# Nexus between Building Information Modeling and Internet of Things in the Construction Industries
## 1 Introduction  
The entire construction process, starting with the location of the building and ending with its management and upkeep is encompassed in the concept of Construction 4.0 [1]. Governments in many countries are encouraging the building industry to embrace Industry 4.0 [2]. To enforce the electronic form of the construction process from project preparation, budgeting, building approvals, construction management, and building management and the application of these public construction contract principles, efforts are being made to consolidate dispersed investment and construction management powers [3]. When the industrial revolution occurred, people's feelings, thoughts, and perceptions of the world changed dramatically [4, 5]. Everything from machines to humans to how they feel, think and see the environment could be altered as a result [6]. The construction industry has benefited from industry 4.0, which has brought digital technology such as sensor systems, intelligent machinery, and smart materials to the field of construction [7]. Using building information modeling (BIM), a project's digital information is centralized in one place, where it is utilized to maintain track of all the digital information about a project [8, 9]. BIM is the appropriate starting point when it comes to the construction industry. To develop strong and innovative apps, it provides an additional layer of data that may interact and collaborate in real-time throughout the project life cycle [10]. Usingmodern BIM technologies, the construction industry can be made more efficient and cost-effective [11]. With the application of open BIM, existing construction management systems can be integrated with BIM to enhance its power in the construction ecosystem [12]. Even though BIM has gained widespread acceptance in the construction industry and is worth the investment for many firms, few have taken full advantage of its benefits [13]. The Internet of Things (IoT) is a new internet breakthrough in which billions of smart things are linked together [14]. Data can be exchanged between several computers and digital equipment without the need for human intervention using unique identifiers. It is possible to provide network users with added value services like ensuring the privacy of shared data by integrating IoT sensors into internet-connected devices [15]. Using IoT in the construction industry has various benefits [16]. There are a variety of benefits associated with this approach, such as enhanced execution monitoring and control, higher quality, lower costs, and more time saved [17]. Since real-time data analytics are now widely available for usage in the context of rapid decision-making, it has also been expanded. Structure monitoring improves crisis management and emergency response capacities as well. The IoT can help with environmental issues like trash management, pond pollution, and flood concentration analysis. The introduction of new technology brings with it a variety of challenges that need to be overcome [18]. Method of introduction, public acceptance, and lack of information and expertise are all potential roadblocks. construction projects are relatively difficult with a high risk of failure that comes along with them severely restricts the potential use of new technologies. Despite these difficulties, the IoT has been implemented in the construction industry, with one of the most prominent applications being the monitoring and control of project execution in a variety of projects, including bridges, railways, tunnels, and onshore and offshore facilities, among others. A few studies have concentrated on the integration of BIM and IoT to improve innovation in various areas of endeavours. [PERSON] et al. [19] reported the integration of BIM and IoT devices in the Architecture, Engineering, and Construction (AEC) sector from the standpoint of domain application and integration approaches, as well as by shedding light on the present limits and significant topics for future research and development. [PERSON] et al.