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Dr. Mamdooh Alwetaishi
Taif University, Saudi Arabia

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Short Biography

Dr. Alwetaishi is an associate professor in the college of Engineering, Taif University, Saudi Arabia. He obtained his MSc and PhD from the University of Nottingham in the UK in the topic of Renewable and Sustainable Building Technology. Alwetaishi was the head of Civil Engineering department from 2015-2018, in 2018 he was appointed as Supervisor of Architectural Engineering Program in the college which is a new established program. Alwetaishi has a strong published profile of publication in well know International Journals such as Building Engineering, Indoor and Built Environment and Construction and Management. Dr Alwetaishi was involved in bumber of administrative missions on the level of College as well as the University.

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Journal article
Published: 25 August 2021 in Sustainability
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Around the world, cities are on the front lines of sustainable development. They are responsible for more than 70% of global carbon emissions. Many of these cities are experiencing dangerous levels of pollution, underemployment, and health disparities. Since 2015, 193 countries have endorsed the 17 Sustainable Development Goals (SDGs), intended to help address a wide range of challenges affecting cities and ultimately secure the resources for their next generations. All states are expected to present the national progress towards the SDGs through a Voluntary National Review (VNR). Despite the importance of the cities within this framework, only a handful of them worldwide have actively begun to review and assess progress towards these SDGs on a city scale. This paper seeks to develop a Voluntary Local Review (VLR) framework to assess and evaluate the progress of cities towards contributing to the SDGs. This framework has been developed by localizing the international and national frameworks to measure the performance of cities as they advance towards achieving the SDGs. Such a framework can serve as a tool for benchmarking progress on different aspects of sustainable development and help urban planners and policymakers prioritize policies and actions to improve urban quality of life. This framework is applied to monitor and evaluate the progress of the city of Buraidah in Saudi Arabia, as it strives towards achieving the targets of SDG11 (“Make cities and human settlements inclusive, safe, resilient and sustainable”).

ACS Style

Taher Osman; Emad Kenawy; Karim I. Abdrabo; David Shaw; Aref Alshamndy; Mohamed Elsharif; Muhammad Salem; Mamdooh Alwetaishi; Reda M. Aly; Bahaa Elboshy. Voluntary Local Review Framework to Monitor and Evaluate the Progress towards Achieving Sustainable Development Goals at a City Level: Buraidah City, KSA and SDG11 as A Case Study. Sustainability 2021, 13, 9555 .

AMA Style

Taher Osman, Emad Kenawy, Karim I. Abdrabo, David Shaw, Aref Alshamndy, Mohamed Elsharif, Muhammad Salem, Mamdooh Alwetaishi, Reda M. Aly, Bahaa Elboshy. Voluntary Local Review Framework to Monitor and Evaluate the Progress towards Achieving Sustainable Development Goals at a City Level: Buraidah City, KSA and SDG11 as A Case Study. Sustainability. 2021; 13 (17):9555.

Chicago/Turabian Style

Taher Osman; Emad Kenawy; Karim I. Abdrabo; David Shaw; Aref Alshamndy; Mohamed Elsharif; Muhammad Salem; Mamdooh Alwetaishi; Reda M. Aly; Bahaa Elboshy. 2021. "Voluntary Local Review Framework to Monitor and Evaluate the Progress towards Achieving Sustainable Development Goals at a City Level: Buraidah City, KSA and SDG11 as A Case Study." Sustainability 13, no. 17: 9555.

Journal article
Published: 08 August 2021 in Buildings
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Globally, there has been a remarkable growth in the number of underground constructions (UGC) such as railways, offices, hospitals and shopping malls. This expansion is a result of urban area extensions that are limited by the availability of buildable land. Underground construction can also be used to protect people from the harshness of the outdoor conditions. The aim of this research is to investigate the impact of underground construction in hot regions. The major issue with most of the current UGC is the lack of natural ventilation and daylight. This has a clear negative impact on the user’s perception and comfort. The new design elevates the external walls to place some of the windows above ground for the purpose of natural ventilation and providing a view. The study conducted an experiment using an underground room enhanced with field measurements to ascertain the indoor temperature as well as relative humidity. In addition, the study used an energy simulation to calculate building heat transfer and solar heat gain. It was revealed that the use of UGC in hot regions promoted with the addition of natural ventilation can lower the indoor temperature by 3 °C in summer.

ACS Style

Mamdooh Alwetaishi; Omrane Benjeddou; Ashraf Balabel; Ali Alzaed. Can Underground Buildings Be Beneficial in Hot Regions? An Investigation of Field Measurements in On-Site Built Underground Construction. Buildings 2021, 11, 341 .

AMA Style

Mamdooh Alwetaishi, Omrane Benjeddou, Ashraf Balabel, Ali Alzaed. Can Underground Buildings Be Beneficial in Hot Regions? An Investigation of Field Measurements in On-Site Built Underground Construction. Buildings. 2021; 11 (8):341.

