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One of the first [[skyscraper]]s made with reinforced concrete was the 16-story [[Ingalls Building]] in Cincinnati, constructed in 1904.<ref name=CIVL1101/>
The first reinforced concrete building in Southern California was the [[Homer Laughlin Building|Laughlin Annex]] in downtown [[Los Angeles]], constructed in 1905.<ref>{{Cite book |url=https://books.google.com/books?id=YmUUAAAAYAAJ |title=Los Angeles from the Mountains to the Sea |volume=2 |last=McGroarty |first=John Steven |publisher=American Historical Society |year=1921 |location=Los Angeles, CA |page=176 |access-date=2017-11-29 |archive-date=2016-08-09 |archive-url=https://web.archive.org/web/20160809190406/https://books.google.com/books?id=YmUUAAAAYAAJ |url-status=live }}</ref><ref>{{Cite book |title=Annual Report of the City Auditor, City of Los Angeles, California for the Year Ending June 30 |publisher=Los Angeles City Auditor |year=1905 |location=Los Angeles, CA |pages=71–73 }}</ref> In 1906, 16 building permits were reportedly issued for reinforced concrete buildings in the City of Los Angeles, including the [[Hazard's Pavilion#Clune's Auditorium|Temple Auditorium]] and 8-story Hayward Hotel.<ref>{{Cite journal |last=Williams |first=D. |date=February 1907 |title=What Builders are Doing |url=https://books.google.com/books?id=oidPAAAAYAAJ&pg=PA66 |journal=Carpentry and Building |page=66 |access-date=2017-11-29 |archive-date=2020-09-01 |archive-url=https://web.archive.org/web/20200901135940/https://books.google.com/books?id=oidPAAAAYAAJ&pg=PA66 |url-status=live }}</ref><ref>{{Cite journal |author=W.P.H. |date=April 19, 1906 |title=Reinforced Concrete Buildings at Los Angeles, Cal. |url=https://books.google.com/books?id=jg1HAQAAMAAJ&pg=449 |journal=Engineering News-Record |volume=55 |page=449 |department=Letters to the Editor |access-date=November 29, 2017 |archive-date=September 19, 2020 |archive-url=https://web.archive.org/web/20200919094412/https://books.google.com/books?id=jg1HAQAAMAAJ&pg=449 |url-status=live }}</ref>
In 1906, a partial collapse of the Bixby Hotel in Long Beach killed 10 workers during construction when shoring was removed prematurely. That event spurred a scrutiny of concrete erection practices and building inspections. The structure was constructed of reinforced concrete frames with hollow clay tile ribbed flooring and hollow clay tile infill walls. That practice was strongly questioned by experts and recommendations for “pure” concrete construction were made, using reinforced concrete for the floors and walls as well as the frames.<ref>{{Cite magazine |author1=Austin, J. C. |author2=Neher, O. H. |author3=Hicks, L. A. |author4=Whittlesey, C. F. |author5=Leonard, J. B. |date=November 1906 |title=Partial Collapse of the Bixby Hotel at Long Beach |url=https://books.google.com/books?id=17dCAQAAMAAJ&pg=PA44 |magazine=Architect and Engineer of California |volume=VII |issue=1 |pages=44–48 |access-date=2018-05-29 |archive-date=2020-09-20 |archive-url=https://web.archive.org/web/20200920184843/https://books.google.com/books?id=17dCAQAAMAAJ&pg=PA44 |url-status=live }}</ref>
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