Mo-Sai is a method of producing

precast concrete Precast concrete is a construction product produced by casting concrete in a reusable molding (process), mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples i ...

cladding Cladding is an outer layer of material covering another. It may refer to the following: *Cladding (boiler), the layer of insulation and outer wrapping around a boiler shell *Cladding (construction), materials applied to the exterior of buildings ...

panels. It was

patent A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A p ...

ed by

John Joseph Earley John Joseph Earley (1881 in New York City – November 25, 1945) was the son of James Earley, a fourth generation Irish stone carver and ecclesiastical artist. A skilled artisan, architect, and innovator in the use of concrete Earley is best know ...

in 1940. The Mo-Sai institute later refined Earley's method and became the leader in exposed aggregate

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

. The Mo-Sai Institute, an organization of

manufacturers, adhered to the Mo-Sai method of producing the exposed aggregate precast concrete panels. David_Taylor_Model_Basin_-_exterior_view,_c

David_Taylor_Model_Basin_-_exterior_view,_c

A pivotal development in this technique occurred in 1938, when the administration buildings at the

David Taylor Model Basin The David Taylor Model Basin (DTMB) is one of the largest ship model basins—test facilities for the development of ship design—in the world. DTMB is a field activity of the Carderock Division of the Naval Surface Warfare Center. Hist ...

were built with panels used as permanent forms for cast-in-place walls. This was the first use of the Mo-Sai manufacturing technique produced in collaboration with the Dextrone Company of

New Haven, Connecticut New Haven is a city in the U.S. state of Connecticut. It is located on New Haven Harbor on the northern shore of Long Island Sound in New Haven County, Connecticut and is part of the New York City metropolitan area. With a population of 134,02 ...

. Working from this background, the Dextone Company refined and obtained patents and copyrights in 1940 for the methods under which the Mo-Sai Associates, later known as Mo-Sai Institute Inc. The Mo-Sai Institute grew to include a number of licensed manufacturing firms throughout the United States. Buildings featuring Mo-Sai panels include the Columbine Building in

Colorado Springs Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since ...

(1960), Prudential Building in

Toronto, Ontario Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the ancho ...

, Canada (1960), Denver Hilton Hotel (now the Sheraton Denver) in

Denver, Colorado Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the Unit ...

(1960), Los Angeles Temple (1956), Equitable Center in

Portland, Oregon Portland (, ) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous co ...

(1964), the Hartford National Bank and Trust

Hartford, CT Hartford is the List of capitals in the United States, capital city of the U.S. state of Connecticut. It was the seat of Hartford County, Connecticut, Hartford County until Connecticut disbanded County (United States), county government in 19 ...

(1967) and the

PanAm Building The MetLife Building (also 200 Park Avenue and formerly the Pan Am Building) is a skyscraper at Park Avenue and 45th Street, north of Grand Central Terminal, in the Midtown Manhattan neighborhood of New York City. Designed in the Internation ...

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

(1962).

External links

*https://web.archive.org/web/20041221051514/http://bg.concreteproducts.com/ar/concrete_time_tested/index.htm *http://www.precastguide.com/industry_icon/view_article.pl?id=104 Concrete {{Civil-engineering-stub