Chicago/Turabian Style

Mamdooh Alwetaishi; Omrane Benjeddou; Ashraf Balabel; Ali Alzaed. 2021. "Can Underground Buildings Be Beneficial in Hot Regions? An Investigation of Field Measurements in On-Site Built Underground Construction." Buildings 11, no. 8: 341.

Journal article
Published: 29 July 2021 in Sustainability
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This paper discusses in detail the current level of awareness of the Saudi Arabia stakeholders regarding the use and application of green building rating systems. The paper used a mix of qualitative and quantitative research methods through an exploratory method that utilized an online survey targeting experts and construction stakeholders to fill the gap of previous research papers and support the argument of the increase in the level of the awareness of stakeholders in the use and application of green building rating systems in Saudi Arabia. This research aims to focus on the level of awareness of the Saudi construction market stakeholders on green building rating systems in Saudi Arabia with focus on the Leadership in Energy and Environmental Design system LEED and Mostadam. It also investigated which rating system responds to the need of the Saudi construction market with regard to energy conservation and water consumption more effectively. The methodology utilized in this research used a combination of primary and secondary data where the primary data were a survey sent to Saudi construction stakeholders where a total of 1320 respondents participated in the survey. Results from this research showed a promising number of agreements between the participating stakeholders to the level of awareness of green building rating systems in Saudi Arabia and to the willingness to use internationally recognized rating systems such as LEED and the use of locally recognized systems such as Mostadam. Furthermore, the research aims to link the results with the Sustainable Development Goals (SDGs) with a focus on SDGs 6 and 7. The results show a high level of appreciation and agreement to the importance of energy and water conservation in green buildings that will be using either LEED or Mostadam in Saudi Arabia and accomplish the targets outlined under the SDGs.

ACS Style

Mohammed Al-Surf; Ashraf Balabel; Mamdooh Alwetaishi; Ahmed Abdelhafiz; Usama Issa; Ibrahim Sharaky; Amal Shamseldin; Mosleh Al-Harthi. Stakeholder’s Perspective on Green Building Rating Systems in Saudi Arabia: The Case of LEED, Mostadam, and the SDGs. Sustainability 2021, 13, 8463 .

AMA Style

Mohammed Al-Surf, Ashraf Balabel, Mamdooh Alwetaishi, Ahmed Abdelhafiz, Usama Issa, Ibrahim Sharaky, Amal Shamseldin, Mosleh Al-Harthi. Stakeholder’s Perspective on Green Building Rating Systems in Saudi Arabia: The Case of LEED, Mostadam, and the SDGs. Sustainability. 2021; 13 (15):8463.

Chicago/Turabian Style

Mohammed Al-Surf; Ashraf Balabel; Mamdooh Alwetaishi; Ahmed Abdelhafiz; Usama Issa; Ibrahim Sharaky; Amal Shamseldin; Mosleh Al-Harthi. 2021. "Stakeholder’s Perspective on Green Building Rating Systems in Saudi Arabia: The Case of LEED, Mostadam, and the SDGs." Sustainability 13, no. 15: 8463.

Journal article
Published: 15 June 2021 in Sustainability
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Saudi Arabia vision 2030 emphasizes the applications of sustainability concepts in all aspects of life in Saudi society. Accordingly, the Mostadam rating system for existing and new buildings was recently launched to achieve appropriate, sustainable building standards. In the medical field, sustainable healthcare facilities are an extension of the concept of sustainable buildings in terms of important sustainable healthcare parameters. Therefore, the sustainable development of healthcare facilities has great impacts on growing economic, social and environmental issues, which, in turn, improve Saudi society’s public health. Moreover, the COVID-19 pandemic has further exposed the urgent need for sustainable healthcare facilities to control the outbreak of such dangerous pandemics. Accordingly, the retrofitting of the existing healthcare facilities and the shift toward new sustainable ones have become an important objective of many countries worldwide. Currently, the concepts related to sustainable healthcare facilities are rapidly varying their scopes toward wider perspectives. Therefore, a new local rating system for healthcare facilities based on the potential and resources of sustainable healthcare facilities in Saudi Arabia should be developed. The present paper investigates the development of a new version of the Mostadam rating system, known here as “Mostadam-HCF”, in relation to the local Mostadam rating system and in accordance with the LEED version 4.1 (BD + C: Health-care). This important step can help the existing and the new healthcare facilities in Saudi Arabia to obtain, firstly, national accreditation and, consequently, to be internationally accredited. Moreover, the initiative of sustainable healthcare facilities can also help in fighting the current COVID-19 pandemic and the other possible future viruses in Saudi Arabia.

ACS Style

Ashraf Balabel; Mamdooh Alwetaishi. Toward Sustainable Healthcare Facilities: An Initiative for Development of “Mostadam-HCF” Rating System in Saudi Arabia. Sustainability 2021, 13, 6742 .

