the ppt describes the natural ventilation to be maintained in the house

2. IMPORTANCE OF VENTILATION
IN A BUILDING

3. IMPORTANCE OF VENTILATION
• Ventilation is the movement of air within building
and between the building and the outdoors
• Control of ventilation is most important concerns
in building design
• THERE ARE DIFFERENT TYPES OF
VENTILATION
1. Cross Ventilation
2. Single Sided Ventilation
3. Stack Ventilation

4. FUNCTIONS OF VENTILATION
The main functions of ventilation is
1. Supply Fresh Air
2. Convective Cooling
3. Physiological cooling

5. NATURAL VENTILATION
 Natural ventilation is the process of supplying and removing air through a space by
natural means.
 it can be achieved with openable windows or vents.
 Natural ventilation and air movement can be simply achieved by structural controls
as it does not depend on any forms of external energy supply or mechanical
installation

6. WHY NATURAL VENTILATION?
 • THE PURPOSE OF PROVIDING NATURAL VENTILATION IS TO ACHIEVE
MAXIMUM HUMAN COMFORT IN INDOOR BY UTILIZING MAXIMUM NATURAL
ENERGY AND RESOURCES.

7. CROSS VENTILATION

8.  Pairing a large outlet with small inlet increase incoming wind speed
OPENING SIZE

11. WINDOWS
 Windows are the most common way to admit day
light in to a space
 Their vertical orientation means that they
selectively admit sunlight & diffuse day light at
different times of the day & year
 Ways to improve amount of light available
from a window
 Place window close to a light colored wall.
 Slant the sides of window openings so the inner
opening of the window is larger than outer
opening.
 Use large light colored window sill to project light
into the room

12. DAY LIGHTING
 Modern building technologies such as air conditioning and electric lighting have
allowed us to take the concept of sheltering from the elements to the extremes.
 During the 1960s and 70s, many buildings were designed to have no connection
with the outside at all. After millennia of struggle, man had finally won over nature.
 It turned out that living and working in sealed boxes is not at all what people
need or want. Airconditioned and artificially lit buildings are not only unpleasant
to live and work in, they also make us sick.
 Over the past few decades, the trend has been to allow natural light and ventilation
into the building, utilizing it for saving energy and for enhancing the indoor
environment
 Daylighting is the art and science of allowing natural light into buildings.

13. EFFECTS OF LOW ROOF IN BATHROOM
 Generally people nowadays are preferring low roof so that they can store some
equipment's on the roof.
 But preferring low roof is not a good deal.
 It will effect the human health & increases chances of health issues.
 All the harmful low density gases (sewer gases) will try to escape upwards In the
bathroom. But due to low roof the gases will be present at our nose level due to
which it shows effect on human health.
 The harmful gases like Ammonia, Methane, Hydrogen Sulfide,Carbon Dioxide are
present in bathroom

14. CAN SEWER GAS MAKE YOU SICK?
 Yes, exposure to sewer gas can have many negative health effects.
 Signs or symptoms of sewer gas exposure may include tiredness, irritated eyes,
coughing, nausea, shortness of breath, headaches, irritability, memory issues,
or dizziness.
 With higher concentrations of sewer gas, the health effects can be severe and may
include loss of consciousness, respiratory distress, coma, or even death.
 Additionally, if someone already has a respiratory illness, even minor exposures
to sewer gas can cause a serious health issue.