portal frame

British

noun

civil engineering building trades a frame, usually of steel, consisting of two uprights and a cross beam at the top: the simplest structural unit in a framed building or a doorway

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

She will have 24 onstage performers, four of her children will also be on stage, and she will transported high up around the arena "in an illuminated portal frame that acts as a time machine".

From Reuters

Prouvé patented his modular building design, based on an axial portal frame, in 1938, and continued to develop his demountable buildings through the ’60s, seeing them function as homes, schoolhouses, offices, and gas stations.

From Architectural Digest

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023