AMA Style

Ashraf Balabel, Mamdooh Alwetaishi. Toward Sustainable Healthcare Facilities: An Initiative for Development of “Mostadam-HCF” Rating System in Saudi Arabia. Sustainability. 2021; 13 (12):6742.

Chicago/Turabian Style

Ashraf Balabel; Mamdooh Alwetaishi. 2021. "Toward Sustainable Healthcare Facilities: An Initiative for Development of “Mostadam-HCF” Rating System in Saudi Arabia." Sustainability 13, no. 12: 6742.

Journal article
Published: 04 June 2021 in Sustainability
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Improving building performance through reducing negative environmental impacts can be achieved by greening existing buildings (GEB), which is considered a very important sustainability process. Due to the risky and uncertain nature of the process of GEB, a growing amount of attention should be given to eliminating the effects of risks on GEB. This research aims to identify most expected risk factors related to GEB, as well as to evaluate their effects through calculating risk factor characteristics, such as risk factor presence (RFP), impact on the GEB process (IGEB), and impact on building performance in the long run (IBP), as new indices describe these risks. Sixty-six risk factors were categorized in seven risk groups related to the economic aspect, social aspect, environmental aspect, managerial aspect, sustainability operation, sustainable design, and renovation. Moreover, a fuzzy model for risk analysis was developed to combine the multi-effects of the aforementioned three risk factor characteristics in one index representing the risk factors’ overall importance. The model was applied and verified for data collected in Saudi Arabia. The results of this study showed that the most important risk group is the greening process of environmental control, while the least important is the greening process of renovation and construction. Using the proposed model improved the results of evaluating risks affecting GEB through merging the multi-effects of risk factor characteristics. The results and analysis proved that the most important key risk factors were environmental in nature. An intricate relationship of the impacts on the GEB process and building performance with the overall importance of the risk factors was clearly found. The decision makers who deal with greening projects in Saudi Arabia should be aware of the key risks identified in this study. The proposed methodology and model can be easily applied to other countries to help decision makers in evaluating their GEB projects, as well as comparing more greening projects based on risk analysis.

ACS Style

Usama Issa; Ibrahim Sharaky; Mamdooh Alwetaishi; Ashraf Balabel; Amal Shamseldin; Ahmed Abdelhafiz; Mohammed Al-Surf; Mosleh Al-Harthi; Medhat Osman. Developing and Applying a Model for Evaluating Risks Affecting Greening Existing Buildings. Sustainability 2021, 13, 6403 .

AMA Style

Usama Issa, Ibrahim Sharaky, Mamdooh Alwetaishi, Ashraf Balabel, Amal Shamseldin, Ahmed Abdelhafiz, Mohammed Al-Surf, Mosleh Al-Harthi, Medhat Osman. Developing and Applying a Model for Evaluating Risks Affecting Greening Existing Buildings. Sustainability. 2021; 13 (11):6403.

Chicago/Turabian Style

Usama Issa; Ibrahim Sharaky; Mamdooh Alwetaishi; Ashraf Balabel; Amal Shamseldin; Ahmed Abdelhafiz; Mohammed Al-Surf; Mosleh Al-Harthi; Medhat Osman. 2021. "Developing and Applying a Model for Evaluating Risks Affecting Greening Existing Buildings." Sustainability 13, no. 11: 6403.

Journal article
Published: 02 June 2021 in Sustainability
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In this study, the recycled concrete aggregates and powder (RCA and RCP) prepared from basaltic concrete waste were used to replace the natural aggregate (NA) and cement, respectively. The NA (coarse and fine) was replaced by the recycled aggregates with five percentages (0%, 20%, 40%, 60% and 80%). Consequently, the cement was replaced by the RCP with four percentages (0%, 5%, 10% and 20%). Cubes with 100 mm edge length were prepared for all tests. The compressive and tensile strengths (fcu and ftu) and water absorption (WA) were investigated for all mixes at different ages. Partial substitution of NA with recycled aggregate reduced the compressive strength with different percentages depending on the type and source of recycled aggregate. After 28 days, the maximum reduction in fcu value was 9.8% and 9.4% for mixtures with coarse RCA and fine RCA (FRCA), respectively. After 56 days, the mixes with 40% FRCA reached almost the same fcu value as the control mix (M0, 99.5%). Consequently, the compressive strengths of the mixes with 10% RCA at 28 and 56 days were 99.3 and 95.2%, respectively, compared to those of M0. The mixes integrated FRCA and RCP showed higher tensile strengths than the M0 at 56 d with a very small reduction at 28 d (max = 3.4%). Moreover, the fcu and ftu values increased for the late test ages, while the WA decreased.

