About: http://webisa.webdatacommons.org/195651341

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Their article includes a small diagram with measurements, along with basic instructions and links on where to get materials such as molds and ready-to-mix concrete.
http://www.w3.org/ns/prov#wasQuotedFrom	fixityourself.com