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By Russ Hazzard, Jonathan Chang, Development Magazine (photo of Vancouver, B.C. Costco by Raef Grohne)
Experiences in Canada and Asia provide case studies for building these complex properties.
Over the past 15 years, multilevel warehouses — particularly those used for retail purposes — have been a growing trend across Asia and, more recently, in the United States. However, some challenges accompany their design and construction that are not encountered in the traditional approach to large-format retail. With operational criteria at the top of the list, these challenges vary heavily based on several factors, including location, footprint, environment, jurisdictional requirements, and cultural and community influences.
The increase in demand for and construction of multilevel warehouses has unearthed numerous unique considerations not present in traditional warehouse environments. These challenges — each intricate in their own right — have required creative solutions and careful programming to successfully bring each project to life.
Parking and Vehicle Flow
One of the most critical design challenges for vertical warehouses is the traffic flow of vehicles and the structure’s parking. While the goal is to keep the sales level on a single floor for ease of operations and the consumer’s shopping experience, parking for multilevel warehouses can reside either above or below grade. Both options have pros and cons: Below-grade parking requires excavation, which can increase costs and complications. However, it provides a solution for lot coverage or height restrictions in situations where those apply. Above-grade or rooftop parking is preferred as it saves both construction time and money.
Customized resolutions to optimize vehicle traffic flow and increase ease of parking have also been employed, varying from warehouse to country to country. For example, in Sinjhuang, Taiwan, indication lights for open parking spaces are used to determine capacity at a glance. In Suzhou, China, car ramps at the entrance steer customers directly up to each floor, allowing them to bypass complete levels. Larger-than-regulation parking spaces — typically very compact in Asia — are also used, granting customers peace of mind. There is no need to worry about maneuvering around tightly packed vehicles in the garage. As an added benefit, large spaces also increase vehicle flow; running in and out of an area is completed in one move vs. two or three.