ACS Style

Ibrahim Sharaky; Usama Issa; Mamdooh Alwetaishi; Ahmed Abdelhafiz; Amal Shamseldin; Mohammed Al-Surf; Mosleh Al-Harthi; Ashraf Balabel. Strength and Water Absorption of Sustainable Concrete Produced with Recycled Basaltic Concrete Aggregates and Powder. Sustainability 2021, 13, 6277 .

AMA Style

Ibrahim Sharaky, Usama Issa, Mamdooh Alwetaishi, Ahmed Abdelhafiz, Amal Shamseldin, Mohammed Al-Surf, Mosleh Al-Harthi, Ashraf Balabel. Strength and Water Absorption of Sustainable Concrete Produced with Recycled Basaltic Concrete Aggregates and Powder. Sustainability. 2021; 13 (11):6277.

Chicago/Turabian Style

Ibrahim Sharaky; Usama Issa; Mamdooh Alwetaishi; Ahmed Abdelhafiz; Amal Shamseldin; Mohammed Al-Surf; Mosleh Al-Harthi; Ashraf Balabel. 2021. "Strength and Water Absorption of Sustainable Concrete Produced with Recycled Basaltic Concrete Aggregates and Powder." Sustainability 13, no. 11: 6277.

Journal article
Published: 31 May 2021 in Crystals
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Stone industry has generated about 200 million tons of marble waste by marble processing industries whether in the form of sludge or solid blocks. The accumulated marble wastes contaminate water and air and have harmful effects on human health, plants, and animals. This study focuses on exploring the uses of powder obtained by drying and grinding marble sludge waste, generated from marble manufacturing processes, as a mineral filler for other construction materials. First, physical characterization was performed on marble sludge. Second, the powder preparation process was presented. Thereafter, a set of tests was carried out to identify the chemical, mineralogical, and physical properties of marble powder. By doing so, tests such as chemical analysis, calcium carbonate content, and methylene blue test, as well as mineralogical characterization using X-ray diffraction (XRD), Atterberg limits, particle size analysis, densities, Blaine specific surface, hydraulic property, as well as reaction with admixture, cement, and activity index were conducted. In the last part of this work, the obtained powder properties are compared to the standards requirements to confirm its suitability as mineral filler. The test results showed that the obtained marble powder is too rich in calcite; it is poor of any clay minerals fraction; it is very well graded; it is not reactive; and it does not have any effects on concrete strength; consequently, it can be considered as a mineral filler.

ACS Style

Omrane Benjeddou; Mamdooh Alwetaishi. Valorization of Powder Obtained from Marble Sludge Waste and Its Suitability as a Mineral Filler. Crystals 2021, 11, 619 .

AMA Style

Omrane Benjeddou, Mamdooh Alwetaishi. Valorization of Powder Obtained from Marble Sludge Waste and Its Suitability as a Mineral Filler. Crystals. 2021; 11 (6):619.

Chicago/Turabian Style

Omrane Benjeddou; Mamdooh Alwetaishi. 2021. "Valorization of Powder Obtained from Marble Sludge Waste and Its Suitability as a Mineral Filler." Crystals 11, no. 6: 619.

Journal article
Published: 03 May 2021 in Ain Shams Engineering Journal
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An acceptable viscosity and an easy penetrability of cement - limestone filler grout in the granular matrix of self compacting concrete are an important factors that affecting both its rheological and its hardened properties. This experimental and theoretical work consists to study the effect of limestone filler fineness on the rheological behavior of cement - limestone filler grout. In the first part, five different grouts were prepared by varying the Blaine Specific Surface (BSS) of the limestone filler, 3060, 4750, 6320, 7680 and 9440 cm2/g, respectively. A large number of properties relating to the rheology and the stability are carried out on the five grouts such as grain dispersion, density, volume concentration of solid, dynamic viscosity and Marsh funnel flow. The second part consists to develop a theoretical model to predict the different rheological properties of the grout as function of limestone filler BSS. The results show that the rheological properties of cement-limestone filler grout such as the dispersion percentage, the intergranular distance and the flow time are strongly affected by the limestone fillers fineness. In addition, the experimental and the predicted results present a good agreement.

ACS Style

Omrane Benjeddou; Mamdooh Alwetaishi; Morched Tounsi; Rayed Alyousef; Hisham Alabduljabbar. Effects of limestone filler fineness on the rheological behavior of cement – Limestone filler grouts. Ain Shams Engineering Journal 2021, 1 .

AMA Style

Omrane Benjeddou, Mamdooh Alwetaishi, Morched Tounsi, Rayed Alyousef, Hisham Alabduljabbar. Effects of limestone filler fineness on the rheological behavior of cement – Limestone filler grouts. Ain Shams Engineering Journal. 2021; ():1.

Chicago/Turabian Style

Omrane Benjeddou; Mamdooh Alwetaishi; Morched Tounsi; Rayed Alyousef; Hisham Alabduljabbar. 2021. "Effects of limestone filler fineness on the rheological behavior of cement – Limestone filler grouts." Ain Shams Engineering Journal , no. : 1.

