Method and apparatus for production of precision precast concrete flights of stairs

(10) US 2017/0239838 Al

(22) 19.02.2016

(43) 24.08.2017

(57) An apparatus and method for precision forming a precast concrete flight of stairs is disclosed and where precision cut form components provide plural tread supports, plural side­boards, plural tread/riser combinations and a center tread support that upon assembly, the form components, automati­cally square and align treads and risers with upper and lower landings for installation to provide access between vertically spaced apart floors of a structure.

(71) Richard J. Eggleston, II, Asotin, WA

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