Temporary event structures have become a staple in the modern construction environment. Increasingly, large events, exhibitions, festival events and corporate events depend on structures that are designed to operate temporarily yet still provide the same levels of safety, functionality and reliability as permanent structures. As such, the planning and delivery of such projects will need to employ a formalized approach to the delivery of a project similar to those used for permanent construction projects.
The Regulatory Environment and Pre-Construction Planning
Beginning at the point where the first materials arrive on-site, the lifecycle of a temporary structure begins by complying with all local regulations and permitting for the proposed site of the temporary structure. The majority of municipal governments have included temporary structures in their Building Codes; however, these municipal governments have designated specific provisions to govern the wind loads, snow loads, fire-resistance rating, and emergency egress requirements for temporary structures.
Many times, in addition to the provisions mentioned above, a municipality will require documentation from the contractor or designer, including but limited to structural analysis, site plan(s) and method statement(s) that describe the methods and procedures for assembling and disassembling the temporary structure. Likewise, local authorities may establish the maximum length of time a temporary structure may occupy a particular area, and/or inspect the installation and use of the temporary structure while it is located at the site. The regulatory actions mentioned are not just a formality. Rather, they provide an initial level of assurance regarding safety of users and spectators, provide assurance that the temporary structure will not interfere with other uses of adjacent properties or infrastructure, and minimize potential liability to the event organizer, contractor(s), and property owner(s).
During the pre-construction planning phases of a temporary structure project, the primary focus is to assess feasibility. Project planners and engineers assess site conditions, soil bearing capacity, access to the site, and proximity to existing infrastructure. Based upon site conditions, it may be necessary to employ either ground anchors or ballast systems, or utilize modular foundations. For larger projects, coordinating with local authorities and inspection personnel is paramount to prevent delays when construction commences.
Engineering Requirements for Temporary Event Structures
Although temporary event structures are only expected to exist for a relatively short duration, temporary event structures are designed using engineering techniques. Structural calculations for temporary event structures consider both the dynamic loading associated with crowds, equipment, and environmental factors. While selecting materials for a temporary event structure is primarily focused on material selection based upon strength, secondary considerations are also given to transportation efficiency, reusability, and assembly speed.
Most temporary event structure systems today rely on modular construction methods. Utilizing standardized modules allows temporary event structures to accommodate varying floor prints and capacities while maintaining uniform performance characteristics. Digital modeling and load simulation techniques are frequently employed to test various configuration options prior to deploying them on-site.
Delivery Logistics and On-Site Construction Management
The construction phase of a temporary event structure follows a very rigid schedule. Similar to permanent construction projects, logistics issues are typically limited by extremely narrow time frames for delivery, particularly in urban areas or active venues. Installation crews perform tasks in predetermined sequence to minimize exposure to hazards and to maintain the structural integrity of the temporary event structure at each phase of construction.
Coordination among crew members is critical to successful installation of a temporary event structure. Project managers coordinate among engineers, installation crew members, safety officers, and event organizers. At designated stages of completion, inspections are performed to confirm that the temporary event structure meets the specifications outlined in the approved plans. Any deviations from approved plans must be documented and addressed prior to allowing the temporary event structure to be placed into service.
Use and Continuous Monitoring of the Temporary Structure
Once in service, temporary structures continue to be monitored continuously. Weather monitoring, crowd control, and ongoing visual inspections enable the identification of potential hazards early. Plans for safety outline response procedures to extreme weather conditions (i.e., high winds, heavy rain).
Temporary does not imply static. Event layouts can be altered, additional equipment can be added, and/or access routes changed during an event. Each alteration requires reassessment to ensure that the temporary event structure remains in compliance with load limits and escape route requirements. Documentation generated throughout the operational phase provides evidence for accountability and traceability.
Deconstruction, Reuse and Sustainability Factors
Deconstruction of a temporary event structure is planned with the same level of detail and attention as was utilized during the construction phase. The disassembly of components occurs in reverse order of construction, and each component is inspected and prepared for transport or storage. Reusability of components has become a significant consideration in the development of modern temporary structures. Reusing components reduces waste generated by the project and significantly lowers costs associated with the project.
Consideration of sustainability is becoming an increasing influence on design decisions. Design for reuse is increasingly discussed as a key principle in sustainable construction. A research paper on design for reuse in steel construction outlines how modular planning, reversible connections, and documented material properties can significantly extend the lifecycle of structural components and reduce resource consumption across multiple building projects.
Designing modular systems that can be reused across multiple projects significantly enhances the efficiency of resources and the environmental impacts associated with a project. For construction professionals, utilizing temporary structures offers valuable insight into sustainable building practices and flexible design approaches. For example, Viewbox demonstrates how structured planning, engineering expertise, and life-cycle management can provide safe and reliable environments for events of all sizes.