wind speed corresponding to the selection of a return period
-modification of the standard speed to account for site specific conditions that will affect the
structure of the building.
Effects of wind forces on structural elements
There are three main effects of wind loads, which contribute to the failure of the building. these are:
 Racking, is the rotation of elements in the building.
 Overturning. The whole building rotates.
 Uplift. The uplift and pull-out forces on walls.
Light steel framing
Modern improvements have been made by reducing the plan depth and by making buildings a single
room depth to allow cross ventilation and providing openings in the walls and the roof to for airflow.
Through:
lightweight steel post and beam
knee brace at the joint
Cantilevered columns
the use of cantilevered columns provides spatial transparency in two directions and the
structural capacity of the foundation and column is increased.
Shade structures
The use of shade structure is an increasing structural type in warm climates.
These types of structure require careful design of the form of the structure and fabric.
Chapter 5: The Building Process
The method of building should reflect the climate and location of the project through the building
process.
Material classification
Building systems for climate can classified with regard to the density of materials and method of
fabrication.
Traditional ways of building
The connection between building system, climate and culture should be examined further with
some analysis of the rationale for the particular construction system.
For example the rise office called the Hill House
has been designed to achieve economic
efficiency as well as appropriate climatic
design. A concrete frame is used throughout the
building. Flat slabs were used where possible
which minimizes the floor-to-ceiling height, thus
reducing overall height of the building.
The cladding provides improved thermal
performance and water resistance.
Prefabrication of the primary steel frame and detailing of frame
Site interface
Disturbance to vegetation with large-scale site works can have anecological impact which is
not easily regenerated.
Early completion of frame and roof
Completion of cladding and fit-out
Appropriate technology
Where technology is used then it should be used in an appropriate manner which serves the
needs of addressing the physical laws of nature.
Chapter 6: The Roof
Definition
The roof design of buildings is a complex
problem of attempting to provide a form of
enclosure that resists the forces of nature.
The defensive element
The roof is consisting of three elements: first, the
roof surface facing the sky, second a structural
system, finally a ceiling system.
Roof dominant
versus wall
dominant, the
designer’s choice
Skillion, duo-pitch and vaults
These roof are for domestic buildings, they
can be used with or without a ceiling.
The parasol roof of Our
Lady of the Assumption,
Newcastle,.
Attic
Space found directly below the pitched roof
of a house or other buildings
Thermal dynamic in an attic roof;
back radiation from through roof
surface heats the attic air.
In summer, It is important
that the internal spaces are
well ventilated otherwise
the insulation can trap heat
at night. In winter, loss from
the in internal spaces is
reduced
Low inclination and trafficable
roofs
These types of roof are to facilitate
pedestrian traffic
Low inclination solid roof strategies:
Left: water pond
Middle: water spray
Shading roofs, surface-diffusers and surface
reflectors
In the roof-roof house by
Ken Yeang, concrete blades
are used to form a shade
over a concrete deck area.
A fiberglass shading roof over a
south facing semi-enclosed
courtyard, Brisbane, Queensland.
Use of light diffusing of membranes
to shade roof at Kingfisher Bay
Resort, Island.
Roof accessories
Habitat home, hyper roof used for
shading and to collect water and
distribute to different sides of the building
Gutter and rainwater
design The mapleton house, Richard
Leplastier: the water
collection system uses a
monopitch roof linked to a
large gutter, this discharge to
a collection tank, filtered and
then by gravity into a holding
Glen Murcutt, Museum, 1990:
box gutter system are used to
join pavilion, these have a large
width and depth and are open-
ended to accept large peak flows
thus avoiding blockage and
flooding.
Chapter 7: The External Wall
 The design of wall elements must regulate with the climatic forces of rain, sun and wind.
In warm climate heat is rejected while light and air are admitted provided the air can cool, and
the light can diffuse.
In cool climate light and heat are reserved while air is not required for cooling.
The flexible element:
External walls are the most complex elements to design because of the
number of relationships that require consideration. A useful concept for
defining the external wall is to think of it as the flexible element.
It is possible to examine the wall not as a single defensive layer but as a
series of layers or zones, for convenience called the climatic responsive
zones.
Climate responsive Zoning
The external wall or building skin is the line of enclosure, from the line of enclosure
different zones can be found which affect the climate response of the building. These
zones extend inwards and outwards from the line of enclosure. The inward zones
comprise the main active and passive zones.
