This document summarizes a study on the impact of indoor environmental quality (IEQ) on employees at the Islamic University of Gaza. The study aims to measure levels of carbon monoxide, carbon dioxide, particulate matter and noise, assess thermal comfort, and examine the relationship between IEQ and job satisfaction. Methodology includes literature review, on-site measurements, and distributing questionnaires. Key findings indicate higher than standard levels of carbon dioxide and particulate matter, with natural ventilation performing better than air conditioning. Recommendations include regular monitoring, awareness campaigns, and setting IEQ standards.

2. Research Justifications
The human element is an important for the success of the work
of any institution
IUG is located between several streets that has crowded traffic
where contributing to raise the level of pollutants
Reconstruction around the university which increase the
particulate matter and noise ratio by machinery used

3. The statistics obtained from the Medical Service of IUG confirm
that more than 500 employees were absent from the university to
excuse patients in 2011
Research justifications
The interruption of electric current made the university relies
heavily on a generator that increases the likelihood of high pollutant
inside

4. The General Purpose Of This Study
Focusing On The Effect Of IEQ
In The Islamic University
Employees

5. Q1: What is the level of IEQ in the University Rooms?
Q2: What is the impact of the elements of the IEQ on the occupant's?
Q3: What is the impact of the IEQ on the professional performance for
occupants?
Study Tries To Answer The Following Questions:

6. 1. Monitor the levels of carbon monoxide (CO), carbon dioxide
(CO2) and PM.
2. Investigate the thermal comfort inside the university buildings.
3. Monitor noise levels at different site inside the campus.
4. Examine the relationship between the study parameters.
5. Check the relation between the IEQ and job satisfaction.

7. There is no statistical difference in the mean averages of the
questionnaire results according to floor that has the room (Ground,
second , third, fourth, fifth).
There is no statistical difference in the mean averages according to
the seasons (winter, summer).
Hypotheses
There is statistical difference in the mean averages of the
questionnaire results according to ventilation method
(Windows, fans, Air Conditioning).

8. Methodology
Literature Collection And Review, which is aimed to
have a clear understanding of the previous experiences and
findings of previous researchers in the field. This stage assisted in
the formulation of the theoretical bases of the current study.
Data Measurements, was connected with the (IUG)
room's at different floor(different heights) at different time (8:30
am, 11:30 pm, 2:30 pm) In the winter and summer

9. Questionnaire Design, to find out the extent of
satisfaction about the internal environmental conditions and their
impact on employees‘. Where the population size is 1055
employees, 350 questionnaire was distributed, then received 294.
Data Analysis And Interpretation, Statistical
analysis of the result was conducted using SPSS and Excel,
compared the result with standard's, linking the result with the
questionnaire to knowing the environmental satisfaction in the
jobs.
Methodology

10. Thesis Structure

11. Instruments
Sound level meter
Handheld Particle Counter IAQ Monitor Models

12. Study Results

13. CO2 Concentrations

14. CO Concentrations

15. Buildings
WestG
Stud.Af
Secr.5.E
Secr.3.N
Secr.3.E
Secr.1.E
NorthG
Med
Lib4
Lib2
Lib1
IT.5
IT.3
IT.1
Finance
EastG
Csced.5
Csced.3
Csced.1
Cafeteri
Cafkitc
Ad.Reg
CO2(ppm)
1,400.00
1,200.00
1,000.00
800.00
600.00
400.00
200.00
0.00
V.R(L/s)
12.50
10.00
7.50
5.00
2.50
0.00
The relationship between ventilation rate and CO2

16. CO2 During Three Periods Inside The Buildings

17. sound level measurements

18. PM10 and PM2.5 concentrations level during working day inside the
building.

19. Thermal comfort Symptoms among occupants

20. Relationship between the seasons and study data

21. Relationship between the floor elevation and study data
winter
Summer

22. The impact of floors elevation on Occupants Opinion
Summer
Winter

23. The impact of location on Occupants Opinion

24. The impact of ventilation method according Occupants Opinion

25. Employees satisfaction degree in their offices

26. Conclusions
More than 80% of IUG employee feel thermal comfort inside
their office.
CO concentration is less (9 ppm ) Even inside the cafeteria
The offices that depend on air conditioning for ventilation
have the highest CO2 concentration than others which used
natural ventilation methods

27. Conclusions
There are statistically differences in the mean average among the
CO2 concentration measurement according to season, and the best
measurements were in summer.
There is a negative correlation between CO2 concentration and
ventilation rate according to the measurements.
PM concentrations in all university offices are higher than
USEPA standards and there are also significant differences
between the concentrations of PM in summer, winter and second
semester.

28. There are health effects associated with high CO2 and PM.
Carpet and students movements are essential sources for
dust inside offices, especially in winter, but in summer traffic
increase the proportion of dust.
Conclusions
The noise level in all university offices is higher than the WHO
standard in summer, but in other seasons is nearly 50%.
Opening windows and turning on fans for ventilation
increase the noise level.

29.  There are no statistically differences in the indoor environmental
parameters measurements mean according to floor level, but the
sound level has statistically differences
Conclusions
Fifty percent of the university employees feel comfortable in
their work places, but forty five percent need some changes in their
office to feel comfortable.
There is low level in productivity in winter more than summer.

30. Recommendations
Regular and periodical monitoring of the indoor environmental
parameters.
CO2 concentration should be adopted to check for any IAQ
problems related to ventilation system.
Providing Detector equipment of CO2 gas in the departments in
which CO2 measurements exceeds the allowable extent, in order to
prevent exposing the employees to high and dangerous proportion.
To reduce using generators and depend on clean energy or
transmit them to a place away from the university buildings to
avoid their gases and noises.

31. Airing departments and renewing air in the morning before
initiating work inside them to get rid of accumulated gases and
bad smells during night.
Recommendations
Cleaning air is a basic key to obtain a kind of clean interior air
by the use of air Suction equipment from inside rooms ,
especially getting rid of particle matters which are found in high
concentration, putting in consideration that Suction equipments
is far enough to reduce the level of noise.
Cleaning departments' grounds which are covered with carpets,
particularly the crowded ones with daily revisers to reduce the
amounts of dust which disappear inside the ground.

32. Recommendations
Closing the windows at the time of huge traffic movement to
reduce noise and leakage of pollution inside the departments and
Open the windows from time to another to renew air closed rooms
in Winter
Sitting prints and photocopiers a place which have more air
and far from employees' breathing.
To raise students' awareness inside the university to the
necessity of turning down high voices in departments to reduce
the level of noise.

33. Recommendations
To raise employees awareness of inconvenience dangerous of
indoor environmental parameter for hygiene, especially the noise
pollution
Standards and protocols for IEQ in university should be set as
soon as possible suitable to circumstances of the university
Improve the capabilities of universities' laboratories, and allow
them to serve in academic researches of indoor environment

34. ACKNOWLEDGMENT
Mr. Ahmed Ellouh & Mr. Wael El Madoun
who encouraged me to succeed, reviewed my
work and helped my

35. ACKNOWLEDGMENT
my mother
who encouraged and supported me
from the beginning,

36. ACKNOWLEDGMENT
my Uncle
Mr. Hateem el-khateeb
and his Wife
for his help, encouragement and advice.

37. ACKNOWLEDGMENT
my lovely wife
for the patience and support shown which
provided me the suitable environment to
achieve this goal.

38. ACKNOWLEDGMENT
my brothers and sisters
whose wisdom and love shaped me as I
grew up.

39. Dedication
To the soul of
my dear father