Conference paper
Published: 01 May 2021 in IOP Conference Series: Materials Science and Engineering
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The use of Artificial Intelligence AI and Big data can contribute to improve energy performance in buildings. There are so many data are available in different institutions within a country such as Ministry of housing and electricity companies. The aim of this research is to propose a link between all these institutions with the aid of field measurement and occupants' thermal sensation. The work used various methods to carry out this research including field measurement, computer modelling and survey. It was found that use of AI in existing buildings can improve energy performance significantly. The current research focused on optimization of WWR (Window to Wall Ratio) with orientation. WWR for western zones should not exceed 15% in extreme hot and humid climate and it can reduce energy consumption by 20%.

ACS Style

Mamdooh Alwetaishi; Amal Shamseldin. The use of artificial intelligence (AI) and Big-Data to improve energy consumption in existing buildings. IOP Conference Series: Materials Science and Engineering 2021, 1148, 012001 .

AMA Style

Mamdooh Alwetaishi, Amal Shamseldin. The use of artificial intelligence (AI) and Big-Data to improve energy consumption in existing buildings. IOP Conference Series: Materials Science and Engineering. 2021; 1148 (1):012001.

Chicago/Turabian Style

Mamdooh Alwetaishi; Amal Shamseldin. 2021. "The use of artificial intelligence (AI) and Big-Data to improve energy consumption in existing buildings." IOP Conference Series: Materials Science and Engineering 1148, no. 1: 012001.

Journal article
Published: 23 March 2021 in Ain Shams Engineering Journal
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Thermal comfort preference in primary schools is quite crucial because of the difficulty of young students to show and reflect their actual status of comfort: they may come with a jacket early morning in winter, but they may not take it off later in the afternoon. Little research on thermal comfort has been done in educational buildings globally as compared to other types of buildings such as working places. This research was focused on the ultimate type of shading devices in relation to thermal energy performance such as indoor air temperature, solar heat gain, and day-lighting from one side and thermal comfort preference from the other. In this research, we used a variety of tools such as thermal imaging cameras, TAS EDSL software. There is a clear lack in economical perspective for the users in this region to try to adapt without heavy reliance on air-conditioning systems, one of the major contribution of this study is to provide alternatives for sustainable buildings. We observed that vertical shading systems were generally more preferable for efficient shading in hot regions.

ACS Style

Mamdooh Alwetaishi; Hanan Al-Khatri; Omrane Benjeddou; Amal Shamseldin; Mishal Alsehli; Saleh Alghamdi; Raid Shrahily. An investigation of shading devices in a hot region: A case study in a school building. Ain Shams Engineering Journal 2021, 1 .

AMA Style

Mamdooh Alwetaishi, Hanan Al-Khatri, Omrane Benjeddou, Amal Shamseldin, Mishal Alsehli, Saleh Alghamdi, Raid Shrahily. An investigation of shading devices in a hot region: A case study in a school building. Ain Shams Engineering Journal. 2021; ():1.

Chicago/Turabian Style

Mamdooh Alwetaishi; Hanan Al-Khatri; Omrane Benjeddou; Amal Shamseldin; Mishal Alsehli; Saleh Alghamdi; Raid Shrahily. 2021. "An investigation of shading devices in a hot region: A case study in a school building." Ain Shams Engineering Journal , no. : 1.

Journal article
Published: 18 February 2021 in Energies
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The concern regarding local responsive building design has gained more attention globally as of late. This is due to the issue of the rapid increase in energy consumption in buildings for the purpose of heating and cooling. This has become a crucial issue in educational buildings and especially in schools. The major issue in school buildings in Saudi Arabia is that they are a form of prototype school building design (PSBD). As a result, if there is any concern in the design stage and in relation to the selection of building materials, this will spread throughout the region. In addition to that, the design is repeated regardless of the climate variation within the kingdom of Saudi Arabia. This research will focus on the influence of the window to wall ratio on the energy load in various orientations and different climatic regions. The research will use the energy computer tool TAS Environmental Design Solution Limited (EDSL) to calculate the energy load as well as solar gain. During the visit to the sample schools, a globe thermometer will be used to monitor the globe temperature in the classrooms. This research introduces a framework to assist architects and engineers in selecting the proper window to wall ratio (WWR) in each direction within the same building based on adequate natural light with a minimum reliance on energy load. For ultimate WWR for energy performance and daylight, the WWR should range from 20% to 30%, depending on orientation, in order to provide the optimal daylight factor combined with building energy efficiency. This ratio can be slightly greater in higher altitude locations.

ACS Style

Mamdooh Alwetaishi; Omrane Benjeddou. Impact of Window to Wall Ratio on Energy Loads in Hot Regions: A Study of Building Energy Performance. Energies 2021, 14, 1080 .

AMA Style

Mamdooh Alwetaishi, Omrane Benjeddou. Impact of Window to Wall Ratio on Energy Loads in Hot Regions: A Study of Building Energy Performance. Energies. 2021; 14 (4):1080.