Opening in roof extend the passive zone, through the provision of light and ventilation.
Façade of the Federal Law Courts, Brisbane
Thin skins
used to prevent heat gain.
Opaque elements: The wall works primarily to resist heat gain
The use of glass has become due to their shading efficiency. The type of glass commonly used:
 -heat absorbing.
 -heat reflecting.
Environmental effects of thin skins:
The environmental conditions inside a building are both internal air temperatures and radiant heat
gains from the outside.
 -air temperature
 -rate of air movement
 -radiation effects
Inclined and oriented skins:
Inclined walls promote ventilation and reduce sky glare in roof mezzanines.
Chapter 8: Floors and internal
walls
The objective for the designer is to position interior elements such as floors and
walls for maximum climatic effect.
An important factor is the relationship of floors to ground. The earth temperature
has an effect on the floor mostly those adjacent or connected to it.
Suspending the floor above the ground disconnects the floor from ground, heat is
still lost by ventilation.
The positioning element:
Materials are different in temperature. Stone, concrete, and ceramic feels cooler
to the touch than timber.
Ground-connected buildings:
This relationship occurs both within and
outside the building.
The use of a timber deck on the ground
plane reduces temperature around the
building
The Clare House at Buderim, Northern Queensland
uses a series of timber ground decks for the
entrance and to the northern side of the building.
Thermal Mass:
Floor can act as thermal sinks by Increasing the floor thickness and
density to absorb or remove heat from the thermal regime .
Floors and walls as heat sinks:
The element absorbs or lose heat when there is a temperature
gradient between the element and the surrounding air.
Floors as thermal diaphragms:
Floors that do not have thermal mass respond differently to temperature swings in the
building.
Perforated floors:
it allows the building to become a permeable
structure with ventilation through the floor.
Integrated floors and ceilings:
The distance between floors has a bearing on
the overall construction cost, the ventilation to
the floor and admittance o f daylight.
Chapter 9: The Veranda
The veranda was initially used in the Egyptian times. Its main climatic function was
to catch the cool breeze and to provide a position to a view or landscape.
Balconies, Bays And Decks
Balconies
Balconies are smaller and less enclosed spaces than
verandas. They’re usually uncovered spaces located in
upper floor adjacent to a window or door.
Decks
Decks are larger in size than the veranda and without a
roof. It doesn’t offer protection from sun and rain. . It
maximizes the access of the breeze, cooling the people
using it.
Bays
Bays are more enclosed spaces than the veranda. The
use of bays is an integration of the veranda into the
building.
Breezeway Veranda
A breezeway is a space lined up to catch prevailing
wind directions. Its normally an open passage through
a building or between buildings
Veranda Houses:
A veranda house is an advanced version of the shade
veranda.
external room and the sleep-out
The external room is when the veranda is separated
from the house and is integrated with the landscape
chapter 10: COURTYARDS
The main concern has become to provide natural light and ventilation and give comfort to the users.
Courtyard Types
There are three types of courtyards
full enclosed courtyards
It’s usually used in a deep plan terraced type buildings to
provide light and ventilation.
Semi Open Courtyards:
These kind of courtyards differ from the proceeding types in
the amount of enclosure
Semi enclosed courtyards:
These courtyards are formed from the interlocking of
buildings or by the addition of walls to provide privacy and
shade and enclose open spaces. Many houses are found in
French quarter of subtropical New Orleans.
Re entrant spaces
Light shafts
light shaft are glazed small apertures in a roof for the
admittance of natural light , and are useful in providing
natural light to spaces in a deep plan building .
Air Wells:
The air well is placed in the back third of the building to
provide ventilation to the kitchen, bathroom and bedrooms.
The roof section is left open to admit ventilation.
Chimneys
Chimneys are used as vertical and horizontal ducts for exhausting hot air and enhance air
movement.
Air shaft in buildings used to provide ventilation. A fan is usually attached to the shaft to
enhance efficiency by inducing air movement.
Re-entrant spaces enables increased light and
ventilation to habitable and service spaces. It’s
usually used in warm climates.

