The Long Arch

by Kent Pease, P.E., (M.ASCE), Sr. Engr.; Haley & Aldrich, Inc., Denver, CO,

Serial Information: Civil Engineering—ASCE, 2001, Vol. 71, Issue 5, Pg. 52-55

Document Type: Feature article


The proposed long-arch method of constructing large underground chambers is a novel variation of well-established cellular construction methods. But each cell is arch-shaped and is independent from other cells to provide ground support for a partially complete opening and allow additional incremental excavation and support. It is fundamentally different from other cellular methods in that each cell is an independent stable arch. The method is well suited for areas with shallow soil cover and in urban settings.

Subject Headings: Construction methods | Underground construction | Arches | Urban areas | Excavation

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