Chicago/Turabian Style

Mamdooh Alwetaishi; Omrane Benjeddou. 2021. "Impact of Window to Wall Ratio on Energy Loads in Hot Regions: A Study of Building Energy Performance." Energies 14, no. 4: 1080.

Journal article
Published: 15 January 2021 in Sustainability
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Saudi Arabia vision 2030 adopts comprehensive development standards in all fields of Saudi society. To achieve such standards, many initiatives and programs have been launched to achieve sustainable goals while meeting the needs of the present without compromising the requirements of future generations. Sustainable buildings are highly important in achieving sustainable development goals due to their excellent ability to reduce energy consumption, increase building efficiency, and reduce harmful emissions of greenhouse gases. The Kingdom aims to be the largest investor in the world in the sustainable buildings sector. To this end, the “Mostadam” evaluation service was recently launched in order to assist existing and new buildings in achieving sustainable building standards in a way that is in keeping with the privacy and principles of Saudi society. The present paper presents an extensive investigation to assess the current state of sustainable buildings in Saudi cities. Moreover, the main categories of sustainable residential buildings according to the “Mostadam” rating systems are discussed, and the potential of such categories in Saudi Arabia is explored. Finally, suggestions are given for some practical strategies and future policies targeting the total transformation towards sustainable buildings and, consequently, towards sustainable cities. This will have a great impact on achieving comprehensive sustainable development in Saudi Arabia in line with vision 2030.

ACS Style

Ashraf Balabel; Mamdooh Alwetaishi. Towards Sustainable Residential Buildings in Saudi Arabia According to the Conceptual Framework of “Mostadam” Rating System and Vision 2030. Sustainability 2021, 13, 793 .

AMA Style

Ashraf Balabel, Mamdooh Alwetaishi. Towards Sustainable Residential Buildings in Saudi Arabia According to the Conceptual Framework of “Mostadam” Rating System and Vision 2030. Sustainability. 2021; 13 (2):793.

Chicago/Turabian Style

Ashraf Balabel; Mamdooh Alwetaishi. 2021. "Towards Sustainable Residential Buildings in Saudi Arabia According to the Conceptual Framework of “Mostadam” Rating System and Vision 2030." Sustainability 13, no. 2: 793.

Journal article
Published: 09 December 2020 in Sustainability
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Along with the global concern of the Environmental Assessment of Buildings, the Kingdom of Saudi Arabia (KSA) had recently used its system, Mostadam, to provide a suitable method to assess its buildings environmentally. Nevertheless, Mostadam still cannot be used for all Saudi Arabia regions without having misleading results, which is due to its various internal regions with their various characteristics. Taif city has its unique environmental characteristics, which affect all the environmental buildings’ assessment fields. This research aimed to adjust the Indoor Environmental Quality (IEQ) field of Mostadam according to Taif characteristics. The research analyzed Taif characteristics that have an impact on the IEQ field, which are mainly related to the occupants’ different comfort needs and health requirements. Then, according to an analytical methods, authors proposed some changes to adjust Mostadam IEQ field according to these characteristics. The research resulted in an obvious difference between the resulted IEQ items weights and formulation versus the origin one of Mostadam, which proves the need for such adjustment to achieve a fair and trusted assessment to achieve the utmost credible assessment results when assessing buildings environmentally in Taif. It is recommended to adjust other assessment fields similarly later on, and then globally.

ACS Style

Amal Shamseldin; Ashraf Balabel; Mamdooh Alwetaishi; Ahmed Abdelhafiz; Usama Issa; Ibrahim Sharaky; Mohamed Al-Surf; Mosleh Al-Harthi. Adjustment of the Indoor Environmental Quality Assessment Field for Taif City-Saudi Arabia. Sustainability 2020, 12, 10275 .

AMA Style

Amal Shamseldin, Ashraf Balabel, Mamdooh Alwetaishi, Ahmed Abdelhafiz, Usama Issa, Ibrahim Sharaky, Mohamed Al-Surf, Mosleh Al-Harthi. Adjustment of the Indoor Environmental Quality Assessment Field for Taif City-Saudi Arabia. Sustainability. 2020; 12 (24):10275.

Chicago/Turabian Style

Amal Shamseldin; Ashraf Balabel; Mamdooh Alwetaishi; Ahmed Abdelhafiz; Usama Issa; Ibrahim Sharaky; Mohamed Al-Surf; Mosleh Al-Harthi. 2020. "Adjustment of the Indoor Environmental Quality Assessment Field for Taif City-Saudi Arabia." Sustainability 12, no. 24: 10275.