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ppweek7-160927175943.pdf

  • 1. SUMMARY OF CLIMATE RESPONSIVE DESIGN BY RICHARD HYDE Maram Krimly
  • 2. Chapter one: Introduction Climate responsive design is based on the way a building form and structure moderates the climate for human good and well-being. It requires then both analytical and synthesis skills to optimize the relationship between the site, climate, and briefing requirements. Moderate and hot humid climates Global climatic parameters Climate responsive design uses climate as a form determinate. Here, three climate types are defined-hot, humid, hot dry and moderate. This classification defines the global climatic parameters in which the building is located. Building context and microclimate Integrating these basic strategies within the building 1.3 Climate responsive and environmental sustainable design This means considering environmental principles such as: 1. Maintain and restore biodiversity. 2. Minimize the consumption of resources. 3. Maximize the health, safety and comfort of building users. 5. Increase awareness of environmental issues.
  • 3. The ‘man-made universal climate’ and the natural climate The self-evident feature of traditional architecture is that it uses the natural climate. The modification of climate is through the building form, fabric and landscape. The architectural consequence of air-conditioning is that building form and fabric makes a barrier to the exterior and the connection to climate is lost. Bioclimatic design and strategic design The designer has to consider quire clearly the design decisions regarding the building context. Design issues and building elements The examination and reflection of climate design follows a strategic framework through roof, sections, walls, and floors.
  • 4. Chapter 2: Warm Climates and the building context Climate is related to the atmospheric conditions of temperature, humidity, wind, vegetation and light specific to a geographical location. The nature of warm climates In Winter the land will cool, causing high pressure systems In Summer it heats up causing areas of air to rise giving creating low pressure systems Climate investigation It is made up of 3 stages: Stage 1: Climatic meteorological data collection Stage 2: Bioclimatic comparative analysis Stage 3: selection of climate modification strategies Building form and climate matching there is a strong relationship between site, climate and the elements of building in the generation of the building form. Building context and microclimate Determine the modification to the macroclimatic conditions. The factors affected mostly by the site are as follows: Temperature- radiation- airflow- evaporative cooling.
  • 5. The Urban context Site data and analysis Site strategies for the city and urban climate require careful consideration: -Wind flow and localized building effects for summer cooling and winter discomfort -Sun path, sun angles, site shading and shadow -Lighting effects such as reflection and absorption -Acoustic levels and air pollution -Pedestrian and vehicular circulation -Topography -Vegetation -Rain exposure and water run off -Air temperature, location of hot spots and cool spots The density of building increases substantially. Also the function of building shifts from domestic scale buildings to non-domestic scale, multi-use building with a greater demand for air- conditioning. A number of feature effect this urban climate At the macroscale , the fabric and spatial extent of urban context effects temperatures, humidity wind and solar radiation. At the microscale the design feature of the urban context such as density land coverage height of building orientation and width of streets , the location of parks and open spaces.
  • 6. Chapter 3: Climate Responsive Design Sustainable design: This is attained by choosing wisely the materials and building systems in terms of energy use So the question most architects ask is, “how can we solve the environmental issues in a way that it becomes integrated with our design?” A method of resolving this problem is to use an environmental framework. Environmental Framework: -The geography of the site. -The climate at the site and operational energy demands. -The potential for reuse or recycling of materials. Climate responsive design strategies: Ordering and Prioritizing Design Strategies: Climate responsive design strategies and tactics: Example for sustainable and climate responsive design:
  • 7. Design approach: Conjecture, analyze, and testing Conceptual Building and Design Resolution Interdisciplinary Design Teams Design Assessment and building Modeling Design Performance Measures: Thermal Comfort The main environmental factors affecting thermal comfort are as follows: Air temperature Radiation Air velocity and air movement Humidity Energy performance The form and shape can provide the design to reduce energy.
  • 8. Ventilation Strategies Main issues in designing the ventilation: The exposure provided by the site Function of ventilation in cooling the building Types of ventilation: -Natural ventilation: -Mechanical ventilation and air-conditioning Purpose: Reduce the penetration of noise. The use of filters to remove pollutants. REASONS FOR JUSTIFYING THE INSTALATION OF AIR-CONDITIONING: Design flexibility Constant air quality through temperature and humidity control Thermal comfort in high pollution density PROBLEMS WITH DESIGNING AIR CONDITIONING: Air-conditioning is related to health problems between environmental cause and health effect. Lack of control of microclimate control the environment. Large temperature differences between inside and outside can cause thermal stress and lack of com
  • 9. Cool pool design Advantages Issues Create dampness, condensation and low levels of ventilation Occurrence of condensation The energy cost is reduced Heat gain are from two sources Reduction of cooling load Provision of natural ventilation Localized cooling: It is actually used to provide comfort for small groups or individuals.it is known as the use of ceiling fans as a way to provide cooling and a common form of low energy system used to provide cooling through air movement. The management of the building is an important as the design synthesis of the form and planning of the building if an integrated solution to the problem of comfort in air-conditioned buildings is to be achieved.
