Among the first US railway companies to use the electric tractor and elevator in freight-handling buildings, the Chicago Junction Railway (CJR) primarily served industries in the rapidly growing Central Manufacturing District. CJR freight-handling services were initially provided in single-storey, and subsequently multi-storey, brick and mill buildings, using hand trucks, with only limited storage and warehousing space available. Labour cost savings, and changes in the scale and flexibility of freighthouse operations, possible with the electric tractor and elevator, allowed the CJR to meet the demand for increased freight-handling and warehousing capacity by augmenting older facilities with multi-storey, integrated freighthouse and warehouse buildings, latterly built with steel-reinforced concrete.
The rapidly increasing scale and broadening scope of railway freight operations in Chicago between 1850 and 1925 offer a unique opportunity to study the impact of factors affecting North American freighthouse design. Early freighthouses were small, single-storey brick and mill buildings designed to handle the straightforward exchange of freight shipments, while later freighthouses were large, multi-storey, concrete and steel structures featuring mechanised freight handling systems. A simple analytical framework for studying factors infl uential in freighthouse size, function and design is provided. Market factors include developments in the railway freight marketplace, notably freight traffi c growth and the need to offer storage and warehousing services. Supply factors include those factors that limited or facilitated changes in design resulting from changes in the marketplace, notably local freight delivery costs, increases in land values, advances in construction materials and labour-saving freight handling technologies.Tim Allison is an economist with Argonne National Laboratory, located near Chicago. His interests include the role of economics, building, and process technologies in building design in the transportation, warehousing, and manufacturing industries.
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