Journal article
Published: 19 November 2020 in Sustainability
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The study investigated the level of thermal comfort in historical buildings located at a relatively high altitude in the Arabian Desert of Saudi Arabia. The study focused on the impact of the use of thermal mass and orientation on the level of thermal performance at Shubra and Boqri Palaces. Qualitative and quantitative analyses were used in this study, including a questionnaire interview with architecture experts living at the relatively high altitude of Taif city, to obtain data and information from local experts. The computer software TAS EDSL was used along with on-site equipment, such as thermal imaging cameras and data loggers, to observe the physical conditions of the building in terms of its thermal performance. The study revealed that the experts’ age and years of experience were important aspects while collecting data from them during the survey. The use of thermal mass had a slight impact on the indoor air temperature as well as the energy consumption, but it helped in providing thermal comfort. Use of ventilation can improve thermal comfort level. Evaporative cooling technique has a considerable impact on reducing indoor air temperature with 4 °C drop, improving the thermal comfort sensation level. The novelty of this work is that, it links the outcomes of qualitative results of experts with field monitoring as well as computer modelling. This can contribute as method to accurately collect data in similar case studies.

ACS Style

Mamdooh Alwetaishi; Ashraf Balabel; Ahmed Abdelhafiz; Usama Issa; Ibrahim Sharaky; Amal Shamseldin; Mohammed Al-Surf; Mosleh Al-Harthi; Mohamed Gadi. User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation. Sustainability 2020, 12, 9672 .

AMA Style

Mamdooh Alwetaishi, Ashraf Balabel, Ahmed Abdelhafiz, Usama Issa, Ibrahim Sharaky, Amal Shamseldin, Mohammed Al-Surf, Mosleh Al-Harthi, Mohamed Gadi. User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation. Sustainability. 2020; 12 (22):9672.

Chicago/Turabian Style

Mamdooh Alwetaishi; Ashraf Balabel; Ahmed Abdelhafiz; Usama Issa; Ibrahim Sharaky; Amal Shamseldin; Mohammed Al-Surf; Mosleh Al-Harthi; Mohamed Gadi. 2020. "User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation." Sustainability 12, no. 22: 9672.

Research article
Published: 11 November 2020 in Advances in Building Energy Research
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Heritage buildings were built in a period when energy equipment for cooling and heating did not exist. This research focuses on the way in which we could benefit from such constructions to impact today's buildings and society. The investigation will consider a number of elements such as thermal mass, day-lighting and thermal comfort in comparison with a new simulated building which has the same design as the Heritage one. The research was conducted using the energy simulation tool TAS EDSL and on site measurement. In addition to that, an advanced thermal imaging camera was used in the study of physical characteristics of the building. The study revealed that applying methods of Heritage buildings to modern buildings, such as the use of thermal mass and natural ventilation, can have a considerable impact on energy consumption and thermal comfort for users. It can reduce indoor temperature up to 5°C. It was also found that the use of natural ventilation is linked to indoor thermal comfort. Large area of glazing is recommended to be used in such region when it is applied in the proper way.

ACS Style

Mamdooh Alwetaishi. Can we learn from heritage buildings to achieve nearly zero energy building and thermal comfort? A case study in a hot climate. Advances in Building Energy Research 2020, 1 -17.

AMA Style

Mamdooh Alwetaishi. Can we learn from heritage buildings to achieve nearly zero energy building and thermal comfort? A case study in a hot climate. Advances in Building Energy Research. 2020; ():1-17.

Chicago/Turabian Style

Mamdooh Alwetaishi. 2020. "Can we learn from heritage buildings to achieve nearly zero energy building and thermal comfort? A case study in a hot climate." Advances in Building Energy Research , no. : 1-17.

Journal article
Published: 06 July 2020 in Energy and Built Environment
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Wind catchers used in various countries in Middle East and North Africa in order to improve indoor air environment and to reduce reliance on cooling load. However, nowadays they are used across the globe with modern shapes and advanced techniques. The study focuses on investigating new and innovative shapes of wind catchers to improve air speed indoors which will elevate indoor comfort and air quality in buildings. The study used computer modeling CFD and a real model experiment to conduct the study. The study highlighted that curved shapes have highest pattern of wind speed driven, especially curved shape with double inlets. In addition, the study showed that octagon shape has the lowest pattern of wind speed driven because of its various sides which prevent air to flow easily inside the tunnel.

ACS Style

Mamdooh Alwetaishi; Mohamed Gadi. New and innovative wind catcher designs to improve indoor air quality in buildings. Energy and Built Environment 2020, 2, 337 -344.

AMA Style

Mamdooh Alwetaishi, Mohamed Gadi. New and innovative wind catcher designs to improve indoor air quality in buildings. Energy and Built Environment. 2020; 2 (4):337-344.

Chicago/Turabian Style

Mamdooh Alwetaishi; Mohamed Gadi. 2020. "New and innovative wind catcher designs to improve indoor air quality in buildings." Energy and Built Environment 2, no. 4: 337-344.

