Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 54
MASONRY AND REINFORCED CONCRETE 29 the cake is hard enough to bear a gentle pressure of the finger nail,the cement has begun to set, and when it is not indented by a con-siderable pressure of the thumb nail, it is said to have set, 51. Standard Sand. The Committee recognizes the grave objec-tions… … ng. 3. Form of Briquette. gating the various natural sands which appeared to be available andsuitable for use. For the present, the Committee recommends thenatural sand from Ottawa, 111., screened to pass a sieve having 20meshes per linear inch and retained on a sieve having 30 meshes perlinear…
Architecture · Building
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![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-119-40.webp)
