| 摘要 |
A flat-formed arch ring unit comprising a linear array of voussoir portions connected along their upper edges is described. The unit is then archable. A method of forming an archway comprising arching one or more the flat formed arch ring units and locating them between two or more foundation blocks or the like is also described. The present invention provides a simple yet effective process and unit for forming an archway. With ease of production, shaping and transportation, making new archways or carrying out repairs of existing bridge archways is significantly faster and cheaper, minimising disruption and delay to traffic.
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