Journal article
Published: 21 March 2020 in Journal of Building Engineering
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Students' health and productivity are affected by the thermal conditions inside the educational environments. Considering the lack of thermal comfort research in the Arabian Gulf region, the combination of the extreme climatic conditions, the general restriction on adaptive actions, and the lack of economic responsibility lead to heavy reliance on air conditioning units, which has environmental and economical sequences. A first step in reducing this reliance is understanding the students' thermal experiences. This paper attempts to feed the pool of thermal comfort research in the Arabic region by investigating and comparing the thermal conditions of female and male students considering their neutral temperatures and acceptability limits. Objective and subjective data were collected from five and three female and male schools respectively during the cooler season. Analysing the former data revealed the general similarity of the thermal conditions inside the investigated classrooms except for three classrooms. Around 50% of the female students were (neutral) compared with almost 20% of male students despite the heavier insulation level of the former, which may indicate an addiction to ACs for the male students. Applying Griffiths’ method, the neutral temperature was estimated at 24.3 ± 1.09 °C for the former students and 26.1 ± 0.92 °C for the latter students. Comparatively, the acceptability limits of the male students were shifted to the warm side of the thermal continuum.

ACS Style

Hanan Al-Khatri; Mamdooh Alwetaishi; Mohamed B. Gadi. Exploring thermal comfort experience and adaptive opportunities of female and male high school students. Journal of Building Engineering 2020, 31, 101365 .

AMA Style

Hanan Al-Khatri, Mamdooh Alwetaishi, Mohamed B. Gadi. Exploring thermal comfort experience and adaptive opportunities of female and male high school students. Journal of Building Engineering. 2020; 31 ():101365.

Chicago/Turabian Style

Hanan Al-Khatri; Mamdooh Alwetaishi; Mohamed B. Gadi. 2020. "Exploring thermal comfort experience and adaptive opportunities of female and male high school students." Journal of Building Engineering 31, no. : 101365.

Journal article
Published: 01 July 2019 in Journal of King Saud University - Engineering Sciences
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M. Alwetaishi; A. Balabel. Numerical study of micro-climatically responsive school building design in Saudi Arabia. Journal of King Saud University - Engineering Sciences 2019, 31, 224 -233.

AMA Style

M. Alwetaishi, A. Balabel. Numerical study of micro-climatically responsive school building design in Saudi Arabia. Journal of King Saud University - Engineering Sciences. 2019; 31 (3):224-233.

Chicago/Turabian Style

M. Alwetaishi; A. Balabel. 2019. "Numerical study of micro-climatically responsive school building design in Saudi Arabia." Journal of King Saud University - Engineering Sciences 31, no. 3: 224-233.

Research article
Published: 03 May 2019 in Indoor and Built Environment
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Global attention is currently focussed on developing techniques to improve the thermal performance of buildings to provide indoor comfort with minimum reliance on energy load. Several studies have investigated building facade, materials used and other factors involved in building design. The aim of this study is to examine the impact of thermal insulation, shading devices, window-to-wall ratio (WWR) and a combination of these factors in a prototype school building design in the warm climate city of Taif, Saudi Arabia. The study used various methods classified into two main phases. The first phase involved on-site observation where both thermal imaging and regular cameras were used to examine the influence of orientation on glazing as a baseline. The second phase involved advanced software investigations with 2D AutoCAD, 3D Revit and computer modelling for energy evaluation and daylight factor. A detailed framework was introduced to examine current school buildings and to improve the future designs of prototype school buildings. The study revealed that a combination of applying thermal insulation along with minimising WWR is required in existing buildings within hot and dry regions. Furthermore, it was recommended that WWR should not exceed 35%, 25% and 20% for northwest, southeast and southwest building facades, respectively.

ACS Style

Mamdooh Alwetaishi; Ahmad Taki. Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio. Indoor and Built Environment 2019, 29, 24 -39.

AMA Style

Mamdooh Alwetaishi, Ahmad Taki. Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio. Indoor and Built Environment. 2019; 29 (1):24-39.

Chicago/Turabian Style

Mamdooh Alwetaishi; Ahmad Taki. 2019. "Investigation into energy performance of a school building in a hot climate: Optimum of window-to-wall ratio." Indoor and Built Environment 29, no. 1: 24-39.

Journal article
Published: 01 January 2019 in Journal of King Saud University - Engineering Sciences
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ACS Style

Mamdooh Alwetaishi. Impact of glazing to wall ratio in various climatic regions: A case study. Journal of King Saud University - Engineering Sciences 2019, 31, 6 -18.

AMA Style

Mamdooh Alwetaishi. Impact of glazing to wall ratio in various climatic regions: A case study. Journal of King Saud University - Engineering Sciences. 2019; 31 (1):6-18.

Chicago/Turabian Style

Mamdooh Alwetaishi. 2019. "Impact of glazing to wall ratio in various climatic regions: A case study." Journal of King Saud University - Engineering Sciences 31, no. 1: 6-18.