  • 10. Chapter 4: Building Structure structure responds to the conditions of climate through the effects of the environmental factors. The following strategies are examined in warm climate buildings:  the timber frame and diaphragm  light steel frames  skeletal frames  the cantilevered column  shade structures Wind forces An examination of many trees reveals the way this plants respond to the forces of wind, so the response to site conditions is to either use a pile system or pad and raft. Wind characteristics Speed and movement are important aspects of wind that shape the design of buildings. Design wind speed and return periods Establishing the design wind speed is related to the following steps: -selection of a return period for high wind frequencies -determination of a basic standard wind speed corresponding to the selection of a return period -modification of the standard speed to account for site specific conditions that will affect the structure of the building.
  • 11. Effects of wind forces on structural elements There are three main effects of wind loads, which contribute to the failure of the building. these are:  Racking, is the rotation of elements in the building.  Overturning. The whole building rotates.  Uplift. The uplift and pull-out forces on walls. Light steel framing Modern improvements have been made by reducing the plan depth and by making buildings a single room depth to allow cross ventilation and providing openings in the walls and the roof to for airflow. Through: lightweight steel post and beam knee brace at the joint Cantilevered columns the use of cantilevered columns provides spatial transparency in two directions and the structural capacity of the foundation and column is increased. Shade structures The use of shade structure is an increasing structural type in warm climates. These types of structure require careful design of the form of the structure and fabric.
  • 12. Chapter 5: The Building Process The method of building should reflect the climate and location of the project through the building process. Material classification Building systems for climate can classified with regard to the density of materials and method of fabrication. Traditional ways of building The connection between building system, climate and culture should be examined further with some analysis of the rationale for the particular construction system. For example the rise office called the Hill House has been designed to achieve economic efficiency as well as appropriate climatic design. A concrete frame is used throughout the building. Flat slabs were used where possible which minimizes the floor-to-ceiling height, thus reducing overall height of the building. The cladding provides improved thermal performance and water resistance.
  • 13. Prefabrication of the primary steel frame and detailing of frame Site interface Disturbance to vegetation with large-scale site works can have anecological impact which is not easily regenerated. Early completion of frame and roof Completion of cladding and fit-out Appropriate technology Where technology is used then it should be used in an appropriate manner which serves the needs of addressing the physical laws of nature.
  • 14. Chapter 6: The Roof Definition The roof design of buildings is a complex problem of attempting to provide a form of enclosure that resists the forces of nature. The defensive element The roof is consisting of three elements: first, the roof surface facing the sky, second a structural system, finally a ceiling system. Roof dominant versus wall dominant, the designer’s choice Skillion, duo-pitch and vaults These roof are for domestic buildings, they can be used with or without a ceiling. The parasol roof of Our Lady of the Assumption, Newcastle,. Attic Space found directly below the pitched roof of a house or other buildings Thermal dynamic in an attic roof; back radiation from through roof surface heats the attic air. In summer, It is important that the internal spaces are well ventilated otherwise the insulation can trap heat at night. In winter, loss from the in internal spaces is reduced Low inclination and trafficable roofs These types of roof are to facilitate pedestrian traffic Low inclination solid roof strategies: Left: water pond Middle: water spray
  • 15. Shading roofs, surface-diffusers and surface reflectors In the roof-roof house by Ken Yeang, concrete blades are used to form a shade over a concrete deck area. A fiberglass shading roof over a south facing semi-enclosed courtyard, Brisbane, Queensland. Use of light diffusing of membranes to shade roof at Kingfisher Bay Resort, Island. Roof accessories Habitat home, hyper roof used for shading and to collect water and distribute to different sides of the building Gutter and rainwater design The mapleton house, Richard Leplastier: the water collection system uses a monopitch roof linked to a large gutter, this discharge to a collection tank, filtered and then by gravity into a holding Glen Murcutt, Museum, 1990: box gutter system are used to join pavilion, these have a large width and depth and are open- ended to accept large peak flows thus avoiding blockage and flooding.
