Recently, in the light of climatic changes all over the world and technical developments, the building envelope, which is part of a physical system that includes internal and external environments and serves as a physical barrier between them, has become one of the most important studies of building science. These studies have led it to a change in building techniques, materials, designs and concepts of some building envelopes that have emerged all over the world. The building envelope materials are no longer just a cladding that have a secondary role in influencing the cultural appearance and character of the building, but turned into one of the important tools in functionality. This change has reflected in the evolution of the envelope capability to transform its main role from just a barrier to providing a comfortable indoor environment for occupants of the building, as described in all relevant definitions of the envelope, to an envelope that is also responsible towards the external natural environment to restore its quality rather than the negative effects it was causing to this environment.Despite these changes that impose themselves, there are inefficiencies in its practice at the local level, especially in the development projects in new cities, due to many local architects are lack of knowledge of the new capabilities of the building envelopes. In this context, the study seeks to gain a deep understanding of the relationship between the building material, the building envelope and its external environment, and to highlight the growing need for such envelopes. Therefore, the research discusses this subject through two axes; the first axis examines the key definitions of the building envelope and analyzes its composition to take advantage of it in formulating the proposed definition. Followed by a study of the impact of the building envelope on the external natural environment by analyzing several international experiences. While the second axis tends to make a modest attempt to formulate a proposal for a new definition, illustrating the emerging capabilities of the envelope towards the external environment, as the definition has important theoretical and practical impacts in applying the concept that highlighted in.

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Technology has accompanied human race since ancient times through tools that were invented to facilitate his life, which has changed his traditional lifestyles. Use of technology has become a fundamental requirement for all societies. In a world, its title is speed and its identity is progress, today humanity begins a new phase of change as it stands on the threshold of the Fourth Industrial Revolution, which was built on the basis of digital revolution but offers many new technologies related to the automation of the industry. One of the important technologies that plays a major role in this revolution is 3D Printing (3DP), which is one of the most flexible manufacturing methods, and has seen significant development in recent years in many fields. Architecture also had a significant share, not only in design where 3DP was associated with architectural models, but also in the construction industry, where recent studies have been conducted to develop 3DP for manufacturing of buildings, where the site is considered a temporary factory in which the building is manufactured. I.e., its use has transformed into the construction industry, which is one of the vital pillars of development in any country for its benefits to society and the economy. However, little is known about the current role of this technology in the construction industry. Besides, this industry, with growing demand for buildings' construction at the local level, faces many challenges that negatively affect the economy, society and the environment, thus reducing its effective and pivotal role in the development process. Within this context, this study seeks to analyze the impact of using 3DP technology on the various corners of the construction industry on-site, namely: the stage of preparing the architectural working drawings, building implementation phase, and the architectural output. Besides extracting what has changed from the general culture of the construction industry through this technology. By reviewing the stages of preparing architectural working drawings for the 3DP process, in addition to studying some international experiences of buildings constructed using 3DP. Then, the study proposes a methodological framework to apply 3D construction printing technology on the local scene. As such, the study concludes by presenting the most important research findings and proposed recommendations.

Humanity has witnessed a series of revolutions that transformed history. Today, the world lives in the era of technological revolution seen in scientific knowledge and the optimal utilization of the information influx. Technological development has swept across all societies into the everyday life, especially that of youths who are fascinated by anything new. Technology has become a fundamental aspect, it is difficult to disregard it due to the facilities and benefits that offers in all areas of life; especially education. As much as it has affected education, it did similarly to architectural education. Although technology has revolutionized education in many countries of the world, in local practice to the present, there are ways of architectural education and teaching used traditional methods that no longer fitting the digital age or modern learner/ teacher thinking in that era, it is an obstacle to the development of education. In addition, architectural education lacks the on-the-job training that helps students understand the environment and practice the profession effectively after graduation. In fact, many different technologies have been integrated in the global educational arena that provide opportunities to design an attractive learning environment. One of these technologies is the use of Augmented Reality (AR) on mobile devices on a large scale. It is one of the latest technologies that provide a new educational method due to the popularity of mobile devices. It is also a new educational model to generate greater self-learning capacity on the student"s part. This study focuses on assessing the integration of mobile augmented reality (MAR) technology in architectural education by presenting some global applications. First, to explore their potential in architectural education. Second, study the impact of their application in some architectural courses on both ends of the educational process: the student and the university educators. Finally, to complete the vision, the difficulties of use are examined. Then study their applicability in the local reality. The study concludes with the most important research findings and proposed recommendations.