  • 16. Chapter 7: The External Wall  The design of wall elements must regulate with the climatic forces of rain, sun and wind. In warm climate heat is rejected while light and air are admitted provided the air can cool, and the light can diffuse. In cool climate light and heat are reserved while air is not required for cooling. The flexible element: External walls are the most complex elements to design because of the number of relationships that require consideration. A useful concept for defining the external wall is to think of it as the flexible element. It is possible to examine the wall not as a single defensive layer but as a series of layers or zones, for convenience called the climatic responsive zones. Climate responsive Zoning The external wall or building skin is the line of enclosure, from the line of enclosure different zones can be found which affect the climate response of the building. These zones extend inwards and outwards from the line of enclosure. The inward zones comprise the main active and passive zones. Opening in roof extend the passive zone, through the provision of light and ventilation. Façade of the Federal Law Courts, Brisbane
  • 17. Thin skins used to prevent heat gain. Opaque elements: The wall works primarily to resist heat gain The use of glass has become due to their shading efficiency. The type of glass commonly used:  -heat absorbing.  -heat reflecting. Environmental effects of thin skins: The environmental conditions inside a building are both internal air temperatures and radiant heat gains from the outside.  -air temperature  -rate of air movement  -radiation effects Inclined and oriented skins: Inclined walls promote ventilation and reduce sky glare in roof mezzanines.
  • 18. Chapter 8: Floors and internal walls The objective for the designer is to position interior elements such as floors and walls for maximum climatic effect. An important factor is the relationship of floors to ground. The earth temperature has an effect on the floor mostly those adjacent or connected to it. Suspending the floor above the ground disconnects the floor from ground, heat is still lost by ventilation. The positioning element: Materials are different in temperature. Stone, concrete, and ceramic feels cooler to the touch than timber. Ground-connected buildings: This relationship occurs both within and outside the building. The use of a timber deck on the ground plane reduces temperature around the building The Clare House at Buderim, Northern Queensland uses a series of timber ground decks for the entrance and to the northern side of the building.
  • 19. Thermal Mass: Floor can act as thermal sinks by Increasing the floor thickness and density to absorb or remove heat from the thermal regime . Floors and walls as heat sinks: The element absorbs or lose heat when there is a temperature gradient between the element and the surrounding air. Floors as thermal diaphragms: Floors that do not have thermal mass respond differently to temperature swings in the building. Perforated floors: it allows the building to become a permeable structure with ventilation through the floor. Integrated floors and ceilings: The distance between floors has a bearing on the overall construction cost, the ventilation to the floor and admittance o f daylight.
  • 20. Chapter 9: The Veranda The veranda was initially used in the Egyptian times. Its main climatic function was to catch the cool breeze and to provide a position to a view or landscape. Balconies, Bays And Decks Balconies Balconies are smaller and less enclosed spaces than verandas. They’re usually uncovered spaces located in upper floor adjacent to a window or door. Decks Decks are larger in size than the veranda and without a roof. It doesn’t offer protection from sun and rain. . It maximizes the access of the breeze, cooling the people using it. Bays Bays are more enclosed spaces than the veranda. The use of bays is an integration of the veranda into the building. Breezeway Veranda A breezeway is a space lined up to catch prevailing wind directions. Its normally an open passage through a building or between buildings
  • 21. Veranda Houses: A veranda house is an advanced version of the shade veranda. external room and the sleep-out The external room is when the veranda is separated from the house and is integrated with the landscape
  • 22. chapter 10: COURTYARDS The main concern has become to provide natural light and ventilation and give comfort to the users. Courtyard Types There are three types of courtyards full enclosed courtyards It’s usually used in a deep plan terraced type buildings to provide light and ventilation. Semi Open Courtyards: These kind of courtyards differ from the proceeding types in the amount of enclosure Semi enclosed courtyards: These courtyards are formed from the interlocking of buildings or by the addition of walls to provide privacy and shade and enclose open spaces. Many houses are found in French quarter of subtropical New Orleans. Re entrant spaces Light shafts light shaft are glazed small apertures in a roof for the admittance of natural light , and are useful in providing natural light to spaces in a deep plan building . Air Wells: The air well is placed in the back third of the building to provide ventilation to the kitchen, bathroom and bedrooms. The roof section is left open to admit ventilation.
  • 23. Chimneys Chimneys are used as vertical and horizontal ducts for exhausting hot air and enhance air movement. Air shaft in buildings used to provide ventilation. A fan is usually attached to the shaft to enhance efficiency by inducing air movement. Re-entrant spaces enables increased light and ventilation to habitable and service spaces. It’s usually used in warm climates.